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73e2431817
of password-based encryption from RFC2440 (OpenPGP).
The goal of this code is to be more featureful encryption solution
than current encrypt(), which only functionality is running cipher
over data.
Compared to encrypt(), pgp_encrypt() does following:
* It uses the equvialent of random Inital Vector to get cipher
into random state before it processes user data
* Stores SHA-1 of the data into result so any modification
will be detected.
* Remembers if data was text or binary - thus it can decrypt
to/from text data. This was a major nuisance for encrypt().
* Stores info about used algorithms with result, so user needs
not remember them - more user friendly!
* Uses String2Key algorithms (similar to crypt()) with random salt
to generate full-length binary key to be used for encrypting.
* Uses standard format for data - you can feed it to GnuPG, if needed.
Optional features (off by default):
* Can use separate session key - user data will be encrypted
with totally random key, which will be encrypted with S2K
generated key and attached to result.
* Data compression with zlib.
* Can convert between CRLF<->LF line-endings - to get fully
RFC2440-compliant behaviour. This is off by default as
pgcrypto does not know the line-endings of user data.
Interface is simple:
pgp_encrypt(data text, key text) returns bytea
pgp_decrypt(data text, key text) returns text
pgp_encrypt_bytea(data bytea, key text) returns bytea
pgp_decrypt_bytea(data bytea, key text) returns bytea
To change parameters (cipher, compression, mdc):
pgp_encrypt(data text, key text, parms text) returns bytea
pgp_decrypt(data text, key text, parms text) returns text
pgp_encrypt_bytea(data bytea, key text, parms text) returns bytea
pgp_decrypt_bytea(data bytea, key text, parms text) returns bytea
Parameter names I lifted from gpg:
pgp_encrypt('message', 'key', 'compress-algo=1,cipher-algo=aes256')
For text data, pgp_encrypt simply encrypts the PostgreSQL internal data.
This maps to RFC2440 data type 't' - 'extenally specified encoding'.
But this may cause problems if data is dumped and reloaded into database
which as different internal encoding. My next goal is to implement data
type 'u' - which means data is in UTF-8 encoding by converting internal
encoding to UTF-8 and back. And there wont be any compatibility
problems with current code, I think its ok to submit this without UTF-8
encoding by converting internal encoding to UTF-8 and back. And there
wont be any compatibility problems with current code, I think its ok to
submit this without UTF-8 support.
Here is v4 of PGP encrypt. This depends on previously sent
Fortuna-patch, as it uses the px_add_entropy function.
- New function: pgp_key_id() for finding key id's.
- Add SHA1 of user data and key into RNG pools. We need to get
randomness from somewhere, and it is in user best interests
to contribute.
- Regenerate pgp-armor test for SQL_ASCII database.
- Cleanup the key handling so that the pubkey support is less
hackish.
Marko Kreen
212 lines
5.3 KiB
MySQL
212 lines
5.3 KiB
MySQL
-- Adjust this setting to control where the objects get created.
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SET search_path = public;
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CREATE OR REPLACE FUNCTION digest(text, text)
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RETURNS bytea
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AS 'MODULE_PATHNAME', 'pg_digest'
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LANGUAGE 'C' IMMUTABLE STRICT;
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CREATE OR REPLACE FUNCTION digest(bytea, text)
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RETURNS bytea
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AS 'MODULE_PATHNAME', 'pg_digest'
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LANGUAGE 'C' IMMUTABLE STRICT;
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CREATE OR REPLACE FUNCTION digest_exists(text)
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RETURNS bool
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AS 'MODULE_PATHNAME', 'pg_digest_exists'
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LANGUAGE 'C' IMMUTABLE STRICT;
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CREATE OR REPLACE FUNCTION hmac(text, text, text)
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RETURNS bytea
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AS 'MODULE_PATHNAME', 'pg_hmac'
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LANGUAGE 'C' IMMUTABLE STRICT;
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CREATE OR REPLACE FUNCTION hmac(bytea, bytea, text)
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RETURNS bytea
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AS 'MODULE_PATHNAME', 'pg_hmac'
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LANGUAGE 'C' IMMUTABLE STRICT;
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CREATE OR REPLACE FUNCTION hmac_exists(text)
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RETURNS bool
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AS 'MODULE_PATHNAME', 'pg_hmac_exists'
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LANGUAGE 'C' IMMUTABLE STRICT;
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CREATE OR REPLACE FUNCTION crypt(text, text)
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RETURNS text
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AS 'MODULE_PATHNAME', 'pg_crypt'
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LANGUAGE 'C' IMMUTABLE STRICT;
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CREATE OR REPLACE FUNCTION gen_salt(text)
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RETURNS text
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AS 'MODULE_PATHNAME', 'pg_gen_salt'
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LANGUAGE 'C' VOLATILE STRICT;
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CREATE OR REPLACE FUNCTION gen_salt(text, int4)
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RETURNS text
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AS 'MODULE_PATHNAME', 'pg_gen_salt_rounds'
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LANGUAGE 'C' VOLATILE STRICT;
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CREATE OR REPLACE FUNCTION encrypt(bytea, bytea, text)
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RETURNS bytea
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AS 'MODULE_PATHNAME', 'pg_encrypt'
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LANGUAGE 'C' IMMUTABLE STRICT;
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CREATE OR REPLACE FUNCTION decrypt(bytea, bytea, text)
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RETURNS bytea
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AS 'MODULE_PATHNAME', 'pg_decrypt'
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LANGUAGE 'C' IMMUTABLE STRICT;
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CREATE OR REPLACE FUNCTION encrypt_iv(bytea, bytea, bytea, text)
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RETURNS bytea
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AS 'MODULE_PATHNAME', 'pg_encrypt_iv'
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LANGUAGE 'C' IMMUTABLE STRICT;
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CREATE OR REPLACE FUNCTION decrypt_iv(bytea, bytea, bytea, text)
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RETURNS bytea
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AS 'MODULE_PATHNAME', 'pg_decrypt_iv'
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LANGUAGE 'C' IMMUTABLE STRICT;
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CREATE OR REPLACE FUNCTION cipher_exists(text)
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RETURNS bool
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AS 'MODULE_PATHNAME', 'pg_cipher_exists'
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LANGUAGE 'C' IMMUTABLE STRICT;
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--
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-- pgp_sym_encrypt(data, key)
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--
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CREATE OR REPLACE FUNCTION pgp_sym_encrypt(text, text)
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RETURNS bytea
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AS 'MODULE_PATHNAME', 'pgp_sym_encrypt_text'
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LANGUAGE 'C' STRICT;
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CREATE OR REPLACE FUNCTION pgp_sym_encrypt_bytea(bytea, text)
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RETURNS bytea
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AS 'MODULE_PATHNAME', 'pgp_sym_encrypt_bytea'
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LANGUAGE 'C' STRICT;
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--
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-- pgp_sym_encrypt(data, key, args)
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--
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CREATE OR REPLACE FUNCTION pgp_sym_encrypt(text, text, text)
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RETURNS bytea
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AS 'MODULE_PATHNAME', 'pgp_sym_encrypt_text'
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LANGUAGE 'C' STRICT;
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CREATE OR REPLACE FUNCTION pgp_sym_encrypt_bytea(bytea, text, text)
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RETURNS bytea
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AS 'MODULE_PATHNAME', 'pgp_sym_encrypt_bytea'
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LANGUAGE 'C' STRICT;
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--
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-- pgp_sym_decrypt(data, key)
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--
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CREATE OR REPLACE FUNCTION pgp_sym_decrypt(bytea, text)
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RETURNS text
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AS 'MODULE_PATHNAME', 'pgp_sym_decrypt_text'
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LANGUAGE 'C' IMMUTABLE STRICT;
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CREATE OR REPLACE FUNCTION pgp_sym_decrypt_bytea(bytea, text)
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RETURNS bytea
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AS 'MODULE_PATHNAME', 'pgp_sym_decrypt_bytea'
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LANGUAGE 'C' IMMUTABLE STRICT;
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--
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-- pgp_sym_decrypt(data, key, args)
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--
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CREATE OR REPLACE FUNCTION pgp_sym_decrypt(bytea, text, text)
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RETURNS text
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AS 'MODULE_PATHNAME', 'pgp_sym_decrypt_text'
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LANGUAGE 'C' IMMUTABLE STRICT;
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CREATE OR REPLACE FUNCTION pgp_sym_decrypt_bytea(bytea, text, text)
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RETURNS bytea
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AS 'MODULE_PATHNAME', 'pgp_sym_decrypt_bytea'
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LANGUAGE 'C' IMMUTABLE STRICT;
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--
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-- pgp_pub_encrypt(data, key)
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--
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CREATE OR REPLACE FUNCTION pgp_pub_encrypt(text, bytea)
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RETURNS bytea
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AS 'MODULE_PATHNAME', 'pgp_pub_encrypt_text'
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LANGUAGE 'C' STRICT;
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CREATE OR REPLACE FUNCTION pgp_pub_encrypt_bytea(bytea, bytea)
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RETURNS bytea
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AS 'MODULE_PATHNAME', 'pgp_pub_encrypt_bytea'
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LANGUAGE 'C' STRICT;
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--
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-- pgp_pub_encrypt(data, key, args)
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--
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CREATE OR REPLACE FUNCTION pgp_pub_encrypt(text, bytea, text)
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RETURNS bytea
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AS 'MODULE_PATHNAME', 'pgp_pub_encrypt_text'
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LANGUAGE 'C' STRICT;
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CREATE OR REPLACE FUNCTION pgp_pub_encrypt_bytea(bytea, bytea, text)
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RETURNS bytea
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AS 'MODULE_PATHNAME', 'pgp_pub_encrypt_bytea'
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LANGUAGE 'C' STRICT;
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--
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-- pgp_pub_decrypt(data, key)
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--
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CREATE OR REPLACE FUNCTION pgp_pub_decrypt(bytea, bytea)
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RETURNS text
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AS 'MODULE_PATHNAME', 'pgp_pub_decrypt_text'
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LANGUAGE 'C' IMMUTABLE STRICT;
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CREATE OR REPLACE FUNCTION pgp_pub_decrypt_bytea(bytea, bytea)
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RETURNS bytea
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AS 'MODULE_PATHNAME', 'pgp_pub_decrypt_bytea'
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LANGUAGE 'C' IMMUTABLE STRICT;
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--
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-- pgp_pub_decrypt(data, key, psw)
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--
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CREATE OR REPLACE FUNCTION pgp_pub_decrypt(bytea, bytea, text)
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RETURNS text
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AS 'MODULE_PATHNAME', 'pgp_pub_decrypt_text'
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LANGUAGE 'C' IMMUTABLE STRICT;
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CREATE OR REPLACE FUNCTION pgp_pub_decrypt_bytea(bytea, bytea, text)
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RETURNS bytea
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AS 'MODULE_PATHNAME', 'pgp_pub_decrypt_bytea'
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LANGUAGE 'C' IMMUTABLE STRICT;
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--
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-- pgp_pub_decrypt(data, key, psw, arg)
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--
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CREATE OR REPLACE FUNCTION pgp_pub_decrypt(bytea, bytea, text, text)
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RETURNS text
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AS 'MODULE_PATHNAME', 'pgp_pub_decrypt_text'
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LANGUAGE 'C' IMMUTABLE STRICT;
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CREATE OR REPLACE FUNCTION pgp_pub_decrypt_bytea(bytea, bytea, text, text)
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RETURNS bytea
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AS 'MODULE_PATHNAME', 'pgp_pub_decrypt_bytea'
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LANGUAGE 'C' IMMUTABLE STRICT;
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--
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-- PGP key ID
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--
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CREATE OR REPLACE FUNCTION pgp_key_id(bytea)
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RETURNS text
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AS 'MODULE_PATHNAME', 'pgp_key_id_w'
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LANGUAGE 'C' IMMUTABLE STRICT;
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--
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-- pgp armor
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--
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CREATE OR REPLACE FUNCTION armor(bytea)
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RETURNS text
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AS 'MODULE_PATHNAME', 'pg_armor'
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LANGUAGE 'C' IMMUTABLE STRICT;
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CREATE OR REPLACE FUNCTION dearmor(text)
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RETURNS bytea
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AS 'MODULE_PATHNAME', 'pg_dearmor'
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LANGUAGE 'C' IMMUTABLE STRICT;
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