keystream
noun
keystream is a noun meaning “A stream of random or pseudorandom characters that are combined with the plaintext to produce a ciphertext” (English Wiktionary, September 2026). It is spelled K-E-Y-S-T-R-E-A-M, and it appears about once in every 83 million words in written English (wordfreq, 2021 data). The plural of keystream is keystreams.
What does keystream mean?
noun
- 1
A stream of random or pseudorandom characters that are combined with the plaintext to produce a ciphertext.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Forms of keystream
- keystreams plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
How common is keystream?
Keystream appears about once in every 83 million words in written English, the 290,185th most frequent word form in the list.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
Where does keystream come from?
From key + stream.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).