mirror of
https://github.com/postgres/postgres.git
synced 2025-11-03 09:13:20 +03:00
0d9937d118
Dagfinn Ilmari Mannsåker, reviewed by Shubham Khanna. Some subtractions by me. Discussion: http://postgr.es/m/87le9fmi01.fsf@wibble.ilmari.org
52 lines
1.7 KiB
SQL
52 lines
1.7 KiB
SQL
--
|
|
-- 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 predictable. 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;
|