polyalphabetic cipher中文什么意思

多字码密码

• cipher:    n. 1.零〔即0〕。 2.数码，阿 ...
• in cipher:    用密码
• a message in cipher:    密码信

百科释义

A polyalphabetic cipher is any cipher based on substitution, using multiple substitution alphabets. The Vigenère cipher is probably the best-known example of a polyalphabetic cipher, though it is a simplified special case.