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) versions of both wolfSSL and wolfSSL JNI. If your project cannot tolerate the terms of the GPLv2, 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: b6360ecc97127c29c0757d762b537dc1c6853c5e0d9394315bf1c0399c2777b7)

wolfSSL v4.0.0 includes many feature additions, bug fixes, and improvements to the wolfSSL library. Additionally, this new version of the wolfSSL library includes support for the new FIPS 140-2 Certificate for wolfCrypt v4.0!

License: GPLV2

Release Date: 03/21/2019


(SHA256: 75ac32a0b42cf3c697e14de27551f06095866150535bf524e99765479e741c3a)

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: 03/28/2019


(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: d48c936b39cd29d6d2b4996cf37449b6a26e769072f485e8563d11fa5f42fb60)

wolfTPM version 1.5.0 was recently released, and features many new updates and additions to the wolfTPM library including support for Microchip ATTPM20 TPM 2.0 module, barebox bootloader, updated benchmarking support, and more.

License: GPLV2

Release Date: 02/21/2019


(SHA256: db795f40423bafefe6ff5905e2459a4195f6b72757d10764d55e5e4c596d1a5b)

Release 1.2.0 includes bug fixes and new features including added MQTT sensor-network client support, MQTT v5.0 support, property callback support, and more!

License: GPLV2

Release Date: 11/07/2018


(SHA256: e526758eed929d2ddb9d38c23d20b1db384492fe80c543acb11862b089842b55)

Many new and exciting features were added to wolfSSH with this release, including support for port forwarding, client side pseudo terminal support, enhancements for non blocking use, AES-CTR cipher support, and support for SFTP on windows.

License: GPLV3

Release Date: 04/30/2019


(SHA256: d798bd3997b98b4c6d6d345d0578dbafedfa799142284985aa99bda0a3418341)

wolfBoot is a secure bootloader that leverages wolfSSL's underlying wolfCrypt module to provide signature authentication for the running firmware. This version includes feature additions such as added HAL support, ECC-256 DSA, and more.

License: GPLV2

Release Date: 03/27/2019


(SHA256: da18fa3650684274e18c75e871b6be75cec0decd701ddee29af1a8e169959696)

Version 7.65.1 fixes bugs and issues that became evident as 7.65.0 was released.

License: CURL

Release Date: 05/22/2019


(SHA256: 6adb1092c3390c07f65ffa8641cead8b4db6355c1915cdfcbdebea2b36c47a0a)

tiny-curl is a patch set on top of the regular curl download to reduce size and resource usage. tiny-curl version 0.9 is based on curl version 7.64.1.

License: GPLV3

Release Date: 05/03/2019


(SHA256: 452408f8a39b26ca566b9758b64ca33e41eebc9fb3f47ad1f70efcc166efc7ba)

wolfSSL JNI 1.4.0 includes bug fixes and new features including better conditional support for native wolfSSL feature dependencies, native feature detection functions, method for loading JNI library from a specific path, TLS 1.0 compiled out by default, wrapper for native ECC shared secret public key callback, other HmacSHA* hash types allowed in Atomic User callback examples, and more.

License: GPLV2

Release Date: 11/16/2018


(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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