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Unformatted text preview: random numbers a, b Z p-1 respectively, and then send each other g a mod p , g b mod p . (a) What is the secret key which is exchanged between Alice and Bob? g ab mod p . (b) What is the public key of the Die-Hellman cryptosystem? p, g, g a mod p, g b mod p . (c) What is the private key of the Die-Hellman cryptosystem? Either a (Alice uses this) or b (Bob uses this) . 3. The One-Time Pad. Encryption: given a plaintext: 000000000 and the key 011010101 what is the ciphertext? 011010101 Decryption: given a ciphertext: 011001101 and the key 011010101 recover the plaintext? 000011001 Mike Burmester...
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- Fall '09
- Computer Security