From 3f1a196e08a35ba79ddd33ad0f3424b8f9a06767 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Niels=20M=C3=B6ller?= Date: Fri, 15 Jun 2001 17:06:17 +0200 Subject: * 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 --- blowfish.h | 67 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 67 insertions(+) create mode 100644 blowfish.h (limited to 'blowfish.h') diff --git a/blowfish.h b/blowfish.h new file mode 100644 index 00000000..dab0de15 --- /dev/null +++ b/blowfish.h @@ -0,0 +1,67 @@ +/* blowfish.h + * + * Blowfish block cipher. + */ + +/* nettle, low-level cryptographics library + * + * Copyright (C) 1998, 2001 FSF, Ray Dassen, 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 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 + +#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 */ -- cgit v1.2.1