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Reviews to:
Date: Saturday, 22. June 2019
Author: 訪客
Review:
It's OK http://xnxx.zone/ xnxxa GSM networks are secured by shared secrets. A unique cryptographic key is issued to each subscriber and embedded in their phone's SIM card; a copy of that key is held by the network allowing mutual authentication by symmetric encryption (the same key is used at both ends).
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