АБВГДЕЖЗИКЛМНОПРСТУФХЦЧШЭЯ ABCDEFGHIKLMNOPQRSTUVWZ Kerckhoffs assumptionKey (of a cryptosystem)Key agreement protocol, key exchange protocol, KEKey certificateKey distribution centerKey distribution protocolKey enciphering key (KEK)Key escrowKey establishment systemKey generatorKey gunKey identifierKey lengthKey life period, key life timeKey lifetimeKey managementKey management systemKey schedulingKey set (of a cryptosystem)Key streamKey systemKey system of a public key cryptosystemKey system of a secret key cryptosystemKey updatingKeyloggerKeystream cipherKeystream, ciphering sequence, key sequenceKnown plaintext attackKnown treat