Ceasar cipher

Caesar Cipher

Vigenère cipher

Key: BANAN
Message: VALTECH 

A B C D E F G H I J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

Use the key to encrypt the message 

 V  A  L  T  E  C  H
 B  A  N  A  N  B  A
--------------------
21  0 11 19  4  2  7
 1  0 13  0 13  1  0
--------------------
 W  A  Y  T  R  D  H

Le Chiffre Indéchiffrable

During the american civil war a cipher called The Vigenère was used. The Confederate leadership primarily relied on three key phraces

  1. "Manchester Bluff"
  2. "Complete Victory"
  3. "Come Retribution"

We have managed to come across the following message sent by the Confederate leadership to General Horace Randal at the front

RZQPDIUYTUKEYFLACGGHERFVKM

Find the right key and decrypt the message.

'Indéchiffrable'

We suspect that the following message contains the word 'VALTECH'
Give us the key so we can decrypt future messages from the same source 

KBCTTWFQIWTWSONUNVIUZ