passphrases

!--Security is strengthened by employing a PBKDF2 key derivation function.However, the weak passphrases users typically employ are vulnerable to password cracking attack.

安全性是利 en:PBKDF2 导出函数 (en:key derivation function) 来增强的，然而使者采的典型的弱语会被码解攻击。