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/* $OpenBSD: sha1.h,v 1.24 2012/12/05 23:19:57 deraadt Exp $ */
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/*
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* SHA-1 in C
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* By Steve Reid <steve@edmweb.com>
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* 100% Public Domain
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*/
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#ifndef _SHA1_H
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#define _SHA1_H
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#define SHA1_BLOCK_LENGTH 64
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#define SHA1_DIGEST_LENGTH 20
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#define SHA1_DIGEST_STRING_LENGTH (SHA1_DIGEST_LENGTH * 2 + 1)
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typedef struct {
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u_int32_t state[5];
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u_int64_t count;
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u_int8_t buffer[SHA1_BLOCK_LENGTH];
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} SHA1_CTX;
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__BEGIN_DECLS
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void SHA1Init(SHA1_CTX *);
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void SHA1Pad(SHA1_CTX *);
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void SHA1Transform(u_int32_t [5], const u_int8_t [SHA1_BLOCK_LENGTH])
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__attribute__((__bounded__(__minbytes__,1,5)))
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__attribute__((__bounded__(__minbytes__,2,SHA1_BLOCK_LENGTH)));
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void SHA1Update(SHA1_CTX *, const u_int8_t *, size_t)
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__attribute__((__bounded__(__string__,2,3)));
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void SHA1Final(u_int8_t [SHA1_DIGEST_LENGTH], SHA1_CTX *)
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__attribute__((__bounded__(__minbytes__,1,SHA1_DIGEST_LENGTH)));
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char *SHA1End(SHA1_CTX *, char *)
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__attribute__((__bounded__(__minbytes__,2,SHA1_DIGEST_STRING_LENGTH)));
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char *SHA1File(const char *, char *)
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__attribute__((__bounded__(__minbytes__,2,SHA1_DIGEST_STRING_LENGTH)));
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char *SHA1FileChunk(const char *, char *, off_t, off_t)
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__attribute__((__bounded__(__minbytes__,2,SHA1_DIGEST_STRING_LENGTH)));
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char *SHA1Data(const u_int8_t *, size_t, char *)
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__attribute__((__bounded__(__string__,1,2)))
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__attribute__((__bounded__(__minbytes__,3,SHA1_DIGEST_STRING_LENGTH)));
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__END_DECLS
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#define HTONDIGEST(x) do { \
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x[0] = htonl(x[0]); \
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x[1] = htonl(x[1]); \
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x[2] = htonl(x[2]); \
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x[3] = htonl(x[3]); \
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x[4] = htonl(x[4]); } while (0)
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#define NTOHDIGEST(x) do { \
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x[0] = ntohl(x[0]); \
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x[1] = ntohl(x[1]); \
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x[2] = ntohl(x[2]); \
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x[3] = ntohl(x[3]); \
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x[4] = ntohl(x[4]); } while (0)
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#endif /* _SHA1_H */
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