+++ /dev/null
-/*
- * Public Key abstraction layer: wrapper functions
- *
- * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
- * SPDX-License-Identifier: GPL-2.0
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * This file is part of mbed TLS (https://tls.mbed.org)
- */
-
-#if !defined(MBEDTLS_CONFIG_FILE)
-#include "mbedtls/config.h"
-#else
-#include MBEDTLS_CONFIG_FILE
-#endif
-
-#if defined(MBEDTLS_PK_C)
-#include "mbedtls/pk_internal.h"
-
-/* Even if RSA not activated, for the sake of RSA-alt */
-#include "mbedtls/rsa.h"
-#include "mbedtls/bignum.h"
-
-#include <string.h>
-
-#if defined(MBEDTLS_ECP_C)
-#include "mbedtls/ecp.h"
-#endif
-
-#if defined(MBEDTLS_ECDSA_C)
-#include "mbedtls/ecdsa.h"
-#endif
-
-#if defined(MBEDTLS_PLATFORM_C)
-#include "mbedtls/platform.h"
-#else
-#include <stdlib.h>
-#define mbedtls_calloc calloc
-#define mbedtls_free free
-#endif
-
-#include <limits.h>
-
-#if defined(MBEDTLS_PK_RSA_ALT_SUPPORT)
-/* Implementation that should never be optimized out by the compiler */
-static void mbedtls_zeroize( void *v, size_t n ) {
- volatile unsigned char *p = v; while( n-- ) *p++ = 0;
-}
-#endif
-
-#if defined(MBEDTLS_RSA_C)
-static int rsa_can_do( mbedtls_pk_type_t type )
-{
- return( type == MBEDTLS_PK_RSA ||
- type == MBEDTLS_PK_RSASSA_PSS );
-}
-
-static size_t rsa_get_bitlen( const void *ctx )
-{
- return( 8 * ((const mbedtls_rsa_context *) ctx)->len );
-}
-
-static int rsa_verify_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 )
-{
- int ret;
-
-#if defined(MBEDTLS_HAVE_INT64)
- if( md_alg == MBEDTLS_MD_NONE && UINT_MAX < hash_len )
- return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
-#endif /* MBEDTLS_HAVE_INT64 */
-
- if( sig_len < ((mbedtls_rsa_context *) ctx)->len )
- return( MBEDTLS_ERR_RSA_VERIFY_FAILED );
-
- if( ( ret = mbedtls_rsa_pkcs1_verify( (mbedtls_rsa_context *) ctx, NULL, NULL,
- MBEDTLS_RSA_PUBLIC, md_alg,
- (unsigned int) hash_len, hash, sig ) ) != 0 )
- return( ret );
-
- if( sig_len > ((mbedtls_rsa_context *) ctx)->len )
- return( MBEDTLS_ERR_PK_SIG_LEN_MISMATCH );
-
- return( 0 );
-}
-
-static int rsa_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 )
-{
-#if defined(MBEDTLS_HAVE_INT64)
- if( md_alg == MBEDTLS_MD_NONE && UINT_MAX < hash_len )
- return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
-#endif /* MBEDTLS_HAVE_INT64 */
-
- *sig_len = ((mbedtls_rsa_context *) ctx)->len;
-
- return( mbedtls_rsa_pkcs1_sign( (mbedtls_rsa_context *) ctx, f_rng, p_rng, MBEDTLS_RSA_PRIVATE,
- md_alg, (unsigned int) hash_len, hash, sig ) );
-}
-
-static int rsa_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 )
-{
- if( ilen != ((mbedtls_rsa_context *) ctx)->len )
- return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
-
- return( mbedtls_rsa_pkcs1_decrypt( (mbedtls_rsa_context *) ctx, f_rng, p_rng,
- MBEDTLS_RSA_PRIVATE, olen, input, output, osize ) );
-}
-
-static int rsa_encrypt_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 )
-{
- *olen = ((mbedtls_rsa_context *) ctx)->len;
-
- if( *olen > osize )
- return( MBEDTLS_ERR_RSA_OUTPUT_TOO_LARGE );
-
- return( mbedtls_rsa_pkcs1_encrypt( (mbedtls_rsa_context *) ctx,
- f_rng, p_rng, MBEDTLS_RSA_PUBLIC, ilen, input, output ) );
-}
-
-static int rsa_check_pair_wrap( const void *pub, const void *prv )
-{
- return( mbedtls_rsa_check_pub_priv( (const mbedtls_rsa_context *) pub,
- (const mbedtls_rsa_context *) prv ) );
-}
-
-static void *rsa_alloc_wrap( void )
-{
- void *ctx = mbedtls_calloc( 1, sizeof( mbedtls_rsa_context ) );
-
- if( ctx != NULL )
- mbedtls_rsa_init( (mbedtls_rsa_context *) ctx, 0, 0 );
-
- return( ctx );
-}
-
-static void rsa_free_wrap( void *ctx )
-{
- mbedtls_rsa_free( (mbedtls_rsa_context *) ctx );
- mbedtls_free( ctx );
-}
-
-static void rsa_debug( const void *ctx, mbedtls_pk_debug_item *items )
-{
- items->type = MBEDTLS_PK_DEBUG_MPI;
- items->name = "rsa.N";
- items->value = &( ((mbedtls_rsa_context *) ctx)->N );
-
- items++;
-
- items->type = MBEDTLS_PK_DEBUG_MPI;
- items->name = "rsa.E";
- items->value = &( ((mbedtls_rsa_context *) ctx)->E );
-}
-
-const mbedtls_pk_info_t mbedtls_rsa_info = {
- MBEDTLS_PK_RSA,
- "RSA",
- rsa_get_bitlen,
- rsa_can_do,
- rsa_verify_wrap,
- rsa_sign_wrap,
- rsa_decrypt_wrap,
- rsa_encrypt_wrap,
- rsa_check_pair_wrap,
- rsa_alloc_wrap,
- rsa_free_wrap,
- rsa_debug,
-};
-#endif /* MBEDTLS_RSA_C */
-
-#if defined(MBEDTLS_ECP_C)
-/*
- * Generic EC key
- */
-static int eckey_can_do( mbedtls_pk_type_t type )
-{
- return( type == MBEDTLS_PK_ECKEY ||
- type == MBEDTLS_PK_ECKEY_DH ||
- type == MBEDTLS_PK_ECDSA );
-}
-
-static size_t eckey_get_bitlen( const void *ctx )
-{
- return( ((mbedtls_ecp_keypair *) ctx)->grp.pbits );
-}
-
-#if defined(MBEDTLS_ECDSA_C)
-/* Forward declarations */
-static int ecdsa_verify_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 );
-
-static int ecdsa_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 );
-
-static int eckey_verify_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 )
-{
- int ret;
- mbedtls_ecdsa_context ecdsa;
-
- mbedtls_ecdsa_init( &ecdsa );
-
- if( ( ret = mbedtls_ecdsa_from_keypair( &ecdsa, ctx ) ) == 0 )
- ret = ecdsa_verify_wrap( &ecdsa, md_alg, hash, hash_len, sig, sig_len );
-
- mbedtls_ecdsa_free( &ecdsa );
-
- return( ret );
-}
-
-static int eckey_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 )
-{
- int ret;
- mbedtls_ecdsa_context ecdsa;
-
- mbedtls_ecdsa_init( &ecdsa );
-
- if( ( ret = mbedtls_ecdsa_from_keypair( &ecdsa, ctx ) ) == 0 )
- ret = ecdsa_sign_wrap( &ecdsa, md_alg, hash, hash_len, sig, sig_len,
- f_rng, p_rng );
-
- mbedtls_ecdsa_free( &ecdsa );
-
- return( ret );
-}
-
-#endif /* MBEDTLS_ECDSA_C */
-
-static int eckey_check_pair( const void *pub, const void *prv )
-{
- return( mbedtls_ecp_check_pub_priv( (const mbedtls_ecp_keypair *) pub,
- (const mbedtls_ecp_keypair *) prv ) );
-}
-
-static void *eckey_alloc_wrap( void )
-{
- void *ctx = mbedtls_calloc( 1, sizeof( mbedtls_ecp_keypair ) );
-
- if( ctx != NULL )
- mbedtls_ecp_keypair_init( ctx );
-
- return( ctx );
-}
-
-static void eckey_free_wrap( void *ctx )
-{
- mbedtls_ecp_keypair_free( (mbedtls_ecp_keypair *) ctx );
- mbedtls_free( ctx );
-}
-
-static void eckey_debug( const void *ctx, mbedtls_pk_debug_item *items )
-{
- items->type = MBEDTLS_PK_DEBUG_ECP;
- items->name = "eckey.Q";
- items->value = &( ((mbedtls_ecp_keypair *) ctx)->Q );
-}
-
-const mbedtls_pk_info_t mbedtls_eckey_info = {
- MBEDTLS_PK_ECKEY,
- "EC",
- eckey_get_bitlen,
- eckey_can_do,
-#if defined(MBEDTLS_ECDSA_C)
- eckey_verify_wrap,
- eckey_sign_wrap,
-#else
- NULL,
- NULL,
-#endif
- NULL,
- NULL,
- eckey_check_pair,
- eckey_alloc_wrap,
- eckey_free_wrap,
- eckey_debug,
-};
-
-/*
- * EC key restricted to ECDH
- */
-static int eckeydh_can_do( mbedtls_pk_type_t type )
-{
- return( type == MBEDTLS_PK_ECKEY ||
- type == MBEDTLS_PK_ECKEY_DH );
-}
-
-const mbedtls_pk_info_t mbedtls_eckeydh_info = {
- MBEDTLS_PK_ECKEY_DH,
- "EC_DH",
- eckey_get_bitlen, /* Same underlying key structure */
- eckeydh_can_do,
- NULL,
- NULL,
- NULL,
- NULL,
- eckey_check_pair,
- eckey_alloc_wrap, /* Same underlying key structure */
- eckey_free_wrap, /* Same underlying key structure */
- eckey_debug, /* Same underlying key structure */
-};
-#endif /* MBEDTLS_ECP_C */
-
-#if defined(MBEDTLS_ECDSA_C)
-static int ecdsa_can_do( mbedtls_pk_type_t type )
-{
- return( type == MBEDTLS_PK_ECDSA );
-}
-
-static int ecdsa_verify_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 )
-{
- int ret;
- ((void) md_alg);
-
- ret = mbedtls_ecdsa_read_signature( (mbedtls_ecdsa_context *) ctx,
- hash, hash_len, sig, sig_len );
-
- if( ret == MBEDTLS_ERR_ECP_SIG_LEN_MISMATCH )
- 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,
- 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 ) );
-}
-
-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 );
-}
-
-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,
- NULL,
- NULL,
- eckey_check_pair, /* Compatible key structures */
- ecdsa_alloc_wrap,
- ecdsa_free_wrap,
- 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 defined(MBEDTLS_HAVE_INT64)
- if( UINT_MAX < hash_len )
- return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
-#endif /* MBEDTLS_HAVE_INT64 */
-
- *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_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,
- 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,
- NULL,
-};
-
-#endif /* MBEDTLS_PK_RSA_ALT_SUPPORT */
-
-#endif /* MBEDTLS_PK_C */
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