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Merge pull request #240 from ARMmbed/psa-header_split

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Split type definitions out of crypto.h and split crypto_driver.h
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Jaeden Amero 2019-01-03 10:22:10 +00:00 committed by GitHub
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/**
* \file psa/crypto_accel_driver.h
* \brief PSA cryptography accelerator driver module
*
* This header declares types and function signatures for cryptography
* drivers that access key material directly. This is meant for
* on-chip cryptography accelerators.
*
* This file is part of the PSA Crypto Driver Model, containing functions for
* driver developers to implement to enable hardware to be called in a
* standardized way by a PSA Cryptographic API implementation. The functions
* comprising the driver model, which driver authors implement, are not
* intended to be called by application developers.
*/
/*
* Copyright (C) 2018, ARM Limited, All Rights Reserved
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef PSA_CRYPTO_ACCEL_DRIVER_H
#define PSA_CRYPTO_ACCEL_DRIVER_H
#include "crypto_driver_common.h"
#ifdef __cplusplus
extern "C" {
#endif
/** \defgroup driver_digest Message Digests
*
* Generation and authentication of Message Digests (aka hashes) must be done
* in parts using the following sequence:
* - `psa_drv_hash_setup_t`
* - `psa_drv_hash_update_t`
* - ...
* - `psa_drv_hash_finish_t`
*
* If a previously started Message Digest operation needs to be terminated
* before the `psa_drv_hash_finish_t` operation is complete, it should be aborted
* by the `psa_drv_hash_abort_t`. Failure to do so may result in allocated
* resources not being freed or in other undefined behavior.
*/
/**@{*/
/** \brief The hardware-specific hash context structure
*
* The contents of this structure are implementation dependent and are
* therefore not described here
*/
typedef struct psa_drv_hash_context_s psa_drv_hash_context_t;
/** \brief The function prototype for the start operation of a hash (message
* digest) operation
*
* Functions that implement the prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_hash_<ALGO>_setup
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the underlying hash function
*
* \param[in,out] p_context A structure that will contain the
* hardware-specific hash context
*
* \retval PSA_SUCCESS Success.
*/
typedef psa_status_t (*psa_drv_hash_setup_t)(psa_drv_hash_context_t *p_context);
/** \brief The function prototype for the update operation of a hash (message
* digest) operation
*
* Functions that implement the prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_hash_<ALGO>_update
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the underlying algorithm
*
* \param[in,out] p_context A hardware-specific structure for the
* previously-established hash operation to be
* continued
* \param[in] p_input A buffer containing the message to be appended
* to the hash operation
* \param[in] input_length The size in bytes of the input message buffer
*/
typedef psa_status_t (*psa_drv_hash_update_t)(psa_drv_hash_context_t *p_context,
const uint8_t *p_input,
size_t input_length);
/** \brief The prototype for the finish operation of a hash (message digest)
* operation
*
* Functions that implement the prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_hash_<ALGO>_finish
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the underlying algorithm
*
* \param[in,out] p_context A hardware-specific structure for the
* previously started hash operation to be
* fiinished
* \param[out] p_output A buffer where the generated digest will be
* placed
* \param[in] output_size The size in bytes of the buffer that has been
* allocated for the `p_output` buffer
* \param[out] p_output_length The number of bytes placed in `p_output` after
* success
*
* \retval PSA_SUCCESS
* Success.
*/
typedef psa_status_t (*psa_drv_hash_finish_t)(psa_drv_hash_context_t *p_context,
uint8_t *p_output,
size_t output_size,
size_t *p_output_length);
/** \brief The function prototype for the abort operation of a hash (message
* digest) operation
*
* Functions that implement the prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_hash_<ALGO>_abort
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the underlying algorithm
*
* \param[in,out] p_context A hardware-specific structure for the previously
* started hash operation to be aborted
*/
typedef void (*psa_drv_hash_abort_t)(psa_drv_hash_context_t *p_context);
/**@}*/
/** \defgroup transparent_mac Transparent Message Authentication Code
* Generation and authentication of Message Authentication Codes (MACs) using
* transparent keys can be done either as a single function call (via the
* `psa_drv_mac_transparent_generate_t` or `psa_drv_mac_transparent_verify_t`
* functions), or in parts using the following sequence:
* - `psa_drv_mac_transparent_setup_t`
* - `psa_drv_mac_transparent_update_t`
* - `psa_drv_mac_transparent_update_t`
* - ...
* - `psa_drv_mac_transparent_finish_t` or `psa_drv_mac_transparent_finish_verify_t`
*
* If a previously started Transparent MAC operation needs to be terminated, it
* should be done so by the `psa_drv_mac_transparent_abort_t`. Failure to do so may
* result in allocated resources not being freed or in other undefined
* behavior.
*
*/
/**@{*/
/** \brief The hardware-specific transparent-key MAC context structure
*
* The contents of this structure are implementation dependent and are
* therefore not described here.
*/
typedef struct psa_drv_mac_transparent_context_s psa_drv_mac_transparent_context_t;
/** \brief The function prototype for the setup operation of a
* transparent-key MAC operation
*
* Functions that implement the prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_mac_transparent_<ALGO>_<MAC_VARIANT>_setup
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the underlying primitive, and `MAC_VARIANT`
* is the specific variant of a MAC operation (such as HMAC or CMAC)
*
* \param[in,out] p_context A structure that will contain the
* hardware-specific MAC context
* \param[in] p_key A buffer containing the cleartext key material
* to be used in the operation
* \param[in] key_length The size in bytes of the key material
*
* \retval PSA_SUCCESS
* Success.
*/
typedef psa_status_t (*psa_drv_mac_transparent_setup_t)(psa_drv_mac_transparent_context_t *p_context,
const uint8_t *p_key,
size_t key_length);
/** \brief The function prototype for the update operation of a
* transparent-key MAC operation
*
* Functions that implement the prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_mac_transparent_<ALGO>_<MAC_VARIANT>_update
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the underlying algorithm, and `MAC_VARIANT`
* is the specific variant of a MAC operation (such as HMAC or CMAC)
*
* \param[in,out] p_context A hardware-specific structure for the
* previously-established MAC operation to be
* continued
* \param[in] p_input A buffer containing the message to be appended
* to the MAC operation
* \param[in] input_length The size in bytes of the input message buffer
*/
typedef psa_status_t (*psa_drv_mac_transparent_update_t)(psa_drv_mac_transparent_context_t *p_context,
const uint8_t *p_input,
size_t input_length);
/** \brief The function prototype for the finish operation of a
* transparent-key MAC operation
*
* Functions that implement the prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_mac_transparent_<ALGO>_<MAC_VARIANT>_finish
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the underlying algorithm, and `MAC_VARIANT` is
* the specific variant of a MAC operation (such as HMAC or CMAC)
*
* \param[in,out] p_context A hardware-specific structure for the
* previously started MAC operation to be
* finished
* \param[out] p_mac A buffer where the generated MAC will be placed
* \param[in] mac_length The size in bytes of the buffer that has been
* allocated for the `p_mac` buffer
*
* \retval PSA_SUCCESS
* Success.
*/
typedef psa_status_t (*psa_drv_mac_transparent_finish_t)(psa_drv_mac_transparent_context_t *p_context,
uint8_t *p_mac,
size_t mac_length);
/** \brief The function prototype for the finish and verify operation of a
* transparent-key MAC operation
*
* Functions that implement the prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_mac_transparent_<ALGO>_<MAC_VARIANT>_finish_verify
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the underlying algorithm, and `MAC_VARIANT` is
* the specific variant of a MAC operation (such as HMAC or CMAC)
*
* \param[in,out] p_context A hardware-specific structure for the
* previously started MAC operation to be
* verified and finished
* \param[in] p_mac A buffer containing the MAC that will be used
* for verification
* \param[in] mac_length The size in bytes of the data in the `p_mac`
* buffer
*
* \retval PSA_SUCCESS
* The operation completed successfully and the comparison matched
*/
typedef psa_status_t (*psa_drv_mac_transparent_finish_verify_t)(psa_drv_mac_transparent_context_t *p_context,
const uint8_t *p_mac,
size_t mac_length);
/** \brief The function prototype for the abort operation for a previously
* started transparent-key MAC operation
*
* Functions that implement the prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_mac_transparent_<ALGO>_<MAC_VARIANT>_abort
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the underlying algorithm, and `MAC_VARIANT` is
* the specific variant of a MAC operation (such as HMAC or CMAC)
*
* \param[in,out] p_context A hardware-specific structure for the
* previously started MAC operation to be
* aborted
*
*/
typedef psa_status_t (*psa_drv_mac_transparent_abort_t)(psa_drv_mac_transparent_context_t *p_context);
/** \brief The function prototype for a one-shot operation of a transparent-key
* MAC operation
*
* Functions that implement the prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_mac_transparent_<ALGO>_<MAC_VARIANT>
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the underlying algorithm, and `MAC_VARIANT` is
* the specific variant of a MAC operation (such as HMAC or CMAC)
*
* \param[in] p_input A buffer containing the data to be MACed
* \param[in] input_length The length in bytes of the `p_input` data
* \param[in] p_key A buffer containing the key material to be used
* for the MAC operation
* \param[in] key_length The length in bytes of the `p_key` data
* \param[in] alg The algorithm to be performed
* \param[out] p_mac The buffer where the resulting MAC will be placed
* upon success
* \param[in] mac_length The length in bytes of the `p_mac` buffer
*/
typedef psa_status_t (*psa_drv_mac_transparent_t)(const uint8_t *p_input,
size_t input_length,
const uint8_t *p_key,
size_t key_length,
psa_algorithm_t alg,
uint8_t *p_mac,
size_t mac_length);
/** \brief The function prototype for a one-shot operation of a transparent-key
* MAC Verify operation
*
* Functions that implement the prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_mac_transparent_<ALGO>_<MAC_VARIANT>_verify
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the underlying algorithm, and `MAC_VARIANT` is
* the specific variant of a MAC operation (such as HMAC or CMAC)
*
* \param[in] p_input A buffer containing the data to be MACed
* \param[in] input_length The length in bytes of the `p_input` data
* \param[in] p_key A buffer containing the key material to be used
* for the MAC operation
* \param[in] key_length The length in bytes of the `p_key` data
* \param[in] alg The algorithm to be performed
* \param[in] p_mac The MAC data to be compared
* \param[in] mac_length The length in bytes of the `p_mac` buffer
*
* \retval PSA_SUCCESS
* The operation completed successfully and the comparison matched
*/
typedef psa_status_t (*psa_drv_mac_transparent_verify_t)(const uint8_t *p_input,
size_t input_length,
const uint8_t *p_key,
size_t key_length,
psa_algorithm_t alg,
const uint8_t *p_mac,
size_t mac_length);
/**@}*/
/** \defgroup transparent_cipher Transparent Block Cipher
* Encryption and Decryption using transparent keys in block modes other than
* ECB must be done in multiple parts, using the following flow:
* - `psa_drv_cipher_transparent_setup_t`
* - `psa_drv_cipher_transparent_set_iv_t` (optional depending upon block mode)
* - `psa_drv_cipher_transparent_update_t`
* - ...
* - `psa_drv_cipher_transparent_finish_t`
* If a previously started Transparent Cipher operation needs to be terminated,
* it should be done so by the `psa_drv_cipher_transparent_abort_t`. Failure to do
* so may result in allocated resources not being freed or in other undefined
* behavior.
*/
/**@{*/
/** \brief The hardware-specific transparent-key Cipher context structure
*
* The contents of this structure are implementation dependent and are
* therefore not described here.
*/
typedef struct psa_drv_cipher_transparent_context_s psa_drv_cipher_transparent_context_t;
/** \brief The function prototype for the setup operation of transparent-key
* block cipher operations.
* Functions that implement the prototype should be named in the following
* conventions:
* ~~~~~~~~~~~~~{.c}
* psa_drv_cipher_transparent_setup_<CIPHER_NAME>_<MODE>
* ~~~~~~~~~~~~~
* Where
* - `CIPHER_NAME` is the name of the underlying block cipher (i.e. AES or DES)
* - `MODE` is the block mode of the cipher operation (i.e. CBC or CTR)
* or for stream ciphers:
* ~~~~~~~~~~~~~{.c}
* psa_drv_cipher_transparent_setup_<CIPHER_NAME>
* ~~~~~~~~~~~~~
* Where `CIPHER_NAME` is the name of a stream cipher (i.e. RC4)
*
* \param[in,out] p_context A structure that will contain the
* hardware-specific cipher context
* \param[in] direction Indicates if the operation is an encrypt or a
* decrypt
* \param[in] p_key_data A buffer containing the cleartext key material
* to be used in the operation
* \param[in] key_data_size The size in bytes of the key material
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_cipher_transparent_setup_t)(psa_drv_cipher_transparent_context_t *p_context,
psa_encrypt_or_decrypt_t direction,
const uint8_t *p_key_data,
size_t key_data_size);
/** \brief The function prototype for the set initialization vector operation
* of transparent-key block cipher operations
* Functions that implement the prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_cipher_transparent_set_iv_<CIPHER_NAME>_<MODE>
* ~~~~~~~~~~~~~
* Where
* - `CIPHER_NAME` is the name of the underlying block cipher (i.e. AES or DES)
* - `MODE` is the block mode of the cipher operation (i.e. CBC or CTR)
*
* \param[in,out] p_context A structure that contains the previously setup
* hardware-specific cipher context
* \param[in] p_iv A buffer containing the initialization vecotr
* \param[in] iv_length The size in bytes of the contents of `p_iv`
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_cipher_transparent_set_iv_t)(psa_drv_cipher_transparent_context_t *p_context,
const uint8_t *p_iv,
size_t iv_length);
/** \brief The function prototype for the update operation of transparent-key
* block cipher operations.
*
* Functions that implement the prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_cipher_transparent_update_<CIPHER_NAME>_<MODE>
* ~~~~~~~~~~~~~
* Where
* - `CIPHER_NAME` is the name of the underlying block cipher (i.e. AES or DES)
* - `MODE` is the block mode of the cipher operation (i.e. CBC or CTR)
*
* \param[in,out] p_context A hardware-specific structure for the
* previously started cipher operation
* \param[in] p_input A buffer containing the data to be
* encrypted or decrypted
* \param[in] input_size The size in bytes of the `p_input` buffer
* \param[out] p_output A caller-allocated buffer where the
* generated output will be placed
* \param[in] output_size The size in bytes of the `p_output` buffer
* \param[out] p_output_length After completion, will contain the number
* of bytes placed in the `p_output` buffer
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_cipher_transparent_update_t)(psa_drv_cipher_transparent_context_t *p_context,
const uint8_t *p_input,
size_t input_size,
uint8_t *p_output,
size_t output_size,
size_t *p_output_length);
/** \brief The function prototype for the finish operation of transparent-key
* block cipher operations.
*
* Functions that implement the prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_cipher_transparent_finish_<CIPHER_NAME>_<MODE>
* ~~~~~~~~~~~~~
* Where
* - `CIPHER_NAME` is the name of the underlying block cipher (i.e. AES or DES)
* - `MODE` is the block mode of the cipher operation (i.e. CBC or CTR)
*
* \param[in,out] p_context A hardware-specific structure for the
* previously started cipher operation
* \param[out] p_output A caller-allocated buffer where the generated
* output will be placed
* \param[in] output_size The size in bytes of the `p_output` buffer
* \param[out] p_output_length After completion, will contain the number of
* bytes placed in the `p_output` buffer
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_cipher_transparent_finish_t)(psa_drv_cipher_transparent_context_t *p_context,
uint8_t *p_output,
size_t output_size,
size_t *p_output_length);
/** \brief The function prototype for the abort operation of transparent-key
* block cipher operations.
*
* Functions that implement the following prototype should be named in the
* following convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_cipher_transparent_abort_<CIPHER_NAME>_<MODE>
* ~~~~~~~~~~~~~
* Where
* - `CIPHER_NAME` is the name of the underlying block cipher (i.e. AES or DES)
* - `MODE` is the block mode of the cipher operation (i.e. CBC or CTR)
*
* \param[in,out] p_context A hardware-specific structure for the
* previously started cipher operation
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_cipher_transparent_abort_t)(psa_drv_cipher_transparent_context_t *p_context);
/**@}*/
/** \defgroup aead_transparent AEAD Transparent
*
* Authenticated Encryption with Additional Data (AEAD) operations with
* transparent keys must be done in one function call. While this creates a
* burden for implementers as there must be sufficient space in memory for the
* entire message, it prevents decrypted data from being made available before
* the authentication operation is complete and the data is known to be
* authentic.
*/
/**@{*/
/** Process an authenticated encryption operation using an opaque key.
*
* Functions that implement the prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_aead_<ALGO>_encrypt
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the AEAD algorithm
*
* \param[in] p_key A pointer to the key material
* \param[in] key_length The size in bytes of the key material
* \param[in] alg The AEAD algorithm to compute
* (\c PSA_ALG_XXX value such that
* #PSA_ALG_IS_AEAD(`alg`) is true)
* \param[in] nonce Nonce or IV to use
* \param[in] nonce_length Size of the `nonce` buffer in bytes
* \param[in] additional_data Additional data that will be MACed
* but not encrypted.
* \param[in] additional_data_length Size of `additional_data` in bytes
* \param[in] plaintext Data that will be MACed and
* encrypted.
* \param[in] plaintext_length Size of `plaintext` in bytes
* \param[out] ciphertext Output buffer for the authenticated and
* encrypted data. The additional data is
* not part of this output. For algorithms
* where the encrypted data and the
* authentication tag are defined as
* separate outputs, the authentication
* tag is appended to the encrypted data.
* \param[in] ciphertext_size Size of the `ciphertext` buffer in
* bytes
* This must be at least
* #PSA_AEAD_ENCRYPT_OUTPUT_SIZE(`alg`,
* `plaintext_length`).
* \param[out] ciphertext_length On success, the size of the output in
* the `ciphertext` buffer
*
* \retval #PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_aead_transparent_encrypt_t)(const uint8_t *p_key,
size_t key_length,
psa_algorithm_t alg,
const uint8_t *nonce,
size_t nonce_length,
const uint8_t *additional_data,
size_t additional_data_length,
const uint8_t *plaintext,
size_t plaintext_length,
uint8_t *ciphertext,
size_t ciphertext_size,
size_t *ciphertext_length);
/** Process an authenticated decryption operation using an opaque key.
*
* Functions that implement the prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_aead_<ALGO>_decrypt
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the AEAD algorithm
* \param[in] p_key A pointer to the key material
* \param[in] key_length The size in bytes of the key material
* \param[in] alg The AEAD algorithm to compute
* (\c PSA_ALG_XXX value such that
* #PSA_ALG_IS_AEAD(`alg`) is true)
* \param[in] nonce Nonce or IV to use
* \param[in] nonce_length Size of the `nonce` buffer in bytes
* \param[in] additional_data Additional data that has been MACed
* but not encrypted
* \param[in] additional_data_length Size of `additional_data` in bytes
* \param[in] ciphertext Data that has been MACed and
* encrypted
* For algorithms where the encrypted data
* and the authentication tag are defined
* as separate inputs, the buffer must
* contain the encrypted data followed by
* the authentication tag.
* \param[in] ciphertext_length Size of `ciphertext` in bytes
* \param[out] plaintext Output buffer for the decrypted data
* \param[in] plaintext_size Size of the `plaintext` buffer in
* bytes
* This must be at least
* #PSA_AEAD_DECRYPT_OUTPUT_SIZE(`alg`,
* `ciphertext_length`).
* \param[out] plaintext_length On success, the size of the output
* in the \b plaintext buffer
*
* \retval #PSA_SUCCESS
* Success.
*/
typedef psa_status_t (*psa_drv_aead_transparent_decrypt_t)(const uint8_t *p_key,
size_t key_length,
psa_algorithm_t alg,
const uint8_t *nonce,
size_t nonce_length,
const uint8_t *additional_data,
size_t additional_data_length,
const uint8_t *ciphertext,
size_t ciphertext_length,
uint8_t *plaintext,
size_t plaintext_size,
size_t *plaintext_length);
/**@}*/
/** \defgroup transparent_asymmetric Transparent Asymmetric Cryptography
*
* Since the amount of data that can (or should) be encrypted or signed using
* asymmetric keys is limited by the key size, asymmetric key operations using
* transparent keys must be done in single function calls.
*/
/**@{*/
/**
* \brief A function that signs a hash or short message with a transparent
* asymmetric private key
*
* Functions that implement the prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_asymmetric_<ALGO>_sign
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the signing algorithm
*
* \param[in] p_key A buffer containing the private key
* material
* \param[in] key_size The size in bytes of the `p_key` data
* \param[in] alg A signature algorithm that is compatible
* with the type of `p_key`
* \param[in] p_hash The hash or message to sign
* \param[in] hash_length Size of the `p_hash` buffer in bytes
* \param[out] p_signature Buffer where the signature is to be written
* \param[in] signature_size Size of the `p_signature` buffer in bytes
* \param[out] p_signature_length On success, the number of bytes
* that make up the returned signature value
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_asymmetric_transparent_sign_t)(const uint8_t *p_key,
size_t key_size,
psa_algorithm_t alg,
const uint8_t *p_hash,
size_t hash_length,
uint8_t *p_signature,
size_t signature_size,
size_t *p_signature_length);
/**
* \brief A function that verifies the signature a hash or short message using
* a transparent asymmetric public key
*
* Functions that implement the prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_asymmetric_<ALGO>_verify
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the signing algorithm
*
* \param[in] p_key A buffer containing the public key material
* \param[in] key_size The size in bytes of the `p_key` data
* \param[in] alg A signature algorithm that is compatible with
* the type of `key`
* \param[in] p_hash The hash or message whose signature is to be
* verified
* \param[in] hash_length Size of the `p_hash` buffer in bytes
* \param[in] p_signature Buffer containing the signature to verify
* \param[in] signature_length Size of the `p_signature` buffer in bytes
*
* \retval PSA_SUCCESS
* The signature is valid.
*/
typedef psa_status_t (*psa_drv_asymmetric_transparent_verify_t)(const uint8_t *p_key,
size_t key_size,
psa_algorithm_t alg,
const uint8_t *p_hash,
size_t hash_length,
const uint8_t *p_signature,
size_t signature_length);
/**
* \brief A function that encrypts a short message with a transparent
* asymmetric public key
*
* Functions that implement the prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_asymmetric_<ALGO>_encrypt
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the encryption algorithm
*
* \param[in] p_key A buffer containing the public key material
* \param[in] key_size The size in bytes of the `p_key` data
* \param[in] alg An asymmetric encryption algorithm that is
* compatible with the type of `key`
* \param[in] p_input The message to encrypt
* \param[in] input_length Size of the `p_input` buffer in bytes
* \param[in] p_salt A salt or label, if supported by the
* encryption algorithm
* If the algorithm does not support a
* salt, pass `NULL`
* If the algorithm supports an optional
* salt and you do not want to pass a salt,
* pass `NULL`.
* For #PSA_ALG_RSA_PKCS1V15_CRYPT, no salt is
* supported.
* \param[in] salt_length Size of the `p_salt` buffer in bytes
* If `p_salt` is `NULL`, pass 0.
* \param[out] p_output Buffer where the encrypted message is to
* be written
* \param[in] output_size Size of the `p_output` buffer in bytes
* \param[out] p_output_length On success, the number of bytes
* that make up the returned output
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_asymmetric_transparent_encrypt_t)(const uint8_t *p_key,
size_t key_size,
psa_algorithm_t alg,
const uint8_t *p_input,
size_t input_length,
const uint8_t *p_salt,
size_t salt_length,
uint8_t *p_output,
size_t output_size,
size_t *p_output_length);
/**
* \brief Decrypt a short message with a transparent asymmetric private key
*
* Functions that implement the prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_asymmetric_<ALGO>_decrypt
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the encryption algorithm
*
* \param[in] p_key A buffer containing the private key material
* \param[in] key_size The size in bytes of the `p_key` data
* \param[in] alg An asymmetric encryption algorithm that is
* compatible with the type of `key`
* \param[in] p_input The message to decrypt
* \param[in] input_length Size of the `p_input` buffer in bytes
* \param[in] p_salt A salt or label, if supported by the
* encryption algorithm
* If the algorithm does not support a
* salt, pass `NULL`.
* If the algorithm supports an optional
* salt and you do not want to pass a salt,
* pass `NULL`.
* For #PSA_ALG_RSA_PKCS1V15_CRYPT, no salt is
* supported
* \param[in] salt_length Size of the `p_salt` buffer in bytes
* If `p_salt` is `NULL`, pass 0
* \param[out] p_output Buffer where the decrypted message is to
* be written
* \param[in] output_size Size of the `p_output` buffer in bytes
* \param[out] p_output_length On success, the number of bytes
* that make up the returned output
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_asymmetric_transparent_decrypt_t)(const uint8_t *p_key,
size_t key_size,
psa_algorithm_t alg,
const uint8_t *p_input,
size_t input_length,
const uint8_t *p_salt,
size_t salt_length,
uint8_t *p_output,
size_t output_size,
size_t *p_output_length);
/**@}*/
#ifdef __cplusplus
}
#endif
#endif /* PSA_CRYPTO_ACCEL_DRIVER_H */

54
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@ -0,0 +1,54 @@
/**
* \file psa/crypto_driver_common.h
* \brief Definitions for all PSA crypto drivers
*
* This file contains common definitions shared by all PSA crypto drivers.
* Do not include it directly: instead, include the header file(s) for
* the type(s) of driver that you are implementing. For example, if
* you are writing a driver for a chip that provides both a hardware
* random generator and an accelerator for some cryptographic algorithms,
* include `psa/crypto_entropy_driver.h` and `psa/crypto_accel_driver.h`.
*
* This file is part of the PSA Crypto Driver Model, containing functions for
* driver developers to implement to enable hardware to be called in a
* standardized way by a PSA Cryptographic API implementation. The functions
* comprising the driver model, which driver authors implement, are not
* intended to be called by application developers.
*/
/*
* Copyright (C) 2018, ARM Limited, All Rights Reserved
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef PSA_CRYPTO_DRIVER_COMMON_H
#define PSA_CRYPTO_DRIVER_COMMON_H
#include <stddef.h>
#include <stdint.h>
/* Include type definitions (psa_status_t, psa_algorithm_t,
* psa_key_type_t, etc.) and macros to build and analyze values
* of these types. */
#include "crypto_types.h"
#include "crypto_values.h"
/** For encrypt-decrypt functions, whether the operation is an encryption
* or a decryption. */
typedef enum {
PSA_CRYPTO_DRIVER_DECRYPT,
PSA_CRYPTO_DRIVER_ENCRYPT
} psa_encrypt_or_decrypt_t;
#endif /* PSA_CRYPTO_DRIVER_COMMON_H */

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@ -0,0 +1,111 @@
/**
* \file psa/crypto_entropy_driver.h
* \brief PSA entropy source driver module
*
* This header declares types and function signatures for entropy sources.
*
* This file is part of the PSA Crypto Driver Model, containing functions for
* driver developers to implement to enable hardware to be called in a
* standardized way by a PSA Cryptographic API implementation. The functions
* comprising the driver model, which driver authors implement, are not
* intended to be called by application developers.
*/
/*
* Copyright (C) 2018, ARM Limited, All Rights Reserved
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef PSA_CRYPTO_ENTROPY_DRIVER_H
#define PSA_CRYPTO_ENTROPY_DRIVER_H
#include "crypto_driver_common.h"
#ifdef __cplusplus
extern "C" {
#endif
/** \defgroup driver_rng Entropy Generation
*/
/**@{*/
/** \brief A hardware-specific structure for a entropy providing hardware
*/
typedef struct psa_drv_entropy_context_s psa_drv_entropy_context_t;
/** \brief Initialize an entropy driver
*
*
* \param[in,out] p_context A hardware-specific structure
* containing any context information for
* the implementation
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_entropy_init_t)(psa_drv_entropy_context_t *p_context);
/** \brief Get a specified number of bits from the entropy source
*
* It retrives `buffer_size` bytes of data from the entropy source. The entropy
* source will always fill the provided buffer to its full size, however, most
* entropy sources have biases, and the actual amount of entropy contained in
* the buffer will be less than the number of bytes.
* The driver will return the actual number of bytes of entropy placed in the
* buffer in `p_received_entropy_bytes`.
* A PSA Crypto API implementation will likely feed the output of this function
* into a Digital Random Bit Generator (DRBG), and typically has a minimum
* amount of entropy that it needs.
* To accomplish this, the PSA Crypto implementation should be designed to call
* this function multiple times until it has received the required amount of
* entropy from the entropy source.
*
* \param[in,out] p_context A hardware-specific structure
* containing any context information
* for the implementation
* \param[out] p_buffer A caller-allocated buffer for the
* retrieved entropy to be placed in
* \param[in] buffer_size The allocated size of `p_buffer`
* \param[out] p_received_entropy_bits The amount of entropy (in bits)
* actually provided in `p_buffer`
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_entropy_get_bits_t)(psa_drv_entropy_context_t *p_context,
uint8_t *p_buffer,
uint32_t buffer_size,
uint32_t *p_received_entropy_bits);
/**
* \brief A struct containing all of the function pointers needed to interface
* to an entropy source
*
* PSA Crypto API implementations should populate instances of the table as
* appropriate upon startup.
*
* If one of the functions is not implemented, it should be set to NULL.
*/
typedef struct {
/** Function that performs initialization for the entropy source */
psa_drv_entropy_init_t *p_init;
/** Function that performs the get_bits operation for the entropy source
*/
psa_drv_entropy_get_bits_t *p_get_bits;
} psa_drv_entropy_t;
/**@}*/
#ifdef __cplusplus
}
#endif
#endif /* PSA_CRYPTO_ENTROPY_DRIVER_H */

857
include/psa/crypto_driver.h → include/psa/crypto_se_driver.h
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@ -1,8 +1,14 @@
/** /**
* \file psa/crypto_driver.h * \file psa/crypto_se_driver.h
* \brief Platform Security Architecture cryptographic driver module * \brief PSA external cryptoprocessor driver module
* *
* This file describes the PSA Crypto Driver Model, containing functions for * This header declares types and function signatures for cryptography
* drivers that access key material via opaque references. This is
* meant for cryptoprocessors that have a separate key storage from the
* space in which the PSA Crypto implementation runs, typically secure
* elements.
*
* This file is part of the PSA Crypto Driver Model, containing functions for
* driver developers to implement to enable hardware to be called in a * driver developers to implement to enable hardware to be called in a
* standardized way by a PSA Cryptographic API implementation. The functions * standardized way by a PSA Cryptographic API implementation. The functions
* comprising the driver model, which driver authors implement, are not * comprising the driver model, which driver authors implement, are not
@ -25,29 +31,19 @@
* See the License for the specific language governing permissions and * See the License for the specific language governing permissions and
* limitations under the License. * limitations under the License.
*/ */
#ifndef PSA_CRYPTO_DRIVER_H #ifndef PSA_CRYPTO_SE_DRIVER_H
#define PSA_CRYPTO_DRIVER_H #define PSA_CRYPTO_SE_DRIVER_H
#include <stddef.h> #include "crypto_driver_common.h"
#include <stdint.h>
#ifdef __cplusplus #ifdef __cplusplus
extern "C" { extern "C" {
#endif #endif
/** The following types are redefinitions from the psa/crypto.h file. /** An internal designation of a key slot between the core part of the
* It is intended that these will be moved to a new common header file to * PSA Crypto implementation and the driver. The meaning of this value
* avoid duplication. They are included here for expediency in publication. * is driver-dependent. */
*/
typedef uint32_t psa_status_t;
typedef uint32_t psa_algorithm_t;
typedef uint8_t psa_encrypt_or_decrypt_t;
typedef uint32_t psa_key_slot_t; typedef uint32_t psa_key_slot_t;
typedef uint32_t psa_key_type_t;
typedef uint32_t psa_key_usage_t;
#define PSA_CRYPTO_DRIVER_ENCRYPT 1
#define PSA_CRYPTO_DRIVER_DECRYPT 0
/** \defgroup opaque_mac Opaque Message Authentication Code /** \defgroup opaque_mac Opaque Message Authentication Code
* Generation and authentication of Message Authentication Codes (MACs) using * Generation and authentication of Message Authentication Codes (MACs) using
@ -239,208 +235,6 @@ typedef struct {
} psa_drv_mac_opaque_t; } psa_drv_mac_opaque_t;
/**@}*/ /**@}*/
/** \defgroup transparent_mac Transparent Message Authentication Code
* Generation and authentication of Message Authentication Codes (MACs) using
* transparent keys can be done either as a single function call (via the
* `psa_drv_mac_transparent_generate_t` or `psa_drv_mac_transparent_verify_t`
* functions), or in parts using the following sequence:
* - `psa_drv_mac_transparent_setup_t`
* - `psa_drv_mac_transparent_update_t`
* - `psa_drv_mac_transparent_update_t`
* - ...
* - `psa_drv_mac_transparent_finish_t` or `psa_drv_mac_transparent_finish_verify_t`
*
* If a previously started Transparent MAC operation needs to be terminated, it
* should be done so by the `psa_drv_mac_transparent_abort_t`. Failure to do so may
* result in allocated resources not being freed or in other undefined
* behavior.
*
*/
/**@{*/
/** \brief The hardware-specific transparent-key MAC context structure
*
* The contents of this structure are implementation dependent and are
* therefore not described here.
*/
typedef struct psa_drv_mac_transparent_context_s psa_drv_mac_transparent_context_t;
/** \brief The function prototype for the setup operation of a
* transparent-key MAC operation
*
* Functions that implement the prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_mac_transparent_<ALGO>_<MAC_VARIANT>_setup
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the underlying primitive, and `MAC_VARIANT`
* is the specific variant of a MAC operation (such as HMAC or CMAC)
*
* \param[in,out] p_context A structure that will contain the
* hardware-specific MAC context
* \param[in] p_key A buffer containing the cleartext key material
* to be used in the operation
* \param[in] key_length The size in bytes of the key material
*
* \retval PSA_SUCCESS
* Success.
*/
typedef psa_status_t (*psa_drv_mac_transparent_setup_t)(psa_drv_mac_transparent_context_t *p_context,
const uint8_t *p_key,
size_t key_length);
/** \brief The function prototype for the update operation of a
* transparent-key MAC operation
*
* Functions that implement the prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_mac_transparent_<ALGO>_<MAC_VARIANT>_update
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the underlying algorithm, and `MAC_VARIANT`
* is the specific variant of a MAC operation (such as HMAC or CMAC)
*
* \param[in,out] p_context A hardware-specific structure for the
* previously-established MAC operation to be
* continued
* \param[in] p_input A buffer containing the message to be appended
* to the MAC operation
* \param[in] input_length The size in bytes of the input message buffer
*/
typedef psa_status_t (*psa_drv_mac_transparent_update_t)(psa_drv_mac_transparent_context_t *p_context,
const uint8_t *p_input,
size_t input_length);
/** \brief The function prototype for the finish operation of a
* transparent-key MAC operation
*
* Functions that implement the prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_mac_transparent_<ALGO>_<MAC_VARIANT>_finish
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the underlying algorithm, and `MAC_VARIANT` is
* the specific variant of a MAC operation (such as HMAC or CMAC)
*
* \param[in,out] p_context A hardware-specific structure for the
* previously started MAC operation to be
* finished
* \param[out] p_mac A buffer where the generated MAC will be placed
* \param[in] mac_length The size in bytes of the buffer that has been
* allocated for the `p_mac` buffer
*
* \retval PSA_SUCCESS
* Success.
*/
typedef psa_status_t (*psa_drv_mac_transparent_finish_t)(psa_drv_mac_transparent_context_t *p_context,
uint8_t *p_mac,
size_t mac_length);
/** \brief The function prototype for the finish and verify operation of a
* transparent-key MAC operation
*
* Functions that implement the prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_mac_transparent_<ALGO>_<MAC_VARIANT>_finish_verify
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the underlying algorithm, and `MAC_VARIANT` is
* the specific variant of a MAC operation (such as HMAC or CMAC)
*
* \param[in,out] p_context A hardware-specific structure for the
* previously started MAC operation to be
* verified and finished
* \param[in] p_mac A buffer containing the MAC that will be used
* for verification
* \param[in] mac_length The size in bytes of the data in the `p_mac`
* buffer
*
* \retval PSA_SUCCESS
* The operation completed successfully and the comparison matched
*/
typedef psa_status_t (*psa_drv_mac_transparent_finish_verify_t)(psa_drv_mac_transparent_context_t *p_context,
const uint8_t *p_mac,
size_t mac_length);
/** \brief The function prototype for the abort operation for a previously
* started transparent-key MAC operation
*
* Functions that implement the prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_mac_transparent_<ALGO>_<MAC_VARIANT>_abort
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the underlying algorithm, and `MAC_VARIANT` is
* the specific variant of a MAC operation (such as HMAC or CMAC)
*
* \param[in,out] p_context A hardware-specific structure for the
* previously started MAC operation to be
* aborted
*
*/
typedef psa_status_t (*psa_drv_mac_transparent_abort_t)(psa_drv_mac_transparent_context_t *p_context);
/** \brief The function prototype for a one-shot operation of a transparent-key
* MAC operation
*
* Functions that implement the prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_mac_transparent_<ALGO>_<MAC_VARIANT>
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the underlying algorithm, and `MAC_VARIANT` is
* the specific variant of a MAC operation (such as HMAC or CMAC)
*
* \param[in] p_input A buffer containing the data to be MACed
* \param[in] input_length The length in bytes of the `p_input` data
* \param[in] p_key A buffer containing the key material to be used
* for the MAC operation
* \param[in] key_length The length in bytes of the `p_key` data
* \param[in] alg The algorithm to be performed
* \param[out] p_mac The buffer where the resulting MAC will be placed
* upon success
* \param[in] mac_length The length in bytes of the `p_mac` buffer
*/
typedef psa_status_t (*psa_drv_mac_transparent_t)(const uint8_t *p_input,
size_t input_length,
const uint8_t *p_key,
size_t key_length,
psa_algorithm_t alg,
uint8_t *p_mac,
size_t mac_length);
/** \brief The function prototype for a one-shot operation of a transparent-key
* MAC Verify operation
*
* Functions that implement the prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_mac_transparent_<ALGO>_<MAC_VARIANT>_verify
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the underlying algorithm, and `MAC_VARIANT` is
* the specific variant of a MAC operation (such as HMAC or CMAC)
*
* \param[in] p_input A buffer containing the data to be MACed
* \param[in] input_length The length in bytes of the `p_input` data
* \param[in] p_key A buffer containing the key material to be used
* for the MAC operation
* \param[in] key_length The length in bytes of the `p_key` data
* \param[in] alg The algorithm to be performed
* \param[in] p_mac The MAC data to be compared
* \param[in] mac_length The length in bytes of the `p_mac` buffer
*
* \retval PSA_SUCCESS
* The operation completed successfully and the comparison matched
*/
typedef psa_status_t (*psa_drv_mac_transparent_verify_t)(const uint8_t *p_input,
size_t input_length,
const uint8_t *p_key,
size_t key_length,
psa_algorithm_t alg,
const uint8_t *p_mac,
size_t mac_length);
/**@}*/
/** \defgroup opaque_cipher Opaque Symmetric Ciphers /** \defgroup opaque_cipher Opaque Symmetric Ciphers
* *
* Encryption and Decryption using opaque keys in block modes other than ECB * Encryption and Decryption using opaque keys in block modes other than ECB
@ -618,269 +412,6 @@ typedef struct {
/**@}*/ /**@}*/
/** \defgroup transparent_cipher Transparent Block Cipher
* Encryption and Decryption using transparent keys in block modes other than
* ECB must be done in multiple parts, using the following flow:
* - `psa_drv_cipher_transparent_setup_t`
* - `psa_drv_cipher_transparent_set_iv_t` (optional depending upon block mode)
* - `psa_drv_cipher_transparent_update_t`
* - ...
* - `psa_drv_cipher_transparent_finish_t`
* If a previously started Transparent Cipher operation needs to be terminated,
* it should be done so by the `psa_drv_cipher_transparent_abort_t`. Failure to do
* so may result in allocated resources not being freed or in other undefined
* behavior.
*/
/**@{*/
/** \brief The hardware-specific transparent-key Cipher context structure
*
* The contents of this structure are implementation dependent and are
* therefore not described here.
*/
typedef struct psa_drv_cipher_transparent_context_s psa_drv_cipher_transparent_context_t;
/** \brief The function prototype for the setup operation of transparent-key
* block cipher operations.
* Functions that implement the prototype should be named in the following
* conventions:
* ~~~~~~~~~~~~~{.c}
* psa_drv_cipher_transparent_setup_<CIPHER_NAME>_<MODE>
* ~~~~~~~~~~~~~
* Where
* - `CIPHER_NAME` is the name of the underlying block cipher (i.e. AES or DES)
* - `MODE` is the block mode of the cipher operation (i.e. CBC or CTR)
* or for stream ciphers:
* ~~~~~~~~~~~~~{.c}
* psa_drv_cipher_transparent_setup_<CIPHER_NAME>
* ~~~~~~~~~~~~~
* Where `CIPHER_NAME` is the name of a stream cipher (i.e. RC4)
*
* \param[in,out] p_context A structure that will contain the
* hardware-specific cipher context
* \param[in] direction Indicates if the operation is an encrypt or a
* decrypt
* \param[in] p_key_data A buffer containing the cleartext key material
* to be used in the operation
* \param[in] key_data_size The size in bytes of the key material
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_cipher_transparent_setup_t)(psa_drv_cipher_transparent_context_t *p_context,
psa_encrypt_or_decrypt_t direction,
const uint8_t *p_key_data,
size_t key_data_size);
/** \brief The function prototype for the set initialization vector operation
* of transparent-key block cipher operations
* Functions that implement the prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_cipher_transparent_set_iv_<CIPHER_NAME>_<MODE>
* ~~~~~~~~~~~~~
* Where
* - `CIPHER_NAME` is the name of the underlying block cipher (i.e. AES or DES)
* - `MODE` is the block mode of the cipher operation (i.e. CBC or CTR)
*
* \param[in,out] p_context A structure that contains the previously setup
* hardware-specific cipher context
* \param[in] p_iv A buffer containing the initialization vecotr
* \param[in] iv_length The size in bytes of the contents of `p_iv`
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_cipher_transparent_set_iv_t)(psa_drv_cipher_transparent_context_t *p_context,
const uint8_t *p_iv,
size_t iv_length);
/** \brief The function prototype for the update operation of transparent-key
* block cipher operations.
*
* Functions that implement the prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_cipher_transparent_update_<CIPHER_NAME>_<MODE>
* ~~~~~~~~~~~~~
* Where
* - `CIPHER_NAME` is the name of the underlying block cipher (i.e. AES or DES)
* - `MODE` is the block mode of the cipher operation (i.e. CBC or CTR)
*
* \param[in,out] p_context A hardware-specific structure for the
* previously started cipher operation
* \param[in] p_input A buffer containing the data to be
* encrypted or decrypted
* \param[in] input_size The size in bytes of the `p_input` buffer
* \param[out] p_output A caller-allocated buffer where the
* generated output will be placed
* \param[in] output_size The size in bytes of the `p_output` buffer
* \param[out] p_output_length After completion, will contain the number
* of bytes placed in the `p_output` buffer
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_cipher_transparent_update_t)(psa_drv_cipher_transparent_context_t *p_context,
const uint8_t *p_input,
size_t input_size,
uint8_t *p_output,
size_t output_size,
size_t *p_output_length);
/** \brief The function prototype for the finish operation of transparent-key
* block cipher operations.
*
* Functions that implement the prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_cipher_transparent_finish_<CIPHER_NAME>_<MODE>
* ~~~~~~~~~~~~~
* Where
* - `CIPHER_NAME` is the name of the underlying block cipher (i.e. AES or DES)
* - `MODE` is the block mode of the cipher operation (i.e. CBC or CTR)
*
* \param[in,out] p_context A hardware-specific structure for the
* previously started cipher operation
* \param[out] p_output A caller-allocated buffer where the generated
* output will be placed
* \param[in] output_size The size in bytes of the `p_output` buffer
* \param[out] p_output_length After completion, will contain the number of
* bytes placed in the `p_output` buffer
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_cipher_transparent_finish_t)(psa_drv_cipher_transparent_context_t *p_context,
uint8_t *p_output,
size_t output_size,
size_t *p_output_length);
/** \brief The function prototype for the abort operation of transparent-key
* block cipher operations.
*
* Functions that implement the following prototype should be named in the
* following convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_cipher_transparent_abort_<CIPHER_NAME>_<MODE>
* ~~~~~~~~~~~~~
* Where
* - `CIPHER_NAME` is the name of the underlying block cipher (i.e. AES or DES)
* - `MODE` is the block mode of the cipher operation (i.e. CBC or CTR)
*
* \param[in,out] p_context A hardware-specific structure for the
* previously started cipher operation
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_cipher_transparent_abort_t)(psa_drv_cipher_transparent_context_t *p_context);
/**@}*/
/** \defgroup driver_digest Message Digests
*
* Generation and authentication of Message Digests (aka hashes) must be done
* in parts using the following sequence:
* - `psa_drv_hash_setup_t`
* - `psa_drv_hash_update_t`
* - ...
* - `psa_drv_hash_finish_t`
*
* If a previously started Message Digest operation needs to be terminated
* before the `psa_drv_hash_finish_t` operation is complete, it should be aborted
* by the `psa_drv_hash_abort_t`. Failure to do so may result in allocated
* resources not being freed or in other undefined behavior.
*/
/**@{*/
/** \brief The hardware-specific hash context structure
*
* The contents of this structure are implementation dependent and are
* therefore not described here
*/
typedef struct psa_drv_hash_context_s psa_drv_hash_context_t;
/** \brief The function prototype for the start operation of a hash (message
* digest) operation
*
* Functions that implement the prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_hash_<ALGO>_setup
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the underlying hash function
*
* \param[in,out] p_context A structure that will contain the
* hardware-specific hash context
*
* \retval PSA_SUCCESS Success.
*/
typedef psa_status_t (*psa_drv_hash_setup_t)(psa_drv_hash_context_t *p_context);
/** \brief The function prototype for the update operation of a hash (message
* digest) operation
*
* Functions that implement the prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_hash_<ALGO>_update
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the underlying algorithm
*
* \param[in,out] p_context A hardware-specific structure for the
* previously-established hash operation to be
* continued
* \param[in] p_input A buffer containing the message to be appended
* to the hash operation
* \param[in] input_length The size in bytes of the input message buffer
*/
typedef psa_status_t (*psa_drv_hash_update_t)(psa_drv_hash_context_t *p_context,
const uint8_t *p_input,
size_t input_length);
/** \brief The prototype for the finish operation of a hash (message digest)
* operation
*
* Functions that implement the prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_hash_<ALGO>_finish
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the underlying algorithm
*
* \param[in,out] p_context A hardware-specific structure for the
* previously started hash operation to be
* fiinished
* \param[out] p_output A buffer where the generated digest will be
* placed
* \param[in] output_size The size in bytes of the buffer that has been
* allocated for the `p_output` buffer
* \param[out] p_output_length The number of bytes placed in `p_output` after
* success
*
* \retval PSA_SUCCESS
* Success.
*/
typedef psa_status_t (*psa_drv_hash_finish_t)(psa_drv_hash_context_t *p_context,
uint8_t *p_output,
size_t output_size,
size_t *p_output_length);
/** \brief The function prototype for the abort operation of a hash (message
* digest) operation
*
* Functions that implement the prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_hash_<ALGO>_abort
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the underlying algorithm
*
* \param[in,out] p_context A hardware-specific structure for the previously
* started hash operation to be aborted
*/
typedef void (*psa_drv_hash_abort_t)(psa_drv_hash_context_t *p_context);
/**@}*/
/** \defgroup opaque_asymmetric Opaque Asymmetric Cryptography /** \defgroup opaque_asymmetric Opaque Asymmetric Cryptography
* *
* Since the amount of data that can (or should) be encrypted or signed using * Since the amount of data that can (or should) be encrypted or signed using
@ -1033,176 +564,6 @@ typedef struct {
/**@}*/ /**@}*/
/** \defgroup transparent_asymmetric Transparent Asymmetric Cryptography
*
* Since the amount of data that can (or should) be encrypted or signed using
* asymmetric keys is limited by the key size, asymmetric key operations using
* transparent keys must be done in single function calls.
*/
/**@{*/
/**
* \brief A function that signs a hash or short message with a transparent
* asymmetric private key
*
* Functions that implement the prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_asymmetric_<ALGO>_sign
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the signing algorithm
*
* \param[in] p_key A buffer containing the private key
* material
* \param[in] key_size The size in bytes of the `p_key` data
* \param[in] alg A signature algorithm that is compatible
* with the type of `p_key`
* \param[in] p_hash The hash or message to sign
* \param[in] hash_length Size of the `p_hash` buffer in bytes
* \param[out] p_signature Buffer where the signature is to be written
* \param[in] signature_size Size of the `p_signature` buffer in bytes
* \param[out] p_signature_length On success, the number of bytes
* that make up the returned signature value
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_asymmetric_transparent_sign_t)(const uint8_t *p_key,
size_t key_size,
psa_algorithm_t alg,
const uint8_t *p_hash,
size_t hash_length,
uint8_t *p_signature,
size_t signature_size,
size_t *p_signature_length);
/**
* \brief A function that verifies the signature a hash or short message using
* a transparent asymmetric public key
*
* Functions that implement the prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_asymmetric_<ALGO>_verify
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the signing algorithm
*
* \param[in] p_key A buffer containing the public key material
* \param[in] key_size The size in bytes of the `p_key` data
* \param[in] alg A signature algorithm that is compatible with
* the type of `key`
* \param[in] p_hash The hash or message whose signature is to be
* verified
* \param[in] hash_length Size of the `p_hash` buffer in bytes
* \param[in] p_signature Buffer containing the signature to verify
* \param[in] signature_length Size of the `p_signature` buffer in bytes
*
* \retval PSA_SUCCESS
* The signature is valid.
*/
typedef psa_status_t (*psa_drv_asymmetric_transparent_verify_t)(const uint8_t *p_key,
size_t key_size,
psa_algorithm_t alg,
const uint8_t *p_hash,
size_t hash_length,
const uint8_t *p_signature,
size_t signature_length);
/**
* \brief A function that encrypts a short message with a transparent
* asymmetric public key
*
* Functions that implement the prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_asymmetric_<ALGO>_encrypt
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the encryption algorithm
*
* \param[in] p_key A buffer containing the public key material
* \param[in] key_size The size in bytes of the `p_key` data
* \param[in] alg An asymmetric encryption algorithm that is
* compatible with the type of `key`
* \param[in] p_input The message to encrypt
* \param[in] input_length Size of the `p_input` buffer in bytes
* \param[in] p_salt A salt or label, if supported by the
* encryption algorithm
* If the algorithm does not support a
* salt, pass `NULL`
* If the algorithm supports an optional
* salt and you do not want to pass a salt,
* pass `NULL`.
* For #PSA_ALG_RSA_PKCS1V15_CRYPT, no salt is
* supported.
* \param[in] salt_length Size of the `p_salt` buffer in bytes
* If `p_salt` is `NULL`, pass 0.
* \param[out] p_output Buffer where the encrypted message is to
* be written
* \param[in] output_size Size of the `p_output` buffer in bytes
* \param[out] p_output_length On success, the number of bytes
* that make up the returned output
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_asymmetric_transparent_encrypt_t)(const uint8_t *p_key,
size_t key_size,
psa_algorithm_t alg,
const uint8_t *p_input,
size_t input_length,
const uint8_t *p_salt,
size_t salt_length,
uint8_t *p_output,
size_t output_size,
size_t *p_output_length);
/**
* \brief Decrypt a short message with a transparent asymmetric private key
*
* Functions that implement the prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_asymmetric_<ALGO>_decrypt
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the encryption algorithm
*
* \param[in] p_key A buffer containing the private key material
* \param[in] key_size The size in bytes of the `p_key` data
* \param[in] alg An asymmetric encryption algorithm that is
* compatible with the type of `key`
* \param[in] p_input The message to decrypt
* \param[in] input_length Size of the `p_input` buffer in bytes
* \param[in] p_salt A salt or label, if supported by the
* encryption algorithm
* If the algorithm does not support a
* salt, pass `NULL`.
* If the algorithm supports an optional
* salt and you do not want to pass a salt,
* pass `NULL`.
* For #PSA_ALG_RSA_PKCS1V15_CRYPT, no salt is
* supported
* \param[in] salt_length Size of the `p_salt` buffer in bytes
* If `p_salt` is `NULL`, pass 0
* \param[out] p_output Buffer where the decrypted message is to
* be written
* \param[in] output_size Size of the `p_output` buffer in bytes
* \param[out] p_output_length On success, the number of bytes
* that make up the returned output
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_asymmetric_transparent_decrypt_t)(const uint8_t *p_key,
size_t key_size,
psa_algorithm_t alg,
const uint8_t *p_input,
size_t input_length,
const uint8_t *p_salt,
size_t salt_length,
uint8_t *p_output,
size_t output_size,
size_t *p_output_length);
/**@}*/
/** \defgroup aead_opaque AEAD Opaque /** \defgroup aead_opaque AEAD Opaque
* Authenticated Encryption with Additional Data (AEAD) operations with opaque * Authenticated Encryption with Additional Data (AEAD) operations with opaque
* keys must be done in one function call. While this creates a burden for * keys must be done in one function call. While this creates a burden for
@ -1310,192 +671,6 @@ typedef struct {
} psa_drv_aead_opaque_t; } psa_drv_aead_opaque_t;
/**@}*/ /**@}*/
/** \defgroup aead_transparent AEAD Transparent
*
* Authenticated Encryption with Additional Data (AEAD) operations with
* transparent keys must be done in one function call. While this creates a
* burden for implementers as there must be sufficient space in memory for the
* entire message, it prevents decrypted data from being made available before
* the authentication operation is complete and the data is known to be
* authentic.
*/
/**@{*/
/** Process an authenticated encryption operation using an opaque key.
*
* Functions that implement the prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_aead_<ALGO>_encrypt
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the AEAD algorithm
*
* \param[in] p_key A pointer to the key material
* \param[in] key_length The size in bytes of the key material
* \param[in] alg The AEAD algorithm to compute
* (\c PSA_ALG_XXX value such that
* #PSA_ALG_IS_AEAD(`alg`) is true)
* \param[in] nonce Nonce or IV to use
* \param[in] nonce_length Size of the `nonce` buffer in bytes
* \param[in] additional_data Additional data that will be MACed
* but not encrypted.
* \param[in] additional_data_length Size of `additional_data` in bytes
* \param[in] plaintext Data that will be MACed and
* encrypted.
* \param[in] plaintext_length Size of `plaintext` in bytes
* \param[out] ciphertext Output buffer for the authenticated and
* encrypted data. The additional data is
* not part of this output. For algorithms
* where the encrypted data and the
* authentication tag are defined as
* separate outputs, the authentication
* tag is appended to the encrypted data.
* \param[in] ciphertext_size Size of the `ciphertext` buffer in
* bytes
* This must be at least
* #PSA_AEAD_ENCRYPT_OUTPUT_SIZE(`alg`,
* `plaintext_length`).
* \param[out] ciphertext_length On success, the size of the output in
* the `ciphertext` buffer
*
* \retval #PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_aead_transparent_encrypt_t)(const uint8_t *p_key,
size_t key_length,
psa_algorithm_t alg,
const uint8_t *nonce,
size_t nonce_length,
const uint8_t *additional_data,
size_t additional_data_length,
const uint8_t *plaintext,
size_t plaintext_length,
uint8_t *ciphertext,
size_t ciphertext_size,
size_t *ciphertext_length);
/** Process an authenticated decryption operation using an opaque key.
*
* Functions that implement the prototype should be named in the following
* convention:
* ~~~~~~~~~~~~~{.c}
* psa_drv_aead_<ALGO>_decrypt
* ~~~~~~~~~~~~~
* Where `ALGO` is the name of the AEAD algorithm
* \param[in] p_key A pointer to the key material
* \param[in] key_length The size in bytes of the key material
* \param[in] alg The AEAD algorithm to compute
* (\c PSA_ALG_XXX value such that
* #PSA_ALG_IS_AEAD(`alg`) is true)
* \param[in] nonce Nonce or IV to use
* \param[in] nonce_length Size of the `nonce` buffer in bytes
* \param[in] additional_data Additional data that has been MACed
* but not encrypted
* \param[in] additional_data_length Size of `additional_data` in bytes
* \param[in] ciphertext Data that has been MACed and
* encrypted
* For algorithms where the encrypted data
* and the authentication tag are defined
* as separate inputs, the buffer must
* contain the encrypted data followed by
* the authentication tag.
* \param[in] ciphertext_length Size of `ciphertext` in bytes
* \param[out] plaintext Output buffer for the decrypted data
* \param[in] plaintext_size Size of the `plaintext` buffer in
* bytes
* This must be at least
* #PSA_AEAD_DECRYPT_OUTPUT_SIZE(`alg`,
* `ciphertext_length`).
* \param[out] plaintext_length On success, the size of the output
* in the \b plaintext buffer
*
* \retval #PSA_SUCCESS
* Success.
*/
typedef psa_status_t (*psa_drv_aead_transparent_decrypt_t)(const uint8_t *p_key,
size_t key_length,
psa_algorithm_t alg,
const uint8_t *nonce,
size_t nonce_length,
const uint8_t *additional_data,
size_t additional_data_length,
const uint8_t *ciphertext,
size_t ciphertext_length,
uint8_t *plaintext,
size_t plaintext_size,
size_t *plaintext_length);
/**@}*/
/** \defgroup driver_rng Entropy Generation
*/
/**@{*/
/** \brief A hardware-specific structure for a entropy providing hardware
*/
typedef struct psa_drv_entropy_context_s psa_drv_entropy_context_t;
/** \brief Initialize an entropy driver
*
*
* \param[in,out] p_context A hardware-specific structure
* containing any context information for
* the implementation
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_entropy_init_t)(psa_drv_entropy_context_t *p_context);
/** \brief Get a specified number of bits from the entropy source
*
* It retrives `buffer_size` bytes of data from the entropy source. The entropy
* source will always fill the provided buffer to its full size, however, most
* entropy sources have biases, and the actual amount of entropy contained in
* the buffer will be less than the number of bytes.
* The driver will return the actual number of bytes of entropy placed in the
* buffer in `p_received_entropy_bytes`.
* A PSA Crypto API implementation will likely feed the output of this function
* into a Digital Random Bit Generator (DRBG), and typically has a minimum
* amount of entropy that it needs.
* To accomplish this, the PSA Crypto implementation should be designed to call
* this function multiple times until it has received the required amount of
* entropy from the entropy source.
*
* \param[in,out] p_context A hardware-specific structure
* containing any context information
* for the implementation
* \param[out] p_buffer A caller-allocated buffer for the
* retrieved entropy to be placed in
* \param[in] buffer_size The allocated size of `p_buffer`
* \param[out] p_received_entropy_bits The amount of entropy (in bits)
* actually provided in `p_buffer`
*
* \retval PSA_SUCCESS
*/
typedef psa_status_t (*psa_drv_entropy_get_bits_t)(psa_drv_entropy_context_t *p_context,
uint8_t *p_buffer,
uint32_t buffer_size,
uint32_t *p_received_entropy_bits);
/**
* \brief A struct containing all of the function pointers needed to interface
* to an entropy source
*
* PSA Crypto API implementations should populate instances of the table as
* appropriate upon startup.
*
* If one of the functions is not implemented, it should be set to NULL.
*/
typedef struct {
/** Function that performs initialization for the entropy source */
psa_drv_entropy_init_t *p_init;
/** Function that performs the get_bits operation for the entropy source
*/
psa_drv_entropy_get_bits_t *p_get_bits;
} psa_drv_entropy_t;
/**@}*/
/** \defgroup driver_key_management Key Management /** \defgroup driver_key_management Key Management
* Currently, key management is limited to importing keys in the clear, * Currently, key management is limited to importing keys in the clear,
* destroying keys, and exporting keys in the clear. * destroying keys, and exporting keys in the clear.
@ -1784,4 +959,4 @@ typedef struct {
} }
#endif #endif
#endif /* PSA_CRYPTO_DRIVER_H */ #endif /* PSA_CRYPTO_SE_DRIVER_H */

72
include/psa/crypto_sizes.h
View File

@ -50,6 +50,42 @@
#include MBEDTLS_CONFIG_FILE #include MBEDTLS_CONFIG_FILE
#endif #endif
#define PSA_BITS_TO_BYTES(bits) (((bits) + 7) / 8)
#define PSA_BYTES_TO_BITS(bytes) ((bytes) * 8)
/** The size of the output of psa_hash_finish(), in bytes.
*
* This is also the hash size that psa_hash_verify() expects.
*
* \param alg A hash algorithm (\c PSA_ALG_XXX value such that
* #PSA_ALG_IS_HASH(\p alg) is true), or an HMAC algorithm
* (#PSA_ALG_HMAC(\c hash_alg) where \c hash_alg is a
* hash algorithm).
*
* \return The hash size for the specified hash algorithm.
* If the hash algorithm is not recognized, return 0.
* An implementation may return either 0 or the correct size
* for a hash algorithm that it recognizes, but does not support.
*/
#define PSA_HASH_SIZE(alg) \
( \
PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_MD2 ? 16 : \
PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_MD4 ? 16 : \
PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_MD5 ? 16 : \
PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_RIPEMD160 ? 20 : \
PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_1 ? 20 : \
PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_224 ? 28 : \
PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_256 ? 32 : \
PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_384 ? 48 : \
PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_512 ? 64 : \
PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_512_224 ? 28 : \
PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA_512_256 ? 32 : \
PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA3_224 ? 28 : \
PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA3_256 ? 32 : \
PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA3_384 ? 48 : \
PSA_ALG_HMAC_GET_HASH(alg) == PSA_ALG_SHA3_512 ? 64 : \
0)
/** \def PSA_HASH_MAX_SIZE /** \def PSA_HASH_MAX_SIZE
* *
* Maximum size of a hash. * Maximum size of a hash.
@ -84,6 +120,26 @@
*/ */
#define PSA_MAC_MAX_SIZE PSA_HASH_MAX_SIZE #define PSA_MAC_MAX_SIZE PSA_HASH_MAX_SIZE
/** The tag size for an AEAD algorithm, in bytes.
*
* \param alg An AEAD algorithm
* (\c PSA_ALG_XXX value such that
* #PSA_ALG_IS_AEAD(\p alg) is true).
*
* \return The tag size for the specified algorithm.
* If the AEAD algorithm does not have an identified
* tag that can be distinguished from the rest of
* the ciphertext, return 0.
* If the AEAD algorithm is not recognized, return 0.
* An implementation may return either 0 or a
* correct size for an AEAD algorithm that it
* recognizes, but does not support.
*/
#define PSA_AEAD_TAG_LENGTH(alg) \
(PSA_ALG_IS_AEAD(alg) ? \
(((alg) & PSA_ALG_AEAD_TAG_LENGTH_MASK) >> PSA_AEAD_TAG_LENGTH_OFFSET) : \
0)
/* The maximum size of an RSA key on this implementation, in bits. /* The maximum size of an RSA key on this implementation, in bits.
* This is a vendor-specific macro. * This is a vendor-specific macro.
* *
@ -236,6 +292,22 @@
(plaintext_length) - PSA_AEAD_TAG_LENGTH(alg) : \ (plaintext_length) - PSA_AEAD_TAG_LENGTH(alg) : \
0) 0)
#define PSA_RSA_MINIMUM_PADDING_SIZE(alg) \
(PSA_ALG_IS_RSA_OAEP(alg) ? \
2 * PSA_HASH_FINAL_SIZE(PSA_ALG_RSA_OAEP_GET_HASH(alg)) + 1 : \
11 /*PKCS#1v1.5*/)
/**
* \brief ECDSA signature size for a given curve bit size
*
* \param curve_bits Curve size in bits.
* \return Signature size in bytes.
*
* \note This macro returns a compile-time constant if its argument is one.
*/
#define PSA_ECDSA_SIGNATURE_SIZE(curve_bits) \
(PSA_BITS_TO_BYTES(curve_bits) * 2)
/** Safe signature buffer size for psa_asymmetric_sign(). /** Safe signature buffer size for psa_asymmetric_sign().
* *
* This macro returns a safe buffer size for a signature using a key * This macro returns a safe buffer size for a signature using a key

101
include/psa/crypto_types.h Normal file
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@ -0,0 +1,101 @@
/**
* \file psa/crypto_types.h
*
* \brief PSA cryptography module: type aliases.
*
* \note This file may not be included directly. Applications must
* include psa/crypto.h. Drivers must include the appropriate driver
* header file.
*
* This file contains portable definitions of integral types for properties
* of cryptographic keys, designations of cryptographic algorithms, and
* error codes returned by the library.
*
* This header file does not declare any function.
*/
/*
* Copyright (C) 2018, ARM Limited, All Rights Reserved
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* This file is part of mbed TLS (https://tls.mbed.org)
*/
#ifndef PSA_CRYPTO_TYPES_H
#define PSA_CRYPTO_TYPES_H
#include <stdint.h>
/** \defgroup error Error codes
* @{
*/
/**
* \brief Function return status.
*
* This is either #PSA_SUCCESS (which is zero), indicating success,
* or a nonzero value indicating that an error occurred. Errors are
* encoded as one of the \c PSA_ERROR_xxx values defined here.
*/
typedef int32_t psa_status_t;
/**@}*/
/** \defgroup crypto_types Key and algorithm types
* @{
*/
/** \brief Encoding of a key type.
*/
typedef uint32_t psa_key_type_t;
/** The type of PSA elliptic curve identifiers. */
typedef uint16_t psa_ecc_curve_t;
/** \brief Encoding of a cryptographic algorithm.
*
* For algorithms that can be applied to multiple key types, this type
* does not encode the key type. For example, for symmetric ciphers
* based on a block cipher, #psa_algorithm_t encodes the block cipher
* mode and the padding mode while the block cipher itself is encoded
* via #psa_key_type_t.
*/
typedef uint32_t psa_algorithm_t;
/**@}*/
/** \defgroup key_lifetimes Key lifetimes
* @{
*/
/** Encoding of key lifetimes.
*/
typedef uint32_t psa_key_lifetime_t;
/** Encoding of identifiers of persistent keys.
*/
typedef uint32_t psa_key_id_t;
/**@}*/
/** \defgroup policy Key policies
* @{
*/
/** \brief Encoding of permitted usage on a key. */
typedef uint32_t psa_key_usage_t;
/**@}*/
#endif /* PSA_CRYPTO_TYPES_H */

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include/psa/crypto_values.h Normal file
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2
programs/Makefile
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@ -103,7 +103,7 @@ EXTRA_GENERATED += psa/psa_constant_names_generated.c
endif endif
psa/psa_constant_names$(EXEXT): psa/psa_constant_names_generated.c psa/psa_constant_names$(EXEXT): psa/psa_constant_names_generated.c
psa/psa_constant_names_generated.c: ../scripts/generate_psa_constants.py ../include/psa/crypto.h psa/psa_constant_names_generated.c: ../scripts/generate_psa_constants.py ../include/psa/crypto_values.h
../scripts/generate_psa_constants.py ../scripts/generate_psa_constants.py
aes/aescrypt2$(EXEXT): aes/aescrypt2.c $(DEP) aes/aescrypt2$(EXEXT): aes/aescrypt2.c $(DEP)

2
scripts/generate_psa_constants.py
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@ -285,5 +285,5 @@ def generate_psa_constants(header_file_name, output_file_name):
if __name__ == '__main__': if __name__ == '__main__':
if not os.path.isdir('programs') and os.path.isdir('../programs'): if not os.path.isdir('programs') and os.path.isdir('../programs'):
os.chdir('..') os.chdir('..')
generate_psa_constants('include/psa/crypto.h', generate_psa_constants('include/psa/crypto_values.h',
'programs/psa/psa_constant_names_generated.c') 'programs/psa/psa_constant_names_generated.c')

7
visualc/VS2010/mbedTLS.vcxproj
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@ -226,11 +226,16 @@
<ClInclude Include="..\..\include\mbedtls\x509_csr.h" /> <ClInclude Include="..\..\include\mbedtls\x509_csr.h" />
<ClInclude Include="..\..\include\mbedtls\xtea.h" /> <ClInclude Include="..\..\include\mbedtls\xtea.h" />
<ClInclude Include="..\..\include\psa\crypto.h" /> <ClInclude Include="..\..\include\psa\crypto.h" />
<ClInclude Include="..\..\include\psa\crypto_driver.h" /> <ClInclude Include="..\..\include\psa\crypto_accel_driver.h" />
<ClInclude Include="..\..\include\psa\crypto_driver_common.h" />
<ClInclude Include="..\..\include\psa\crypto_entropy_driver.h" />
<ClInclude Include="..\..\include\psa\crypto_extra.h" /> <ClInclude Include="..\..\include\psa\crypto_extra.h" />
<ClInclude Include="..\..\include\psa\crypto_platform.h" /> <ClInclude Include="..\..\include\psa\crypto_platform.h" />
<ClInclude Include="..\..\include\psa\crypto_se_driver.h" />
<ClInclude Include="..\..\include\psa\crypto_sizes.h" /> <ClInclude Include="..\..\include\psa\crypto_sizes.h" />
<ClInclude Include="..\..\include\psa\crypto_struct.h" /> <ClInclude Include="..\..\include\psa\crypto_struct.h" />
<ClInclude Include="..\..\include\psa\crypto_types.h" />
<ClInclude Include="..\..\include\psa\crypto_values.h" />
<ClInclude Include="..\..\library/psa_crypto_core.h" /> <ClInclude Include="..\..\library/psa_crypto_core.h" />
<ClInclude Include="..\..\library/psa_crypto_invasive.h" /> <ClInclude Include="..\..\library/psa_crypto_invasive.h" />
<ClInclude Include="..\..\library/psa_crypto_slot_management.h" /> <ClInclude Include="..\..\library/psa_crypto_slot_management.h" />