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authorLukas Fleischer <calcurse@cryptocrack.de>2011-08-01 23:22:41 +0200
committerLukas Fleischer <calcurse@cryptocrack.de>2011-10-05 12:25:46 +0200
commit9dcb377a641841d66ed8c9c4b0ac960f609ff65a (patch)
tree2bea67378d171f3777c0d1e86bdea39efacadb9d /src/sha1.h
parent51c6386a05c174b9af04517da76ec725035a57a6 (diff)
downloadcalcurse-9dcb377a641841d66ed8c9c4b0ac960f609ff65a.zip
Add a SHA1 implementation
Add an implementation of the SHA1 hash algorithm based on a public domain project by Steve Reid <sreid@sea-to-sky.net>. 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 <calcurse@cryptocrack.de>
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+/*
+ * Calcurse - text-based organizer
+ *
+ * Copyright (c) 2004-2011 calcurse Development Team <misc@calcurse.org>
+ * 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 <stdint.h>
+
+#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 *);