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- #include <stdint.h>
- #include <stdlib.h>
- #include "mbedtls/pk.h"
- int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
- #ifdef MBEDTLS_PK_PARSE_C
- int ret;
- mbedtls_pk_context pk;
- mbedtls_pk_init( &pk );
- ret = mbedtls_pk_parse_public_key( &pk, Data, Size );
- if (ret == 0) {
- #if defined(MBEDTLS_RSA_C)
- if( mbedtls_pk_get_type( &pk ) == MBEDTLS_PK_RSA )
- {
- mbedtls_mpi N, P, Q, D, E, DP, DQ, QP;
- mbedtls_rsa_context *rsa;
- mbedtls_mpi_init( &N ); mbedtls_mpi_init( &P ); mbedtls_mpi_init( &Q );
- mbedtls_mpi_init( &D ); mbedtls_mpi_init( &E ); mbedtls_mpi_init( &DP );
- mbedtls_mpi_init( &DQ ); mbedtls_mpi_init( &QP );
- rsa = mbedtls_pk_rsa( pk );
- if ( mbedtls_rsa_export( rsa, &N, NULL, NULL, NULL, &E ) != 0 ) {
- abort();
- }
- if ( mbedtls_rsa_export( rsa, &N, &P, &Q, &D, &E ) != MBEDTLS_ERR_RSA_BAD_INPUT_DATA ) {
- abort();
- }
- if ( mbedtls_rsa_export_crt( rsa, &DP, &DQ, &QP ) != MBEDTLS_ERR_RSA_BAD_INPUT_DATA ) {
- abort();
- }
- mbedtls_mpi_free( &N ); mbedtls_mpi_free( &P ); mbedtls_mpi_free( &Q );
- mbedtls_mpi_free( &D ); mbedtls_mpi_free( &E ); mbedtls_mpi_free( &DP );
- mbedtls_mpi_free( &DQ ); mbedtls_mpi_free( &QP );
- }
- else
- #endif
- #if defined(MBEDTLS_ECP_C)
- if( mbedtls_pk_get_type( &pk ) == MBEDTLS_PK_ECKEY ||
- mbedtls_pk_get_type( &pk ) == MBEDTLS_PK_ECKEY_DH )
- {
- mbedtls_ecp_keypair *ecp = mbedtls_pk_ec( pk );
- mbedtls_ecp_group_id grp_id = ecp->grp.id;
- const mbedtls_ecp_curve_info *curve_info =
- mbedtls_ecp_curve_info_from_grp_id( grp_id );
- /* If the curve is not supported, the key should not have been
- * accepted. */
- if( curve_info == NULL )
- abort( );
- /* It's a public key, so the private value should not have
- * been changed from its initialization to 0. */
- if( mbedtls_mpi_cmp_int( &ecp->d, 0 ) != 0 )
- abort( );
- }
- else
- #endif
- {
- /* The key is valid but is not of a supported type.
- * This should not happen. */
- abort( );
- }
- }
- mbedtls_pk_free( &pk );
- #else
- (void) Data;
- (void) Size;
- #endif //MBEDTLS_PK_PARSE_C
- return 0;
- }
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