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/*! # Passwords This crate provides useful tools to generate multiple readable passwords, as well as analyze and score them. ## Generator `PasswordGenerator` can be used for generating passwords which consist optional numbers, lowercase letters, uppercase letters and symbols. ```rust extern crate passwords; use passwords::PasswordGenerator; let pg = PasswordGenerator { length: 8, numbers: true, lowercase_letters: true, uppercase_letters: true, symbols: true, strict: true, }; println!("{}", pg.generate_one().unwrap()); println!("{:?}", pg.generate(5).unwrap()); ``` ## Hasher To enable hashing functions, you need to enable the **crypto** feature. ```toml [dependencies.passwords] version = "*" features = ["crypto"] ``` Then, `bcrypt`, `identify_bcrypt` and `gen_salt` functions in the `hasher` module are available. ```rust,ignore extern crate passwords; let salt = passwords::gen_salt(); let hashed = passwords::bcrypt(10, &salt, "password").unwrap(); assert!(passwords::identify_bcrypt(10, &salt, "password", &hashed).unwrap()); ``` ## Analyzer The `analyze` function in the `analyzer` module can be used to create a `AnalyzedPassword` instance which contains some information about the input password. Typically, we don't want our readable password to contain control characters like BS, LF, CR, etc. Before the analyzer analyzes a password, it filters the password in order to remove its control characters. And after analyzing, the analyzer will return the filtered password. Therefore, you can use this analyzer as a password guard before you store the input password (or generally hash it first and then store) to your database. ```rust extern crate passwords; use passwords::analyzer; let password = "ZYX[$BCkQB中文}%A_3456] H(\rg"; let analyzed = analyzer::analyze(password); assert_eq!("ZYX[$BCkQB中文}%A_3456] H(g", analyzed.password()); // "\r" was filtered assert_eq!(26, analyzed.length()); // Characters' length, instead of that of UTF-8 bytes assert_eq!(2, analyzed.spaces_count()); // Two spaces between "]" and "H" assert_eq!(4, analyzed.numbers_count()); // Numbers are "3456" assert_eq!(2, analyzed.lowercase_letters_count()); // Lowercase letters are "k" and "g" assert_eq!(9, analyzed.uppercase_letters_count()); // Uppercase letters are "ZYX", "BC", "QB", "A" and "H" assert_eq!(7, analyzed.symbols_count()); // Symbols are "[$", "}%", "_", "]" and "(" assert_eq!(2, analyzed.other_characters_count()); // Other characters are "中文". These characters are usually not included on the rainbow table. assert_eq!(2, analyzed.consecutive_count()); // Consecutive repeated characters are " " (two spaces) assert_eq!(2, analyzed.non_consecutive_count()); // Non-consecutive repeated characters are "B" (appears twice) assert_eq!(7, analyzed.progressive_count()); // Progressive characters are "ZYX" and "3456". "BC" is not counted, because its length is only 2, not three or more. ``` You can also check whether a password is too simple and dangerous to use, by looking up a *common passwords table*. If you want to do that, you need to enable the **common-password** feature. ```toml [dependencies.passwords] version = "*" features = ["common-password"] ``` Then, the `is_common_password` function in `analyzer` module and the `is_common` method of a `AnalyzedPassword` instance are available. You should notice that after you enable the **common-password** feature, the time for compiling increases dramatically, because the *common passwords table* will be compiled into the executable binary file as a hardcode array. ## Scorer After analyzing a password, you can use the `score` function in the `scorer` module to score it. ```rust extern crate passwords; use passwords::analyzer; use passwords::scorer; assert_eq!(62f64, scorer::score(&analyzer::analyze("kq4zpz13"))); assert_eq!(100f64, scorer::score(&analyzer::analyze("ZYX[$BCkQB中文}%A_3456] H(\rg"))); if cfg!(feature = "common-password") { assert_eq!(11.2f64, scorer::score(&analyzer::analyze("feelings"))); // "feelings" is common, so the score is punitively the original divided by 5 } else { assert_eq!(56f64, scorer::score(&analyzer::analyze("feelings"))); } ``` A password whose score is, * 0 ~ 20 is very dangerous (may be cracked within few seconds) * 20 ~ 40 is dangerous * 40 ~ 60 is very weak * 60 ~ 80 is weak * 80 ~ 90 is good * 90 ~ 95 is strong * 95 ~ 99 is very strong * 99 ~ 100 is invulnerable */ /// Analyze passwords. pub mod analyzer; mod generator; #[cfg(feature = "crypto")] /// Hash passwords. pub mod hasher; /// Score passwords. pub mod scorer; pub use analyzer::AnalyzedPassword; pub use generator::PasswordGenerator;