“GnuPG Hacks”, Linux Journal, March 2006, pa ge 52

OpenSSL: www.openssl.org

Validated FIPS 140-1 and FIPS 140-2 Cryptographic Modules 2006: csrc.nist.gov/cryptval/140-1/1401val2006.htm

Open Source Software Institute: www.oss-institute.org

Wikipedia—Passphrase: www.wikipedia.org/wiki/Passphrase

The Diceware Passphrase Home Page: www.diceware.com