They may be addressed to an individual decoder or groups of decoders. The block responsible for appending extra bits to the digital data before transmitting. A process in which information is transformed into an equivalent set of values by following a known, predefined mathematical rule or algorithm. Decryption applies the algorithm in reverse to restore the data to its original form. This process modifies a bit stream so that it appears random.
Encryption is used for security purposes.
The sender and receiver must both employ the same encryption method. The mathematical method by which an encryption key is combined with plain text to form encrypted or ciphertext and to return ciphertext to its original plain text form. The Encryption Engine is a component of the Baseband and supports the optional stream cipher encryption and decryption of ACL payloads. Codec was developed by Lucent Technologies and originally created at Bell Labs. The error control is responsible for detection of transmission errors and, where appropriate, for the retransmission.