But they wouldn't be able to guess the key to decrypt a ZRTP-encrypted conversation.
Only the agency has the key to decrypt the transmission, and Mr. Porter said that work was done "in an area that is never accessible to the public".
With a code: when data is encrypted, it appears, to anyone without the key to decrypt it, as an unreadable tangle of bits.
Encryption poses a problem for intelligence agencies by scrambling data with a secret code so that even if they, or any other third-party, manages to capture it, they cannot read it — unless they possess the key to decrypt it or have the ability to crack the encryption scheme.
The eventual buyer will get this "map" but not the key to decrypt it, while the money raised will go to a shark research and conservation project devised by TBA21 Academy in collaboration with La Fundación Amigos de la Isla del Coco (Friends of Isla del Coco) and Misión Tiburón (Shark Mission).
In other words, Apple theoretically can't read or decrypt your messages because it's just encrypted gibberish and Apple doesn't have the key to decrypt these messages.
TESLA discloses keys some time after the data has been transmitted (requiring storage of packets), whereas we send the key to decrypt a packet in the preceding packet and hence do not require storage of any (potentially malicious) packets.
The February 5 attack on Hollywood Presbyterian Medical Center in California shined a light on ransomware, a type of computer virus that encrypts a targeted system's data and then demands money in exchange for the key to decrypt the information.
Quantum cryptography uses this feature to send the "keys" to decrypting messages with high security.
"NSA and GCHQ basically have the keys to decrypting mobile communications anywhere in the world, even without the participation of local communication carriers (which, even if not much, acts as some check on intelligence agency behavior).
