From clauflibitFriiDump-0.5.3.1

libmultihash/sha1.h

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+/* 
+** sha1.h
+**
+** Copyright NTT MCL, 2000.
+**
+** Satomi Okazaki
+** Security Group, NTT MCL
+** November 1999
+**
+**************************
+** 13 December 1999.  In SHA1Transform, changed "buffer" to be const.
+** In SHA1Update, changed "data to be const.  -- S.O.
+*/
+#ifndef __SHA1_H__
+#define __SHA1_H__
+
+#include <stdio.h>
+#include <string.h>
+
+#ifndef SHA1_DIGESTSIZE
+#define SHA1_DIGESTSIZE  20
+#endif
+
+#ifndef SHA1_BLOCKSIZE
+#define SHA1_BLOCKSIZE   64
+#endif
+
+typedef struct {
+    unsigned long state[5];
+    unsigned long count[2];	/* stores the number of bits */
+    unsigned char buffer[SHA1_BLOCKSIZE];
+} SHA1_CTX; 
+
+void SHA1Transform(unsigned long state[5], const unsigned char buffer[SHA1_BLOCKSIZE]);
+void SHA1Init(SHA1_CTX *context);
+void SHA1Update(SHA1_CTX *context, const unsigned char *data, unsigned long len);
+void SHA1Final(unsigned char digest[SHA1_DIGESTSIZE], SHA1_CTX *context);
+
+#endif /* __SHA1_H__ */