Ciphertext / 密文
WKH HDJOH RI WKH PLGQLJKW JDWKHUV RQ WKH WRZHU
Shift / 移位数
0
Plaintext / 明文
WKH HDJOH RI WKH PLGQLJKW JDWKHUV RQ WKH WRZHU

E is the most common letter in English. / 英语中 E 出现最多。

Caesar Cipher / 凯撒密码: A substitution cipher where each letter is shifted by N positions in the alphabet. Since there are only 26 letters, you can brute force all N = 0..25 and spot the correct one. Frequency analysis — counting which letters appear most — also gives clues (E is usually most common in English).
一种替换密码,每个字母在字母表中移位 N 位。因为只有 26 个字母,你可以暴力枚举 N=0..25 并找出正确的解。频率分析——统计字母出现次数——也能提供线索(英语中 E 通常出现最多)。

Spell Mastered!

The grimoire's words have resolved into plain speech.
密典中的文字已化作清晰的语言。

"The eagle of the night gathers on the tower"