Last Updated：2025/11/21
Sentence
考古学者は商人の古い手紙を解読するために置換暗号を用いた。
Quizzes for review
The archaeologist used a substitution cipher to decode the merchant's ancient letters.
See correct answer
The archaeologist used a substitution cipher to decode the merchant's ancient letters.
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Related words
substitution cipher
Noun
(cryptography)
A
method
of
encryption
by
which
units
of
plaintext
are
substituted
with
ciphertext
according
to
a
regular
system;
the
"units"
may
be
single
letters
(the
most
common),
pairs
of
letters,
triplets
of
letters,
mixtures
of
the
above,
and
so
forth.
The
receiver
deciphers
the
text
by
performing
an
inverse
substitution.
Japanese Meaning
置換暗号：平文の各単位（単一文字、文字の組み合わせなど）を一定の規則に従って対応する暗号文の単位に置き換える暗号化手法 / 暗号解読：受信者は逆の置換操作を行うことで元の平文を復元できる方式
Related Words
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