Cryptographic synchronization recovery by measuring randomness of decrypted data
Joseph H. Maestas · OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) · 2023
The invention relates to synchronization of encrypted data communication systems and a method which looks for any lack of pattern or intelligent information in the received data and triggers a resynchronization signal based thereon. If the encrypter/decrypter pairs are out of cryptographic synchronization, the received (decrypted) data resembles pseudorandom data. A method and system are provided for detecting such pseudorandom binary data by, for example, ones density. If the data is sufficiently random the system is resynchronized.