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--
-- PGP compression support
--
select pgp_sym_decrypt(dearmor('
-----BEGIN PGP MESSAGE-----
ww0ECQMCsci6AdHnELlh0kQB4jFcVwHMJg0Bulop7m3Mi36s15TAhBo0AnzIrRFrdLVCkKohsS6+
DMcmR53SXfLoDJOv/M8uKj3QSq7oWNIp95pxfA==
=tbSn
-----END PGP MESSAGE-----
'), 'key', 'expect-compress-algo=1');
select pgp_sym_decrypt(
pgp_sym_encrypt('Secret message', 'key', 'compress-algo=0'),
'key', 'expect-compress-algo=0');
select pgp_sym_decrypt(
pgp_sym_encrypt('Secret message', 'key', 'compress-algo=1'),
'key', 'expect-compress-algo=1');
select pgp_sym_decrypt(
pgp_sym_encrypt('Secret message', 'key', 'compress-algo=2'),
'key', 'expect-compress-algo=2');
-- level=0 should turn compression off
select pgp_sym_decrypt(
pgp_sym_encrypt('Secret message', 'key',
'compress-algo=2, compress-level=0'),
'key', 'expect-compress-algo=0');
-- check corner case involving an input string of 16kB, as per bug #16476.
SELECT setseed(0);
WITH random_string AS
(
-- This generates a random string of 16366 bytes. This is chosen
-- as random so that it does not get compressed, and the decompression
-- would work on a string with the same length as the origin, making the
-- test behavior more predictible. lpad() ensures that the generated
-- hexadecimal value is completed by extra zero characters if random()
-- has generated a value strictly lower than 16.
SELECT string_agg(decode(lpad(to_hex((random()*256)::int), 2, '0'), 'hex'), '') as bytes
FROM generate_series(0, 16365)
)
SELECT bytes =
pgp_sym_decrypt_bytea(
pgp_sym_encrypt_bytea(bytes, 'key',
'compress-algo=1,compress-level=1'),
'key', 'expect-compress-algo=1')
AS is_same
FROM random_string;
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