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: 1962ec778915e675a8ca9c036f795dce9f8cde347fde17546ccd6b8339a38541)

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: 11/02/2022


(SHA256: bc441ae086ddb9d42e2ad391920b400b8cabb19d2aea5efb1cb90b527e0990ee)

wolfSSL 5.5.3 includes one bug fix for a possible buffer zeroization overrun introduced at the end of the 5.5.2 release cycle. See release notes for details.

License: GPLV2

Release Date: 11/02/2022


(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: 3f86b25ea8d153e384abc7ed65c63268f164c3ccb678edf4f4145b6b9b3b9c5a)

wolfTPM 2.6.0 includes fixes for the CSharp wrapper when setting a custom OID for CSR, adds CSharp documentation, adds CSharp functionality to set key password for blob, and more!

License: GPLV2

Release Date: 09/01/2022


(SHA256: 2126ce68d5da2596c446032c6f2bc260ddee928a692aa009bbe5f16f432ba08c)

wolfMQTT 1.14.1 fixes cmake builds, Vcpkg on Windows, and more.

License: GPLV2

Release Date: 08/31/2022


(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: 1440ea6a80557f440939caca3fc0ca87defba741ba88aeb76c1c06712b7f60eb)

wolfBoot 1.13 fixes IAR sign script, adds support for encrypted self-update, adds support for NAII 68PPC2 with NXP T2080 on DEOS, fixes Xilinx QSPI support, fixes API usage in external flash support for SPI/UART, fixes bug in encrypted delta updates, and updates wolfCrypt to use wolfSSL 5.5.3.

License: GPLV2

Release Date: 11/08/2022


(SHA256: 53aaedf3041a2bd0de2dfd9100a4de14dc47618a498bdc8bd78b6ec231e0846e)

wolfSentry 0.7.0 has bug fixes and new features including support for freeform user-defined JSON objects, new APIs for JSON KVs (key-value), new config load flags controlling KV parsing, support for setting a user KV as read-only, updated examples, and more!

License: GPLV2

Release Date: 11/07/2022


(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: 28cd5cd2f93458a3114c0294d22e16f8660228d26aa874a9c11557640ad37ec5)

wolfSSL JNI/JSSE adds support for keyStore system properties, adds secure renegotiation support, improves the SSLEngine implementation and fixes synchronization issues, adds non-standard checkServerTrusted(), adds RPM packaging support, and more!

License: GPLV2

Release Date: 12/02/2022


(SHA256: 1bc30a719b200db787c2fffe3bd94353d90e9cfe67ce142a086caead0a8abb8a)

wolfCrypt JNI/JCE 1.5.0 adds build compatibility with Java 7, adds support for "SHA" algorithm string, adds rpm package support, adds JCE MessageDigest.clone() support, improves error checking of native wolfCrypt MD5 API calls, and includes additional unit tests.

License: GPLV2

Release Date: 11/14/2022


(SHA256: b98e65ab85e691c6a4d45dc5669bbe2ee02f5476a7af0f6ccaa6ce9f81221587)

wolfSSL Python 5.5.3 fixes TLS 1.3 support, disables oldtls support, adds ChangeLog, adds support for CRL and DTLS, fixes alert history code, and updates wolfSSL to version 5.5.3.

License: GPLV2

Release Date: 11/07/2022


(SHA256: f8e3058c610e7d9f2b646b02d2c3bddf007c22b1eaae404bf0522f1023ef3d9a)

wolfCrypt Python 5.5.3 adds ChangeLog, adds optional hash_type parameter to RSA from_pem routines, improves RSA PSS code, gates includes of wc_GenerateSeed in C wrapper on WC_RNG_SEED_CB_ENABLED, includes improvements to the CFFI build process, and updates the wolfSSL version to 5.5.3.

License: GPLV2

Release Date: 11/07/2022


(SHA256: 486dafb16ad3f5e29d402a143c77d37ed5718f3cf6b6ccc2177c3f16f69989fe)

wolfEngine 1.2.0 includes bug fixes and new features including RNG now mixes in some additional entropy, compatibility with FIPS 140-3 candidate code for multi-threaded Windows applications, RSA support for 'rsa_keygen_pubexp' and 'verify_recover', Visual Studio solution improvements, and more!

License: GPLV3

Release Date: 09/29/2022


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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