Wordlist Password Generator

This tool generates passwords by selecting words from a user-supplied wordlist and applying optional transformations to meet complexity requirements. It is used by security engineers, IT admins, developers, and security-conscious individuals who need passphrases that are easier to remember than random characters but still meet policy entropy. The problem solved is to convert readable word sequences into high-entropy credentials without resorting to random glyph soups.

Core Logic & Features: The system loads a wordlist and applies parameters: word_count (k), min_length and max_length, separator choice, capitalization rules, and optional numeric or symbolic substitutions. Required features include: deterministic or seeded randomness, entropy estimation, input validation, and batch generation. Optional/advanced features include: non-Latin wordlists, per-password length variance, protection against duplicates, and export in multiple formats.

Inputs & Outputs: Inputs include wordlist (list of strings or file path), min_length (chars), max_length (chars), word_count (int), separators (string), capitalize (bool), include_numbers (bool), include_symbols (bool), avoid_duplicates (bool), language (locale), and export_format (string). Sample: wordlist=["alpha","beta","gamma"]; min_length=8; max_length=24; word_count=4; separators="-"; capitalize=true; include_numbers=true; include_symbols=false. Outputs: passwords (array of strings); length (int) per password; entropy_bits (float); sample_output (first few entries) and export_path if requested.

Algorithms & Calculations: Entropy ≈ log2(W^k) + B where W is the effective wordlist size, k is words per password, B is bits for separators, capitalization, and substitutions. For a 4-word password from W=2048 words with 1 separator and 2 capitalization rules, estimate around 88 bits. The tool uses a cryptographically secure RNG, and can optionally apply a seeding seed.

Error & Edge Cases: Invalid wordlist or empty results, min_length > max_length, insufficient words for requested k, unsupported characters in wordlist, external wordlist load failure, or entropy target unattainable with given constraints. Handles duplicates if requested.

Industry/Region & Localization: UTF-8 wordlists allowed; supports locale-specific words; no currency or region-specific constraints; adheres to standard password policy guidance when reporting entropy.

Assumptions & Exclusions: Assumes input wordlist is provided by the user and not transmitted; excludes real-time password testing against external services; not intended to replace hardware-backed keys; not responsible for user-selected weaknesses in wordlists.