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What pseudo-random block stream is generated by 64-bit OFB with a weak DES key?
Wiki User
∙ 16y ago
With (OFB) output feed back, a random 64-bit number, known as the IV is encrypted with the weak secret key to create the one-time pad. A weak DES secret key is one which is either all 1's, 0's or alternating ones and zeros. The plain text is XOred with as many bits of the generated one-time pad. If a weak key patterns will emerge in the ciphertext. - Eric Appelboom
Wiki User
∙ 16y ago
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