--
-- PGP Public Key Encryption
--
-- successful encrypt/decrypt
select pgp_pub_decrypt(
	pgp_pub_encrypt('Secret msg', dearmor(pubkey)),
	dearmor(seckey))
from keytbl where keytbl.id=1;
 pgp_pub_decrypt 
-----------------
 Secret msg
(1 row)

select pgp_pub_decrypt(
		pgp_pub_encrypt('Secret msg', dearmor(pubkey)),
		dearmor(seckey))
from keytbl where keytbl.id=2;
 pgp_pub_decrypt 
-----------------
 Secret msg
(1 row)

select pgp_pub_decrypt(
		pgp_pub_encrypt('Secret msg', dearmor(pubkey)),
		dearmor(seckey))
from keytbl where keytbl.id=3;
 pgp_pub_decrypt 
-----------------
 Secret msg
(1 row)

-- try with rsa-sign only
select pgp_pub_decrypt(
		pgp_pub_encrypt('Secret msg', dearmor(pubkey)),
		dearmor(seckey))
from keytbl where keytbl.id=4;
ERROR:  pgp_encrypt error: No usable key found (expecting Elgamal key)
-- try with secret key
select pgp_pub_decrypt(
		pgp_pub_encrypt('Secret msg', dearmor(seckey)),
		dearmor(seckey))
from keytbl where keytbl.id=1;
ERROR:  pgp_encrypt error: Refusing to encrypt with secret key
-- does text-to-bytea works
select pgp_pub_decrypt_bytea(
		pgp_pub_encrypt('Secret msg', dearmor(pubkey)),
		dearmor(seckey))
from keytbl where keytbl.id=1;
 pgp_pub_decrypt_bytea 
-----------------------
 Secret msg
(1 row)

-- and bytea-to-text?
select pgp_pub_decrypt(
		pgp_pub_encrypt_bytea('Secret msg', dearmor(pubkey)),
		dearmor(seckey))
from keytbl where keytbl.id=1;
ERROR:  pgp_decrypt error: Not text data
