🔐 Vigenère Cipher

Polyalphabetic substitution cipher with keyword repetition

I/J treated as same letter (I/J merged)

Vigenère Matrix Reference (3 columns)

#KEY
AKEY
BLFZ
CMGA
DNHB
EOIC
FPJD
GQKE
HRLF
ISMG
JTNH
KUOI
LVPJ
MWQK
NXRL
OYSM
PZTN
QAUO
RBVP
SCWQ
TDXR
UEYS
VFZT
WGAU
XHBV
YICW
ZJDX

Lookup: row=plaintext letter, column=key letter, intersection=ciphertext letter