Secure Password Generator

The tool produces cryptographically secure passwords based on user-defined length and character-set options. It supports uppercase, lowercase, digits, and symbols, with the ability to exclude ambiguous characters. An optional pronounceable mode provides alternative passphrase-style generation. The core logic relies on a cryptographically secure RNG to sample from the chosen alphabet, ensuring high entropy and unpredictability. If pronounceable mode is selected, the generator assembles passwords from statistically suitable syllables to improve memorability while maintaining security. Outputs include the password itself and an entropy estimate in bits, calculated as length × log2(n), where n is the number of allowed characters. This enables quick assessment of resistance to guessing and brute-force attacks. The tool is intended for developers, IT teams, and security practitioners who need on-demand credentials during onboarding, rotation, or emergency access provisioning. Unique value arises from explicit entropy calculation, clear policy checks (length and category requirements), and optional seeds for reproducible testing. Core features include exact-length output, character-set customization, optional exclusion of confusing characters, and optional primality of entropy measurements. Example: length=16, include upper, lower, digits, and symbols yields a high-entropy password suitable for most systems. Use cases include creating initial credentials for new employees, rotating service account passwords, and provisioning temporary access.

This tool does not store passwords, performs local generation, and follows best practices for entropy assessment and policy compliance.
Ideal for security audits, compliance documentation, and rapid credential provisioning in development and production environments.