How to use cryptographic hash in Qt Published April 22, 2015 by Francesco Mondello 0 How to use cryptographic hash in Qt Qt provides a simple but powerfull class to generate cryptographic hashes. QCryptographicHash can be used to generate cryptographic hashes of binary or text data and supports MD4, MD5, SHA-1, SHA-224, SHA-256, SHA-384, and SHA-512 algorithms.