* Created blowfish.c and blowfish.h (from GNUPG via LSH). Needs

more work.

Rev: src/nettle/blowfish.c:1.1
Rev: src/nettle/blowfish.h:1.1

src/nettle/blowfish.h

+/* blowfish.h
+ *
+ * Blowfish block cipher.
+ */
+
+/* nettle, low-level cryptographics library
+ *
+ * Copyright (C) 1998, 2001 FSF, Ray Dassen, Niels Mller
+ *  
+ * 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 GNU MP 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 GNU MP Library; see the file COPYING.LIB.  If not, write to
+ * the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+ * MA 02111-1307, USA.
+ */
+ 
+#ifndef NETTLE_BLOWFISH_H_INCLUDED
+#define NETTLE_BLOWFISH_H_INCLUDED
+
+#include <stdint.h>
+
+#define BLOWFISH_BLOCK_SIZE 8
+
+/* Variable key size between 64 and 448 bits. */
+#define BLOWFISH_MIN_KEY_SIZE 8
+#define BLOWFISH_MAX_KEY_SIZE 32
+
+/* Default to 128 bits */
+#define BLOWFISH_KEY_SIZE 16
+
+#define _BLOWFISH_ROUNDS 16
+
+enum blowfish_error { BLOWFISH_OK, BLOWFISH_WEAK_KEY };
+
+struct blowfish_ctx
+{
+  uint32_t s0[256];
+  uint32_t s1[256];
+  uint32_t s2[256];
+  uint32_t s3[256];
+  uint32_t p[_BLOWFISH_ROUNDS];
+  enum blowfish_error status;
+};
+
+void
+blowfish_set_key(struct blowfish_ctx *ctx,
+                 unsigned length, const uint8_t *key);
+
+void
+blowfish_encrypt(struct blowfish_ctx *ctx,
+                 unsigned length, uint8_t *dst,
+                 const uint8_t *src);
+void
+blowfish_decrypt(struct blowfish_ctx *ctx,
+                 unsigned length, uint8_t *dst,
+                 const uint8_t *src);
+
+#endif /* NETTLE_BLOWFISH_H_INCLUDED */