Mercurial > gnulib
view lib/arcfour.h @ 40215:88b18d82fa61
crypto/des: Fix undefined behaviour.
* lib/des.c (READ_64BIT_DATA): Cast bytes to 'unsigned int', to avoid
shift operations on 'int'.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Sat, 09 Mar 2019 22:21:25 +0100 |
parents | b06060465f09 |
children |
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/* arcfour.h --- The arcfour stream cipher * Copyright (C) 2000-2005, 2009-2019 Free Software Foundation, Inc. * * This file is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published * by the Free Software Foundation; either version 2, or (at your * option) any later version. * * This file 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 a copy of the GNU General Public License * along with this file; if not, see <https://www.gnu.org/licenses/>. * */ /* Code from Libgcrypt adapted for gnulib by Simon Josefsson. */ #ifndef ARCFOUR_H # define ARCFOUR_H # include <stddef.h> # include <stdint.h> #define ARCFOUR_SBOX_SIZE 256 typedef struct { char sbox[ARCFOUR_SBOX_SIZE]; uint8_t idx_i, idx_j; } arcfour_context; /* Apply ARCFOUR stream to INBUF placing the result in OUTBUF, both of LENGTH size. CONTEXT must be initialized with arcfour_setkey before this function is called. */ extern void arcfour_stream (arcfour_context * context, const char *inbuf, char *outbuf, size_t length); /* Initialize CONTEXT using encryption KEY of KEYLEN bytes. KEY should be 40 bits (5 bytes) or longer. The KEY cannot be zero length. */ extern void arcfour_setkey (arcfour_context * context, const char *key, size_t keylen); #endif /* ARCFOUR_H */