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Rm dependency on MD in psa_crypto_rsa.c

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The previous commit made the PKCS#1v1.5 part of rsa.c independent from
md.c, but there was still a dependency in the corresponding part in PSA.
This commit removes it.

Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
This commit is contained in:
Manuel Pégourié-Gonnard 2022-07-05 11:30:31 +02:00
parent fe2b9b5397
commit 3f4778995e
3 changed files with 30 additions and 9 deletions
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32
library/psa_crypto_rsa.c
View file

@ -41,6 +41,7 @@
#include <mbedtls/error.h>
#include <mbedtls/pk.h>
#include "pk_wrap.h"
#include "md_internal.h"
#if defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PKCS1V15_CRYPT) || \
defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_OAEP) || \
@ -319,6 +320,30 @@ psa_status_t mbedtls_psa_rsa_generate_key(
#if defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PKCS1V15_SIGN) || \
defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PSS)
/* Convert a hash algorithm from PSA to MD identifier */
static inline mbedtls_md_type_t get_md_alg_from_psa( psa_algorithm_t psa_alg )
{
switch( psa_alg )
{
case PSA_ALG_MD5:
return( MBEDTLS_MD_MD5 );
case PSA_ALG_RIPEMD160:
return( MBEDTLS_MD_RIPEMD160 );
case PSA_ALG_SHA_1:
return( MBEDTLS_MD_SHA1 );
case PSA_ALG_SHA_224:
return( MBEDTLS_MD_SHA224 );
case PSA_ALG_SHA_256:
return( MBEDTLS_MD_SHA256 );
case PSA_ALG_SHA_384:
return( MBEDTLS_MD_SHA384 );
case PSA_ALG_SHA_512:
return( MBEDTLS_MD_SHA512 );
default:
return( MBEDTLS_MD_NONE );
}
}
/* Decode the hash algorithm from alg and store the mbedtls encoding in
* md_alg. Verify that the hash length is acceptable. */
static psa_status_t psa_rsa_decode_md_type( psa_algorithm_t alg,
@ -326,8 +351,7 @@ static psa_status_t psa_rsa_decode_md_type( psa_algorithm_t alg,
mbedtls_md_type_t *md_alg )
{
psa_algorithm_t hash_alg = PSA_ALG_SIGN_GET_HASH( alg );
const mbedtls_md_info_t *md_info = mbedtls_md_info_from_psa( hash_alg );
*md_alg = mbedtls_md_get_type( md_info );
*md_alg = get_md_alg_from_psa( hash_alg );
/* The Mbed TLS RSA module uses an unsigned int for hash length
* parameters. Validate that it fits so that we don't risk an
@ -340,9 +364,9 @@ static psa_status_t psa_rsa_decode_md_type( psa_algorithm_t alg,
/* For signatures using a hash, the hash length must be correct. */
if( alg != PSA_ALG_RSA_PKCS1V15_SIGN_RAW )
{
if( md_info == NULL )
if( *md_alg == MBEDTLS_MD_NONE )
return( PSA_ERROR_NOT_SUPPORTED );
if( mbedtls_md_get_size( md_info ) != hash_length )
if( mbedtls_md_internal_get_size( *md_alg ) != hash_length )
return( PSA_ERROR_INVALID_ARGUMENT );
}