mirror of
https://github.com/yuzu-emu/mbedtls.git
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da19f4c79f
Summary of merge conflicts: include/mbedtls/ecdh.h -> documentation style include/mbedtls/ecdsa.h -> documentation style include/mbedtls/ecp.h -> alt style, new error codes, documentation style include/mbedtls/error.h -> new error codes library/error.c -> new error codes (generated anyway) library/ecp.c: - code of an extracted function was changed library/ssl_cli.c: - code addition on one side near code change on the other side (ciphersuite validation) library/x509_crt.c -> various things - top fo file: helper structure added near old zeroize removed - documentation of find_parent_in()'s signature: improved on one side, added arguments on the other side - documentation of find_parent()'s signature: same as above - verify_chain(): variables initialised later to give compiler an opportunity to warn us if not initialised on a code path - find_parent(): funcion structure completely changed, for some reason git tried to insert a paragraph of the old structure... - merge_flags_with_cb(): data structure changed, one line was fixed with a cast to keep MSVC happy, this cast is already in the new version - in verify_restratable(): adjacent independent changes (function signature on one line, variable type on the next) programs/ssl/ssl_client2.c: - testing for IN_PROGRESS return code near idle() (event-driven): don't wait for data in the the socket if ECP_IN_PROGRESS tests/data_files/Makefile: adjacent independent additions tests/suites/test_suite_ecdsa.data: adjacent independent additions tests/suites/test_suite_x509parse.data: adjacent independent additions * development: (1059 commits) Change symlink to hardlink to avoid permission issues Fix out-of-tree testing symlinks on Windows Updated version number to 2.10.0 for release Add a disabled CMAC define in the no-entropy configuration Adapt the ARIA test cases for new ECB function Fix file permissions for ssl.h Add ChangeLog entry for PR#1651 Fix MicroBlaze register typo. Fix typo in doc and copy missing warning Fix edit mistake in cipher_wrap.c Update CTR doc for the 64-bit block cipher Update CTR doc for other 128-bit block ciphers Slightly tune ARIA CTR documentation Remove double declaration of mbedtls_ssl_list_ciphersuites Update CTR documentation Use zeroize function from new platform_util Move to new header style for ALT implementations Add ifdef for selftest in header file Fix typo in comments Use more appropriate type for local variable ...
720 lines
20 KiB
C
720 lines
20 KiB
C
/*
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* Public Key abstraction layer: wrapper functions
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*
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* Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* This file is part of mbed TLS (https://tls.mbed.org)
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*/
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#if !defined(MBEDTLS_CONFIG_FILE)
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#include "mbedtls/config.h"
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#else
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#include MBEDTLS_CONFIG_FILE
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#endif
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#if defined(MBEDTLS_PK_C)
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#include "mbedtls/pk_internal.h"
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/* Even if RSA not activated, for the sake of RSA-alt */
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#include "mbedtls/rsa.h"
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#include <string.h>
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#if defined(MBEDTLS_ECP_C)
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#include "mbedtls/ecp.h"
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#endif
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#if defined(MBEDTLS_ECDSA_C)
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#include "mbedtls/ecdsa.h"
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#endif
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#if defined(MBEDTLS_PK_RSA_ALT_SUPPORT)
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#include "mbedtls/platform_util.h"
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#endif
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#if defined(MBEDTLS_PLATFORM_C)
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#include "mbedtls/platform.h"
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#else
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#include <stdlib.h>
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#define mbedtls_calloc calloc
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#define mbedtls_free free
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#endif
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#include <limits.h>
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#include <stdint.h>
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#if defined(MBEDTLS_RSA_C)
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static int rsa_can_do( mbedtls_pk_type_t type )
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{
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return( type == MBEDTLS_PK_RSA ||
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type == MBEDTLS_PK_RSASSA_PSS );
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}
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static size_t rsa_get_bitlen( const void *ctx )
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{
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const mbedtls_rsa_context * rsa = (const mbedtls_rsa_context *) ctx;
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return( 8 * mbedtls_rsa_get_len( rsa ) );
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}
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static int rsa_verify_wrap( void *ctx, mbedtls_md_type_t md_alg,
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const unsigned char *hash, size_t hash_len,
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const unsigned char *sig, size_t sig_len )
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{
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int ret;
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mbedtls_rsa_context * rsa = (mbedtls_rsa_context *) ctx;
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size_t rsa_len = mbedtls_rsa_get_len( rsa );
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#if SIZE_MAX > UINT_MAX
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if( md_alg == MBEDTLS_MD_NONE && UINT_MAX < hash_len )
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return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
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#endif /* SIZE_MAX > UINT_MAX */
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if( sig_len < rsa_len )
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return( MBEDTLS_ERR_RSA_VERIFY_FAILED );
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if( ( ret = mbedtls_rsa_pkcs1_verify( rsa, NULL, NULL,
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MBEDTLS_RSA_PUBLIC, md_alg,
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(unsigned int) hash_len, hash, sig ) ) != 0 )
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return( ret );
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/* The buffer contains a valid signature followed by extra data.
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* We have a special error code for that so that so that callers can
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* use mbedtls_pk_verify() to check "Does the buffer start with a
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* valid signature?" and not just "Does the buffer contain a valid
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* signature?". */
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if( sig_len > rsa_len )
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return( MBEDTLS_ERR_PK_SIG_LEN_MISMATCH );
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return( 0 );
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}
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static int rsa_sign_wrap( void *ctx, mbedtls_md_type_t md_alg,
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const unsigned char *hash, size_t hash_len,
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unsigned char *sig, size_t *sig_len,
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int (*f_rng)(void *, unsigned char *, size_t), void *p_rng )
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{
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mbedtls_rsa_context * rsa = (mbedtls_rsa_context *) ctx;
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#if SIZE_MAX > UINT_MAX
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if( md_alg == MBEDTLS_MD_NONE && UINT_MAX < hash_len )
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return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
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#endif /* SIZE_MAX > UINT_MAX */
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*sig_len = mbedtls_rsa_get_len( rsa );
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return( mbedtls_rsa_pkcs1_sign( rsa, f_rng, p_rng, MBEDTLS_RSA_PRIVATE,
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md_alg, (unsigned int) hash_len, hash, sig ) );
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}
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static int rsa_decrypt_wrap( void *ctx,
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const unsigned char *input, size_t ilen,
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unsigned char *output, size_t *olen, size_t osize,
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int (*f_rng)(void *, unsigned char *, size_t), void *p_rng )
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{
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mbedtls_rsa_context * rsa = (mbedtls_rsa_context *) ctx;
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if( ilen != mbedtls_rsa_get_len( rsa ) )
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return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
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return( mbedtls_rsa_pkcs1_decrypt( rsa, f_rng, p_rng,
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MBEDTLS_RSA_PRIVATE, olen, input, output, osize ) );
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}
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static int rsa_encrypt_wrap( void *ctx,
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const unsigned char *input, size_t ilen,
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unsigned char *output, size_t *olen, size_t osize,
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int (*f_rng)(void *, unsigned char *, size_t), void *p_rng )
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{
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mbedtls_rsa_context * rsa = (mbedtls_rsa_context *) ctx;
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*olen = mbedtls_rsa_get_len( rsa );
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if( *olen > osize )
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return( MBEDTLS_ERR_RSA_OUTPUT_TOO_LARGE );
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return( mbedtls_rsa_pkcs1_encrypt( rsa, f_rng, p_rng, MBEDTLS_RSA_PUBLIC,
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ilen, input, output ) );
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}
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static int rsa_check_pair_wrap( const void *pub, const void *prv )
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{
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return( mbedtls_rsa_check_pub_priv( (const mbedtls_rsa_context *) pub,
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(const mbedtls_rsa_context *) prv ) );
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}
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static void *rsa_alloc_wrap( void )
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{
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void *ctx = mbedtls_calloc( 1, sizeof( mbedtls_rsa_context ) );
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if( ctx != NULL )
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mbedtls_rsa_init( (mbedtls_rsa_context *) ctx, 0, 0 );
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return( ctx );
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}
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static void rsa_free_wrap( void *ctx )
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{
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mbedtls_rsa_free( (mbedtls_rsa_context *) ctx );
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mbedtls_free( ctx );
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}
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static void rsa_debug( const void *ctx, mbedtls_pk_debug_item *items )
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{
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items->type = MBEDTLS_PK_DEBUG_MPI;
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items->name = "rsa.N";
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items->value = &( ((mbedtls_rsa_context *) ctx)->N );
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items++;
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items->type = MBEDTLS_PK_DEBUG_MPI;
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items->name = "rsa.E";
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items->value = &( ((mbedtls_rsa_context *) ctx)->E );
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}
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const mbedtls_pk_info_t mbedtls_rsa_info = {
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MBEDTLS_PK_RSA,
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"RSA",
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rsa_get_bitlen,
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rsa_can_do,
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rsa_verify_wrap,
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rsa_sign_wrap,
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#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE)
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NULL,
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NULL,
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#endif
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rsa_decrypt_wrap,
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rsa_encrypt_wrap,
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rsa_check_pair_wrap,
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rsa_alloc_wrap,
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rsa_free_wrap,
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#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE)
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NULL,
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NULL,
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#endif
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rsa_debug,
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};
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#endif /* MBEDTLS_RSA_C */
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#if defined(MBEDTLS_ECP_C)
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/*
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* Generic EC key
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*/
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static int eckey_can_do( mbedtls_pk_type_t type )
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{
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return( type == MBEDTLS_PK_ECKEY ||
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type == MBEDTLS_PK_ECKEY_DH ||
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type == MBEDTLS_PK_ECDSA );
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}
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static size_t eckey_get_bitlen( const void *ctx )
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{
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return( ((mbedtls_ecp_keypair *) ctx)->grp.pbits );
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}
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#if defined(MBEDTLS_ECDSA_C)
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/* Forward declarations */
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static int ecdsa_verify_wrap( void *ctx, mbedtls_md_type_t md_alg,
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const unsigned char *hash, size_t hash_len,
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const unsigned char *sig, size_t sig_len );
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static int ecdsa_sign_wrap( void *ctx, mbedtls_md_type_t md_alg,
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const unsigned char *hash, size_t hash_len,
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unsigned char *sig, size_t *sig_len,
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int (*f_rng)(void *, unsigned char *, size_t), void *p_rng );
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static int eckey_verify_wrap( void *ctx, mbedtls_md_type_t md_alg,
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const unsigned char *hash, size_t hash_len,
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const unsigned char *sig, size_t sig_len )
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{
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int ret;
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mbedtls_ecdsa_context ecdsa;
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mbedtls_ecdsa_init( &ecdsa );
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if( ( ret = mbedtls_ecdsa_from_keypair( &ecdsa, ctx ) ) == 0 )
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ret = ecdsa_verify_wrap( &ecdsa, md_alg, hash, hash_len, sig, sig_len );
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mbedtls_ecdsa_free( &ecdsa );
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return( ret );
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}
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static int eckey_sign_wrap( void *ctx, mbedtls_md_type_t md_alg,
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const unsigned char *hash, size_t hash_len,
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unsigned char *sig, size_t *sig_len,
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int (*f_rng)(void *, unsigned char *, size_t), void *p_rng )
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{
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int ret;
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mbedtls_ecdsa_context ecdsa;
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mbedtls_ecdsa_init( &ecdsa );
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if( ( ret = mbedtls_ecdsa_from_keypair( &ecdsa, ctx ) ) == 0 )
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ret = ecdsa_sign_wrap( &ecdsa, md_alg, hash, hash_len, sig, sig_len,
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f_rng, p_rng );
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mbedtls_ecdsa_free( &ecdsa );
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return( ret );
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}
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#if defined(MBEDTLS_ECP_RESTARTABLE)
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/* Forward declarations */
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static int ecdsa_verify_rs_wrap( void *ctx, mbedtls_md_type_t md_alg,
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const unsigned char *hash, size_t hash_len,
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const unsigned char *sig, size_t sig_len,
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void *rs_ctx );
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static int ecdsa_sign_rs_wrap( void *ctx, mbedtls_md_type_t md_alg,
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const unsigned char *hash, size_t hash_len,
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unsigned char *sig, size_t *sig_len,
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int (*f_rng)(void *, unsigned char *, size_t), void *p_rng,
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void *rs_ctx );
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/*
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* Restart context for ECDSA operations with ECKEY context
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*
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* We need to store an actual ECDSA context, as we need to pass the same to
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* the underlying ecdsa function, so we can't create it on the fly every time.
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*/
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typedef struct
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{
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mbedtls_ecdsa_restart_ctx ecdsa_rs;
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mbedtls_ecdsa_context ecdsa_ctx;
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} eckey_restart_ctx;
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static void *eckey_rs_alloc( void )
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{
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eckey_restart_ctx *rs_ctx;
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void *ctx = mbedtls_calloc( 1, sizeof( eckey_restart_ctx ) );
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if( ctx != NULL )
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{
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rs_ctx = ctx;
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mbedtls_ecdsa_restart_init( &rs_ctx->ecdsa_rs );
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mbedtls_ecdsa_init( &rs_ctx->ecdsa_ctx );
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}
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return( ctx );
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}
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static void eckey_rs_free( void *ctx )
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{
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eckey_restart_ctx *rs_ctx;
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if( ctx == NULL)
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return;
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rs_ctx = ctx;
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mbedtls_ecdsa_restart_free( &rs_ctx->ecdsa_rs );
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mbedtls_ecdsa_free( &rs_ctx->ecdsa_ctx );
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mbedtls_free( ctx );
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}
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static int eckey_verify_rs_wrap( void *ctx, mbedtls_md_type_t md_alg,
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const unsigned char *hash, size_t hash_len,
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const unsigned char *sig, size_t sig_len,
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void *rs_ctx )
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{
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int ret;
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eckey_restart_ctx *rs = rs_ctx;
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/* Should never happen */
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if( rs == NULL )
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return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
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/* set up our own sub-context if needed */
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if( rs->ecdsa_ctx.grp.pbits == 0 )
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MBEDTLS_MPI_CHK( mbedtls_ecdsa_from_keypair( &rs->ecdsa_ctx, ctx ) );
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MBEDTLS_MPI_CHK( ecdsa_verify_rs_wrap( &rs->ecdsa_ctx,
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md_alg, hash, hash_len,
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sig, sig_len, &rs->ecdsa_rs ) );
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cleanup:
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return( ret );
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}
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static int eckey_sign_rs_wrap( void *ctx, mbedtls_md_type_t md_alg,
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const unsigned char *hash, size_t hash_len,
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unsigned char *sig, size_t *sig_len,
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int (*f_rng)(void *, unsigned char *, size_t), void *p_rng,
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void *rs_ctx )
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{
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int ret;
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eckey_restart_ctx *rs = rs_ctx;
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/* Should never happen */
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if( rs == NULL )
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return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
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/* set up our own sub-context if needed */
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if( rs->ecdsa_ctx.grp.pbits == 0 )
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MBEDTLS_MPI_CHK( mbedtls_ecdsa_from_keypair( &rs->ecdsa_ctx, ctx ) );
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MBEDTLS_MPI_CHK( ecdsa_sign_rs_wrap( &rs->ecdsa_ctx, md_alg,
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hash, hash_len, sig, sig_len,
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f_rng, p_rng, &rs->ecdsa_rs ) );
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cleanup:
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return( ret );
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}
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#endif /* MBEDTLS_ECP_RESTARTABLE */
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#endif /* MBEDTLS_ECDSA_C */
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static int eckey_check_pair( const void *pub, const void *prv )
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{
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return( mbedtls_ecp_check_pub_priv( (const mbedtls_ecp_keypair *) pub,
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(const mbedtls_ecp_keypair *) prv ) );
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}
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static void *eckey_alloc_wrap( void )
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{
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void *ctx = mbedtls_calloc( 1, sizeof( mbedtls_ecp_keypair ) );
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if( ctx != NULL )
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mbedtls_ecp_keypair_init( ctx );
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return( ctx );
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}
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static void eckey_free_wrap( void *ctx )
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{
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mbedtls_ecp_keypair_free( (mbedtls_ecp_keypair *) ctx );
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mbedtls_free( ctx );
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}
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static void eckey_debug( const void *ctx, mbedtls_pk_debug_item *items )
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{
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items->type = MBEDTLS_PK_DEBUG_ECP;
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items->name = "eckey.Q";
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items->value = &( ((mbedtls_ecp_keypair *) ctx)->Q );
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}
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const mbedtls_pk_info_t mbedtls_eckey_info = {
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MBEDTLS_PK_ECKEY,
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"EC",
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eckey_get_bitlen,
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eckey_can_do,
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#if defined(MBEDTLS_ECDSA_C)
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eckey_verify_wrap,
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eckey_sign_wrap,
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#if defined(MBEDTLS_ECP_RESTARTABLE)
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eckey_verify_rs_wrap,
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eckey_sign_rs_wrap,
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#endif
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#else /* MBEDTLS_ECDSA_C */
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NULL,
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NULL,
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#endif /* MBEDTLS_ECDSA_C */
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NULL,
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NULL,
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eckey_check_pair,
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eckey_alloc_wrap,
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eckey_free_wrap,
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#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE)
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eckey_rs_alloc,
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eckey_rs_free,
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#endif
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eckey_debug,
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};
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/*
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* EC key restricted to ECDH
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*/
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static int eckeydh_can_do( mbedtls_pk_type_t type )
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{
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return( type == MBEDTLS_PK_ECKEY ||
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type == MBEDTLS_PK_ECKEY_DH );
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}
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const mbedtls_pk_info_t mbedtls_eckeydh_info = {
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|
MBEDTLS_PK_ECKEY_DH,
|
|
"EC_DH",
|
|
eckey_get_bitlen, /* Same underlying key structure */
|
|
eckeydh_can_do,
|
|
NULL,
|
|
NULL,
|
|
#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE)
|
|
NULL,
|
|
NULL,
|
|
#endif
|
|
NULL,
|
|
NULL,
|
|
eckey_check_pair,
|
|
eckey_alloc_wrap, /* Same underlying key structure */
|
|
eckey_free_wrap, /* Same underlying key structure */
|
|
#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE)
|
|
NULL,
|
|
NULL,
|
|
#endif
|
|
eckey_debug, /* Same underlying key structure */
|
|
};
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|
#endif /* MBEDTLS_ECP_C */
|
|
|
|
#if defined(MBEDTLS_ECDSA_C)
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|
static int ecdsa_can_do( mbedtls_pk_type_t type )
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|
{
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|
return( type == MBEDTLS_PK_ECDSA );
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|
}
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|
|
|
static int ecdsa_verify_wrap( void *ctx, mbedtls_md_type_t md_alg,
|
|
const unsigned char *hash, size_t hash_len,
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|
const unsigned char *sig, size_t sig_len )
|
|
{
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|
int ret;
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|
((void) md_alg);
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|
|
|
ret = mbedtls_ecdsa_read_signature( (mbedtls_ecdsa_context *) ctx,
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|
hash, hash_len, sig, sig_len );
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|
|
|
if( ret == MBEDTLS_ERR_ECP_SIG_LEN_MISMATCH )
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|
return( MBEDTLS_ERR_PK_SIG_LEN_MISMATCH );
|
|
|
|
return( ret );
|
|
}
|
|
|
|
static int ecdsa_sign_wrap( void *ctx, mbedtls_md_type_t md_alg,
|
|
const unsigned char *hash, size_t hash_len,
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|
unsigned char *sig, size_t *sig_len,
|
|
int (*f_rng)(void *, unsigned char *, size_t), void *p_rng )
|
|
{
|
|
return( mbedtls_ecdsa_write_signature( (mbedtls_ecdsa_context *) ctx,
|
|
md_alg, hash, hash_len, sig, sig_len, f_rng, p_rng ) );
|
|
}
|
|
|
|
#if defined(MBEDTLS_ECP_RESTARTABLE)
|
|
static int ecdsa_verify_rs_wrap( void *ctx, mbedtls_md_type_t md_alg,
|
|
const unsigned char *hash, size_t hash_len,
|
|
const unsigned char *sig, size_t sig_len,
|
|
void *rs_ctx )
|
|
{
|
|
int ret;
|
|
((void) md_alg);
|
|
|
|
ret = mbedtls_ecdsa_read_signature_restartable(
|
|
(mbedtls_ecdsa_context *) ctx,
|
|
hash, hash_len, sig, sig_len,
|
|
(mbedtls_ecdsa_restart_ctx *) rs_ctx );
|
|
|
|
if( ret == MBEDTLS_ERR_ECP_SIG_LEN_MISMATCH )
|
|
return( MBEDTLS_ERR_PK_SIG_LEN_MISMATCH );
|
|
|
|
return( ret );
|
|
}
|
|
|
|
static int ecdsa_sign_rs_wrap( void *ctx, mbedtls_md_type_t md_alg,
|
|
const unsigned char *hash, size_t hash_len,
|
|
unsigned char *sig, size_t *sig_len,
|
|
int (*f_rng)(void *, unsigned char *, size_t), void *p_rng,
|
|
void *rs_ctx )
|
|
{
|
|
return( mbedtls_ecdsa_write_signature_restartable(
|
|
(mbedtls_ecdsa_context *) ctx,
|
|
md_alg, hash, hash_len, sig, sig_len, f_rng, p_rng,
|
|
(mbedtls_ecdsa_restart_ctx *) rs_ctx ) );
|
|
|
|
}
|
|
#endif /* MBEDTLS_ECP_RESTARTABLE */
|
|
|
|
static void *ecdsa_alloc_wrap( void )
|
|
{
|
|
void *ctx = mbedtls_calloc( 1, sizeof( mbedtls_ecdsa_context ) );
|
|
|
|
if( ctx != NULL )
|
|
mbedtls_ecdsa_init( (mbedtls_ecdsa_context *) ctx );
|
|
|
|
return( ctx );
|
|
}
|
|
|
|
static void ecdsa_free_wrap( void *ctx )
|
|
{
|
|
mbedtls_ecdsa_free( (mbedtls_ecdsa_context *) ctx );
|
|
mbedtls_free( ctx );
|
|
}
|
|
|
|
#if defined(MBEDTLS_ECP_RESTARTABLE)
|
|
static void *ecdsa_rs_alloc( void )
|
|
{
|
|
void *ctx = mbedtls_calloc( 1, sizeof( mbedtls_ecdsa_restart_ctx ) );
|
|
|
|
if( ctx != NULL )
|
|
mbedtls_ecdsa_restart_init( ctx );
|
|
|
|
return( ctx );
|
|
}
|
|
|
|
static void ecdsa_rs_free( void *ctx )
|
|
{
|
|
mbedtls_ecdsa_restart_free( ctx );
|
|
mbedtls_free( ctx );
|
|
}
|
|
#endif /* MBEDTLS_ECP_RESTARTABLE */
|
|
|
|
const mbedtls_pk_info_t mbedtls_ecdsa_info = {
|
|
MBEDTLS_PK_ECDSA,
|
|
"ECDSA",
|
|
eckey_get_bitlen, /* Compatible key structures */
|
|
ecdsa_can_do,
|
|
ecdsa_verify_wrap,
|
|
ecdsa_sign_wrap,
|
|
#if defined(MBEDTLS_ECP_RESTARTABLE)
|
|
ecdsa_verify_rs_wrap,
|
|
ecdsa_sign_rs_wrap,
|
|
#endif
|
|
NULL,
|
|
NULL,
|
|
eckey_check_pair, /* Compatible key structures */
|
|
ecdsa_alloc_wrap,
|
|
ecdsa_free_wrap,
|
|
#if defined(MBEDTLS_ECP_RESTARTABLE)
|
|
ecdsa_rs_alloc,
|
|
ecdsa_rs_free,
|
|
#endif
|
|
eckey_debug, /* Compatible key structures */
|
|
};
|
|
#endif /* MBEDTLS_ECDSA_C */
|
|
|
|
#if defined(MBEDTLS_PK_RSA_ALT_SUPPORT)
|
|
/*
|
|
* Support for alternative RSA-private implementations
|
|
*/
|
|
|
|
static int rsa_alt_can_do( mbedtls_pk_type_t type )
|
|
{
|
|
return( type == MBEDTLS_PK_RSA );
|
|
}
|
|
|
|
static size_t rsa_alt_get_bitlen( const void *ctx )
|
|
{
|
|
const mbedtls_rsa_alt_context *rsa_alt = (const mbedtls_rsa_alt_context *) ctx;
|
|
|
|
return( 8 * rsa_alt->key_len_func( rsa_alt->key ) );
|
|
}
|
|
|
|
static int rsa_alt_sign_wrap( void *ctx, mbedtls_md_type_t md_alg,
|
|
const unsigned char *hash, size_t hash_len,
|
|
unsigned char *sig, size_t *sig_len,
|
|
int (*f_rng)(void *, unsigned char *, size_t), void *p_rng )
|
|
{
|
|
mbedtls_rsa_alt_context *rsa_alt = (mbedtls_rsa_alt_context *) ctx;
|
|
|
|
#if SIZE_MAX > UINT_MAX
|
|
if( UINT_MAX < hash_len )
|
|
return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
|
|
#endif /* SIZE_MAX > UINT_MAX */
|
|
|
|
*sig_len = rsa_alt->key_len_func( rsa_alt->key );
|
|
|
|
return( rsa_alt->sign_func( rsa_alt->key, f_rng, p_rng, MBEDTLS_RSA_PRIVATE,
|
|
md_alg, (unsigned int) hash_len, hash, sig ) );
|
|
}
|
|
|
|
static int rsa_alt_decrypt_wrap( void *ctx,
|
|
const unsigned char *input, size_t ilen,
|
|
unsigned char *output, size_t *olen, size_t osize,
|
|
int (*f_rng)(void *, unsigned char *, size_t), void *p_rng )
|
|
{
|
|
mbedtls_rsa_alt_context *rsa_alt = (mbedtls_rsa_alt_context *) ctx;
|
|
|
|
((void) f_rng);
|
|
((void) p_rng);
|
|
|
|
if( ilen != rsa_alt->key_len_func( rsa_alt->key ) )
|
|
return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
|
|
|
|
return( rsa_alt->decrypt_func( rsa_alt->key,
|
|
MBEDTLS_RSA_PRIVATE, olen, input, output, osize ) );
|
|
}
|
|
|
|
#if defined(MBEDTLS_RSA_C)
|
|
static int rsa_alt_check_pair( const void *pub, const void *prv )
|
|
{
|
|
unsigned char sig[MBEDTLS_MPI_MAX_SIZE];
|
|
unsigned char hash[32];
|
|
size_t sig_len = 0;
|
|
int ret;
|
|
|
|
if( rsa_alt_get_bitlen( prv ) != rsa_get_bitlen( pub ) )
|
|
return( MBEDTLS_ERR_RSA_KEY_CHECK_FAILED );
|
|
|
|
memset( hash, 0x2a, sizeof( hash ) );
|
|
|
|
if( ( ret = rsa_alt_sign_wrap( (void *) prv, MBEDTLS_MD_NONE,
|
|
hash, sizeof( hash ),
|
|
sig, &sig_len, NULL, NULL ) ) != 0 )
|
|
{
|
|
return( ret );
|
|
}
|
|
|
|
if( rsa_verify_wrap( (void *) pub, MBEDTLS_MD_NONE,
|
|
hash, sizeof( hash ), sig, sig_len ) != 0 )
|
|
{
|
|
return( MBEDTLS_ERR_RSA_KEY_CHECK_FAILED );
|
|
}
|
|
|
|
return( 0 );
|
|
}
|
|
#endif /* MBEDTLS_RSA_C */
|
|
|
|
static void *rsa_alt_alloc_wrap( void )
|
|
{
|
|
void *ctx = mbedtls_calloc( 1, sizeof( mbedtls_rsa_alt_context ) );
|
|
|
|
if( ctx != NULL )
|
|
memset( ctx, 0, sizeof( mbedtls_rsa_alt_context ) );
|
|
|
|
return( ctx );
|
|
}
|
|
|
|
static void rsa_alt_free_wrap( void *ctx )
|
|
{
|
|
mbedtls_platform_zeroize( ctx, sizeof( mbedtls_rsa_alt_context ) );
|
|
mbedtls_free( ctx );
|
|
}
|
|
|
|
const mbedtls_pk_info_t mbedtls_rsa_alt_info = {
|
|
MBEDTLS_PK_RSA_ALT,
|
|
"RSA-alt",
|
|
rsa_alt_get_bitlen,
|
|
rsa_alt_can_do,
|
|
NULL,
|
|
rsa_alt_sign_wrap,
|
|
#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE)
|
|
NULL,
|
|
NULL,
|
|
#endif
|
|
rsa_alt_decrypt_wrap,
|
|
NULL,
|
|
#if defined(MBEDTLS_RSA_C)
|
|
rsa_alt_check_pair,
|
|
#else
|
|
NULL,
|
|
#endif
|
|
rsa_alt_alloc_wrap,
|
|
rsa_alt_free_wrap,
|
|
#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE)
|
|
NULL,
|
|
NULL,
|
|
#endif
|
|
NULL,
|
|
};
|
|
|
|
#endif /* MBEDTLS_PK_RSA_ALT_SUPPORT */
|
|
|
|
#endif /* MBEDTLS_PK_C */
|