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stunnel support for TLS 1.3 using wolfSSL

Did you know that wolfSSL maintains a port of stunnel which includes wolfSSL support, and now supports TLS 1.3?

What is stunnel?

stunnel is a lightweight TLS proxy, designed to add SSL/TLS encryption to unsecured applications without changes to the program’s source code.  Licensed under GNU GPLv2 and with an alternative commercial option, stunnel can be utilized to secure a host of different applications, including: mail exchange (SMTP, IMAP, POP3), web hosting (HTTP), remote shell, and virtually any other unprotected protocol desired.

TLS 1.3 Support!

Porting stunnel to use wolfSSL’s embedded SSL/TLS library means taking advantage of wolfSSL’s minimal footprint and high speed crypto implementation to increase performance and decrease required resources when compared to other SSL/TLS libraries. Not only that, but using wolfSSL with stunnel combines these benefits with the peace of mind that your application is secured by a progressive, transparent, and stable SSL/TLS library – known for its quality, integrity and efficiency.

The wolfSSL embedded SSL/TLS now includes support for TLS 1.3, which gives stunnel+wolfSSL users access to TLS 1.3!  TLS 1.3 improves upon the SSL/TLS protocol by removing old insecure algorithms and changing the TLS handshake to increase security and reduce round trips.

To build wolfSSL for use with stunnel and TLS 1.3 support, simply configure wolfSSL with:

$ ./configure --enable-stunnel --enable-tls13

from wolfSSL`s main directory, then make and make install.

For a version of stunnel that links to the wolfSSL library, and for more information, contact us at facts@wolfssl.com.

wolfCrypt v4.0 FIPS 140-2 Certificate News

Good news from wolfSSL Inc! The upcoming update to our cryptography library, wolfCrypt v4.0, is on the NIST CMVP Modules in Process list and is in the Coordination phase. Our FIPS 140-2 revalidation certificate is just around the corner. Included on the new certificate will be key generation of RSA, ECC, DH keys; SHA-3 and HMAC with SHA-3; CMAC; AES-GCM with internally generated IVs and externally supplied IVs; and use of RDSEED, AES-NI, and AVX1/2 with Intel processors. All the algorithms from our original certificate #2425 are also included. For more information about our new FIPS 140-2 certificate, please contact us at fips@wolfssl.com.

wolfSSH v1.3.0 Released

wolfSSL has released wolfSSH v1.3.0 to the public! Included in this release are two major features, SCP and SFTP. wolfSSH can now act as a server for copying files with SCP. We can also act like a client or server for SFTP connections! Now you can copy new firmware or configuration files to your embedded device with the ease of a file copy.

Also included are several small bug fixes and improvements.

wolfSSH was developed to with work with our wolfCrypt cryptography library. If you want FIPS 140-2, wolfSSH will seamlessly work with the FIPS version of wolfCrypt.

For more information about wolfSSH, wolfSSL, or wolfCrypt, please email facts@wolfssl.com or contact sales@wolfssl.com. If you want to know more about wolfSSH with wolfCrypt FIPS, contact fips@wolfssl.com.  You can download wolfSSH 1.3.0 today from our download page!

wolfSSL Intel SGX (#SGX) + FIPS 140-2 (#FIPS140)!

wolfSSL is pleased to announce the following addition to the wolfSSL FIPS certificate!

Debian 8.7.0 Intel ® Xeon® E3 Family with SGX support Intel®x64 Server System R1304SP
Windows 10 Pro Intel ® Core TM i5 with SGX support Dell LatitudeTM 7480

The wolfCrypt FIPS validated cryptographic module has been validated while running inside an Intel SGX enclave and examples have been setup for both Linux and Windows environments.

Intel ® SGX (Software Guard Extensions) can be thought of as a black-box where no other application running on the same device can see inside regardless of privilege. From a security standpoint this means that even if a malicious actor were to gain complete control of a system including root privileges, that actor, no matter what they tried, would not be able to access data inside of this “black-box”.

An Intel enclave is a form of user-level Trusted Execution Environment (TEE) which can provide both storage and execution. Meaning one can store sensitive information inside and also move sensitive portions of a program or an entire application inside.

While testing, wolfSSL has placed both individual functions and entire applications inside the enclave. One of the wolfSSL examples shows a client inside the enclave with the only entry/exit points being “start_client”, “read”, and “write”. The client is pre-programmed with a peer to connect with and specific functionality. When “start_client” is invoked it connects to the peer using SSL/TLS and executes the pre-programmed tasks where the only data entering and leaving the enclave is the info being sent to and received from the peer. Other examples show placing a single cryptographic operation inside the enclave, passing in plain-text data and receiving back encrypted data masking execution of the cryptographic operations.

If you are working with SGX and need FIPS validated crypto running in an enclave contact us at fips@wolfssl.com or support@wolfssl.com with any questions. We would love the opportunity to field your questions and hear about your project!

Resources:
https://software.intel.com/en-us/blogs/2016/12/20/overview-of-an-intel-software-guard-extensions-enclave-life-cycle

wolfSSL FAQ page

The wolfSSL FAQ page can be useful for information or general questions that need need answers immediately. It covers some of the most common questions that the support team receives, along with the support team's responses. It's a great resource for questions about wolfSSL, embedded TLS, and for solutions to problems getting started with wolfSSL.

To view this page for yourself, please follow this link here.

Here is a sample list of 5 questions that the FAQ page covers:

  1. How do I build wolfSSL on ... (*NIX, Windows, Embedded device) ?
  2. How do I manage the build configuration of wolfSSL?
  3. How much Flash/RAM does wolfSSL use?
  4. How do I extract a public key from a X.509 certificate?
  5. Is it possible to use no dynamic memory with wolfSSL and/or wolfCrypt?

Have a  question that isn't on the FAQ? Feel free to email us at support@wolfssl.com.

wolfSSL Example Applications

wolfSSL has some example applications located in a GitHub repository that many users find helpful when getting started with using wolfSSL. Some of the example applications cover using wolfSSL with Android, µTasker, X509 field extraction, and DTLS.

Below are some more details on the examples provided by wolfSSL:

  • android (Android NDK)
    This directory contains examples that demonstrate using wolfSSL and wolfSSLJNI on the Android platform, using the Android NDK toolchain.
  • btle
    This directory contains examples for securing a Bluetooth Low Energy Link (BTLE). BTLE packets are small and throughput is low, so these examples demonstrate a way to exchange data securley without BTLE pairing.
  • certfields (X509 field extraction)
    This directory contains an example that demonstrate using the wolfSSL to read a DER encoded certificate and extract the public key and subject name information.
  • certgen
    Contains examples on how to generate and sign certificates
  • certmanager (wolfSSL CertManager)
    This directory contains examples that demonstrate using the wolfSSL CertManager (Certificate Manager) functionality.
  • crypto
    The Crypto directory contains example applications showing how to perform 3DES, AES, Camellia, PKCS#12 encryption, and ECC key storage/loading.
  • custom-io-callbacks
    This directory demonstrates how the custom IO callbacks can be used to facilitate a TLS connection using any medium.
  • dtls (Datagram TLS)
    This directory contains examples of using DTLS, with client and server examples demonstrating UDP, DTLS, non-blocking, session resumption, and multi-threading.
  • ecc
    Various Elliptic Curve Cryptography (ECC) examples including signing, verifying, decoding, and more.
  • pkcs7
    PKCS7 verification example
  • psk
    This directory contains examples of using PSK, with client and server examples demonstrating TCP/IP, PSK, non-blocking, session resumption, and multi-threading.
  • SGX_Linux
    This directory contains an example application, written in C, which demonstrates how to link with the wolfSSL lightweight SSL/TLS library with a simple Enclave using Linux.
  • SGX_Windows
    This directory contains an example application, written in C, which demonstrates how to link with the wolfSSL lightweight SSL/TLS library with a simple Enclave using Windows.
  • signature
    This directory contains a simple example of using wolfSSL to sign and verify binary data. It supports RSA and ECC for signing and MD2, MD4, MD5, SHA, SHA256, SHA384 and SHA512.
  • tls
    This directory contains examples of using SSL/TLS, with client and server examples demonstrating TCP/IP, SSL/TLS, non-blocking, session resumption, and multi-threading.
  • utasker (µTasker wolfSSL example tasks)
    Example µTasker client and server tasks that demonstrate using wolfSSL with the µTasker stack. These have been tested on the µTasker Simulator.
  • wolfCLU (wolfSSL Command Line Utility)
    This is a tool to provide command line access to wolfcrypt cryptographic libraries. wolfSSL command line utility will allow users to encrypt or decrypt a user specified file to any file name and extension.

The wolfSSL example applications can be downloaded using a git-clone command from the GitHub repository here: https://github.com/wolfSSL/wolfssl-examples

In addition, the README contains extra information about each example application and can be viewed here: https://github.com/wolfSSL/wolfssl-examples/blob/master/README.md. Some of the example application directories may also include an extra README as well, if the steps to run the examples are more complex.

If having trouble, feel free to contact support or view more information on contacting the wolfSSL team here: https://www.wolfssl.com/contact/.

Upcoming wolfTPM Support for ST33 TPM 2.0

wolfSSL will soon be adding support for the ST33 secure microcontroller to wolfTPM!  The ST33 includes an ARM® SecurCore® SC300 32-bit RISC processor, which provides a Secure Element.  From the ST33 webpage:

The device features hardware accelerators for advanced cryptographic functions. The EDES peripheral provides a secure DES (Data Encryption Standard) algorithm implementation, while the NESCRYPT cryptoprocessor efficiently supports the public key algorithm. The AES peripheral ensures secure and fast AES algorithm implementation.

If you are interested in using wolfTPM in your project, or using wolfTPM with the STM33 or ARM® SecurCore® SC300, contact us today at facts@wolfssl.com!  In recent news, wolfSSL recently released a new version of wolfTPM that now supports TLS from the wolfSSL embedded SSL/TLS library.  Learn more here!

Announcing wolfTPM v1.3 with TLS support

We are excited to announce wolfTPM v1.3, which adds support for TLS client, Certificate Signing Request (CSR) generation, PKCS #7 signing and verification and benchmarks. In addition to the features listed this release fixes some minor issues and adds in more wrappers for simplifying usage.

You can download the latest release from our website here:
https://www.wolfssl.com/products/wolftpm/

wolfTPM v1.3 (07/20/2018) Release Notes:

  • Fixed the TIS TPM_BASE_ADDRESS to conform to specification.
  • Fixed static analysis warnings.
  • Fixed minor build warnings with different compilers.
  • Fixed TPM failure for RSA exponents less than 7 by using software based RSA.
  • Added TPM benchmarking support.
  • Added functions to import/export public keys as wolf format.
  • Added PKCS7 example to show sign/verify with TPM.
  • Added CSR example to generate certificate request based on TPM key.
  • Added CSR signing script ./certs/certreq.sh to create certificate using self-signed CA.
  • Added TLS Client example that uses TPM based key for client certificate.
  • Added support for wolfSSL WOLF_CRYPT_DEV callbacks to enable TPM based ECC and RSA private keys.
  • Added ability to clear/reset TPM using ./examples/wrap/wrap_test 1
  • Moved some of the example configuration into ./examples/tpm_io.h.

For questions please email us at facts@wolfssl.com.

wolfSSL Enables Gesytec to Easily Secure Communications Between Embedded Systems and the Cloud

Gesytec, a global leader in LON interfaces, provides worldwide software and hardware development solutions that focus on the improvement of industrial automation in industries such as restaurants, gas stations, hotels, grocery stores, and food distribution companies. One of Gesytec’s products, the GesySense Receiver \LAN is a device that consists of an embedded system that works to collect and record temperature statistics and relay them to a web-based user platform over a wireless network.

In order to avoid the compromise of data and to prevent potential attacks on the network, it became mandatory that the GesySense device data would need to be encrypted. As Gesytec was using Microchip’s PIC32MX boards, the cryptographic library they required needed to be very efficient in terms of resource usage. After thorough research, Gesytec landed at the conclusion that wolfSSL’s SSL/TLS library would be exactly what they wanted to secure the data from the GesySense device to the web-based platform.

To discover the reasons behind why wolfSSL was the optimal solution for Gesytec, please view the wolfSSL/Gesytec case study on our case studies page.

To learn more about Gesytec and their products, feel free to visit their website or contact them at info@gesytec.com.

For questions regarding the use of wolfSSL products in your embedded or IoT devices, please contact us at facts@wolfssl.com.

TLS 1.3 is now available in wolfSSL's embedded SSL/TLS library! Learn more here and don't forget to check out our product page.

wolfTPM Now Tested Nightly with Infineon OPTIGA (TM) Trusted Platform Module 2.0 SLB 9670

wolfTPM is a portable TPM 2.0 project designed for embedded use.

We have expanded our automated tests to ensure hardware support and functionality for wolfTPM in our commitment to having the best tested cryptography product lineup.  Our Jenkins CI setup now tests the following build configuration every night!

Testing Hardware Setup

  • Raspberry Pi 2 Model B Rev 1.2 (ARMv7 Processor rev 4 (v7l))
  • Infineon OPTIGA (TM) Trusted Platform Module 2.0 SLB 967 (IRIDIUM9670 TPM2.0 LINUX).

wolfTPM Features

  • This implementation provides all TPM 2.0 API’s in compliance with the specification.
  • This uses the TPM Interface Specification (TIS) to communicate over SPI.
  • The design allows for easy portability to different platforms:
  • Native C code designed for embedded use.
  • Single IO callback for hardware SPI interface.
  • No external dependencies.
  • Compact code size and minimal memory use.
  • Examples for the Raspberry Pi and STM32 with CubeMX.
  • Includes example code for most TPM2 native API’s.
  • Includes wrappers for Key Generation, RSA encrypt/decrypt, ECC sign/verify and ECDH.
  • Testing done using the Infineon OPTIGA SLB9670 module and LetsTrust TPM for Raspberry Pi.

Check out how to quickly build wolfSSL and wolfTPM on GitHub.
https://github.com/wolfSSL/wolfTPM

For examples on using the wolfTPM library check out the wrapper and native tests.
https://github.com/wolfSSL/wolfTPM/blob/master/examples/wrap/wrap_test.c
https://github.com/wolfSSL/wolfTPM/blob/master/examples/native/native_test.c

Please send any feedback or questions to us at facts@wolfssl.com

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