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: f44ad0fc260acde4e42e60167b218034b4c8bf73718410f2f3b431a6c41edea8)

wolfSSL 4.6.0 includes bug fixes and new features including linux kernel module support, support for Apple A12Z, expansion of SP math, Apache httpd TLS 1.3 support, sniffer support for TLS 1.3 and AES-CCM, NXP DCP (i.MX RT1060/62) crypto co-processor support, Silicon Labs hardware acceleration support, XChaCha and XChaCha20-Poly1305 AEAD support, and more.

License: GPLV2

Release Date: 12/22/2020


(SHA256: 947834c7a5d0d5c97b477770a0cc3df1fd49a7dcc2e4a56832f855fd39af9d10)

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: 12/22/2020


(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: e99914a4cbfef7f0e311f48d107685ac5e1574f41709f578aa3502604b290468)

wolfTPM 2.0.0 adds AES CFB parameter encryption, HMAC sessions, TPM simulator, Windows TPM (TBSI) support and more examples for time/keys.

License: GPLV2

Release Date: 12/07/2020


(SHA256: ddb0630f75f1ab12af6512196690e7c75c0ce6c390457f1f8409734aa36d0bef)

wolfMQTT 1.7.0 includes fixes for publish with short topic name, multithreading, strcpy() and getaddrinfo() usage, nonblocking mode, publishing large payloads, and mqttsimple example.

License: GPLV2

Release Date: 08/21/2020


(SHA256: 3e9ecb4aef9af54edc1674e54ebc64950aa77b8b4c92136486c411eabec94262)

wolfSSH 1.4.5 includes bug fixes and new features including SSH-AGENT support, IAR-EWARM support, example echoserver can now spawn a shell and set up a pty with it, new example for SCP callback without a filesystem, and more!

License: GPLV3

Release Date: 08/31/2020


(SHA256: 3930b32c29d1ba505b20f8d2fec33ccf931ccae0c90252b0b7744d1141d6c91f)

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 support for encryption of external partitions, support for MPU on ARM Cortex-M, support for using an RSA signature that includes an ASN.1 encoded header, bootloader updates from external flash, TPM RSA verify support, option to use software SHA with a TPM, Cypress PSoC6 support, Nordic nRF52 support, and more!

License: GPLV2

Release Date: 08/25/2020


(SHA256: 7105c856779a372f172cc6a7db0bc23261c40e1fe92517a787386e884abb2915)

cURL 7.74.0 includes bug fixes, CVE fixes, the addition of experimental support for Strict-Transport-Security (hits), and more!

License: GPLV3

Release Date: 12/09/2020


(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: f42464561c64f9e980ed2c5348a4989d532c29c5e09f9bef5da49e6098fb9d80)

wolfSSL JNI/JSSE 1.6.0 includes bug fixes and new features including support for custom TrustManagers, registers wolfJSSE TrustManager as PKIX provider, improved support for auto-loading system CA certs, improved Android support, memory optimizations, easier and more debug logs, client-side SNI support, client-side session ticket support, OkHttp compatibility, and more!

License: GPLV2

Release Date: 08/26/2020


(SHA256: d573fec98298c927037be877ff04f41a97a9a65fdee2c40bb4b6d45c99bb9164)

wolfCrypt JNI/JCE 1.1.0 includes bug fixes and new features including JNI wrappers for ChaCha, Curve25519, and Ed25519, updated error code values, native HMAC wrapper fixes for FIPSv2, removal of Blake2b from HMAC types, better native wolfSSL feature detection, nativeheaderdir support, and more!

License: GPLV2

Release Date: 08/26/2020


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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