Assertion: later version | /r/CapableOf | implement addition
Facets:
value: to the shsh system
type: TRANSITIVE-OBJECT
Source sentences:
text: iOS 5.0 and later versions of iOS implement an addition to the SHSH system, a random number (a cryptographic nonce) in the "APTicket", making it more difficult to perform a replay attack, and thus more difficult to downgrade.