mirror of
https://github.com/apprenticeharper/DeDRM_tools
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69 lines
2.2 KiB
C
69 lines
2.2 KiB
C
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/*
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sha1.h: Implementation of SHA-1 Secure Hash Algorithm-1
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Based upon: NIST FIPS180-1 Secure Hash Algorithm-1
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http://www.itl.nist.gov/fipspubs/fip180-1.htm
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Non-official Japanese Translation by HIRATA Yasuyuki:
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http://yasu.asuka.net/translations/SHA-1.html
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Copyright (C) 2002 vi@nwr.jp. All rights reserved.
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgement in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as beging the original software.
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3. This notice may not be removed or altered from any source distribution.
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Note:
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The copyright notice above is copied from md5.h by L. Petet Deutsch
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<ghost@aladdin.com>. Thank him since I'm not a good speaker of English. :)
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*/
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#ifndef SHA1_H
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#define SHA1_H
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typedef unsigned int sha1_word_t; /* 32bits unsigned integer */
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typedef unsigned char sha1_byte_t; /* 8bits unsigned integer */
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#define BITS 8
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/* Define the state of SHA-1 algorithm */
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typedef struct {
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sha1_byte_t sha1_buf[64]; /* 512 bits */
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int sha1_count; /* How many bytes are used */
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sha1_word_t sha1_size1; /* Length counter Lower Word */
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sha1_word_t sha1_size2; /* Length counter Upper Word */
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sha1_word_t sha1_h[5]; /* Hash output */
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} sha1_state_s;
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#define SHA1_OUTPUT_SIZE 20 /* in bytes */
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/* External Functions */
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Initialize SHA-1 algorithm */
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void sha1_init(sha1_state_s *pms);
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/* Append a string to SHA-1 algorithm */
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void sha1_update(sha1_state_s *pms, sha1_byte_t *input_buffer, int length);
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/* Finish the SHA-1 algorithm and return the hash */
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void sha1_finish(sha1_state_s *pms, sha1_byte_t output[SHA1_OUTPUT_SIZE]);
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#ifdef __cplusplus
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}
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#endif
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#endif
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