passwdqc 是一个密码强度检查和策略增加工具集。包含一个可选的 PAM 模块 (pam_passwdqc) 和命令行工具 (pwqcheck and pwqgen) 以及开发库 (libpasswdqc).
On systems with PAM, pam_passwdqc is normally invoked on password changes by programs such as passwd(1). It is capable of checking password or passphrase strength, enforcing a policy, and offering randomly-generated passphrases, with all of these features being optional and easily (re-)configurable. pwqcheck and pwqgen are standalone password/passphrase strength checking and random passphrase generator programs, respectively, and are usable from scripts. libpasswdqc is the underlying library, which may also be used from third-party programs.
