fipsmodule/digest/digest.c

78 void EVP_MD_CTX_init(EVP_MD_CTX *ctx) {
79   OPENSSL_memset(ctx, 0, sizeof(EVP_MD_CTX));
83   EVP_MD_CTX *ctx = OPENSSL_malloc(sizeof(EVP_MD_CTX));
85   if (ctx) {
86     EVP_MD_CTX_init(ctx);
89   return ctx;
94 int EVP_MD_CTX_cleanup(EVP_MD_CTX *ctx) {
95   OPENSSL_free(ctx->md_data);
97   assert(ctx->pctx == NULL || ctx->pctx_ops != NULL);
98   if (ctx->pctx_ops) {
99     ctx->pctx_ops->free(ctx->pctx);
102   EVP_MD_CTX_init(ctx);
107 void EVP_MD_CTX_free(EVP_MD_CTX *ctx) {
108   if (!ctx) {
112   EVP_MD_CTX_cleanup(ctx);
113   OPENSSL_free(ctx);
116 void EVP_MD_CTX_destroy(EVP_MD_CTX *ctx) { EVP_MD_CTX_free(ctx); }
169 int EVP_MD_CTX_reset(EVP_MD_CTX *ctx) {
170   EVP_MD_CTX_cleanup(ctx);
171   EVP_MD_CTX_init(ctx);
175 int EVP_DigestInit_ex(EVP_MD_CTX *ctx, const EVP_MD *type, ENGINE *engine) {
176   if (ctx->digest != type) {
184     OPENSSL_free(ctx->md_data);
185     ctx->md_data = md_data;
186     ctx->digest = type;
189   assert(ctx->pctx == NULL || ctx->pctx_ops != NULL);
191   ctx->digest->init(ctx);
195 int EVP_DigestInit(EVP_MD_CTX *ctx, const EVP_MD *type) {
196   EVP_MD_CTX_init(ctx);
197   return EVP_DigestInit_ex(ctx, type, NULL);
200 int EVP_DigestUpdate(EVP_MD_CTX *ctx, const void *data, size_t len) {
201   ctx->digest->update(ctx, data, len);
205 int EVP_DigestFinal_ex(EVP_MD_CTX *ctx, uint8_t *md_out, unsigned int *size) {
206   assert(ctx->digest->md_size <= EVP_MAX_MD_SIZE);
207   ctx->digest->final(ctx, md_out);
209     *size = ctx->digest->md_size;
211   OPENSSL_cleanse(ctx->md_data, ctx->digest->ctx_size);
215 int EVP_DigestFinal(EVP_MD_CTX *ctx, uint8_t *md, unsigned int *size) {
216   (void)EVP_DigestFinal_ex(ctx, md, size);
217   EVP_MD_CTX_cleanup(ctx);
223   EVP_MD_CTX ctx;
226   EVP_MD_CTX_init(&ctx);
227   ret = EVP_DigestInit_ex(&ctx, type, impl) &&
228         EVP_DigestUpdate(&ctx, data, count) &&
229         EVP_DigestFinal_ex(&ctx, out_md, out_size);
230   EVP_MD_CTX_cleanup(&ctx);
236 const EVP_MD *EVP_MD_CTX_md(const EVP_MD_CTX *ctx) {
237   if (ctx == NULL) {
240   return ctx->digest;
243 size_t EVP_MD_CTX_size(const EVP_MD_CTX *ctx) {
244   return EVP_MD_size(EVP_MD_CTX_md(ctx));
247 size_t EVP_MD_CTX_block_size(const EVP_MD_CTX *ctx) {
248   return EVP_MD_block_size(EVP_MD_CTX_md(ctx));
251 int EVP_MD_CTX_type(const EVP_MD_CTX *ctx) {
252   return EVP_MD_type(EVP_MD_CTX_md(ctx));