25  * (behaviour with NULL arguments) depending on whether MD_C is defined or
187             return NULL;  in mbedtls_md_info_from_type()
263     if (ctx == NULL || ctx->md_info == NULL) {  in mbedtls_md_free()
267     if (ctx->md_ctx != NULL) {  in mbedtls_md_free()
325     if (ctx->hmac_ctx != NULL) {  in mbedtls_md_free()
337     if (dst == NULL || dst->md_info == NULL ||  in mbedtls_md_clone()
338         src == NULL || src->md_info == NULL ||  in mbedtls_md_clone()
406     if (dst->hmac_ctx != NULL && src->hmac_ctx != NULL)  in mbedtls_md_clone()
415         if (ctx->md_ctx == NULL)                                       \
424     if (ctx == NULL) {  in mbedtls_md_setup()
428     if (md_info == NULL) {  in mbedtls_md_setup()
433     ctx->md_ctx = NULL;  in mbedtls_md_setup()
435     ctx->hmac_ctx = NULL;  in mbedtls_md_setup()
445         if (ctx->md_ctx == NULL) {  in mbedtls_md_setup()
502         if (ctx->hmac_ctx == NULL) {  in mbedtls_md_setup()
516     if (ctx == NULL || ctx->md_info == NULL) {  in mbedtls_md_starts()
577     if (ctx == NULL || ctx->md_info == NULL) {  in mbedtls_md_update()
633     if (ctx == NULL || ctx->md_info == NULL) {  in mbedtls_md_finish()
691     if (md_info == NULL) {  in mbedtls_md()
751     if (md_info == NULL) {  in mbedtls_md_get_size()
760     if (md_info == NULL) {  in mbedtls_md_get_type()
878     { NULL, MBEDTLS_MD_NONE },
883     if (NULL == md_name) {  in mbedtls_md_info_from_string()
884         return NULL;  in mbedtls_md_info_from_string()
888     while (entry->md_name != NULL &&  in mbedtls_md_info_from_string()
898     if (md_info == NULL) {  in mbedtls_md_get_name()
899         return NULL;  in mbedtls_md_get_name()
914     if (ctx == NULL) {  in mbedtls_md_info_from_ctx()
915         return NULL;  in mbedtls_md_info_from_ctx()
930     if (md_info == NULL) {  in mbedtls_md_file()
934     if ((f = fopen(path, "rb")) == NULL) {  in mbedtls_md_file()
939     mbedtls_setbuf(f, NULL);  in mbedtls_md_file()
978     if (ctx == NULL || ctx->md_info == NULL || ctx->hmac_ctx == NULL) {  in mbedtls_md_hmac_starts()
1022     if (ctx == NULL || ctx->md_info == NULL || ctx->hmac_ctx == NULL) {  in mbedtls_md_hmac_update()
1035     if (ctx == NULL || ctx->md_info == NULL || ctx->hmac_ctx == NULL) {  in mbedtls_md_hmac_finish()
1063     if (ctx == NULL || ctx->md_info == NULL || ctx->hmac_ctx == NULL) {  in mbedtls_md_hmac_reset()
1083     if (md_info == NULL) {  in mbedtls_md_hmac()