} SHA1_CTX;
//Function forward declerations
-void SHA1Transform(unsigned long state[5], unsigned char buffer[64]);
+void SHA1Transform(unsigned long state[5], const unsigned char buffer[64]);
void SHA1Init(SHA1_CTX* context);
-void SHA1Update(SHA1_CTX* context, unsigned char* data, unsigned int len);
+void SHA1Update(SHA1_CTX* context, const unsigned char* data, unsigned int len);
void SHA1Final(unsigned char digest[20], SHA1_CTX* context);
#endif /* __SHA1_H__ */