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Add PSA-to-Mbed TLS translations for cipher module

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This commit is contained in:
Hanno Becker 2018-11-12 09:29:12 +00:00
parent 560aeaf26b
commit 28b9d35904
1 changed files with 72 additions and 1 deletions
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73
include/mbedtls/psa_util.h
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@ -41,6 +41,8 @@
#include "ecp.h"
#include "md.h"
/* Slot allocation */
static psa_status_t mbedtls_psa_get_free_key_slot( psa_key_slot_t *key )
{
for( psa_key_slot_t slot = 1; slot <= 32; slot++ )
@ -54,7 +56,74 @@ static psa_status_t mbedtls_psa_get_free_key_slot( psa_key_slot_t *key )
return( PSA_ERROR_INSUFFICIENT_MEMORY );
}
static psa_algorithm_t mbedtls_psa_translate_md( mbedtls_md_type_t md_alg )
/* Translations for symmetric crypto. */
static psa_key_type_t mbedtls_psa_translate_cipher_type(
mbedtls_cipher_type_t cipher )
{
switch( cipher )
{
case MBEDTLS_CIPHER_AES_128_CCM:
case MBEDTLS_CIPHER_AES_192_CCM:
case MBEDTLS_CIPHER_AES_256_CCM:
case MBEDTLS_CIPHER_AES_128_GCM:
case MBEDTLS_CIPHER_AES_192_GCM:
case MBEDTLS_CIPHER_AES_256_GCM:
case MBEDTLS_CIPHER_AES_128_CBC:
case MBEDTLS_CIPHER_AES_192_CBC:
case MBEDTLS_CIPHER_AES_256_CBC:
return( PSA_KEY_TYPE_AES );
/* ARIA not yet supported in PSA. */
/* case MBEDTLS_CIPHER_ARIA_128_CCM:
case MBEDTLS_CIPHER_ARIA_192_CCM:
case MBEDTLS_CIPHER_ARIA_256_CCM:
case MBEDTLS_CIPHER_ARIA_128_GCM:
case MBEDTLS_CIPHER_ARIA_192_GCM:
case MBEDTLS_CIPHER_ARIA_256_GCM:
case MBEDTLS_CIPHER_ARIA_128_CBC:
case MBEDTLS_CIPHER_ARIA_192_CBC:
case MBEDTLS_CIPHER_ARIA_256_CBC:
return( PSA_KEY_TYPE_ARIA ); */
default:
return( 0 );
}
}
static psa_algorithm_t mbedtls_psa_translate_cipher_mode(
mbedtls_cipher_mode_t mode )
{
switch( mode )
{
case MBEDTLS_MODE_GCM:
return( PSA_ALG_GCM );
case MBEDTLS_MODE_CCM:
return( PSA_ALG_CCM );
case MBEDTLS_MODE_CBC:
return( PSA_ALG_CBC_NO_PADDING );
default:
return( 0 );
}
}
static psa_key_usage_t mbedtls_psa_translate_cipher_operation(
mbedtls_cipher_operation_t op )
{
switch( op )
{
case MBEDTLS_ENCRYPT:
return( PSA_KEY_USAGE_ENCRYPT );
case MBEDTLS_DECRYPT:
return( PSA_KEY_USAGE_DECRYPT );
default:
return( 0 );
}
}
/* Translations for hashing. */
psa_algorithm_t mbedtls_psa_translate_md( mbedtls_md_type_t md_alg )
{
switch( md_alg )
{
@ -96,6 +165,8 @@ static psa_algorithm_t mbedtls_psa_translate_md( mbedtls_md_type_t md_alg )
}
}
/* Translations for ECC. */
static psa_ecc_curve_t mbedtls_psa_translate_ecc_group( mbedtls_ecp_group_id grpid )
{
switch( grpid )