--- /dev/null
+#ifndef T_SHA_H
+#define T_SHA_H
+
+#if !defined(P)
+#ifdef __STDC__
+#define P(x) x
+#else
+#define P(x) ()
+#endif
+#endif
+
+#define SHA_DIGESTSIZE 20
+
+typedef unsigned int uint32;
+
+typedef struct {
+ uint32 state[5];
+ uint32 count[2];
+ unsigned char buffer[64];
+} SHA1_CTX;
+
+void SHA1Init P((SHA1_CTX* context));
+void SHA1Update P((SHA1_CTX* context, const unsigned char* data, unsigned int len));
+void SHA1Final P((unsigned char digest[20], SHA1_CTX* context));
+
+#endif /* T_SHA_H */