For the 128-bit AES counter, use a 64-bit randomly generated IV and a 64-bit incrementing counter.  That makes it possible to encrypt 2^64 * 16 bytes of data while avoiding counter reuse.  As a result, rekeying is not necessary.
For the 128-bit AES counter, use a 64-bit randomly generated IV and a 64-bit
incrementing counter.  That makes it possible to encrypt 2^64 * 16 bytes of
data while avoiding counter reuse.  As a result, rekeying is not necessary.

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