"Crypto" – A Java™ Password Generator

"Crypto" is a compact software tool that synthesizes sets of character sequences of arbitrary length based on a single keyword. The underlying algorithm is deterministic; therefore, the output sequences are not randomly generated but can be exactly reproduced by re-processing the same keyword.

The primary purpose of this software is to serve as a password generator, deriving multiple complex passwords from one master password. Since the sequences are generated during runtime and never stored on disk, using this software is inherently secure.

Users should keep in mind that the cryptographic strength depends on the length and complexity of the input string, rather than the length of the output. A 30-character password from a single-letter input would be extremely weak.