A cryptographically secure pseudorandom number generator cli tool printing in a wide variety of byte encodings (hex, base64,..) and for many programming languages (c, java, c#, php, etc.) using NIST SP800-90Ar1 HMAC-DRBG. Supports external seeding from various true random services.

Arbitrary base encoding & decoding

General utility program written in Java. Create, open and extract compressed, password encrypted and Base32 encoded archive files. Create and read different barcodes.

Multibase Encoder & Decoder

Token generator for 2 factor authentication (Android application) using time-based Keyed-Hash Message Authentication Codes

Utilities for encoding and decoding the Base64, Base32, Extended-hex Base32 and Base16 representation of binary data.

A sum and multiplication calculator for numbers in binary to base64, that operates within the base (doesn't convert before operating) and checks if the result is correct.

Utility methods & helping classes for Java development