Themis (software)

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Developer(s)| Cossack Labs
Initial release| 20 May 2015; 10 years ago (2015-05-20)
Repository| https://github.com/cossacklabs/themis
Written in| C (programming language); built-in wrappers for C++, Go (programming language), Objective-C, Swift (programming language), Java (programming language), PHP, Rust (programming language), JavaScript, Ruby (programming language), Python (programming language), WebAssembly
Operating system| Debian, Ubuntu, CentOS, RHEL, macOS, Android (operating system), iOS, Windows (experimental MSYS2 support)
Type| Cryptography Library (computer science)
License| Apache 2.0
Website| www.cossacklabs.com/themis/

Themis (English pronunciation: [ˈθiːmɪs]; from Ancient Greek Themis, a Greek Titans (mythology) described as "the Lady of good counsel") is an Open-source software high-level cryptographic services library for securing data during authentication, storage, messaging, network exchange, etc.[1]

Themis uses OpenSSL, BoringSSL, LibreSSL or native cryptographic libraries (f.e. crypto module on Go) as the source of crypto-primitives.[2] Secure Comparator, an implementation of zero-knowledge proof-based protocol and one of Themis cryptosystems[2] which allows two parties to compare a shared secret without revealing it to potentially dishonest party, is described in a whitepaper[3] authored by Ignat Korchagin and Eugene Pilyankevich.

Themis provides unified compatible APIs across 14 platforms: iOS (Swift, Obj-C), Android (Java, Kotlin), desktop Java, С/С++, Node.js, Python, Ruby, PHP, Go, Rust, WASM.[4]

Themis was created by cryptographer and software engineers from the British Information security Cossack Labs in 2015.[5] The latest update to Themis 0.13.6 was made in November 2020.[6]

OWASP listed[7] Themis as a third party Encryption library recommended for mobile platforms.

In 2020, in the Hacker Noon Noonies contest, Themis became a 2-nd runner-up in a category Best Open Source Project.[8]

## References[edit]

1. ↑ "Themis". Cossack Labs on Github.`{{cite web}}`: CS1 maint: url-status (link)
2. ↑ 2.0 2.1 "Cryptography in Themis". Cossack Labs.`{{cite web}}`: CS1 maint: url-status (link)
3. ↑ Ignat Korchagin, Eugene Pilyankevich. "Secure Comparator: a ZKP-Based Authentication System". Cryptology ePrint Archive.`{{cite web}}`: CS1 maint: url-status (link)
4. ↑ "APIs Themis supports". Cossack Labs.`{{cite web}}`: CS1 maint: url-status (link)
5. ↑ "Introducing Themis". Cossack Labs.`{{cite web}}`: CS1 maint: url-status (link)
6. ↑ "Themis updates and releases". Cossack Labs on Github.`{{cite web}}`: CS1 maint: url-status (link)
7. ↑ "iOS Cryptographic APIs". OWASP MSTG on Github.`{{cite web}}`: CS1 maint: url-status (link)
8. ↑ "Best Open Source Project, 2020". Hacker Noon Noonies.`{{cite web}}`: CS1 maint: url-status (link)

## External links[edit]

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