wolfSSL - Product Downloads


(View More Downloads)

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.


(Letters allowed)

(Letters and Numbers allowed)

(Letters and Numbers allowed)

(Ex: name@company.com)


Allowed characters include: letters, numbers, and [.,;:&"?!'()-] (max. character count: 300)

  Do you need evaluation support or assistance from wolfSSL?


[Please select your desired download]

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: 30bea4b6537157c4720435343b380c5eca9185218738265ca6e090828e7c9c06)

wolfSSL 5.7.0 includes bug fixes and enhancements including experimental implementations of XMSS, LMS, and ML-KEM (Kyber), experimental support for post quantum dual key/signature certificates, crypto callback support for PQC algorithms, more Linux kernel module algorithm support, PKCS7 fixes, Microchip PIC24 support, and more!

License: GPLV2

Release Date: 03/20/2024


(SHA256: d20cc6893c83ba76b27e026e6023a36164e7222ab72cd755b6d23593612591da)

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: 03/20/2024


(SHA256: c339e82579849b0489bd14e6b14985d0c2ef0cc7394fd36d7662a48a30bbe7b4)

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

License: GPLV2

Release Date: 12/22/2023


(SHA256: 15e3739adb72da6b4ca2fbbb08c117d0714c1d80b5f426f9da5790be5176b0da)

wolfTPM 3.2.0 adds TPM Firmware update support (Infineon SLB9672/SLB9673), support for pre-provisioned device identity keys/certificates (STMicro ST33), fixes an issue with sealing a secret to prevent 'userWithAuth' by default, and expands the TPM get capabilities support.

License: GPLV2

Release Date: 04/24/2024


(SHA256: d114a82ad0c89107151cb646eea53611a6faad696e43d4566520f220039886a8)

wolfMQTT 1.19.0 includes bug fixes and adds a stress test, a CMake CI test, initial Espressif ESP32 template and AWS IoT examples, STM32CUBE fixes, and more!

License: GPLV2

Release Date: 03/22/2024


(SHA256: 2fc7bedca38dd40933d0d99b8613f074158d74132f925922c40a89d20af3718c)

wolfSSH 1.4.17 includes fixes and new features including ability to set algorithm lists for KEX and runtime, soft disabling SHA-1, Curve25519 KEX support for server/client key agreement, and more!

License: GPLV3

Release Date: 03/25/2024


(SHA256: c6fcb58d4b7a48593e865723c80916784bfb3d09f2c710e908c1848d074b7957)

wolfBoot 2.1.0 adds custom TLVs in manifest header, adds ECC521 support, adds support for new platforms including Microchip ATSAM-E51, Renesas RZN2L, NXP i.MX-RT1040, and NXP MCXA-153, includes bug fixes, and more!

License: GPLV3

Release Date: 04/16/2024


(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: 0c674ae453948aa93063351e04752271a844c71de6fea9fe24633610abc6ed9b)

curl 8.6.0 includes bug fixes and new features. See the ChangeLog/CHANGES document for full details.

License: GPLV3

Release Date: 01/31/2024


(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: 9c8e124b845f8c3accad433f39e02e75c74dc8d87577ced54eb21b58719a777d)

wolfSSL JNI/JSSE includes bug fixes and new features including improvements to SSLSocket and SSLEngine classes, thread synchronization fixes, new Security and System property support, Maven build support, Windows Visual Studio support, session resumption fixes, and more!

License: GPLV2

Release Date: 04/09/2024


(SHA256: aea6a21e0433831e8f2669b28bee5ae9166e3964a8d1ee3b2840ef07d09bd09a)

wolfCrypt JNI/JSSE 1.6.0 includes bug fixes and new features including KeyPairGenerator RSA support, Cipher support for AES/CBC/PKCS5Padding, RSA, and AES/GCM/NoPadding, CertPathValidator PKIX support, SecretKeyFactory PBKDF2 support, Windows Visual Studio support, updated Maven build support, and more!

License: GPLV2

Release Date: 04/17/2024


(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: bc7099302dbf50abd0bb4c3df2dace812b7d7f09f4d88cd2f781fd9fecb899f6)

wolfPKCS11 1.3.0 adds Visual Studio support and includes fixes for cast warnings and portability.

License: GPLV3

Release Date: 03/22/2024


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).

  I have read and agree to the GNU license agreement. (required)