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Cipher Feedback Mode, CFB, is a self-synchronizing stream cipher which is very similar to CBC performed in reverse. Since OpenSSL supports it, we can easily plug it into the existing cipher selection code without any need for infrastructure changes. This patch was simultaneously submitted by Umar Hayat and Vladyslav Nebozhyn, the latter whom suggested the feauture. The committed patch is Umar's version. Author: Umar Hayat <postgresql.wizard@gmail.com> Reviewed-by: Daniel Gustafsson <daniel@yesql.se> Reviewed-by: Álvaro Herrera <alvherre@alvh.no-ip.org> Discussion: https://postgr.es/m/CAPBGcbxo9ASzq14VTpQp3mnUJ5omdgTWUJOvWV0L6nNigWE5jw@mail.gmail.com
126 lines
3.9 KiB
SQL
126 lines
3.9 KiB
SQL
--
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-- AES cipher (aka Rijndael-128, -192, or -256)
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--
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-- some standard Rijndael testvalues
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SELECT encrypt(
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'\x00112233445566778899aabbccddeeff',
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'\x000102030405060708090a0b0c0d0e0f',
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'aes-ecb/pad:none');
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SELECT encrypt(
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'\x00112233445566778899aabbccddeeff',
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'\x000102030405060708090a0b0c0d0e0f1011121314151617',
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'aes-ecb/pad:none');
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SELECT encrypt(
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'\x00112233445566778899aabbccddeeff',
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'\x000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f',
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'aes-ecb/pad:none');
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-- cbc
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SELECT encrypt(
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'\x00112233445566778899aabbccddeeff',
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'\x000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f',
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'aes-cbc/pad:none');
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-- without padding, input not multiple of block size
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SELECT encrypt(
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'\x00112233445566778899aabbccddeeff00',
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'\x000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f',
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'aes-cbc/pad:none');
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-- key padding
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SELECT encrypt(
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'\x0011223344',
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'\x000102030405',
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'aes-cbc');
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SELECT encrypt(
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'\x0011223344',
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'\x000102030405060708090a0b0c0d0e0f10111213',
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'aes-cbc');
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SELECT encrypt(
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'\x0011223344',
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'\x000102030405060708090a0b0c0d0e0f101112131415161718191a1b',
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'aes-cbc');
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-- empty data
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select encrypt('', 'foo', 'aes');
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-- 10 bytes key
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select encrypt('foo', '0123456789', 'aes');
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-- 22 bytes key
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select encrypt('foo', '0123456789012345678901', 'aes');
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-- decrypt
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select encode(decrypt(encrypt('foo', '0123456', 'aes'), '0123456', 'aes'), 'escape');
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-- data not multiple of block size
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select encode(decrypt(encrypt('foo', '0123456', 'aes') || '\x00'::bytea, '0123456', 'aes'), 'escape');
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-- bad padding
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-- (The input value is the result of encrypt_iv('abcdefghijklmnopqrstuvwxyz', '0123456', 'abcd', 'aes')
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-- with the 16th byte changed (s/db/eb/) to corrupt the padding of the last block.)
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select encode(decrypt_iv('\xa21a9c15231465964e3396d32095e67eb52bab05f556a581621dee1b85385789', '0123456', 'abcd', 'aes'), 'escape');
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-- iv
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select encrypt_iv('foo', '0123456', 'abcd', 'aes');
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select encode(decrypt_iv('\x2c24cb7da91d6d5699801268b0f5adad', '0123456', 'abcd', 'aes'), 'escape');
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-- long message
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select encrypt('Lets try a longer message.', '0123456789', 'aes');
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select encode(decrypt(encrypt('Lets try a longer message.', '0123456789', 'aes'), '0123456789', 'aes'), 'escape');
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-- cfb
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SELECT encrypt(
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'\x00112233445566778899aabbccddeeff',
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'\x000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f',
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'aes-cfb/pad:none');
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-- without padding, input not multiple of block size
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SELECT encrypt(
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'\x00112233445566778899aabbccddeeff00',
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'\x000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f',
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'aes-cfb/pad:none');
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-- key padding
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SELECT encrypt(
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'\x0011223344',
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'\x000102030405',
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'aes-cfb');
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SELECT encrypt(
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'\x0011223344',
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'\x000102030405060708090a0b0c0d0e0f10111213',
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'aes-cfb');
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SELECT encrypt(
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'\x0011223344',
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'\x000102030405060708090a0b0c0d0e0f101112131415161718191a1b',
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'aes-cfb');
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-- empty data
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select encrypt('', 'foo', 'aes-cfb');
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-- 10 bytes key
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select encrypt('foo', '0123456789', 'aes-cfb');
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-- 22 bytes key
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select encrypt('foo', '0123456789012345678901', 'aes-cfb');
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-- decrypt
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select encode(decrypt(encrypt('foo', '0123456', 'aes-cfb'), '0123456', 'aes-cfb'), 'escape');
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-- data not multiple of block size
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select encode(decrypt(encrypt('foo', '0123456', 'aes-cfb') || '\x00'::bytea, '0123456', 'aes-cfb'), 'escape');
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-- bad padding
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-- (The input value is the result of encrypt_iv('abcdefghijklmnopqrstuvwxyz', '0123456', 'abcd', 'aes-cfb')
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-- with the 16th byte changed (s/c5/d5/) to corrupt the padding of the last block.)
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select encode(decrypt_iv('\xf9ad6817cb58d31dd9ba6571fbc4f55d56f65b631f0f437cb828', '0123456', 'abcd', 'aes-cfb'), 'escape');
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-- iv
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select encrypt_iv('foo', '0123456', 'abcd', 'aes-cfb');
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select encode(decrypt_iv('\xfea064', '0123456', 'abcd', 'aes-cfb'), 'escape');
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-- long message
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select encrypt('Lets try a longer message.', '0123456789', 'aes-cfb');
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select encode(decrypt(encrypt('Lets try a longer message.', '0123456789', 'aes-cfb'), '0123456789', 'aes-cfb'), 'escape');
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