wolfSSL - Product Downloads


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Please Contact Us if you are downloading this as an evaluation and need evaluation support. For additional downloads, including yaSSL (C++), and our Java SSL Provider, see the More Downloads page. If you need the COMMERCIALLY LICENSED versions, please contact us at facts@wolfssl.com.


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This form allows you to download the most recent stable open source (GPLv2/GPLv3) versions of both wolfSSL and wolfSSL JNI. If your project cannot tolerate the terms of the GPLv2/GPLv3, please contact us to learn more about our commercial license.

For users looking to download the wolfCrypt embedded crypto engine, this is included in the wolfSSL package below.


(SHA256: f61201924bb02cd75c61166face8fc05b256fe1ce975273050b1b236158f937f)

wolfSSL FIPS Ready is our FIPS specific cryptography code base which you can enable and build into your application. This FIPS-READY version includes all of the code you need to be ready to move forward with the FIPS validation process. wolfSSL FIPS Ready supports a validated entropy source, all of the TLS 1.3 algorithms, and support for hardware encryption. Get ready for FIPS by using this download!

License: GPLV3

Release Date: 12/19/2023


(SHA256: 5a24b01f16957f0bec38e494e35617c0396928641aa897233e68c41268737f1b)

wolfSSL 5.6.6 includes bug fixes and enhancements including support additional hardware devices (STM32WL55), new hardware encryption support for ESP32 devices (ESP32-C3, ESP32-C6, ESP32-S2), improved DTLS 1.3 session resumption support, new implementation of SRTP-KDF and SRTCP-KDF, a cache-attack safe bitslice implementation of AES, support for memcached, and more!

License: GPLV2

Release Date: 12/19/2023


(SHA256: c339e82579849b0489bd14e6b14985d0c2ef0cc7394fd36d7662a48a30bbe7b4)

wolfCLU 0.1.5 fixes memory type issue, adds missing void args, and more!

License: GPLV2

Release Date: 12/22/2023


(SHA256: a2b1743b5d329347c60370e304465cf2775b9c3274f40fdbf1f3d7b91097a7af)

wolfTPM 3.1.0 adds support for using TLS PK callbacks with TPM for ECC and RSA, improves crypto callback support, adds RSA key generation, and more!

License: GPLV2

Release Date: 12/29/2023


(SHA256: 94a202987a3369a9fe5640f6178babd859293fdab6e9fdb65f4b12d9d1575f72)

wolfMQTT 1.18.0 adds curl easy socket backend, fixes Coverity issues, adds broker check to scripts, includes fixes to CMake build, and more!

License: GPLV2

Release Date: 12/22/2023


(SHA256: a16816e7c651f4e7d959945637bce8012a9b2f7aaf41c6ad27c39f4f75769b8f)

wolfSSH version 1.4.15 contains a new client application, Zephyr OS port, support for loading OpenSSH style keys, and many enhancements and fixes.

License: GPLV3

Release Date: 12/22/2023


(SHA256: f30d5279c8c16ba503089aff7ac0070264a60e12b130569c0ca1ec4f27c316ee)

wolfBoot 2.0.2 fixes a bug in the sign tool when using ECC keys, improves documentation, and adds customizable DCD for NXP targets.

License: GPLV2

Release Date: 12/29/2023


(SHA256: b9e758fddfad216204e67982c3abb4b8637358598d96d9d6ea6d2ecbdbc9dc29)

wolfSentry 1.6.2 includes improvements to scripts handling search PATH, wolfsentry_action_res_assoc_by_name() length argument change, addition of FUNCTION_SECTIONS to Makefile, and more!

License: GPLV2

Release Date: 01/02/2024


(SHA256: 57c88ad00143a88afdadb0ec60dc84c66cf4bbb17fe138d8f9f416e9988f4e2a)

curl 8.4.0 includes bug fixes and new features. See the ChangeLog/CHANGES document for full details.

License: GPLV3

Release Date: 10/11/2023


(SHA256: 65e7f32230f1e43339f80af66949463d3639063577f141fbf303eb4b4541f39e)

The goal of tiny-curl is to offer HTTPS GET powers within 100K of storage size (on a 32 bit system), and that includes wolfSSL.

License: GPLV3

Release Date: 10/30/2023


(SHA256: d815abcc53b5c9309622db54c4a37572dc80377bf716d8c1c5e54f762fcfdf88)

wolfSSL JNI/JSSE 1.12.0 includes bug fixes and new features including additional synchronization support in WolfSSLCertificate, fix for native memory free in WolfSSLCertificate, fix X509KeyManager.getCertificateChain() when alias is null, and more!

License: GPLV2

Release Date: 03/31/2023


(SHA256: 1bc30a719b200db787c2fffe3bd94353d90e9cfe67ce142a086caead0a8abb8a)

wolfCrypt JNI/JCE 1.5.0 adds build compatibility with Java 7, adds support for "SHA" algorithm string, adds rpm package support, adds JCE MessageDigest.clone() support, improves error checking of native wolfCrypt MD5 API calls, and includes additional unit tests.

License: GPLV2

Release Date: 11/14/2022


(SHA256: ca300048db27b92991dfebabf5cd6fd5c4be891ab5dc5fdb87946688453efd24)

wolfssl-py 5.6.6 fixes a segfault issue with TLS 1.3, updates expired example certs, and updates wolfSSL to version 5.6.6.

License: GPLV2

Release Date: 01/23/2024


(SHA256: 1b1de83845c104dd3103c0f47224543087856f7b8cb58f0668dc84eea624f458)

wolfcrypt-py 5.6.6 updates the wolfSSL version to 5.6.6.

License: GPLV2

Release Date: 01/23/2024


(SHA256: 05933eb4bea4103dc42dd773cfe9cb8507e4f323caf2d6c331d9ad9aa385b16a)

wolfEngine 1.4.0 adds internal calls to unlock private key use (needed for FIPS 140-3 compatibility), and allows users to override weak entropy source.

License: GPLV3

Release Date: 11/02/2023


(SHA256: bc509f514f673dc98a5a49c553cb7b0786b6c734042600da3f444efae2c4930c)

wolfPKCS11 1.2 adds backend support for TPM 2.0 using wolfTPM, adds AES-CBC key wrap/unwrap, includes portability improvements, improves testing with GitHub actions, and more!


Release Date: 12/26/2023


The wolfSSL source code is subject to the U.S. Export Administration Regulations and other U.S. law, and may not be exported or re-exported to certain countries (currently Afghanistan, Cuba, Iran, Iraq, Libya, North Korea, Sudan and Syria) or to persons or entities prohibited from receiving U.S. exports (including Denied Parties, entities on the Bureau of Export Administration Entity List, and Specially Designated Nationals).

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