void show_available_digests() { const int *digests = mbedtls_md_list(); #ifndef ENABLE_SMALL printf("The following message digests are available for use with\n" PACKAGE_NAME ". A message digest is used in conjunction with\n" "the HMAC function, to authenticate received packets.\n" "You can specify a message digest as parameter to\n" "the --auth option.\n\n"); #endif while (*digests != 0) { const mbedtls_md_info_t *info = mbedtls_md_info_from_type(*digests); if (info) { printf("%s %d bit default key\n", mbedtls_md_get_name(info), mbedtls_md_get_size(info) * 8); } digests++; } printf("\n"); }
const char * md_kt_name(const mbedtls_md_info_t *kt) { if (NULL == kt) { return "[null-digest]"; } return mbedtls_md_get_name(kt); }
/* * Helper for writing signature algorithms */ int mbedtls_x509_sig_alg_gets( char *buf, size_t size, const mbedtls_x509_buf *sig_oid, mbedtls_pk_type_t pk_alg, mbedtls_md_type_t md_alg, const void *sig_opts ) { int ret; char *p = buf; size_t n = size; const char *desc = NULL; ret = mbedtls_oid_get_sig_alg_desc( sig_oid, &desc ); if( ret != 0 ) ret = mbedtls_snprintf( p, n, "???" ); else ret = mbedtls_snprintf( p, n, "%s", desc ); MBEDTLS_X509_SAFE_SNPRINTF; #if defined(MBEDTLS_X509_RSASSA_PSS_SUPPORT) if( pk_alg == MBEDTLS_PK_RSASSA_PSS ) { const mbedtls_pk_rsassa_pss_options *pss_opts; const mbedtls_md_info_t *md_info, *mgf_md_info; pss_opts = (const mbedtls_pk_rsassa_pss_options *) sig_opts; md_info = mbedtls_md_info_from_type( md_alg ); mgf_md_info = mbedtls_md_info_from_type( pss_opts->mgf1_hash_id ); ret = mbedtls_snprintf( p, n, " (%s, MGF1-%s, 0x%02X)", md_info ? mbedtls_md_get_name( md_info ) : "???", mgf_md_info ? mbedtls_md_get_name( mgf_md_info ) : "???", pss_opts->expected_salt_len ); MBEDTLS_X509_SAFE_SNPRINTF; } #else ((void) pk_alg); ((void) md_alg); ((void) sig_opts); #endif /* MBEDTLS_X509_RSASSA_PSS_SUPPORT */ return( (int)( size - n ) ); }