名詞 cryptanalysis:

1. the science of analyzing and deciphering codes and ciphers and cryptograms
   同義詞：cryptanalytics, cryptography, cryptology

crypt.a.nal.y.sis

n.（名詞）
The analysis and deciphering of cryptographic writings or systems.
密碼分析：對密碼書寫或密碼系統(tǒng)的分析和譯解
Also crypt.an.a.lyt.ics [krp.t2n-…-lt.ks] (used with a sing. verb)The study of techniques for deciphering cryptographic writings or systems.
也作 crypt.an.a.lyt.ics [krp.t2n-…-lt.ks] （與單數動詞連用）密碼學：研究譯解密碼書寫或密碼系統(tǒng)技巧的學科

來源：
crypt(ogram)
crypt(ogram)
analysis
analysis

【引伸】
cryptan.alyst
cryptan.alyt.ic