82 lines
2.3 KiB
C
82 lines
2.3 KiB
C
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/*
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Cubesat Space Protocol - A small network-layer protocol designed for Cubesats
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Copyright (C) 2012 GomSpace ApS (http://www.gomspace.com)
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Copyright (C) 2012 AAUSAT3 Project (http://aausat3.space.aau.dk)
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library 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 GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef _CSP_SHA1_H_
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#define _CSP_SHA1_H_
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* The SHA1 block and message digest size in bytes */
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#define SHA1_BLOCKSIZE 64
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#define SHA1_DIGESTSIZE 20
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/**
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SHA1 state structure
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*/
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typedef struct {
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//! Internal SHA1 state.
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uint64_t length;
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//! Internal SHA1 state.
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uint32_t state[5];
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//! Internal SHA1 state.
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uint32_t curlen;
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//! Internal SHA1 state.
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uint8_t buf[SHA1_BLOCKSIZE];
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} csp_sha1_state;
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/**
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* Initialize the hash state
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* @param sha1 The hash state you wish to initialize
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*/
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void csp_sha1_init(csp_sha1_state * sha1);
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/**
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* Process a block of memory though the hash
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* @param sha1 The hash state
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* @param in The data to hash
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* @param inlen The length of the data (octets)
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*/
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void csp_sha1_process(csp_sha1_state * sha1, const uint8_t * in, uint32_t inlen);
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/**
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* Terminate the hash to get the digest
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* @param sha1 The hash state
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* @param out [out] The destination of the hash (20 bytes)
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*/
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void csp_sha1_done(csp_sha1_state * sha1, uint8_t * out);
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/**
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* Calculate SHA1 hash of block of memory.
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* @param msg Pointer to message buffer
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* @param len Length of message
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* @param sha1 Pointer to SHA1 output buffer. Must be 20 bytes or more!
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*/
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void csp_sha1_memory(const uint8_t * msg, uint32_t len, uint8_t * hash);
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif // _CSP_SHA1_H_
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