Bifid Cipher

3.5K 28 3 
                                    

                                              
Type: Substitution
CIPHER: First column and firs row contains numbers while the rest is letters)
    A B C D E
A  A B C D E
B  F G H J K
C  L M N O P
D  Q R S T U
E  V W X Y Z
Ciphertext: CB CD CC BD AA ED
Plaintext: M O N D A Y
CODES AND CIPHERS.Dove le storie prendono vita. Scoprilo ora