src/include/gpxe/base16.h

   1 #ifndef _IPXE_BASE16_H
   2 #define _IPXE_BASE16_H
   3
   4 /** @file
   5  *
   6  * Base16 encoding
   7  *
   8  */
   9
  10 FILE_LICENCE ( GPL2_OR_LATER );
  11
  12 #include <stdint.h>
  13 #include <string.h>
  14
  15 /**
  16  * Calculate length of base16-encoded data
  17  *
  18  * @v raw_len           Raw data length
  19  * @ret encoded_len     Encoded string length (excluding NUL)
  20  */
  21 static inline size_t base16_encoded_len ( size_t raw_len ) {
  22         return ( 2 * raw_len );
  23 }
  24
  25 /**
  26  * Calculate maximum length of base16-decoded string
  27  *
  28  * @v encoded           Encoded string
  29  * @v max_raw_len       Maximum length of raw data
  30  */
  31 static inline size_t base16_decoded_max_len ( const char *encoded ) {
  32         return ( ( strlen ( encoded ) + 1 ) / 2 );
  33 }
  34
  35 extern void base16_encode ( const uint8_t *raw, size_t len, char *encoded );
  36 extern int base16_decode ( const char *encoded, uint8_t *raw );
  37
  38 #endif /* _IPXE_BASE16_H */