Shift Ciphers Decryption

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Last updated 9:35 PM on 2/27/26
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4 Terms

1
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Step 1

Choose the same K value as with the encryption

2
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Step 2

Convert the letter into the number that matches its order in the alphabet starting from 0, and call this number Y

3
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Step 3

Calculate: X = (Y-K)mod26

4
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Step 4

Convert the number X into a letter that matches its order in the alphabet starting from 0