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Results tagged with cbc
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user 112092
Cipher block chaining (CBC) is a method for encrypting large amounts of data with a block cipher that can only encrypt fixed length plaintexts. When used with an unpredictable initialization vector (IV), it is secure against chosen plaintext attacks (CPA-secure).
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Does truncating a CBC ciphertext result in a truncated plaintext?
I want to know why in the CBC cipher, if we truncate the first block in the ciphertext then the corresponding plaintext block is truncated in the same way. …
- 85
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Understanding CBC-MAC Algorithm and Nested Encryption
In the CBC-MAC algorithm as given in the image below, I have two questions:
It is said that the CBC-MAC is simply the last block of ciphertext if the message is encrypted using CBC block cipher mode, … and I don't understand what this means
How does encryption with CBC even work for schemes such as this where encryption is nested. …
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