Your IP: 38.107.179.230 United States Near: United States

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This article does not cite any references or sources. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. (December 2009) Find sources: "Password-based cryptography" – news · books · scholar · images This article is an orphan, as few or no other articles link to it. Please introduce links to this page from related articles; suggestions are available. (October 2008) Password-based cryptography generally refers to two distinct classes of methods: Single-party methods Multi-party methods Single party 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). Multi-party methods 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, but these have generally been subject to eavesdropping and/or brute-force attacks on the password. See also Password Passphrase Password-authenticated key agreement