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Merge remote-tracking branch 'public/pr/1508' into development-proposed

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* public/pr/1508:
  Update ctr_drbg.h
  Update ctr_drbg.h
This commit is contained in:
Manuel Pégourié-Gonnard 2018-04-18 11:55:30 +02:00
commit 01d72df113
1 changed files with 33 additions and 25 deletions
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50
include/mbedtls/ctr_drbg.h
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@ -1,10 +1,15 @@
/**
* \file ctr_drbg.h
*
* \brief CTR_DRBG is based on AES-256, as defined in <em>NIST SP 800-90A:
* Recommendation for Random Number Generation Using Deterministic
* Random Bit Generators</em>.
* \brief This file contains CTR_DRBG definitions and functions.
*
* CTR_DRBG is a standardized way of building a PRNG from a block-cipher
* in counter mode operation, as defined in <em>NIST SP 800-90A:
* Recommendation for Random Number Generation Using Deterministic Random
* Bit Generators</em>.
*
* The Mbed TLS implementation of CTR_DRBG uses AES-256 as the underlying
* block cipher.
*/
/*
* Copyright (C) 2006-2018, Arm Limited (or its affiliates), All Rights Reserved
@ -156,8 +161,8 @@ void mbedtls_ctr_drbg_init( mbedtls_ctr_drbg_context *ctx );
identifiers. Can be NULL.
* \param len The length of the personalization data.
*
* \return \c 0 on success, or
* #MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED on failure.
* \return \c 0 on success.
* \return #MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED on failure.
*/
int mbedtls_ctr_drbg_seed( mbedtls_ctr_drbg_context *ctx,
int (*f_entropy)(void *, unsigned char *, size_t),
@ -216,8 +221,8 @@ void mbedtls_ctr_drbg_set_reseed_interval( mbedtls_ctr_drbg_context *ctx,
* \param additional Additional data to add to the state. Can be NULL.
* \param len The length of the additional data.
*
* \return \c 0 on success, or
* #MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED on failure.
* \return \c 0 on success.
* \return #MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED on failure.
*/
int mbedtls_ctr_drbg_reseed( mbedtls_ctr_drbg_context *ctx,
const unsigned char *additional, size_t len );
@ -225,13 +230,15 @@ int mbedtls_ctr_drbg_reseed( mbedtls_ctr_drbg_context *ctx,
/**
* \brief This function updates the state of the CTR_DRBG context.
*
* \note If \p add_len is greater than
* #MBEDTLS_CTR_DRBG_MAX_SEED_INPUT, only the first
* #MBEDTLS_CTR_DRBG_MAX_SEED_INPUT Bytes are used.
* The remaining Bytes are silently discarded.
*
* \param ctx The CTR_DRBG context.
* \param additional The data to update the state with.
* \param add_len Length of \p additional data.
*
* \note If \p add_len is greater than #MBEDTLS_CTR_DRBG_MAX_SEED_INPUT,
* only the first #MBEDTLS_CTR_DRBG_MAX_SEED_INPUT Bytes are used.
* The remaining Bytes are silently discarded.
*/
void mbedtls_ctr_drbg_update( mbedtls_ctr_drbg_context *ctx,
const unsigned char *additional, size_t add_len );
@ -249,8 +256,8 @@ void mbedtls_ctr_drbg_update( mbedtls_ctr_drbg_context *ctx,
* \param additional Additional data to update. Can be NULL.
* \param add_len The length of the additional data.
*
* \return \c 0 on success, or
* #MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED or
* \return \c 0 on success.
* \return #MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED or
* #MBEDTLS_ERR_CTR_DRBG_REQUEST_TOO_BIG on failure.
*/
int mbedtls_ctr_drbg_random_with_add( void *p_rng,
@ -267,8 +274,8 @@ int mbedtls_ctr_drbg_random_with_add( void *p_rng,
* \param output The buffer to fill.
* \param output_len The length of the buffer.
*
* \return \c 0 on success, or
* #MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED or
* \return \c 0 on success.
* \return #MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED or
* #MBEDTLS_ERR_CTR_DRBG_REQUEST_TOO_BIG on failure.
*/
int mbedtls_ctr_drbg_random( void *p_rng,
@ -281,9 +288,9 @@ int mbedtls_ctr_drbg_random( void *p_rng,
* \param ctx The CTR_DRBG context.
* \param path The name of the file.
*
* \return \c 0 on success,
* #MBEDTLS_ERR_CTR_DRBG_FILE_IO_ERROR on file error, or
* #MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED on
* \return \c 0 on success.
* \return #MBEDTLS_ERR_CTR_DRBG_FILE_IO_ERROR on file error.
* \return #MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED on
* failure.
*/
int mbedtls_ctr_drbg_write_seed_file( mbedtls_ctr_drbg_context *ctx, const char *path );
@ -295,9 +302,9 @@ int mbedtls_ctr_drbg_write_seed_file( mbedtls_ctr_drbg_context *ctx, const char
* \param ctx The CTR_DRBG context.
* \param path The name of the file.
*
* \return \c 0 on success,
* #MBEDTLS_ERR_CTR_DRBG_FILE_IO_ERROR on file error,
* #MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED or
* \return \c 0 on success.
* \return #MBEDTLS_ERR_CTR_DRBG_FILE_IO_ERROR on file error.
* \return #MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED or
* #MBEDTLS_ERR_CTR_DRBG_INPUT_TOO_BIG on failure.
*/
int mbedtls_ctr_drbg_update_seed_file( mbedtls_ctr_drbg_context *ctx, const char *path );
@ -306,7 +313,8 @@ int mbedtls_ctr_drbg_update_seed_file( mbedtls_ctr_drbg_context *ctx, const char
/**
* \brief The CTR_DRBG checkup routine.
*
* \return \c 0 on success, or \c 1 on failure.
* \return \c 0 on success.
* \return \c 1 on failure.
*/
int mbedtls_ctr_drbg_self_test( int verbose );