Expn64v2gcm Work: !new!

: To maintain compatibility with existing frame structures, only the lowest 32 bits of the PN are transmitted in the MACsec Security Tag (SecTAG).

The EXPn64v2GCM mode of operation is based on the counter mode (CTR) and Galois/Counter Mode (GCM) constructions. Here's a simplified overview of the EXPn64v2GCM encryption process: expn64v2gcm work

This turns the block cipher into a stream cipher. Instead of encrypting the data directly, the algorithm encrypts a "counter" value and then performs an XOR operation with the plaintext. This allows for parallel processing, making it significantly faster than older methods. Galois Mode (GMAC): : To maintain compatibility with existing frame structures,