diff options
Diffstat (limited to 'contrib/pgcrypto/README.pgcrypto')
| -rw-r--r-- | contrib/pgcrypto/README.pgcrypto | 42 |
1 files changed, 28 insertions, 14 deletions
diff --git a/contrib/pgcrypto/README.pgcrypto b/contrib/pgcrypto/README.pgcrypto index 8da62b39a21..5cacaf875ca 100644 --- a/contrib/pgcrypto/README.pgcrypto +++ b/contrib/pgcrypto/README.pgcrypto @@ -49,14 +49,14 @@ There are some other differences with and without OpenSSL: ---------------------------------------------------- MD5 yes yes SHA1 yes yes - SHA256/384/512 yes since 0.9.8 + SHA224/256/384/512 yes yes (3) Any other digest algo no yes (1) Blowfish yes yes AES yes yes (2) DES/3DES/CAST5 no yes Raw encryption yes yes PGP Symmetric encryption yes yes - PGP Public-Key encryption no yes + PGP Public-Key encryption yes yes ---------------------------------------------------- 1. Any digest algorithm OpenSSL supports is automatically picked up. @@ -67,6 +67,9 @@ There are some other differences with and without OpenSSL: compiled against older version, it will use built-in AES code, so it has AES always available. +3. SHA2 algorithms were added to OpenSSL in version 0.9.8. For + older versions, pgcrypto will use built-in code. + 2.2. NULL handling ~~~~~~~~~~~~~~~~~~~~ @@ -621,14 +624,24 @@ is equal to encrypt(data, 'fooz', 'bf-cbc/pad:pkcs') -7. Credits +7. Random bytes +----------------- + + gen_random_bytes(count integer) + +Returns `count` cryptographically strong random bytes as bytea value. +There can be maximally 1024 bytes extracted at a time. This is to avoid +draining the randomness generator pool. + + +8. Credits ------------ I have used code from following sources: -`--------------------`-------------------------`---------------------- +`--------------------`-------------------------`------------------------------- Algorithm Author Source origin ----------------------------------------------------------------------- +------------------------------------------------------------------------------- DES crypt() David Burren and others FreeBSD libcrypt MD5 crypt() Poul-Henning Kamp FreeBSD libcrypt Blowfish crypt() Solar Designer www.openwall.com @@ -636,21 +649,22 @@ I have used code from following sources: Rijndael cipher Brian Gladman OpenBSD sys/crypto MD5 and SHA1 WIDE Project KAME kame/sys/crypto SHA256/384/512 Aaron D. Gifford OpenBSD sys/crypto ----------------------------------------------------------------------- + BIGNUM math Michael J. Fromberger dartmouth.edu/~sting/sw/imath +------------------------------------------------------------------------------- -8. Legalese +9. Legalese ------------- * I owe a beer to Poul-Henning. * This product includes software developed by Niels Provos. -9. References/Links ---------------------- +10. References/Links +---------------------- -9.1. Useful reading -~~~~~~~~~~~~~~~~~~~~~ +10.1. Useful reading +~~~~~~~~~~~~~~~~~~~~~~ http://www.gnupg.org/gph/en/manual.html[]:: The GNU Privacy Handbook @@ -668,8 +682,8 @@ http://www.interhack.net/people/cmcurtin/snake-oil-faq.html[]:: Describes good and bad cryptography. -9.2. Technical references -~~~~~~~~~~~~~~~~~~~~~~~~~~~ +10.2. Technical references +~~~~~~~~~~~~~~~~~~~~~~~~~~~~ http://www.ietf.org/rfc/rfc2440.txt[]:: OpenPGP message format @@ -699,4 +713,4 @@ http://www.cs.ut.ee/~helger/crypto/[]:: Collection of cryptology pointers. -// $PostgreSQL: pgsql/contrib/pgcrypto/README.pgcrypto,v 1.14 2005/11/03 02:54:07 tgl Exp $ +// $PostgreSQL: pgsql/contrib/pgcrypto/README.pgcrypto,v 1.15 2006/07/13 04:15:24 neilc Exp $ |