* fourth argument: non-zero for text content, and for which CR's should be skipped
* fifth argument: for an MD5 digest, it can be null
*/
-int decodeBase64 (const char *, const char **, size_t *, int, unsigned char *);
+int decodeBase64 (const char *, unsigned char **, size_t *, int,
+ unsigned char *);
void hexify (const unsigned char *, size_t, char **);