diff options
Diffstat (limited to 'src/include/taler_signatures.h')
| -rw-r--r-- | src/include/taler_signatures.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/include/taler_signatures.h b/src/include/taler_signatures.h index b8fe8a7b7..3ad97a577 100644 --- a/src/include/taler_signatures.h +++ b/src/include/taler_signatures.h @@ -31,6 +31,17 @@ #include "taler_util.h" /** + * Cut-and-choose size for refreshing. Client looses the gamble (of + * unaccountable transfers) with probability 1/KAPPA. Refresh cost + * increases linearly with KAPPA, and 3 is sufficient up to a + * income/sales tax of 66% of total transaction value. As there is + * no good reason to change this security parameter, we declare it + * fixed and part of the protocol. + */ +#define KAPPA 3 + + +/** * Purpose for signing public keys signed * by the mint master key. */ |