Bcrypt. Storing passwords.

http://dustwell.com/how-to-handle-passwords-bcrypt.html

More on this:

http://stackoverflow.com/questions/1054022/best-way-to-store-password-in-database
http://stackoverflow.com/questions/420843/how-does-password-salt-help-against-a-rainbow-table-attack
http://stackoverflow.com/questions/568657/is-it-ever-ok-to-store-password-in-plain-text-in-a-php-variable-or-php-constant
http://stackoverflow.com/questions/674904/salting-your-password-best-practices
http://stackoverflow.com/questions/270485/password-management-best-practices-soup-to-nuts-not-just-storage-or-generation
http://stackoverflow.com/questions/258299/what-is-the-best-way-to-keep-passwords-configurable-without-having-them-too-eas
http://stackoverflow.com/questions/947618/how-to-best-store-user-information-and-user-login-and-password
http://security.stackexchange.com/questions/211/how-to-securely-hash-passwords
http://stackoverflow.com/questions/947618/how-to-best-store-user-information-and-user-login-and-password
http://en.wikipedia.org/wiki/Rainbow_table
http://en.wikipedia.org/wiki/Salt_(cryptography)

.NET related:
http://security.stackexchange.com/questions/4781/do-any-security-experts-recommend-bcrypt-for-password-storage
http://msdn.microsoft.com/ru-ru/library/system.security.cryptography.sha256.aspx
http://stackoverflow.com/questions/4329909/hashing-passwords-with-md5-or-sha-256-c-sharp
http://www.codeproject.com/Articles/475262/UseplusBCryptplustoplusHashplusYourplusPasswords-3
http://stackoverflow.com/questions/5393803/can-someone-explain-how-bcrypt-verifies-a-hash