From 9dcb377a641841d66ed8c9c4b0ac960f609ff65a Mon Sep 17 00:00:00 2001 From: Lukas Fleischer Date: Mon, 1 Aug 2011 23:22:41 +0200 Subject: Add a SHA1 implementation Add an implementation of the SHA1 hash algorithm based on a public domain project by Steve Reid . You can get the original sources from: ftp://ftp.funet.fi/pub/crypt/hash/sha/sha1.c We will need this for several things. File names of note files will be generated based on a hash their content instead of using a random name. Items can be uniquely identified using a hash. In addition to the regular sha1_init(), sha1_update() and sha1_final() operations, our implementation also contains wrappers for hashing a string or a stream. Signed-off-by: Lukas Fleischer --- src/sha1.h | 57 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 57 insertions(+) create mode 100644 src/sha1.h (limited to 'src/sha1.h') diff --git a/src/sha1.h b/src/sha1.h new file mode 100644 index 0000000..2e28bd4 --- /dev/null +++ b/src/sha1.h @@ -0,0 +1,57 @@ +/* + * Calcurse - text-based organizer + * + * Copyright (c) 2004-2011 calcurse Development Team + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above + * copyright notice, this list of conditions and the + * following disclaimer. + * + * - Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the + * following disclaimer in the documentation and/or other + * materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * Send your feedback or comments to : misc@calcurse.org + * Calcurse home page : http://calcurse.org + * + * This code is based on Steve Reid's public domain SHA1 implementation. + * + * The original version is available at: + * ftp://ftp.funet.fi/pub/crypt/hash/sha/sha1.c + * + */ + +#include + +#define SHA1_BLOCKLEN 64 +#define SHA1_DIGESTLEN 20 + +typedef struct { + uint32_t state[5]; + uint32_t count[2]; + uint8_t buffer[SHA1_BLOCKLEN]; +} sha1_ctx_t; + +void sha1_init (sha1_ctx_t *); +void sha1_update (sha1_ctx_t *, const uint8_t *, unsigned int); +void sha1_final (sha1_ctx_t *, uint8_t *); +void sha1_digest (const char *, char *); +void sha1_stream (FILE *, char *); -- cgit v1.2.3