PrismKit加密與資安古典密碼古典密碼在瀏覽器中執行本機複製連結Markdown使用 Atbash、柵欄、仿射、Playfair 與培根密碼加密與解密，並顯示柵欄鋸齒排列與 Playfair 金鑰方陣。維吉尼亞密碼Encrypt or decrypt with the Vigenère, Beaufort or autokey cipher and guess an unknown key with Kasiski and index-of-coincidence analysis.XOR 密碼XOR text, hex or base64 data with a repeating key, and brute-force single-byte XOR ranked by how much the result looks like English.