Initial community commit

Src/external_dependencies/libdiscid-0.6.2/src/sha1.h

@@ -0,0 +1,63 @@
+/* NIST Secure Hash Algorithm */
+/* heavily modified by Uwe Hollerbach <uh@alumni.caltech edu> */
+/* from Peter C. Gutmann's implementation as found in */
+/* Applied Cryptography by Bruce Schneier */
+/* This code is in the public domain */
+/* $Id$ */
+
+#ifndef SHA_H
+#define SHA_H
+
+#include <stdlib.h>
+#include <stdio.h>
+#include "discid/discid.h" /* for LIBDISCID_INTERNAL */
+
+/* Useful defines & typedefs */
+typedef unsigned char SHA_BYTE;	/* 8-bit quantity */
+typedef unsigned long SHA_LONG;	/* 32-or-more-bit quantity */
+
+#define SHA_BLOCKSIZE		64
+#define SHA_DIGESTSIZE		20
+
+typedef struct {
+    SHA_LONG digest[5];		/* message digest */
+    SHA_LONG count_lo, count_hi;	/* 64-bit bit count */
+    SHA_BYTE data[SHA_BLOCKSIZE];	/* SHA data buffer */
+    size_t local;			/* unprocessed amount in data */
+} SHA_INFO;
+
+LIBDISCID_INTERNAL void sha_init(SHA_INFO *);
+LIBDISCID_INTERNAL void sha_update(SHA_INFO *, SHA_BYTE *, size_t);
+LIBDISCID_INTERNAL void sha_final(unsigned char [20], SHA_INFO *);
+
+LIBDISCID_INTERNAL void sha_stream(unsigned char [20], SHA_INFO *, FILE *);
+LIBDISCID_INTERNAL void sha_print(unsigned char [20]);
+LIBDISCID_INTERNAL char *sha_version(void);
+
+#define SHA_VERSION 1
+
+#ifdef HAVE_CONFIG_H 
+#include "config.h"
+
+
+#ifdef WORDS_BIGENDIAN
+#  if SIZEOF_LONG == 4
+#    define SHA_BYTE_ORDER  4321
+#  elif SIZEOF_LONG == 8
+#    define SHA_BYTE_ORDER  87654321
+#  endif
+#else
+#  if SIZEOF_LONG == 4
+#    define SHA_BYTE_ORDER  1234
+#  elif SIZEOF_LONG == 8
+#    define SHA_BYTE_ORDER  12345678
+#  endif
+#endif
+
+#else
+
+#define SHA_BYTE_ORDER 1234
+
+#endif
+
+#endif /* SHA_H */