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-rw-r--r--src/crypto/digest/digest.c273
1 files changed, 273 insertions, 0 deletions
diff --git a/src/crypto/digest/digest.c b/src/crypto/digest/digest.c
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+++ b/src/crypto/digest/digest.c
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+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to. The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code. The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * "This product includes cryptographic software written by
+ * Eric Young (eay@cryptsoft.com)"
+ * The word 'cryptographic' can be left out if the rouines from the library
+ * being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ * the apps directory (application code) you must include an acknowledgement:
+ * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed. i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/digest.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include <openssl/err.h>
+#include <openssl/obj.h>
+#include <openssl/mem.h>
+
+#include "internal.h"
+
+
+int EVP_MD_type(const EVP_MD *md) { return md->type; }
+
+const char *EVP_MD_name(const EVP_MD *md) { return OBJ_nid2sn(md->type); }
+
+uint32_t EVP_MD_flags(const EVP_MD *md) { return md->flags; }
+
+size_t EVP_MD_size(const EVP_MD *md) { return md->md_size; }
+
+size_t EVP_MD_block_size(const EVP_MD *md) { return md->block_size; }
+
+
+void EVP_MD_CTX_init(EVP_MD_CTX *ctx) { memset(ctx, 0, sizeof(EVP_MD_CTX)); }
+
+EVP_MD_CTX *EVP_MD_CTX_create(void) {
+ EVP_MD_CTX *ctx = OPENSSL_malloc(sizeof(EVP_MD_CTX));
+
+ if (ctx) {
+ EVP_MD_CTX_init(ctx);
+ }
+
+ return ctx;
+}
+
+int EVP_MD_CTX_cleanup(EVP_MD_CTX *ctx) {
+ if (ctx->digest && ctx->digest->ctx_size && ctx->md_data) {
+ OPENSSL_cleanse(ctx->md_data, ctx->digest->ctx_size);
+ OPENSSL_free(ctx->md_data);
+ }
+
+ assert(ctx->pctx == NULL || ctx->pctx_ops != NULL);
+ if (ctx->pctx_ops) {
+ ctx->pctx_ops->free(ctx->pctx);
+ }
+
+ EVP_MD_CTX_init(ctx);
+
+ return 1;
+}
+
+void EVP_MD_CTX_destroy(EVP_MD_CTX *ctx) {
+ if (!ctx) {
+ return;
+ }
+
+ EVP_MD_CTX_cleanup(ctx);
+ OPENSSL_free(ctx);
+}
+
+int EVP_MD_CTX_copy_ex(EVP_MD_CTX *out, const EVP_MD_CTX *in) {
+ uint8_t *tmp_buf = NULL;
+
+ if (in == NULL || in->digest == NULL) {
+ OPENSSL_PUT_ERROR(DIGEST, EVP_MD_CTX_copy_ex,
+ DIGEST_R_INPUT_NOT_INITIALIZED);
+ return 0;
+ }
+
+ if (out->digest == in->digest) {
+ /* |md_data| will be the correct size in this case so it's removed from
+ * |out| at this point so that |EVP_MD_CTX_cleanup| doesn't free it and
+ * then it's reused. */
+ tmp_buf = out->md_data;
+ out->md_data = NULL;
+ }
+
+ EVP_MD_CTX_cleanup(out);
+ memcpy(out, in, sizeof(EVP_MD_CTX));
+
+ if (in->md_data && in->digest->ctx_size) {
+ if (tmp_buf) {
+ out->md_data = tmp_buf;
+ } else {
+ out->md_data = OPENSSL_malloc(in->digest->ctx_size);
+ if (!out->md_data) {
+ OPENSSL_PUT_ERROR(DIGEST, EVP_MD_CTX_copy_ex, ERR_R_MALLOC_FAILURE);
+ return 0;
+ }
+ }
+ memcpy(out->md_data, in->md_data, in->digest->ctx_size);
+ }
+
+ assert(in->pctx == NULL || in->pctx_ops != NULL);
+ if (in->pctx && in->pctx_ops) {
+ out->pctx = in->pctx_ops->dup(in->pctx);
+ if (!out->pctx) {
+ EVP_MD_CTX_cleanup(out);
+ return 0;
+ }
+ }
+
+ return 1;
+}
+
+int EVP_MD_CTX_copy(EVP_MD_CTX *out, const EVP_MD_CTX *in) {
+ EVP_MD_CTX_init(out);
+ return EVP_MD_CTX_copy_ex(out, in);
+}
+
+int EVP_DigestInit_ex(EVP_MD_CTX *ctx, const EVP_MD *type, ENGINE *engine) {
+ if (ctx->digest != type) {
+ if (ctx->digest && ctx->digest->ctx_size) {
+ OPENSSL_free(ctx->md_data);
+ }
+ ctx->digest = type;
+ if (!(ctx->flags & EVP_MD_CTX_FLAG_NO_INIT) && type->ctx_size) {
+ ctx->update = type->update;
+ ctx->md_data = OPENSSL_malloc(type->ctx_size);
+ if (ctx->md_data == NULL) {
+ OPENSSL_PUT_ERROR(DIGEST, EVP_DigestInit_ex, ERR_R_MALLOC_FAILURE);
+ return 0;
+ }
+ }
+ }
+
+ assert(ctx->pctx == NULL || ctx->pctx_ops != NULL);
+ if (ctx->pctx_ops) {
+ if (!ctx->pctx_ops->begin_digest(ctx)) {
+ return 0;
+ }
+ }
+
+ if (ctx->flags & EVP_MD_CTX_FLAG_NO_INIT) {
+ return 1;
+ }
+
+ return ctx->digest->init(ctx);
+}
+
+int EVP_DigestInit(EVP_MD_CTX *ctx, const EVP_MD *type) {
+ EVP_MD_CTX_init(ctx);
+ return EVP_DigestInit_ex(ctx, type, NULL);
+}
+
+int EVP_DigestUpdate(EVP_MD_CTX *ctx, const void *data, size_t len) {
+ return ctx->update(ctx, data, len);
+}
+
+int EVP_DigestFinal_ex(EVP_MD_CTX *ctx, uint8_t *md_out, unsigned int *size) {
+ int ret;
+
+ assert(ctx->digest->md_size <= EVP_MAX_MD_SIZE);
+ ret = ctx->digest->final(ctx, md_out);
+ if (size != NULL) {
+ *size = ctx->digest->md_size;
+ }
+ OPENSSL_cleanse(ctx->md_data, ctx->digest->ctx_size);
+
+ return ret;
+}
+
+int EVP_DigestFinal(EVP_MD_CTX *ctx, uint8_t *md, unsigned int *size) {
+ int ret = EVP_DigestFinal_ex(ctx, md, size);
+ EVP_MD_CTX_cleanup(ctx);
+ return ret;
+}
+
+int EVP_Digest(const void *data, size_t count, uint8_t *out_md,
+ unsigned int *out_size, const EVP_MD *type, ENGINE *impl) {
+ EVP_MD_CTX ctx;
+ int ret;
+
+ EVP_MD_CTX_init(&ctx);
+ ret = EVP_DigestInit_ex(&ctx, type, impl) &&
+ EVP_DigestUpdate(&ctx, data, count) &&
+ EVP_DigestFinal_ex(&ctx, out_md, out_size);
+ EVP_MD_CTX_cleanup(&ctx);
+
+ return ret;
+}
+
+
+const EVP_MD *EVP_MD_CTX_md(const EVP_MD_CTX *ctx) {
+ if (ctx == NULL) {
+ return NULL;
+ }
+ return ctx->digest;
+}
+
+unsigned EVP_MD_CTX_size(const EVP_MD_CTX *ctx) {
+ return EVP_MD_size(EVP_MD_CTX_md(ctx));
+}
+
+unsigned EVP_MD_CTX_block_size(const EVP_MD_CTX *ctx) {
+ return EVP_MD_block_size(EVP_MD_CTX_md(ctx));
+}
+
+int EVP_MD_CTX_type(const EVP_MD_CTX *ctx) {
+ return EVP_MD_type(EVP_MD_CTX_md(ctx));
+}
+
+void EVP_MD_CTX_set_flags(EVP_MD_CTX *ctx, uint32_t flags) {
+ ctx->flags |= flags;
+}
+
+void EVP_MD_CTX_clear_flags(EVP_MD_CTX *ctx, uint32_t flags) {
+ ctx->flags &= ~flags;
+}
+
+uint32_t EVP_MD_CTX_test_flags(const EVP_MD_CTX *ctx, uint32_t flags) {
+ return ctx->flags & flags;
+}
+
+int EVP_add_digest(const EVP_MD *digest) {
+ return 1;
+}
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