diff options
Diffstat (limited to 'contrib/pgcrypto/README.pgcrypto')
| -rw-r--r-- | contrib/pgcrypto/README.pgcrypto | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/contrib/pgcrypto/README.pgcrypto b/contrib/pgcrypto/README.pgcrypto index 5cacaf875ca..db60df99093 100644 --- a/contrib/pgcrypto/README.pgcrypto +++ b/contrib/pgcrypto/README.pgcrypto @@ -36,13 +36,14 @@ pgcrypto configures itself according to the findings of main PostgreSQL `configure` script. The options that affect it are `--with-zlib` and `--with-openssl`. -Without zlib, the PGP functions will not support compressed data inside -PGP encrypted packets. +When compiled with zlib, PGP encryption functions are able to +compress data before encrypting. -Without OpenSSL, public-key encryption does not work, as pgcrypto does -not yet contain math functions for large integers. +When compiled with OpenSSL there will be more algorithms available. +Also public-key encryption functions will be faster as OpenSSL +has more optimized BIGNUM functions. -There are some other differences with and without OpenSSL: +Summary of functionality with and without OpenSSL: `----------------------------`---------`------------ Functionality built-in OpenSSL @@ -421,7 +422,7 @@ with CRC and additional formatting. Options are named to be similar to GnuPG. Values should be given after an equal sign; separate options from each other with commas. Example: - pgp_sym_encrypt(data, psw, 'compress-also=1, cipher-algo=aes256') + pgp_sym_encrypt(data, psw, 'compress-algo=1, cipher-algo=aes256') All of the options except `convert-crlf` apply only to encrypt functions. Decrypt functions get the parameters from PGP data. @@ -571,7 +572,7 @@ The GNU Privacy Handbook] and other docs on http://www.gnupg.org[] site. ------------------- Those functions only run a cipher over data, they don't have any advanced -features of PGP encryption. In addition, they have some major problems: +features of PGP encryption. Therefore they have some major problems: 1. They use user key directly as cipher key. 2. They don't provide any integrity checking, to see @@ -713,4 +714,4 @@ http://www.cs.ut.ee/~helger/crypto/[]:: Collection of cryptology pointers. -// $PostgreSQL: pgsql/contrib/pgcrypto/README.pgcrypto,v 1.15 2006/07/13 04:15:24 neilc Exp $ +// $PostgreSQL: pgsql/contrib/pgcrypto/README.pgcrypto,v 1.16 2006/07/19 17:05:50 neilc Exp $ |