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GNU Crypto
full set of Java cryptographic tools

GNU Crypto is a versatile, and provably correct implementation of cryptographic primitives and tools for use by both programmers and end-users.

The algorithms implemented by GNU Crypto include symmetric key ciphers for protecting data, message digests and message authentication codes for proving the integrity of data, digital signature schemes for proving the authenticity of data, and algorithms for generating unguessable pseudo-random numbers. The API is deliberately designed to be low-level, with access to the bare innards of the cryptographic algorithms involved, so more complex libraries and programs can be built.


Heckert gnu.small.png This is a GNU package:gnu-crypto

Hpp-logo.png This is a high priority project


version 2.1.0 (stable)
released on 23 October 2005

Accepts cryptocurrency donations.

VCS Checkout

cvs -z3 co gnu-crypto


Related Projects



Verified by

Verified on


Verified by

Janet Casey

Verified on

19 June 2003

Leaders and contributors

Casey Marshall Maintainer
Raif S. Naffah Maintainer
Werner Koch contributor

Resources and communication

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Mailing List
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Software prerequisites

Required to buildgcj 3.1 or later

This entry (in part or in whole) was last reviewed on 19 June 2018.


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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”.

The copyright and license notices on this page only apply to the text on this page. Any software or copyright-licenses or other similar notices described in this text has its own copyright notice and license, which can usually be found in the distribution or license text itself.