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Adapt pkparse.c to new RSA interface

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This commit is contained in:
Hanno Becker 2017-08-22 14:33:21 +01:00
parent 6a1e7e5f4c
commit d58c5b2d16
1 changed files with 94 additions and 29 deletions
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123
library/pkparse.c
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@ -520,19 +520,33 @@ static int pk_get_rsapubkey( unsigned char **p,
return( MBEDTLS_ERR_PK_INVALID_PUBKEY +
MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
if( ( ret = mbedtls_asn1_get_mpi( p, end, &rsa->N ) ) != 0 ||
( ret = mbedtls_asn1_get_mpi( p, end, &rsa->E ) ) != 0 )
/* Import N */
if( ( ret = mbedtls_asn1_get_tag( p, end, &len, MBEDTLS_ASN1_INTEGER ) ) != 0 )
return( MBEDTLS_ERR_PK_INVALID_PUBKEY + ret );
if( ( ret = mbedtls_rsa_import_raw( rsa, *p, len, NULL, 0, NULL, 0,
NULL, 0, NULL, 0 ) ) != 0 )
return( MBEDTLS_ERR_PK_INVALID_PUBKEY );
*p += len;
/* Import E */
if( ( ret = mbedtls_asn1_get_tag( p, end, &len, MBEDTLS_ASN1_INTEGER ) ) != 0 )
return( MBEDTLS_ERR_PK_INVALID_PUBKEY + ret );
if( ( ret = mbedtls_rsa_import_raw( rsa, NULL, 0, NULL, 0, NULL, 0,
NULL, 0, *p, len ) ) != 0 )
return( MBEDTLS_ERR_PK_INVALID_PUBKEY );
*p += len;
if( ( ret = mbedtls_rsa_complete( rsa, NULL, NULL ) ) != 0 )
return( MBEDTLS_ERR_PK_INVALID_PUBKEY );
if( *p != end )
return( MBEDTLS_ERR_PK_INVALID_PUBKEY +
MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
if( ( ret = mbedtls_rsa_check_pubkey( rsa ) ) != 0 )
return( MBEDTLS_ERR_PK_INVALID_PUBKEY );
rsa->len = mbedtls_mpi_size( &rsa->N );
return( 0 );
}
#endif /* MBEDTLS_RSA_C */
@ -643,10 +657,16 @@ static int pk_parse_key_pkcs1_der( mbedtls_rsa_context *rsa,
const unsigned char *key,
size_t keylen )
{
int ret;
int ret, version;
size_t len;
unsigned char *p, *end;
mbedtls_mpi DP, DQ, QP;
mbedtls_mpi_init( &DP );
mbedtls_mpi_init( &DQ );
mbedtls_mpi_init( &QP );
p = (unsigned char *) key;
end = p + keylen;
@ -674,45 +694,90 @@ static int pk_parse_key_pkcs1_der( mbedtls_rsa_context *rsa,
end = p + len;
if( ( ret = mbedtls_asn1_get_int( &p, end, &rsa->ver ) ) != 0 )
if( ( ret = mbedtls_asn1_get_int( &p, end, &version ) ) != 0 )
{
return( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT + ret );
}
if( rsa->ver != 0 )
if( version != 0 )
{
return( MBEDTLS_ERR_PK_KEY_INVALID_VERSION );
}
if( ( ret = mbedtls_asn1_get_mpi( &p, end, &rsa->N ) ) != 0 ||
( ret = mbedtls_asn1_get_mpi( &p, end, &rsa->E ) ) != 0 ||
( ret = mbedtls_asn1_get_mpi( &p, end, &rsa->D ) ) != 0 ||
( ret = mbedtls_asn1_get_mpi( &p, end, &rsa->P ) ) != 0 ||
( ret = mbedtls_asn1_get_mpi( &p, end, &rsa->Q ) ) != 0 ||
( ret = mbedtls_asn1_get_mpi( &p, end, &rsa->DP ) ) != 0 ||
( ret = mbedtls_asn1_get_mpi( &p, end, &rsa->DQ ) ) != 0 ||
( ret = mbedtls_asn1_get_mpi( &p, end, &rsa->QP ) ) != 0 )
{
mbedtls_rsa_free( rsa );
return( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT + ret );
}
/* Import N */
if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
MBEDTLS_ASN1_INTEGER ) ) != 0 ||
( ret = mbedtls_rsa_import_raw( rsa, p, len, NULL, 0, NULL, 0,
NULL, 0, NULL, 0 ) ) != 0 )
goto cleanup;
p += len;
rsa->len = mbedtls_mpi_size( &rsa->N );
/* Import E */
if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
MBEDTLS_ASN1_INTEGER ) ) != 0 ||
( ret = mbedtls_rsa_import_raw( rsa, NULL, 0, NULL, 0, NULL, 0,
NULL, 0, p, len ) ) != 0 )
goto cleanup;
p += len;
/* Import D */
if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
MBEDTLS_ASN1_INTEGER ) ) != 0 ||
( ret = mbedtls_rsa_import_raw( rsa, NULL, 0, NULL, 0, NULL, 0,
p, len, NULL, 0 ) ) != 0 )
goto cleanup;
p += len;
/* Import P */
if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
MBEDTLS_ASN1_INTEGER ) ) != 0 ||
( ret = mbedtls_rsa_import_raw( rsa, NULL, 0, p, len, NULL, 0,
NULL, 0, NULL, 0 ) ) != 0 )
goto cleanup;
p += len;
/* Import Q */
if( ( ret = mbedtls_asn1_get_tag( &p, end, &len,
MBEDTLS_ASN1_INTEGER ) ) != 0 ||
( ret = mbedtls_rsa_import_raw( rsa, NULL, 0, NULL, 0, p, len,
NULL, 0, NULL, 0 ) ) != 0 )
goto cleanup;
p += len;
/* Complete the RSA private key */
if( ( ret = mbedtls_rsa_complete( rsa, NULL, NULL ) ) != 0 )
goto cleanup;
/* Check optional parameters */
if( ( ret = mbedtls_asn1_get_mpi( &p, end, &DP ) ) != 0 ||
( ret = mbedtls_asn1_get_mpi( &p, end, &DQ ) ) != 0 ||
( ret = mbedtls_asn1_get_mpi( &p, end, &QP ) ) != 0 ||
( ret = mbedtls_rsa_check_crt( rsa, &DP, &DQ, &QP ) ) != 0 )
goto cleanup;
if( p != end )
{
mbedtls_rsa_free( rsa );
return( MBEDTLS_ERR_PK_KEY_INVALID_FORMAT +
MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
ret = MBEDTLS_ERR_PK_KEY_INVALID_FORMAT +
MBEDTLS_ERR_ASN1_LENGTH_MISMATCH ;
}
if( ( ret = mbedtls_rsa_check_privkey( rsa ) ) != 0 )
cleanup:
mbedtls_mpi_free( &DP );
mbedtls_mpi_free( &DQ );
mbedtls_mpi_free( &QP );
if( ret != 0 )
{
if( ( ret & 0xff80 ) == 0 )
ret = MBEDTLS_ERR_PK_KEY_INVALID_FORMAT + ret;
else
ret = MBEDTLS_ERR_PK_KEY_INVALID_FORMAT;
mbedtls_rsa_free( rsa );
return( ret );
}
return( 0 );
return( ret );
}
#endif /* MBEDTLS_RSA_C */