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: 6d9cb110947efebd637f5d480bf810c30e915041b1eb8671e3c487d37d14047a)

wolfSSL 4.4.0 includes bug fixes and new features including support for Qualcomm Hexagon SDK, aDSP offloading for ECDSA verify operations, Certificate Manager callback, new Open Source project ports for Apache and OpenVPN, IBM s390x, P384 for SP library, AES-OFB, AES-CFB, Curve448, X448, Ed448, Renesas Synergy S7G2 port, and more.

License: GPLV2

Release Date: 04/22/2020


(SHA256: 865717ca410cb42da8b5a3dec189b2f26465bc136bef6569f1b0c51199cb9baa)

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: 05/22/2020


(SHA256: 196a3256a9044ecb89504ce77850342c82e676e7f2cad77f5584be3516b6060e)

This release includes one vulnerability fix, bug fixes, fixes to TLS 1.3 including support for Draft 21, disables TLS 1.0 by default, new options for memory reduction, Intel AVX1/AVX2 performance improvements, SHA-3 size and performance improvements, assembly optimizations for Curve25519 and Ed25519, expanded OpenSSL compatibility layer, updated project files for Visual Studio, TI-RTOS, STM32 CubeMX, IAR EWARM, Apple Xcode, and more!

License: GPLV2

Release Date: 12/21/2017


(SHA256: 5ed0febea1ae93bca413b933677412c57b07ec40fe9a33fbfc5fc4b04f342dba)

wolfTPM 1.8.0 adds Xilinx Zynq Ultrascale+ MPSoC support, Linux TIS kernel driver support, Nuvoton and Nations Tech TPM module support, and more!

License: GPLV2

Release Date: 04/28/2020


(SHA256: a67f374280393a36dae6a4cf585cde26a37ca9170dc69d6c861f84730292488c)

wolfMQTT 1.6.0 includes fixes for MQTTv5, thread synchronization and multithreading, and new features including simple standalone MQTT client example, improved multi-thread example, multithread example for Windows and Visual Studio, and more!

License: GPLV2

Release Date: 04/24/2020


(SHA256: 797fc18d5599e82013412ee0ab482df4cb6dd6915ac3ab7605309acbfd955830)

wolfSSH 1.4.4 includes a wolfSCP client example, support for building on VxWorks, bug fixes, and improvements!

License: GPLV3

Release Date: 04/28/2020


(SHA256: 05e24cbcbc54c8e7231fdb8b017a827f03abc50ea78905aaac5e554aa959d855)

wolfBoot is a secure bootloader that leverages wolfSSL's underlying wolfCrypt module to provide signature authentication for the running firmware. This version adds new features including RSA 4096-bit signature verification, SHA3 support, portable C key management tools, improved Microsoft Windows integration with Visual Studio solutions for management tools, IAR support, ARMv8 (64-bit) support, external flash abstraction, and new HAL support!

License: GPLV2

Release Date: 04/28/2020


(SHA256: ca293ef43bd060ee0630245c1af69375bdf815dc5f399a9aeeef623a913e7b17)

cURL 7.70.0 includes bug fixes and new features including MQTT support!

License: CURL

Release Date: 04/29/2020


(SHA256: f2a5292ad66f72a6f27df54a616fb30d55b46197ff93c71951b63afa4ae5269d)

tiny-curl is a patch set on top of the regular curl download to reduce size and resource usage. tiny-curl version 0.11 is based on curl version 7.69.1.

License: GPLV3

Release Date: 03/11/2020


(SHA256: c1d1f465f30bcec34e7ca111b4705535940d006ee0efd7cc39b424b77c585929)

wolfSSL JNI 1.5.0 includes bug fixes and new features including a new JSSE provider complete with TLS 1.3 support and examples, updated JNI wrappers for better feature detection and PKCS#8 support, updated ant build.xml, updated to use junit 4.13, separate ant targets for build, examples, and test, and more!

License: GPLV2

Release Date: 01/17/2020


(SHA256: f3ab7bf27b65689ca71da1d2460090d018ea3a01dc8b720ae27051f18b8b026c)

Initial release of the wolfCrypt JNI wrapper and wolfCrypt JCE Provider.

License: GPLV2

Release Date: 07/10/2017


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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