wolfSSL
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Developer(s) | Todd Ouska |
---|---|
Initial release | February 19, 2006[1] |
Stable release | 4.8.1 (July 16, 2021[2]) |
Repository | github |
Written in | C |
Operating system | Multi-platform |
Type | Cryptography library |
License | GPLv2 or proprietary |
Website | www |
wolfSSL is a small, portable, embedded SSL/TLS library targeted for use by embedded systems developers. It is an open source implementation of TLS (SSL 3.0, TLS 1.0, 1.1, 1.2, 1.3, and DTLS 1.0, 1.2, and 1.3) written in the C programming language. It includes SSL/TLS client libraries and an SSL/TLS server implementation as well as support for multiple APIs, including those defined by SSL and TLS. wolfSSL also includes an OpenSSL compatibility interface with the most commonly used OpenSSL functions.[3][4]
A predecessor of wolfSSL, yaSSL is a C++ based SSL library for embedded environments and real time operating systems with constrained resources.
Platforms[]
wolfSSL is currently available for Win32/64, Linux, macOS, Solaris, Threadx, VxWorks, FreeBSD, NetBSD, OpenBSD, embedded Linux, Yocto Project, OpenEmbedded, WinCE, Haiku, OpenWrt, iPhone, Android, Nintendo Wii and Gamecube through DevKitPro support, QNX, MontaVista, Tron variants, NonStop OS, OpenCL, Micrium's MicroC/OS-II, FreeRTOS, SafeRTOS, Freescale MQX, Nucleus, TinyOS, TI-RTOS, HP-UX, uTasker, uT-kernel, embOS, INtime, mbed, RIOT, CMSIS-RTOS, FROSTED, Green Hills INTEGRITY, Keil RTX, TOPPERS, PetaLinux, Apache Mynewt, and PikeOS.[5]
History[]
The genesis of yaSSL, or yet another SSL, dates to 2004. OpenSSL was available at the time, and was dual licensed under the OpenSSL License and the SSLeay license.[6] yaSSL, alternatively, was developed and dual-licensed under both a commercial license and the GPL.[7] yaSSL offered a more modern API, commercial style developer support and was complete with an OpenSSL compatibility layer.[3] The first major user of wolfSSL/CyaSSL/yaSSL was MySQL.[8] Through bundling with MySQL, yaSSL has achieved extremely high distribution volumes in the millions.
In February 2019, Daniel Stenberg, the creator of cURL, joined the wolfSSL project.[9]
Protocols[]
The wolfSSL lightweight SSL library implements the following protocols:[10]
- SSL 3.0, TLS 1.0, TLS 1.1, TLS 1.2, TLS 1.3
- DTLS 1.0, DTLS 1.2, DTLS 1.3
Protocol Notes:
- SSL 2.0 - SSL 2.0 was deprecated (prohibited) in 2011 by RFC 6176. wolfSSL does not support it.
- SSL 3.0 - SSL 3.0 was deprecated (prohibited) in 2015 by RFC 7568. In response to the POODLE attack, SSL 3.0 has been disabled by default since wolfSSL 3.6.6, but can be enabled with a compile-time option.[11]
Algorithms[]
wolfSSL uses the following cryptography libraries:
wolfCrypt[]
By default, wolfSSL uses the cryptographic services provided by wolfCrypt.[12] wolfCrypt Provides RSA, ECC, DSS, Diffie–Hellman, EDH, NTRU, DES, Triple DES, AES (CBC, CTR, CCM, GCM), Camellia, IDEA, ARC4, HC-128, ChaCha20, MD2, MD4, MD5, SHA-1, SHA-2, SHA-3, BLAKE2, RIPEMD-160, Poly1305, Random Number Generation, Large Integer support, and base 16/64 encoding/decoding. An experimental cipher called Rabbit, a public domain software stream cipher from the EU's eSTREAM project, is also included. Rabbit is potentially useful to those encrypting streaming media in high performance, high demand environments.
wolfCrypt also includes support for the recent Curve25519 and Ed25519 algorithms.
wolfCrypt acts as a back-end crypto implementation for several popular software packages and libraries, including MIT Kerberos[13] (where it can be enabled using a build option).
NTRU[]
CyaSSL+ includes NTRU[14] public key encryption. The addition of NTRU in CyaSSL+ was a result of the partnership between yaSSL and Security Innovation.[14] NTRU works well in mobile and embedded environments due to the reduced bit size needed to provide the same security as other public key systems. In addition, it's not known to be vulnerable to quantum attacks. Several cipher suites utilizing NTRU are available with CyaSSL+ including AES-256, RC4, and HC-128.
SGX[]
wolfSSL supports use of Intel SGX (Software Guard Extensions).[15] Intel SGX allows for a smaller attack surface area and has been shown to provide a higher level of security for executing code without a significant negative impact on performance.
Hardware Acceleration Platforms Supported[]
Supported trusted elements[]
Currently, wolfSSL has the following as supported trusted elements:
- STSAFE
- ATECC508A
Hardware encryption support[]
The following tables list wolfSSL's support for using various devices' hardware encryption with various algorithms.
Device | AES-GCM | AES-CCM | AES-CBC | AES-ECB | AES-CTR |
---|---|---|---|---|---|
Intel AES-NI
(Xeon and Core processor families) |
All | All | All | All | All |
Freescale
Cryptographic Accelerator and Assurance Module (CAAM) |
All | All | All | All | |
Freescale Coldfire SEC
(NXP MCF547X and MCF548X) |
All | ||||
Freescale Kinetis MMCAU
K50, K60, K70, and K80 (ARM Cortex-M4 core) |
All | All | All | All | |
STMicroelectronics STM32
F1, F2, F4, L1, W Series (ARM Cortex - M3/M4) |
All | All | |||
Cavium NITROX
(III/V PX processors) |
All | ||||
Microchip PIC32 MX/MZ
(Embedded Connectivity) |
All | All | All | ||
Texas Instruments TM4C1294
(ARM Cortex-M4F) |
All | All | All | All | All |
Nordic NRF51 Archived 2018-06-19 at the Wayback Machine
(Series SoC family, 32-bit ARM Cortex M0 processor core) |
128-bit | ||||
ARMv8 | All | All | All | ||
Intel QuickAssist Technology | All | All | |||
Freescale NXP LTC | All | All | All | All | All |
Xilinx Zynq UltraScale+ | 256-bit |
- "All" denotes 128, 192, and 256-bit supported block sizes
Device | DES-CBC | DES-ECB | 3DES-CBC |
---|---|---|---|
Freescale Coldfire SEC
(NXP MCF547X and MCF548X) |
64 bit | 192 bit | |
Freescale Kinetis MMCAU
K50, K60, K70, and K80 (ARM Cortex-M4 core) |
64 bit | 192 bit | |
STMicroelectronics STM32
F1, F2, F4, L1, W Series (ARM Cortex - M3/M4) |
64 bit | 64 bit (encrypt) | 192 bit |
Cavium NITROX
(III/V PX processors) |
192 bit | ||
Microchip PIC32 MX/MZ
(Embedded Connectivity) |
64 bit | 192 bit | |
Texas Instruments TM4C1294
(ARM Cortex-M4F) |
64 bit | 192 bit |
Device | RC4 | ChaCha20 |
---|---|---|
AVX1/AVX2
(Intel and AMD x86) |
Supported | |
Cavium NITROX
(III/V PX processors) |
2048 bit max. |
Device | MD5 | SHA1 | SHA2 | SHA-256 | SHA-384 | SHA-512 |
---|---|---|---|---|---|---|
AVX1/AVX2
(Intel and AMD x86) |
Supported | Supported | Supported | |||
Freescale Kinetis MMCAU
K50, K60, K70, and K80 (ARM Cortex-M4 core) |
Supported | Supported | Supported | |||
STMicroelectronics STM32
F1, F2, F4, L1, W Series (ARM Cortex - M3/M4) |
Supported | Supported | ||||
Microchip PIC32 MX/MZ
(Embedded Connectivity) |
Supported | Supported | Supported | |||
ARMv8 | Supported | |||||
Intel QuickAssist Technology | Supported | Supported | Supported | |||
Freescale NXP LTC | Supported | Supported | ||||
Xilinx Zynq UltraScale+ | Supported |
Device | RSA | ECC | ECC-DHE | Curve25519 | Ed25519 |
---|---|---|---|---|---|
Cavium NITROX
(III/V PX processors) |
512 - 4096 bit | NIST Prime
192, 224, 256, 384, 521 |
|||
Microchip/Atmel
ATECC508A (compatible with any MPU or MCU including: Atmel SMART and AVR MCUs) |
256 bit
(NIST-P256) |
||||
Intel QuickAssist Technology | 512 - 4096 bit | 128, 256 bit | |||
Freescale NXP LTC | 512 - 4096 bit | 128, 256 bit | 128, 256 bit | 256 bit | 256 bit |
Xilinx Zynq UltraScale+ | 2048 - 4096 bit |
Device | HMAC-MD5 | HMAC-SHA1 | HMAC-SHA2 | HMAC-SHA256 | SHA-3 | Poly1305 |
---|---|---|---|---|---|---|
AVX1/AVX2
(Intel and AMD x86) |
Supported | |||||
Cavium NITROX
(III/V PX processors) |
Supported | Supported | Supported | Supported | ||
Microchip PIC32 MX/MZ
(Embedded Connectivity) |
Supported | Supported | Supported | |||
Intel QuickAssist Technology | Supported | Supported |
Device | RNG |
---|---|
STMicroelectronics STM32
F1, F2, F4, L1, W Series (ARM Cortex - M3/M4) |
Supported |
Cavium NITROX
(III/V PX processors) |
Supported |
Nordic NRF51 Archived 2018-06-19 at the Wayback Machine
(Series SoC family, 32-bit ARM Cortex M0 processor core) |
Supported |
Licensing[]
wolfSSL is Free Software, licensed under the GNU General Public License GPLv2.[16]
See also[]
- Transport Layer Security
- Comparison of TLS implementations
- Comparison of cryptography libraries
- GnuTLS
- Network Security Services
- OpenSSL
References[]
- ^ "wolfSSL ChangeLog".
- ^ "wolfSSL ChangeLog". 2021-07-16. Retrieved 2021-07-16.
- ^ Jump up to: a b wolfSSL - Embedded Communications Products
- ^ "What You Need to Know About the TLS 1.3 Protocol and wolfSSL's SSL/TLS Libraries". www.allaboutcircuits.com. Retrieved 2018-12-28.
- ^ "wolfSSL Embedded SSL/TLS Library | wolfSSL Products". Retrieved 2019-01-31.
- ^ OpenSSL: Source, License
- ^ wolfSSL - License
- ^ "MySQL, Building MySQL with Support for Secure Connections". Archived from the original on 2017-07-06. Retrieved 2016-06-12.
- ^ Daniel Stenberg, founder and Chief Architect of cURL, joins wolfSSL
- ^ wolfSSL - Docs | CyaSSL Manual - Chapter 4 (Features)
- ^ "wolfSSL 3.6.6 is Now Available".
- ^ wolfSSL - Docs | wolfSSL Manual - Chapter 10 (wolfCrypt Usage Reference)
- ^ Kerberos: The Network Authentication Protocol
- ^ Jump up to: a b NTRU CryptoLabs Archived 2013-02-02 at archive.today
- ^ wolfSSL - wolfSSL with Intel® SGX
- ^ GNU License
External links[]
- C (programming language) libraries
- Cryptographic software
- Transport Layer Security implementation