The main author of Botan is:

Name: Jack Lloyd
Email: <lloyd@randombit.net>
PGP Key Fingerprint: 2DD2 95F9 C7E3 A15E AF29 80E1 D6A9 A5B9 4DCD F398

Also see doc/thanks.txt for a list of people who have contributed bug reports,
ideas, information, and/or code.
