30d7ead6af
* Implements RFC 4226 (HOTP) and RFC 6238 (TOTP) * Adds sha1.c to apps/plugins/lib (orignally tools/hmac-sha1.c) * See manual entry for more information Change-Id: Ia4a4031b29f97361b541e71438aa7f3ea82212f2
116 lines
4.2 KiB
C
116 lines
4.2 KiB
C
/* Taken from gnulib (http://savannah.gnu.org/projects/gnulib/) */
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/* Declarations of functions and data types used for SHA1 sum
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library functions.
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Copyright (C) 2000, 2001, 2003, 2005, 2006 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2, or (at your option) any
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later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software Foundation,
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Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
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#ifndef SHA1_H
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#define SHA1_H 1
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#include "plugin.h"
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/* Structure to save state of computation between the single steps. */
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struct sha1_ctx
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{
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uint32_t A;
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uint32_t B;
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uint32_t C;
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uint32_t D;
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uint32_t E;
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uint32_t total[2];
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uint32_t buflen;
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uint32_t buffer[32];
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};
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/* Initialize structure containing state of computation. */
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void sha1_init_ctx (struct sha1_ctx *ctx);
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/* Starting with the result of former calls of this function (or the
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initialization function update the context for the next LEN bytes
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starting at BUFFER.
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It is necessary that LEN is a multiple of 64!!! */
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void sha1_process_block (const void *buffer, size_t len,
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struct sha1_ctx *ctx);
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/* Starting with the result of former calls of this function (or the
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initialization function update the context for the next LEN bytes
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starting at BUFFER.
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It is NOT required that LEN is a multiple of 64. */
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void sha1_process_bytes (const void *buffer, size_t len,
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struct sha1_ctx *ctx);
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/* Process the remaining bytes in the buffer and put result from CTX
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in first 20 bytes following RESBUF. The result is always in little
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endian byte order, so that a byte-wise output yields to the wanted
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ASCII representation of the message digest.
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IMPORTANT: On some systems it is required that RESBUF be correctly
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aligned for a 32 bits value. */
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void *sha1_finish_ctx (struct sha1_ctx *ctx, void *resbuf);
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/* Put result from CTX in first 20 bytes following RESBUF. The result is
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always in little endian byte order, so that a byte-wise output yields
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to the wanted ASCII representation of the message digest.
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IMPORTANT: On some systems it is required that RESBUF is correctly
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aligned for a 32 bits value. */
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void *sha1_read_ctx (const struct sha1_ctx *ctx, void *resbuf);
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/* Compute SHA1 message digest for LEN bytes beginning at BUFFER. The
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result is always in little endian byte order, so that a byte-wise
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output yields to the wanted ASCII representation of the message
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digest. */
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void *sha1_buffer (const char *buffer, size_t len, void *resblock);
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#endif
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/* hmac.h -- hashed message authentication codes
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Copyright (C) 2005 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software Foundation,
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Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
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/* Written by Simon Josefsson. */
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#ifndef HMAC_H
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#define HMAC_H 1
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#include <stddef.h>
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/* Compute Hashed Message Authentication Code with SHA-1, over BUFFER
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data of BUFLEN bytes using the KEY of KEYLEN bytes, writing the
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output to pre-allocated 20 byte minimum RESBUF buffer. Return 0 on
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success. */
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int
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hmac_sha1 (const void *key, size_t keylen,
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const void *in, size_t inlen, void *resbuf);
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#endif /* HMAC_H */
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