/* logging and output functions: */
-void err(const char* fmt, ...);
+void err(int level, const char* fmt, ...);
void logfunc(int level, const char* string);
/* basic datum manipulations: */
int convert_string_to_keyid(gnutls_openpgp_keyid_t out, const char* str);
int convert_string_to_printable_keyid(printable_keyid out, const char* str);
+/* you must have twice as many bytes in the out buffer as in the in buffer */
+void hex_print_data(char* out, const unsigned char* in, size_t incount);
+
+/* expects a null-terminated string as in, containing an even number
+ of hexadecimal characters.
+
+ returns length in *bits* of raw data as output.
+
+ the out buffer must be at least half as long as in to hold the
+ output. if out is NULL, no output will be generated, but the
+ length will still be returned.
+*/
+unsigned int hexstring2bin(unsigned char* out, const char* in);
/* functions to get data into datum objects: */