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| Password-based encryption ： ウィキペディア英語版 |
Password-based cryptography
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).
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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