cryp·​to·​sys·​tem | \ ˌkrip-tō-ˈsi-stəm How to pronounce cryptosystem (audio) \

Definition of cryptosystem

: a method for encoding and decoding messages

Examples of cryptosystem in a Sentence

Recent Examples on the Web

The issues relate to RSA, the ubiquitous encryption algorithm and cryptosystem that helps protect everything from web browsers and VPNs to email and messaging applications. Lily Hay Newman, WIRED, "13-Year-Old Encryption Bugs Still Haunt Apps and IoT," 7 Aug. 2019 If researchers could build a quantum computer that could outperform classical supercomputers, the thinking goes, cryptographers could use a particular algorithm called Shor’s algorithm to render the RSA cryptosystem unsalvageable. Quanta Magazine, "Why Quantum Computers Might Not Break Cryptography," 15 May 2017 For this reason, the RSA cryptosystem, an encryption scheme that derives its security from the difficulty of integer factorization, remains a popular tool for secure communication. Quanta Magazine, "Why Quantum Computers Might Not Break Cryptography," 15 May 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'cryptosystem.' 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 cryptosystem

1949, in the meaning defined above

History and Etymology for cryptosystem

crypto- + system

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Statistics for cryptosystem

Last Updated

20 Aug 2019

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Time Traveler for cryptosystem

The first known use of cryptosystem was in 1949

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What made you want to look up cryptosystem? Please tell us where you read or heard it (including the quote, if possible).


concealment of treason or felony

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