Initial commit providing GOST 2012 algorithms.

1 files changed, 97 insertions, 0 deletions

diff --git a/gost_md2012.c b/gost_md2012.c
new file mode 100644
index 0000000..d909b4f
--- /dev/null
+++ b/gost_md2012.c
@@ -0,0 +1,97 @@
+/**********************************************************************
+ *                          gost_md2012.c                             *
+ *             Copyright (c) 2013 Cryptocom LTD.                      *
+ *         This file is distributed under the same license as OpenSSL *
+ *                                                                    *
+ *          GOST R 34.11-2012 interface to OpenSSL engine.            *
+ *                                                                    *
+ * Author: Alexey Degtyarev <alexey@renatasystems.org>                *
+ *                                                                    *
+ **********************************************************************/
+
+#include <openssl/evp.h>
+#include "gosthash2012.h"
+
+static int gost_digest_init512(EVP_MD_CTX *ctx);
+static int gost_digest_init256(EVP_MD_CTX *ctx);
+static int gost_digest_update(EVP_MD_CTX *ctx, const void *data,
+                              size_t count);
+static int gost_digest_final(EVP_MD_CTX *ctx, unsigned char *md);
+static int gost_digest_copy(EVP_MD_CTX *to, const EVP_MD_CTX *from);
+static int gost_digest_cleanup(EVP_MD_CTX *ctx);
+
+EVP_MD digest_gost2012_512 = {
+    NID_id_GostR3411_2012_512,
+    NID_undef,
+    64,                         /* digest size */
+    EVP_MD_FLAG_PKEY_METHOD_SIGNATURE,
+    gost_digest_init512,
+    gost_digest_update,
+    gost_digest_final,
+    gost_digest_copy,
+    gost_digest_cleanup,
+    NULL,
+    NULL,
+    {NID_undef, NID_undef, 0, 0, 0},
+    64,                         /* block size */
+    sizeof(gost2012_hash_ctx),
+    NULL
+};
+
+EVP_MD digest_gost2012_256 = {
+    NID_id_GostR3411_2012_256,
+    NID_undef,
+    32,                         /* digest size */
+    EVP_MD_FLAG_PKEY_METHOD_SIGNATURE,
+    gost_digest_init256,
+    gost_digest_update,
+    gost_digest_final,
+    gost_digest_copy,
+    gost_digest_cleanup,
+    NULL,
+    NULL,
+    {NID_undef, NID_undef, 0, 0, 0},
+    64,                         /* block size */
+    sizeof(gost2012_hash_ctx),
+    NULL
+};
+
+static int gost_digest_init512(EVP_MD_CTX *ctx)
+{
+    init_gost2012_hash_ctx((gost2012_hash_ctx *) ctx->md_data, 512);
+    return 1;
+}
+
+static int gost_digest_init256(EVP_MD_CTX *ctx)
+{
+    init_gost2012_hash_ctx((gost2012_hash_ctx *) ctx->md_data, 256);
+    return 1;
+}
+
+static int gost_digest_update(EVP_MD_CTX *ctx, const void *data, size_t count)
+{
+    gost2012_hash_block((gost2012_hash_ctx *) ctx->md_data, data, count);
+    return 1;
+}
+
+static int gost_digest_final(EVP_MD_CTX *ctx, unsigned char *md)
+{
+    gost2012_finish_hash((gost2012_hash_ctx *) ctx->md_data, md);
+    return 1;
+}
+
+static int gost_digest_copy(EVP_MD_CTX *to, const EVP_MD_CTX *from)
+{
+    if (to->md_data && from->md_data)
+        memcpy(to->md_data, from->md_data, sizeof(from->md_data));
+
+    return 1;
+}
+
+static int gost_digest_cleanup(EVP_MD_CTX *ctx)
+{
+    if (ctx->md_data)
+        memset(ctx->md_data, 0x00, sizeof(gost2012_hash_ctx));
+
+    return 1;
+}