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( 1 point ) This question concerns block cipher padding. Suppose the block cipher has a block size of 1 8 bytes. A certain message
point This question concerns block cipher padding. Suppose the block cipher has a block size of bytes.
A certain message ends with a partial block which is bytes. We must reversibly pad out the message to use
some block cipher modes, such as CBC even if the last block is full
Consider the following padding strategy.
Append a single byte with value and then as many zero bytes as required to make the overall length a
multiple of
Suppose the final possibly partial block of the message is x in hexadecimal. Write out the
complete final block in hexadecimal. Please do not put a leading as this has been written already.
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