ciphertext

noun
ci·​pher·​text | \ ˈsī-fər-ˌtekst How to pronounce ciphertext (audio) \

Definition of ciphertext

: the enciphered form of a text or of its elements — compare plaintext

Examples of ciphertext in a Sentence

Recent Examples on the Web The converted letters would then be transcribed to derive the ciphertext. Dan Goodin, Ars Technica, "Rusty but intact: Nazi Enigma cipher machine found in Baltic Sea," 4 Dec. 2020 Rather than send voters home with a binder full of hexadecimal gibberish, the computer would print the ciphertext as something much smaller: a hash code, much like how a URL is shortened into a Bit.ly. Benjamin Wofford, Wired, "A Texas County Clerk’s Bold Crusade to Transform How We Vote," 15 Sep. 2020 At its most basic, encryption is the act of converting plaintext (like a credit card number) into unintelligible ciphertext using a very large, random number called a key. Andrew Grotto For Cnn Business Perspectives, CNN, "Why unlocking Apple iPhones for law enforcement isn't the answer," 28 Jan. 2020 Anyone with the key can convert the ciphertext back to plaintext. Andrew Grotto For Cnn Business Perspectives, CNN, "Why unlocking Apple iPhones for law enforcement isn't the answer," 28 Jan. 2020 The researchers explained: Given a pair of correct and faulty ciphertext on the same plaintext, this attack is able to recover the full 128-bit AES key with a computational complexity of only 232+256 encryptions on average. Dan Goodin, Ars Technica, "Intel’s SGX coughs up crypto keys when scientists tweak CPU voltage," 10 Dec. 2019 The vulnerabilities allow attackers to exfiltrate email plaintexts by embedding the previously obtained ciphertext into unviewable parts of an email and combining it with HTML coding. Dan Goodin, Ars Technica, "Decade-old Efail attack can decrypt previously obtained encrypted emails," 14 May 2018 The new email would embed portions of the ciphertext in places that often aren't displayed by Thunderbird, Mail, Outlook, and more than two-dozen other email programs. Dan Goodin, Ars Technica, "Decade-old Efail attack can decrypt previously obtained encrypted emails," 14 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'ciphertext.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of ciphertext

1939, in the meaning defined above

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Time Traveler for ciphertext

Time Traveler

The first known use of ciphertext was in 1939

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Last Updated

20 Dec 2020

Cite this Entry

“Ciphertext.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ciphertext. Accessed 15 Jan. 2021.

More from Merriam-Webster on ciphertext

Britannica.com: Encyclopedia article about ciphertext

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