cipher
gb/sˈaɪfɚ/ us/sˈaɪfɚ/
B2
英語
rejtjel, titkosírás, rejtjeles üzenet, titkosító algoritmus, rejtjelező algoritmus, jelentéktelen figura, üres figura, cypher, freestyle kör, rejtjelez, titkosít, nulla
名詞
B2
1
rejtjel
B2
titkosírás
B2
用法パターン：
a cipher; use [a] cipher; write [something] in cipher
The spies used a simple cipher to send messages over the radio.
A kémek egy egyszerű rejtjelet használtak, hogy rádión üzenjenek.
The cipher replaced each letter with the one three places later in the alphabet.
Ez a rejtjel minden betűt az ábécében utána következő harmadik betűvel helyettesített.
Without the key, the cipher was very hard to break.
学習者向け例文
We made a cipher for our secret club.
Készítettünk egy rejtjelet a titkos klubunk számára.
This cipher changes A to D.
Ez a rejtjel az A betűt D-re cseréli.
よくある間違い：
Do not confuse cipher with decipher: decipher means to read or solve a cipher.
意味
secret code system
コロケーション
secret cipher
|simple cipher
|complex cipher
|substitution cipher
|cipher key
|break a cipher
|crack a cipher
|solve a cipher
|use a cipher
|write in cipher
類義語
code (broader and more common in everyday English)
|
cryptosystem (more technical and usually used in modern cryptography)
対義語
plain language (ordinary understandable language, not secret writing)
|
plaintext (the readable original text before encryption)
テーマ
communication
|secrecy
|language
|puzzles
定義
A secret code used to hide the meaning of a message.
A system of secret writing that changes letters, numbers, or words so that only someone with the method or key can read the message.
名詞
B2
2
rejtjel
B2
用法パターン：
solve [a] cipher; [a] cipher says [something]
The treasure map had a cipher at the bottom.
A kincses térkép alján egy rejtjeles üzenet volt.
She solved the cipher and discovered the hidden password.
Megfejtette a rejtjeles üzenetet, és felfedezte az elrejtett jelszót.
A strange cipher was carved into the stone wall.
学習者向け例文
Can you solve this cipher?
Meg tudod fejteni ezt a rejtjelet?
The cipher says, “Open the door.”
A rejtjeles üzenet azt mondja: „Nyisd ki az ajtót.”
よくある間違い：
Cipher can mean either the secret-code system or the coded message itself; context decides.
意味
coded message or puzzle
コロケーション
solve a cipher
|decode a cipher
|hidden cipher
|mysterious cipher
|cipher puzzle
|cipher on a map
|cipher in a notebook
類義語
cryptogram (often a puzzle or short text written in code)
|
coded message (clearer and less technical)
対義語
plaintext (a message in its readable, uncoded form)
テーマ
puzzles
|communication
|secrecy
定義
A hidden message that you must solve to read.
A message, text, or puzzle written using a secret code.
名詞
C1
TECHNICAL
3
用法パターン：
[type] cipher; [software/system] uses [a] cipher
The security library supports several modern ciphers.
A biztonsági könyvtár több modern titkosító algoritmust támogat.
A weak cipher can leave stored data exposed to attackers.
Egy gyenge titkosító algoritmus miatt a tárolt adatok hozzáférhetővé válhatnak a támadók számára.
Modern ciphers are designed to resist known methods of attack.
学習者向け例文
This program uses a strong cipher.
Ez a program erős titkosító algoritmust használ.
Old ciphers may not be safe today.
A régi titkosító algoritmusok ma már nem biztos, hogy biztonságosak.
よくある間違い：
A cipher is not the same as a password or key; the key is used with the cipher.
意味
encryption algorithm
コロケーション
modern cipher
|strong cipher
|weak cipher
|symmetric cipher
|block cipher
|stream cipher
|cipher algorithm
|cipher implementation
|cipher mode
|encryption cipher
類義語
encryption algorithm (more explicit and common in general technical explanation)
|
cryptographic algorithm (broader; can include algorithms not used directly for encryption)
テーマ
cybersecurity
|computing
|technology
|cryptography
定義
In computer security, a cipher is the method that turns readable data into protected data and back again.
An algorithm used to encrypt and decrypt digital information, especially in computer security.
名詞
C2
FORMAL
4
用法パターン：
[someone/something] is [a] cipher; [a] mere cipher
To many voters, the new minister seemed like a cipher with no clear views of her own.
Sok választó szemében az új miniszter jelentéktelen figurának tűnt, akinek nem voltak saját, világos nézetei.
In the novel, the husband is almost a cipher, present but emotionally blank.
A regényben a férj szinte csak egy üres figura: jelen van, de érzelmileg üres.
The committee treated the local residents as ciphers rather than as people with real concerns.
学習者向け例文
He felt like a cipher in the huge company.
Úgy érezte, csak egy jelentéktelen figura a hatalmas cégnél.
She was not a cipher; she had real power.
Nem volt jelentéktelen figura; valódi hatalma volt.
よくある間違い：
This sense is formal and dismissive; in everyday speech, people usually say nobody or nonentity.
意味
unimportant person or thing
コロケーション
mere cipher
|political cipher
|social cipher
|remain a cipher
|seem like a cipher
|treated as a cipher
類義語
nonentity (strongly suggests someone has no importance)
|
nobody (informal and more direct)
|
figurehead (has a title or visible role but little real power)
対義語
somebody (informal word for an important or influential person)
|
power broker (someone with real influence behind decisions)
テーマ
society
|politics
|people
|evaluation
定義
A person or thing that seems unimportant or has no real influence.
A person, organization, or thing that seems to have no real power, importance, or individuality.
名詞
C1
SLANG
5
cypher
C1
用法パターン：
a cipher; join [a] cipher; perform in [a] cipher
Local rappers joined the cipher and traded freestyle verses.
A helyi rapperek beálltak a cypherbe, és freestyle sorokkal felelgettek egymásnak.
The dancers formed a cipher in the middle of the room.
A táncosok a szoba közepén cyphert alakítottak.
The video shows a late-night cipher outside the club.
学習者向け例文
They formed a rap cipher.
Egy rap cyphert alkottak.
She danced in the cipher.
A cypherben táncolt.
よくある間違い：
This sense is often spelled cypher, especially in hip-hop contexts.
意味
freestyle performance circle
コロケーション
rap cipher
|freestyle cipher
|hip-hop cipher
|dance cipher
|join a cipher
|form a cipher
|perform in a cipher
|cipher circle
類義語
cypher (more common spelling for this hip-hop sense)
|
freestyle circle (clear descriptive phrase, less established as a term)
テーマ
music
|hip_hop
|dance
|performance
定義
A circle where hip-hop performers take turns rapping, beatboxing, or dancing.
An informal circle or gathering in which rappers, beatboxers, or dancers take turns performing, especially freestyle.
動詞
C2
TECHNICAL
6
用法パターン：
cipher [a message/text]; cipher [something] with [a key]
The instructions explain how to cipher a message by shifting each letter three places.
Az útmutató elmagyarázza, hogyan lehet egy üzenetet úgy rejtjelezni, hogy minden betűt három hellyel eltolunk.
Before sending the report, the operator ciphered the text with a daily key.
Mielőtt elküldte a jelentést, a kezelő napi kulccsal rejtjelezte a szöveget.
The classroom tool can cipher short messages and then decode them again.
学習者向け例文
They ciphered the note before sending it.
A cetlit elküldés előtt rejtjelezték.
Can you cipher this message?
Tudod rejtjelezni ezt az üzenetet?
よくある間違い：
The verb cipher is uncommon in modern English; encrypt, encode, or encipher is usually more natural.
意味
encode in secret code
コロケーション
cipher a message
|cipher the text
|cipher a note
|cipher with a key
|cipher and decipher
類義語
encrypt (more common for digital data)
|
encode (broader; does not always mean secret)
|
encipher (more precise but also formal or technical)
対義語
decipher (to read or solve a coded message)
|
decrypt (to convert encrypted digital data back into readable form)
テーマ
communication
|secrecy
|cybersecurity
|writing
定義
To change a message into a secret code.
To write or convert a message into a cipher; to encrypt or encode it.
名詞
C2
ARCHAIC
7
nulla
A1
用法パターン：
a cipher; a row of ciphers
Some eighteenth-century arithmetic books call zero a cipher.
Néhány 18. századi számtankönyv a nullát „cipher”-nek nevezi.
The ledger showed a one followed by three ciphers.
A főkönyvben egy egyes után három nulla állt.
In this old text, cipher simply means the numeral 0.
学習者向け例文
In old books, cipher can mean zero.
Régi könyvekben a cipher jelentheti a nullát.
よくある間違い：
In modern English, say zero, not cipher, unless you are discussing older or literary usage.
意味
zero numeral
コロケーション
a row of ciphers
|a cipher after a number
|nought and cipher
類義語
zero (the normal modern word)
|
nought (chiefly British or old-fashioned in many contexts)
対義語
nonzero number (any number other than zero)
テーマ
numbers
|mathematics
|history
定義
In old-fashioned English, cipher can mean zero.
The numeral 0; a zero.
文法
辞書形
cipher
IPA
GB/sˈaɪfɚ/
US/sˈaɪfɚ/
音節・強勢
cipher （1音節）
Stress on 1st syllable (cipher)
活用形
Noun
- Base: cipher
- Plural: cipher, ciphers
Verb
- Base: cipher
- 3rd Person Singular: ciphers
- Present Participle: ciphering
- Past: ciphered
表現
block cipher
1/blˈɑk sˈaɪfɚ/
fixed phrase
technical
fixed-block encryption cipher
A method that encrypts chunks of data of a fixed size.
例文
- AES is a widely used block cipher.
- A block cipher needs a mode of operation to handle messages longer than one block.
- The system used a block cipher to encrypt stored records.
学習者向け例文
- AES is a block cipher.
- A block cipher works on blocks of data.
caesar cipher
1/sˈizɚ sˈaɪfɚ/
fixed phrase
simple letter-shift cipher
A simple code that shifts every letter by the same number of places.
例文
- Students often learn the Caesar cipher by shifting each letter three places.
- A Caesar cipher is easy to break because there are only a few possible shifts.
- The puzzle used a Caesar cipher, so B stood for E.
学習者向け例文
- We used a Caesar cipher in class.
- In this Caesar cipher, A becomes D.
cipher key
1/sˈaɪfɚ kˈi/
fixed phrase
key for a cipher
The information you need to make or read a coded message.
例文
- The detective found the cipher key hidden inside the diary.
- Without the cipher key, the coded letter made no sense.
- The escape-room team needed a cipher key to read the final clue.
学習者向け例文
- We need the cipher key to read this note.
- The cipher key says 1 means A.
cipher suite
1/sˈaɪfɚ swˈit/
fixed phrase
technical
set of security algorithms
A group of security methods that a browser and server agree to use.
例文
- The server was configured to reject outdated cipher suites.
- During the handshake, the browser and server choose a compatible cipher suite.
- Security auditors recommended disabling several weak cipher suites.
学習者向け例文
- The server supports modern cipher suites.
- Old cipher suites can be unsafe.
ciphertext
1/sˈaɪfɚtˌɛkst/
fixed phrase
technical
encrypted text or data
Data that has been changed into unreadable encrypted form.
例文
- The program converts the password into ciphertext before storing it.
- Anyone who intercepted the file would see only ciphertext.
- The attacker had the ciphertext but not the key needed to decrypt it.
学習者向け例文
- Ciphertext is not easy to read.
- The app turns the message into ciphertext.
in cipher
1/ˈɪn sˈaɪfɚ/
fixed phrase
formal
written in code
Written in a secret code.
例文
- The letter was written in cipher and could not be read without the key.
- Several pages of the diary were in cipher.
- The ambassador sent the warning in cipher.
学習者向け例文
- The note is in cipher.
- They wrote the message in cipher.
stream cipher
1/stɹˈim sˈaɪfɚ/
fixed phrase
technical
continuous-data encryption cipher
A method that encrypts data continuously instead of in fixed blocks.
例文
- A stream cipher can be efficient for real-time communication.
- The protocol once relied on a stream cipher that is now considered weak.
- Unlike a block cipher, a stream cipher processes data continuously.
学習者向け例文
- A stream cipher works on a flow of data.
- Some stream ciphers are very fast.
substitution cipher
1/sˌʌbstɪtˈuʃən sˈaɪfɚ/
fixed phrase
technical
code using symbol replacement
A simple code where each letter or group of letters in a message is always changed into another letter or group of letters.
例文
- The Caesar cipher is a basic substitution cipher.
- In a substitution cipher, frequency analysis can help break the code.
- The puzzle used a simple substitution cipher to hide the message.
substitution cipher
1/sˌʌbstɪtˈuʃən sˈaɪfɚ/
fixed phrase
replacement-based cipher
A code that hides a message by replacing each letter or symbol with another one.
例文
- The newspaper puzzle was a substitution cipher with a different symbol for every letter.
- Frequency analysis can help solve a simple substitution cipher.
- She created a substitution cipher for the escape-room clue.
学習者向け例文
- This substitution cipher uses numbers for letters.
- We solved the substitution cipher together.