Last week we talked about wolfSSL’s custom I/O handling and how to set it up. The following discussion assumes the I/O callbacks are reading and writing into buffers rather calling send() or recv(). A tricky situation is during the handshake. When calling wolfSSL_connect(), the client will send cipher text first and try to receive a […]
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Don`t forget about Valgrind
One of our favorite tools at yaSSL is valgrind: http://valgrind.org . Originally a memory error detector, it`s now an instrumentation framework for dynamic analysis that also does thread error detection, cache and branch-prediction profiling, and heap profiling. If you`ve never used it, you should. If you are using it, you should probably be using it more. […]
Read MoreMore TagCTaoCrypt on TinyOS with TinyPKC
One of our community members recently ported CTaoCrypt’s RSA and ECC code to the TinOS operating system in a project called TinyPKC (http://www-db.in.tum.de/~kothmayr/tinypkc/). TinyPKC was tested on 16-bit and 32-bit microcontroller platforms and should run on 8-bit platforms as well. It supports ECC key lengths from 112 bits to 521 bits and arbitrary RSA key lengths. […]
Read MoreMore TagyaSSL Partnership Program
yaSSL believes that business and technology partnerships are one of the keys to fostering success. Such partnerships can come in many forms – be that business, technical, or community based, and work for both open source or commercial solutions. To date, we have partnered with several companies, and are always looking for new partnerships. To […]
Read MoreMore TagDark Reading describes the top ten mobile security issues of 2012
Hi! This top ten list crossed our desk today and we thought it was worthwhile to share with our users. Combating MITM attacks and properly implementing SSL/TLS are on the list again this year. https://www.darkreading.com/top-mobile-vulnerabilities-and-exploits-of-2012/d/d-id/1138833
Read MoreMore TagwolfSSL Custom I/O Setup
wolfSSL provides a mechanism to plug in your own application specific I/O routines. By default, the library uses functions that call the system’s recv() and send() functions with a file descriptor cached with the function wolfSSL_set_fd(). The prototypes for the I/O routines are: int CBIORecv(CYASSL* ssl, char* buf, int sz, void* ctx); int CBIOSend(CYASSL* ssl, […]
Read MoreMore TagUsing Cryptographic Hashes for Hash Tables
Choosing a good hash function for a hash table is difficult to say the least. Even if you can achieve good distribution and performance for a given hash function it`s still most likely dependent on table size and the type of input. Resizing the table or getting unexpected input can quickly turn an otherwise good […]
Read MoreMore TagwolfSSL support for Green Hills INTEGRITY RTOS
Are you interested in using the wolfSSL lightweight SSL library on the Green Hills INTEGRITY RTOS? Although wolfSSL doesn’t currently have INTEGRITY support, we would like to gauge user and community interest to help us plan our schedule for the upcoming year. If you would like to see INTEGRITY support added to wolfSSL, please let […]
Read MoreMore TagyaSSL 2012 Annual Report
Business and Company Progress • We doubled our customer base again this year and dramatically increased revenues, confirming the usefulness of our technology, our open source strategy, and our relevance in the emerging device security and BYOD markets. • We have further penetrated key vertical markets, including home appliances, smart metering, sensors, M2M, gaming, VoIP, […]
Read MoreMore TagwolfSSL Lightweight SSL in 20 kB with Lean PSK
Are you interested in using the wolfSSL embedded SSL library in an extremely resource constrained environment? If so, you may be interested to hear that we have recently implemented a wolfSSL “Lean PSK” build which enables the wolfSSL library to be built with a footprint size of 20kB! The “Lean PSK” build requires the use […]
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