BR/EDR Legacy Pairing utilizes the E21 or E22 algorithms based on SAFER+. Device authentication is based on the E1 algorithm, which is also based on SAFER+. Encryption utilizes the E0 algorithm derived from the MasseyRueppel algorithm. There is no provision for cryptographic message integrity. While the CRC provides some integrity protection, it is not considered to provide cryptographic integrity as it can be easily forged.

BR/EDR Legacy Pairing使用基于SAFER+的E21或E22算法。设备认证基于E1算法，也是基于SAFER+的。加密使用从MasseyRueppel算法中派生的E0算法。没有提供加密消息完整性的规定。虽然CRC提供了一定的完整性保护，但它不被认为能提供加密完整性，因为它很容易被伪造。