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Using RR to compute pseudo-hoa privacy keygen token = First (64, Kcn(home address set to all zeros | nonce | 2)) Kpm = SHA1 (privacy keygen token | care-of keygen token) pseudo home address = string XOR HoA String = First (128, HMAC_SHA1 (Kpm, (care-of address | Home nonce index | Care-of nonce index))) |