Embedded TLS Library for Applications, Devices, IoT, and the Cloud. Providing secure communication for IoT, smart grid, connected home, automobiles, routers, applications, games, IP, mobile phones and more.
The wolfSSL library is a lightweight SSL/TLS library written in ANSI C and targeted for embedded, RTOS, and resource-constrained environments, primarily because of its small size, speed, and feature set. It is commonly used in standard operating environments as well because of its royalty-free pricing and excellent cross-platform support. wolfSSL supports industry standards up to the current TLS 1.3 and DTLS 1.2 levels, is up to 20 times smaller than OpenSSL, and offers progressive ciphers such as ChaCha20, Curve25519, NTRU, Blake2b, and SHA-3 (Keccak). User benchmarking and feedback reports dramatically better performance when using wolfSSL over OpenSSL.
wolfSSL is powered by the wolfCrypt library. wolfCrypt is FIPS 140-2 Level 1 validated, with certificates #2425 and #3389.
For additional information, visit our FIPS FAQ page or contact firstname.lastname@example.org.
wolfSSL is built for maximum portability, and is generally very easy to compile on new platforms. If your desired platform is not currently supported, please contact wolfSSL.
wolfSSL supports the C programming language as a primary interface. It also supports several other host languages, including Java (wolfSSL JNI), C# (wolfSSL C#), Python (wolfSSL Python), and PHP and Perl (through a SWIG interface). If you have interest in using wolfSSL in another programming language that it does not currently support, please contact wolfSSL at email@example.com.
- SSL 3.0 and TLS 1.0, 1.1, 1.2 and TLS 1.3! (client and server)
- DTLS 1.0 and 1.2 support (client and server)
- Minimum size of 20-100kb
- Runtime memory usage between 1-36kb
- OpenSSL compatibility layer
- OCSP, OCSP Stapling, and CRL support
- Multiple Hashing Functions: MD2, MD4, MD5, SHA-1, SHA-2 (SHA-256, SHA-224, SHA-384, SHA-512), SHA-3 (Keccak), BLAKE2b, RIPEMD-160, Poly1305
- Block and Stream Ciphers: AES (CBC, CTR, GCM, CCM, GMAC, CMAC), Camellia, DES, 3DES, IDEA, ARC4, RABBIT, HC-128, ChaCha20
- Public Key Options: RSA, DSS, DH, EDH, ECDH-ECDSA, ECDHE-ECDSA, ECDH-RSA, ECDHE-RSA, NTRU
- Password-based Key Derivation: HMAC, PBKDF2, PKCS#5
- Curve25519 and Ed25519
- ECC and RSA Key Generation
- X.509v3 RSA and ECC Signed Certificate Generation
- Mutual authentication support (client/server)
- PSK (Pre-Shared Keys)
- Simple API
- Persistant session and certificate cache
- PEM and DER certificate support
- Certificate Manager
- Hardware crypto support: Intel AES-NI, AVX1/2, RDRAND, RDSEED, SGX, Cavium NITROX, Intel QuickAssist, STM32F2/F4, NXP (CAU, mmCAU, SEC, LTC), Microchip PIC32MZ, ARMv8
- SSL Sniffer (SSL Inspection) Support
- MySQL integration
- Much more…
wolfSSL Supported Chipmakers
wolfSSL has support for chipsets including ARM, Intel, Motorola, mbed, NXP/Freescale, Microchip/Atmel, STMicro, Analog Devices, Texas Instruments, and more. If you would like to use or test wolfSSL on another chipset or OS, let us know and we’ll be happy to
wolfSSL Supported Operating Environments
Win32/64, Linux, Mac OS X, Solaris, ThreadX, VxWorks, FreeBSD, NetBSD, OpenBSD, embedded Linux, WinCE, Haiku, PikeOS, OpenWRT, iPhone (iOS), Android, Nintendo Wii and Gamecube through DevKitPro, QNX, MontaVista, OpenCL, NonStop, TRON/ITRON/μITRON, Micrium's μC/OS, FreeRTOS, SafeRTOS, Freescale MQX, Nucleus, TinyOS, HP/UX, ARC MQX, TI-RTOS, uTasker, embOS, INtime, Mbed, uT-Kernel, RIOT, CMSIS-.
SSL/TLS in Qt: Introduction to wolfSSL