Generate seal that is verifiable using verify_seal function.

Arguments

• secret_seed - Seed used to derive the secret key
• input - VRF input data
• aux_data - Auxiliary data for the VRF proof

Returns

A byte vector with the following format:

• On success (97 bytes):
  • Byte 0: Status code 0 (RESULT_OK)
  • Bytes 1-32: Serialized VRF output (32 bytes, compressed) NOTE: not output hash!
  • Bytes 33-96: Serialized IETF VRF proof (64 bytes, compressed)
• On error (1 byte):
  • Byte 0: Status code 1 (RESULT_ERR)

Returns an error if the input cannot be converted to a valid VRF input point or if serialization of the output or proof fails.