PrismKit加密與資安維吉尼亞密碼維吉尼亞密碼在瀏覽器中執行本機複製連結Markdown使用維吉尼亞、Beaufort 或自動金鑰密碼加密或解密，並以 Kasiski 與重合指數分析推測未知金鑰。凱撒密碼Shift letters with a Caesar, ROT13 or ROT47 cipher, or crack one by ranking all 25 shifts against English letter frequencies.古典密碼Encrypt and decrypt with Atbash, rail fence, affine, Playfair and Bacon ciphers, with the rail zig-zag and Playfair key square shown.