Another good point: the NSA is allowed to keep encrypted data indefinitely, warrantlessly. Decryptions don't count as data - they're analysis of legally-stored encrypted info.
The A5/1 cipher has been totally pwned, without even needing a crib, but it's still used for voice traffic. The NSA is allowed to store and decrypt all of this, AFAICT, through this loophole.
The A5/1 cipher has been totally pwned, without even needing a crib, but it's still used for voice traffic. The NSA is allowed to store and decrypt all of this, AFAICT, through this loophole.