A communication channel between a first processor of a receiver and a second processor of a battery assembly is provided. The battery assembly requests a public key from the receiver. The receiver combines the public key with a private key stored in memory to form a first combined public key, applies a first hash function to the first combined public key, stores the resulting first hash value in memory and transmits the public key to the battery assembly. The battery assembly combines the public key with a corresponding private key to form a second combined public key, applies a corresponding hash function to the second combined public key and transmits the resulting second hash value to the receiver. The receiver compares the first hash value to the second hash value and enables operations of the receiver when the first hash value equals the second hash value.
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