Homophonic Substitution Cipher
The Homophonic Substitution Cipher is a sophisticated variant of substitution ciphers in which a single plaintext letter can map to multiple possible ciphertext symbols. This reduces the risk of frequency analysis since high-frequency letters do not always produce the same ciphertext character. Unlike simple systems such as the Simple Substitution Cipher, the homophonic approach creates a more uniform statistical distribution of symbols in the ciphertext.