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: ce3715606df3cb0e9abc253a29d88f2cc06948c5e8b29472347765262cbbec28)

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: 07/11/2022


(SHA256: 4be4156f06a394ec175772171824f5b86e4e1359e7f5000097d1e3e7167e8698)

wolfSSL 5.4.0 includes bug fixes, enables SP math by default, adds DTLS 1.3 support, supports DPP and EAP-TEAP/EAP-FAST with wpa_supplicant, adds Renesas RX TSIP TLS 1.3 support, includes constant time improvements, adds SP Math support for ARMv3/ARMv6/ARMv7a, adds support for SEGGER embOS/emNET, includes OpenSSL compatibility layer improvements, and much more!

License: GPLV2

Release Date: 07/11/2022


(SHA256: 447d70e634047a373cf319ff2481ac7cea730a64e0c641bf03c258912f951916)

Release 5.3.1 of wolfSSL is a BETA release to test DTLS 1.3. DTLS v1.3 (RFC 9147) is now supported! WARNING: This is for BETA testing only, not ready for production.

License: GPLV2

Release Date: 06/20/2022


(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: 4e49fa4a584a708edc2230f59f5f2a069d4ac31fa8ba2216fa1832f22db7a7e8)

wolfTPM 2.5.0 expands C# wrapper for key handling, CSR/Cert generation, RSA enc/dec and sign/verify. It also adds Infineon SLB9672 support, enhances CMake support, and adds new kegyen example.

License: GPLV2

Release Date: 07/22/2022


(SHA256: 54eaa9ec2d9c598cb38a0006c4958129053ce3e6036912c9e3932e37be650e0c)

wolfMQTT 1.14.0 includes support for post-quantum KYBER_LEVEL1 and P256_KYBER_LEVEL1 with FALCON_LEVEL1, adds WOLFMQTT_USE_CB_ON_DISCONNECT on client disconnect, and fixes release connect ack props.

License: GPLV2

Release Date: 07/25/2022


(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: 1e439832a8d060b2567a0a950e1cc8c7d86c3338c3abf2a37f8b5dbb6e14d276)

wolfBoot 1.12 includes support for encrypted delta updates, RSA 3072-bit signature verification support, Partition ID support, a new format to store multiple public keys using a keystore, fixes to keytools and IDE support, new test cases, and HAL support for simulated targets.

License: GPLV2

Release Date: 07/26/2022


(SHA256: bacabddb87772a481129a52568ef0313440526fffd52103a88a3ea9b1df6635b)

wolfSentry 0.5.0 has bug fixes and new features including new notification-demo example, new wolfsentry_init_ex() API, runtime error checking on lock facility, and more.

License: GPLV2

Release Date: 08/01/2022


(SHA256: b00d84ffe1219f3b013629840b09dae2df5b7e24fb7447b9b74fad280024c73b)

curl 7.84.0 fixes bugs, adds --rate, deprecates --random-file and --egd-file, adds CURL_VERSION_THREADSAFE, supports unix sockets for socks proxy, and more!

License: GPLV3

Release Date: 06/27/2022


(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: 388222226ed3294322b3ed96c22bc1ea3418bf0719b13321778ae0f580b11b2e)

wolfSSL Python 5.4.0 updates support to the wolfSSL 5.4.0 C library, adds GitHub Actions support, and removes Travis CI support.

License: GPLV2

Release Date: 07/13/2022


(SHA256: 0f01d4998cdb97bca70308147208241fd2036286eb407c1a5a11ba799505f217)

wolfCrypt Python 5.4.0 updates support to the wolfSSL 5.4.0 C library, adds GitHub Actions support, removes Travis CI, includes fixes for PyPi, and includes CMake cleanups.

License: GPLV2

Release Date: 07/13/2022


(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).

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