Password-based cryptography Password-based cryptography Password-based cryptography generally refers to two distinct classes of methods: Some systems attempt to derive a cryptographic key directly from a password. However, such practice is generally ill-advised when there is a threat of brute-force attack. Techniques to mitigate such attack include passphrases and iterated (deliberately slow) password-based key derivation functions such as PBKDF2 (RFC 2898). Password-authenticated key agreement systems allow two or more parties that agree on a password (or password-related data) to derive shared keys without exposing the password or keys to network attack. Earlier generations of challenge-response authentication systems have also been used with passwords,
What Matters Most What Matters Most What Matters Most is the thirty-third studio album by Barbra Streisand. The album is Streisand's collection of songs by her longtime friends Alan Bergman and Marilyn Bergman. Streisand produced the album herself. The first disc contains Bergman songs not previously recorded by Streisand, while the second disc contains previously recorded Bergman songs. On November 30, 2011 the album received a nomination in the 54th Grammy Awards for Best Traditional Pop Vocal Album.The album sold 68,000 in United States in the first week and a total of 210,000 copies (as of July 2012). In promotion of the album,