什麼是 凱薩密碼?
免費線上凱薩密碼工具。使用凱薩位移密碼加密或解密文字。
免費線上凱薩密碼工具。使用凱薩位移密碼加密或解密文字。
Enter your text in the input box.
Choose Encrypt or Decrypt mode.
使用滑桿調整位移值,或點選 ROT 預設按鈕。
Toggle "All" to brute-force all 25 shifts.
Use the letter frequency chart to help identify the correct shift.
ROT13 is a Caesar cipher with shift 13. Since the alphabet has 26 letters, ROT13 is self-inverse — applying it twice returns the original text. ROT47 extends the concept to all 94 printable ASCII characters.
Yes, easily. There are only 25 possible shifts, so brute-force reveals all of them instantly. The frequency analysis chart helps identify which shift produces the most natural letter distribution.
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