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GNU Nettle
Nettle is a cryptographic library designed to fit any context: in crypto toolkits for object-oriented languages, in applications like LSH or GnuPG, or even in kernel space. Users need to keep track of available algorithms and their properties and variants. The algorithm selection process is dictated by the protocol you want to implement. Also, requirements of applications differ, so an API that fits one application well may be useless for another (which is why so many different cryptographic libraries exist). Nettle avoids this problem by doing one thing, the low-level crypto stuff, and providing a simple but general interface to it. In particular, it doesn't do algorithm selection, memory allocation, or any I/O. However, users can build application- and context-specific interfaces on top of Nettle and share code, testcases, benchmarks, documentation, etc.


User manual included and available in HTML format from

Heckert gnu.small.png This is a GNU package:nettle


Download version 3.1.1 (stable)
released on 24 April 2015

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Leaders and contributors

Niels Moeller Maintainer

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Software prerequisites

This entry (in part or in whole) was last reviewed on 25 April 2015.


Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the page “GNU Free Documentation License”.

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