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: 79857a0da37842b388448dd4822f847aa64b0a82dbc4e78a50b95784085d2a98)

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: 05/03/2022


(SHA256: 60d9d47b255f05da0c90538b30cd6b43bcbc8a29f057ed41d4dd14aee4dde8bd)

wolfSSL 5.3.0 includes bug fixes, updated OSP project support, updated OpenSSL compatibility support, i.MX8 NXP SECO support, Renesas TSIP 1.15 for GR-ROSE, FFMPEG support, post-quantum KEM benchmarks on STM32, sniffer asynchronous support, OCSP IPv6, SP optimizations, wolfRand for AMD, and much more!

License: GPLV2

Release Date: 05/03/2022


(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: ea7b9cfb4bcedb53203c8780f1ac55adef5824fd8ac5f0bdda530e0ee4a0f270)

wolfTPM 2.4.0 adds CMake support, adds C# wrappers, adds ST33 GetRandom2, improves TPM2_SetupPCRSel, includes fixes for C++ compilers, and new example for installing and writing PEM.

License: GPLV2

Release Date: 05/06/2022


(SHA256: dace8be02d5b0fe92e1fda935b65b93e5ba12471df88a1319604d0a3119e05c9)

wolfMQTT 1.13.0 includes fixes for Windows build tests, adds async support, allows message callback to be set reason code for response, new port to NUCLEO F767ZI with TOPPERS OS, fixes non-blocking state and large payloads, adds CMake build support, fixes improper reset of shared objects, and more!

License: GPLV2

Release Date: 05/04/2022


(SHA256: 6f455dc5271d63cc40e0a722b335ff70d4bd18468a41b55fe4a6580e6acb36d2)

wolfSSH 1.4.10 includes bug fixes, small stack optimizations, updated Visual Studio support, expanded SFTP example, and more!

License: GPLV3

Release Date: 05/13/2022


(SHA256: 3ab5f65c18c6e471a9c120d9011dc690f68183dbae84c2e9fe4333a01e878444)

wolfBoot is a secure bootloader that leverages wolfSSL's underlying wolfCrypt module to provide signature authentication for the running firmware. This version includes mitigation against fault-injections and glitching attacks, supports AES-128 and AES-256 for update encryption, supports ECC384 for signature verification, supports SHA2-384 for image hash, fixes alignment of delta update fields in manifest, adds test automation based on renode.io and GitHub actions, adds hardware support for STM32U5 and NXP i.MX-RT1050, and more!

License: GPLV2

Release Date: 05/04/2022


(SHA256: 28f6506edb39e2077cb7f74171cac54375409695686d0435084c34025048d07a)

Initial release of the wolfSentry embedded firewall/IDPS!

License: GPLV2

Release Date: 12/30/2021


(SHA256: 2c1efc6fb81db9512471d75a3abc6b7163d87f03f91c01bcf868375af56b07bd)

curl 7.83.0 adds experimental %header{name} and %{header_json} support in -w handling, --no-clobber, --remove-on-error, curl_easy_header and curl_easy_nextheader, QUIC and HTTP/3 using msh3, and more!

License: GPLV3

Release Date: 04/27/2022


(SHA256: 12a076025a65a18251ba2ab6e9136c496d8582c7f0846178e9311f98f6167949)

tiny-curl version 7.72.0 includes bug fixes and new features including Micrium uC/OS-III support and FreeRTOS support!

License: GPLV3

Release Date: 08/19/2020


(SHA256: 18d017bd326ab19e7bf63c952d198db2a0791b2dce4a1340dc9a3b2ed6dd0637)

wolfSSL JNI/JSSE 1.9.0 removes algorithm support (HC-128, RABBIT, IDEA), adds support for newer Java versions, fixes native JNI casting, adds synchronization to cleanup/free routines, adds Socket timeout support for SSL_connect/write(), fixes WolfSSLEngine shutdown/close_notify behavior, and more!

License: GPLV2

Release Date: 05/05/2022


(SHA256: 1a4e6bc359e8873b88a6f891b83779b5674602e152b792fc1ee10afb32a402f1)

wolfCrypt JNI/JCE 1.3.0 includes bug fixes, FIPS test fixes, wraps AesGcmSetExtIV_fips(), fixes AES-GCM test cases, adds JCE MessageDigestSpi.engineGetDigestLength(), and more.

License: GPLV2

Release Date: 05/13/2022


(SHA256: 9edbc9c9edddef6b316696de92e04fd70a242d30b162b8e5a2bbe4070793c63a)

wolfssl-py 5.3.0 has bug fixes and new features including update to wolfSSL 5.3.0, build refactored to be more Python-like and easier to use, adds support for wolfSSL CTX password callback, and more!

License: GPLV2

Release Date: 05/13/2022


(SHA256: da7792e811420e638ebadc3861fea1a7b9f8278ba42c7a29648aca9bfd976d70)

wolfCrypt Python 5.3.0 has bug fixes and new features including update to wolfSSL 5.3.0, build refactored to be more Python-like and easier to use, adds support for SHA-3, ChaCha, RSA private keys in PKCS#8 format, and PBKDF2, adds support for wolfCrypt FIPS and FIPS Ready, and more!

License: GPLV2

Release Date: 05/10/2022


(SHA256: 338a8ba64d0321e23fa82fa409d78c6b51966c5b0accedeaa278b74f0864cb72)

wolfEngine 1.1.0 includes bug fixes, updates documentation for --enable-engine flag, adds config file example, adds support for X9.31 padding with RSA signatures, and more.

License: GPLV3

Release Date: 05/16/2022


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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