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change order of parsing public key

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First parse PEM, and if fails, parse DER. Use some convention as
in parsing the private key (`mbedtls_pk_parse_key`)
This commit is contained in:
Ron Eldor 2017-10-16 19:30:00 +03:00
parent 84df1aeeaf
commit 40b14a894b
1 changed files with 26 additions and 21 deletions
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47
library/pkparse.c
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@ -1284,21 +1284,6 @@ int mbedtls_pk_parse_public_key( mbedtls_pk_context *ctx,
mbedtls_pem_free( &pem );
return( ret );
}
if( ( pk_info = mbedtls_pk_info_from_type( MBEDTLS_PK_RSA ) ) == NULL )
return( MBEDTLS_ERR_PK_UNKNOWN_PK_ALG );
if( ( ret = mbedtls_pk_setup( ctx, pk_info ) ) != 0 )
return( ret );
p = (unsigned char *) key;
ret = pk_get_rsapubkey( &p, p + keylen, mbedtls_pk_rsa( *ctx ) );
if ( ret == 0 )
{
mbedtls_pem_free( &pem );
return( ret );
}
mbedtls_pk_free( ctx );
#endif /* MBEDTLS_RSA_C */
/* Avoid calling mbedtls_pem_read_buffer() on non-null-terminated string */
@ -1315,8 +1300,11 @@ int mbedtls_pk_parse_public_key( mbedtls_pk_context *ctx,
/*
* Was PEM encoded
*/
key = pem.buf;
keylen = pem.buflen;
p = pem.buf;
ret = mbedtls_pk_parse_subpubkey( &p, p + pem.buflen, ctx );
mbedtls_pem_free( &pem );
return( ret );
}
else if( ret != MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT )
{
@ -1324,14 +1312,31 @@ int mbedtls_pk_parse_public_key( mbedtls_pk_context *ctx,
return( ret );
}
#endif /* MBEDTLS_PEM_PARSE_C */
#if defined(MBEDTLS_RSA_C)
if( ( pk_info = mbedtls_pk_info_from_type( MBEDTLS_PK_RSA ) ) == NULL )
return( MBEDTLS_ERR_PK_UNKNOWN_PK_ALG );
if( ( ret = mbedtls_pk_setup( ctx, pk_info ) ) != 0 )
return( ret );
p = (unsigned char *) key;
ret = pk_get_rsapubkey( &p, p + keylen, mbedtls_pk_rsa( *ctx ) );
if ( ret == 0 )
{
mbedtls_pem_free( &pem );
return( ret );
}
mbedtls_pk_free( ctx );
if ( ret != ( MBEDTLS_ERR_PK_INVALID_PUBKEY + MBEDTLS_ERR_ASN1_UNEXPECTED_TAG ) )
{
return ( ret );
}
#endif /* MBEDTLS_RSA_C */
p = (unsigned char *) key;
ret = mbedtls_pk_parse_subpubkey( &p, p + keylen, ctx );
#if defined(MBEDTLS_PEM_PARSE_C)
mbedtls_pem_free( &pem );
#endif
return( ret );
}