Block Cipher
We write the message in a rectangular block, one row at a t ime, and then read off the columns.
Example:
Example:
To encode the message THIS IS VERY EASY!, write it in a block like this:
T H I S I
S V E R Y
E A S Y !
The coded message is read by looking at the columns, and writing them out like this: TSE HVA IES SRY IY!
To decode it, just write all the code words in a block again, as columns, and then read the message across the rows.
Here's a code for you to solve:
Here's a code for you to solve:
LKU OHR OIT KGH WHE IER DRA ELF ROI LOE OKL OFD