Initial Commit

openssl-1.0.2f/engines/ccgost/gosthash.h

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+/**********************************************************************
+ *                          gosthash.h                                *
+ *             Copyright (c) 2005-2006 Cryptocom LTD                  *
+ *       This file is distributed under the same license as OpenSSL   *
+ *                                                                    *
+ *    Declaration of GOST R 34.11-94 hash functions                   *
+ *       uses  and gost89.h Doesn't need OpenSSL                      *
+ **********************************************************************/
+#ifndef GOSTHASH_H
+# define GOSTHASH_H
+# include "gost89.h"
+# include <stdlib.h>
+
+# if (defined(_WIN32) || defined(_WIN64)) && !defined(__MINGW32__)
+typedef __int64 ghosthash_len;
+# elif defined(__arch64__)
+typedef long ghosthash_len;
+# else
+typedef long long ghosthash_len;
+# endif
+
+typedef struct gost_hash_ctx {
+    ghosthash_len len;
+    gost_ctx *cipher_ctx;
+    int left;
+    byte H[32];
+    byte S[32];
+    byte remainder[32];
+} gost_hash_ctx;
+
+/* Initalizes gost hash ctx, including creation of gost cipher ctx */
+
+int init_gost_hash_ctx(gost_hash_ctx * ctx,
+                       const gost_subst_block * subst_block);
+void done_gost_hash_ctx(gost_hash_ctx * ctx);
+
+/*
+ * Cleans up all fields, except cipher ctx preparing ctx for computing of new
+ * hash value
+ */
+int start_hash(gost_hash_ctx * ctx);
+
+/* Hashes block of data */
+int hash_block(gost_hash_ctx * ctx, const byte * block, size_t length);
+
+/*
+ * Finalizes computation of hash and fills buffer (which should be at least
+ * 32 bytes long) with value of computed hash.
+ */
+int finish_hash(gost_hash_ctx * ctx, byte * hashval);
+
+#endif