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Verify sign wrapper functionality for uECC

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This commit is contained in:
Jarno Lamsa 2019-04-16 16:48:22 +03:00 • committed by Hanno Becker
parent e1c5608370
commit 42b83db1eb
4 changed files with 287 additions and 0 deletions
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51
library/pkparse.c
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@ -52,6 +52,9 @@
#if defined(MBEDTLS_PKCS12_C)
#include "mbedtls/pkcs12.h"
#endif
#if defined(MBEDTLS_USE_TINYCRYPT)
#include "mbedtls/ecc.h"
#endif
#if defined(MBEDTLS_PLATFORM_C)
#include "mbedtls/platform.h"
@ -517,6 +520,48 @@ static int pk_get_ecpubkey( unsigned char **p, const unsigned char *end,
}
#endif /* MBEDTLS_ECP_C */
#if defined(MBEDTLS_USE_TINYCRYPT)
/*
* Import a point from unsigned binary data (SEC1 2.3.4)
*/
static int uecc_public_key_read_binary( uint8_t **pt,
const unsigned char *buf, size_t ilen )
{
if( ilen < 1 )
return( MBEDTLS_ERR_PK_INVALID_PUBKEY );
//We are not handling the infinity point right now
if( buf[0] != 0x04 )
return( MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE );
if( ilen != 2 * NUM_ECC_BYTES + 1 )
return( MBEDTLS_ERR_PK_INVALID_PUBKEY );
*pt = (uint8_t *) buf + 1;
return( 0 );
}
static int pk_get_ueccpubkey( unsigned char **p,
const unsigned char *end,
uint8_t *pk_context)
{
int ret;
ret = uecc_public_key_read_binary( &pk_context,
(const unsigned char *) *p, end - *p );
/*
* We know uecc_public_key_read_binary consumed all bytes or failed
*/
*p = (unsigned char *) end;
return( ret );
}
#endif /* MBEDTLS_USE_TINYCRYPT */
#if defined(MBEDTLS_RSA_C)
/*
* RSAPublicKey ::= SEQUENCE {
@ -650,6 +695,12 @@ int mbedtls_pk_parse_subpubkey( unsigned char **p, const unsigned char *end,
if( ( ret = mbedtls_pk_setup( pk, pk_info ) ) != 0 )
return( ret );
#if defined(MBEDTLS_USE_TINYCRYPT)
if( pk_alg == MBEDTLS_PK_ECDSA )
{
ret = pk_get_ueccpubkey( p, end, (uint8_t*) pk->pk_ctx );
}
#endif /* MBEDTLS_USE_TINYCRYPT */
#if defined(MBEDTLS_RSA_C)
if( pk_alg == MBEDTLS_PK_RSA )
{