The handlers for the commit- and reveal-phases of the age-withdraw
HTTP-endpoints are implemented, yet not active.
Still missing:
- support for age-withdraw is missing in lib/.
- tests
- Unit-tests for commit, derive, attest and verify added, with multiple
combinations of minimum age and commited age.
- Fixed crypto implementation (eddsa -> ecdsa)
- Using now standard functionality from GNUNET:
GNUNET_CRYPTO_ecdsa_{private,public}_key_derive
All tests pass (unit tests in util/ and 'make check' in testing).