Ipsec Espah wrote: |
With DES using CBC mode, at what point are the blocks of plaintext run through the encryption algorithm? From what i gather all DES-CBC does is XOR the first 64-bit block of plaintext with a random 64-bit number (IV), and then use the resulting cyphertext to XOR with the next block of plaintext, and then simply repeats that ciphertext block XOR'ed with plaintext block process to the end. It sounds like DES isn't even involved in that encryption process.
One more thing, are symmetric block ciphers the only form of encryption that can use modes like CBC, CFB, ECB, and OFB? |
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