Update copyright headers for dual licensing.

[gd/nettle] / sha2.h

diff --git a/sha2.h b/sha2.h
index f095dad10135e86286bde6cf53af0c652c74621c..d5f75a9159f5f17b273bf47da3b0f8d11cef6fb7 100644 (file)
--- a/sha2.h
+++ b/sha2.h
@@ -1,27 +1,35 @@
 /* sha2.h
- *
- * The sha2 family of hash functions.
- */
-
-/* nettle, low-level cryptographics library
- *
- * Copyright (C) 2001, 2012 Niels Möller
- *  
- * The nettle library is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License as published by
- * the Free Software Foundation; either version 2.1 of the License, or (at your
- * option) any later version.
- * 
- * The nettle library is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
- * License for more details.
- * 
- * You should have received a copy of the GNU Lesser General Public License
- * along with the nettle library; see the file COPYING.LIB.  If not, write to
- * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
- * MA 02111-1301, USA.
- */
+
+   The sha2 family of hash functions.
+
+   Copyright (C) 2001, 2012 Niels Möller
+
+   This file is part of GNU Nettle.
+
+   GNU Nettle is free software: you can redistribute it and/or
+   modify it under the terms of either:
+
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at your
+       option) any later version.
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at your
+       option) any later version.
+
+   or both in parallel, as here.
+
+   GNU Nettle is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received copies of the GNU General Public License and
+   the GNU Lesser General Public License along with this program.  If
+   not, see http://www.gnu.org/licenses/.
+*/
  
 #ifndef NETTLE_SHA2_H_INCLUDED
 #define NETTLE_SHA2_H_INCLUDED
@@ -43,6 +51,10 @@ extern "C" {
 #define sha512_init nettle_sha512_init
 #define sha512_update nettle_sha512_update
 #define sha512_digest nettle_sha512_digest
+#define sha512_224_init   nettle_sha512_224_init
+#define sha512_224_digest nettle_sha512_224_digest
+#define sha512_256_init   nettle_sha512_256_init
+#define sha512_256_digest nettle_sha512_256_digest
 
 /* SHA256 */
 
@@ -149,6 +161,34 @@ sha384_digest(struct sha512_ctx *ctx,
              size_t length,
              uint8_t *digest);
 
+
+/* SHA512_224 and SHA512_256, two truncated versions of SHA512 
+   with different initial states. */
+
+#define SHA512_224_DIGEST_SIZE 28
+#define SHA512_224_DATA_SIZE SHA512_DATA_SIZE
+void
+sha512_224_init(struct sha512_ctx *ctx);
+
+#define sha512_224_update nettle_sha512_update
+
+void
+sha512_224_digest(struct sha512_ctx *ctx,
+                  size_t length,
+                  uint8_t *digest);
+
+#define SHA512_256_DIGEST_SIZE 32
+#define SHA512_256_DATA_SIZE SHA512_DATA_SIZE
+void
+sha512_256_init(struct sha512_ctx *ctx);
+
+#define sha512_256_update nettle_sha512_update
+
+void
+sha512_256_digest(struct sha512_ctx *ctx,
+                  size_t length,
+                  uint8_t *digest);
+  
 #ifdef __cplusplus
 }
 #endif