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Loop when necessary in contrib/pgcrypto's pktreader_pull().

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This fixes a scenario in which pgp_sym_decrypt() failed with "Wrong key
or corrupt data" on messages whose length is 6 less than a power of 2.

Per bug #11905 from Connor Penhale.  Fix by Marko Tiikkaja, regression
test case from Jeff Janes.
This commit is contained in:
Tom Lane
2014-11-11 17:22:15 -05:00
parent 39493e4d92
commit ef5a3b957c
3 changed files with 13 additions and 1 deletions
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4
contrib/pgcrypto/sql/pgp-decrypt.sql
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@ -264,3 +264,7 @@ a3nsOzKTXUfS9VyaXo8IrncM6n7fdaXpwba/3tNsAhJG4lDv1k4g9v8Ix2dfv6Rs
-----END PGP MESSAGE-----
'), 'key', 'convert-crlf=1'), 'sha1'), 'hex');
-- expected: 7efefcab38467f7484d6fa43dc86cf5281bd78e2
-- check BUG #11905, problem with messages 6 less than a power of 2.
select pgp_sym_decrypt(pgp_sym_encrypt(repeat('x',65530),'1'),'1') = repeat('x',65530);
-- expected: true