8 jan 2014 kl. 01:24 skrev Dylan Herman <herma...@pascack.k12.nj.us>:
> Thank you for responding. > > I already have the libsrtp on my system, I believe, since I have the same > files that were on the libsrtp github. Are you saying that I could just write > my code in one of the scripts with the encryption algorithms leaving it under > its original name of the algorithm? Such as aes.c, aes_cbc.c... I think you need to learn more about the standards and how SRTP is negotiated before you do anything. What you need to do is to come up with a name and a tag for negotiation in the SDP offer/answer process. If this is successfully negotiated you engage your crypto code. You need to add code, not replace code. /O > > > > >>> "Olle E. Johansson" <o...@edvina.net> 01/07/14 9:39 AM >>> > > On 07 Jan 2014, at 15:12, Dylan Herman <herma...@pascack.k12.nj.us> wrote: > >> Hello, >> >> >> I have a question regarding sRTP with Asterisk. I posted this question on >> the Asterisk wiki and was suggested to post it on the Developer mailing >> list. I am working on an encryption project. The project consists of using >> my own encryption method to encrypt SIP phone calls using an Asterisk >> server-server connection. I was wondering where the algorithm that sRTP uses >> to encrypt RTP is located, so I can modify the code to utilize my own >> algorithm. I was told it is not in the Asterisk source code. >> > The names of the algorithms used in Asterisk is hard coded in Asterisk's srtp > code. The rest of the implementation is in the libsrtp library hosted on > github. > > Recently libsrtp added an option to use OpenSSL encryption, which is better > for some government installations as OpenSSL is usually approved. I don't > think we use that option in Asterisk. > > /O > --- * Olle E Johansson - o...@edvina.net * Cell phone +46 70 593 68 51, Office +46 8 96 40 20, Sweden
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