ot: Debugging sendPublicKeys().
ot: sendPublicKeys() successfully sends 1 key.
ot: sendPublicKeys() sends both keys-check correctness.
ot: Better documented read_exactly().
ot: OTreceive() reads correct secret size.
ot: Changed sizes for reading public keys.
ot: Added goodbye to OT protocol; generalized sequence sending.
ot: Added better error messages for RSA de/encryption.