diff options
Diffstat (limited to 'src/include/taler_crypto_lib.h')
| -rw-r--r-- | src/include/taler_crypto_lib.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/src/include/taler_crypto_lib.h b/src/include/taler_crypto_lib.h index 16240e5a3..87020fbbe 100644 --- a/src/include/taler_crypto_lib.h +++ b/src/include/taler_crypto_lib.h @@ -428,6 +428,37 @@ struct TALER_RefreshLinkDecrypted }; +/** + * Binary information encoded in Crockford's Base32 in wire transfer + * subjects of transfers from Taler to a merchant. The actual value + * is chosen by the mint and has no particular semantics, other than + * being unique so that the mint can lookup details about the wire + * transfer when needed. + */ +struct TALER_WireTransferIdentifierP +{ + + /** + * Raw value. Note that typical payment systems (SEPA, ACH) support + * at least two lines of 27 ASCII characters to encode a transaction + * subject or "details", for a total of 54 characters. (The payment + * system protocols often support more lines, but the forms presented + * to customers are usually limited to 54 characters.) + * + * With a Base32-encoding of 5 bit per character, this gives us 270 + * bits or (rounded down) 33 bytes. So we use the first 32 bytes to + * encode the actual value (i.e. a 256-bit / 32-byte public key or + * a hash code), and the last byte for a minimalistic checksum. + */ + uint8_t raw[32]; + + /** + * Checksum using CRC8 over the @e raw data. + */ + uint8_t crc8; +}; + + GNUNET_NETWORK_STRUCT_END |