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author | Niels Möller <nisse@lysator.liu.se> | 2001-04-13 00:03:15 +0200 |
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committer | Niels Möller <nisse@lysator.liu.se> | 2001-04-13 00:03:15 +0200 |
commit | 8ae5b57640cd5f0381dadfe2299dea54e2ded93e (patch) | |
tree | 6fc53c08c0b81339e903cf1ea35c74e36e2a5417 /arcfour.h | |
parent | a4f63af3021954e8cda13078ae2de6a20ff0830b (diff) | |
download | nettle-8ae5b57640cd5f0381dadfe2299dea54e2ded93e.tar.gz |
* Initial checkin.
Rev: src/nettle/.bootstrap:1.1
Rev: src/nettle/.c-style:1.1
Rev: src/nettle/AUTHORS:1.1
Rev: src/nettle/ChangeLog:1.1
Rev: src/nettle/Makefile.am:1.1
Rev: src/nettle/NEWS:1.1
Rev: src/nettle/README:1.1
Rev: src/nettle/aes.c:1.1
Rev: src/nettle/aes.h:1.1
Rev: src/nettle/arcfour.c:1.1
Rev: src/nettle/arcfour.h:1.1
Rev: src/nettle/configure.in:1.1
Rev: src/nettle/macros.h:1.1
Rev: src/nettle/md5.c:1.1
Rev: src/nettle/md5.h:1.1
Rev: src/nettle/memxor.c:1.1
Rev: src/nettle/memxor.h:1.1
Rev: src/nettle/testsuite/.c-style:1.1
Rev: src/nettle/testsuite/Makefile.am:1.1
Rev: src/nettle/testsuite/aes-test.m4:1.1
Rev: src/nettle/testsuite/arcfour-test.m4:1.1
Rev: src/nettle/testsuite/macros.m4:1.1
Rev: src/nettle/testsuite/md5-test.m4:1.1
Rev: src/nettle/testsuite/run-tests:1.1
Rev: src/nettle/testsuite/testutils.c:1.1
Rev: src/nettle/testsuite/testutils.h:1.1
Diffstat (limited to 'arcfour.h')
-rw-r--r-- | arcfour.h | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/arcfour.h b/arcfour.h new file mode 100644 index 00000000..91611113 --- /dev/null +++ b/arcfour.h @@ -0,0 +1,58 @@ +/* arcfour.h + * + * The arcfour/rc4 stream cipher. + */ + +/* nettle, low-level cryptographics library + * + * Copyright (C) 2001 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_ARCFOUR_H_INCLUDED +#define NETTLE_ARCFOUR_H_INCLUDED + +#include <stdint.h> + +/* Minimum and maximum keysizes, and a reasonable default. In + * octets.*/ +#define ARCFOUR_MIN_KEY_SIZE 1 +#define ARCFOUR_MAX_KEY_SIZE 256 +#define ARCFOUR_KEY_SIZE 16 + +struct arcfour_ctx +{ + uint8_t S[256]; + uint8_t i; + uint8_t j; +}; + +void +arcfour_set_key(struct arcfour_ctx *ctx, + unsigned length, const uint8_t *key); + +void +arcfour_crypt(struct arcfour_ctx *ctx, + unsigned length, uint8_t *dst, + const uint8_t *src); + +void +arcfour_stream(struct arcfour_ctx *ctx, + unsigned length, uint8_t *dst); + +#endif /* NETTLE_ARCFOUR_H_INCLUDED */ + |