<div dir="ltr"><div><div>Hi,<br><br></div>Have you checked this:<br><br><a href="https://freeswitch.org/confluence/display/FREESWITCH/rtp_secure_media">https://freeswitch.org/confluence/display/FREESWITCH/rtp_secure_media</a><br><br></div>With kind regards,<br></div><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr">Jurijs<br></div></div></div>
<br><div class="gmail_quote">On Thu, Mar 15, 2018 at 2:03 PM, Bipin Patel <span dir="ltr"><<a href="mailto:bipin@xbipin.com" target="_blank">bipin@xbipin.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div text="#000000" bgcolor="#FFFFFF">
<font size="-1"><font face="Arial">hi,<br>
<br>
is it possible to force a selected crypto for SRTP as i cant
seem to find a way to force a crypto to the user such that is
phone uses that for media, secondly i see zoiper sends the below
in SDP<br>
<br>
a=crypto:5 AES_256_CM_HMAC_SHA1_80
inline:854nJNIKSyhr0sJs+Ol+<wbr>Qv2eSqC2gnydK8iVHUAXb4Xx7oW8iM<wbr>M2jVi7R9xV6A==<br>
a=crypto:6 AES_256_CM_HMAC_SHA1_32
inline:854nJNIKSyhr0sJs+Ol+<wbr>Qv2eSqC2gnydK8iVHUAXb4Xx7oW8iM<wbr>M2jVi7R9xV6A==<br>
a=crypto:3 AES_192_CM_HMAC_SHA1_80
inline:854nJNIKSyhr0sJs+Ol+<wbr>Qv2eSqC2gnydK8iVHUAXb4Xx7oW8iM<wbr>M=<br>
a=crypto:4 AES_192_CM_HMAC_SHA1_32
inline:854nJNIKSyhr0sJs+Ol+<wbr>Qv2eSqC2gnydK8iVHUAXb4Xx7oW8iM<wbr>M=<br>
a=crypto:1 AES_CM_128_HMAC_SHA1_80
inline:854nJNIKSyhr0sJs+Ol+<wbr>Qv2eSqC2gnydK8iVHUAX<br>
a=crypto:2 AES_CM_128_HMAC_SHA1_32
inline:854nJNIKSyhr0sJs+Ol+<wbr>Qv2eSqC2gnydK8iVHUAX<br>
<br>
where as FS always uses the below only<br>
<br>
switch_core_media.c:1484 Found suite AES_CM_128_HMAC_SHA1_80<br>
<br>
and also i noticed FS and zoiper have some variations in crypto
names such as<br>
<br>
switch_core_media.c:1479 looking for crypto suite
[AES_CM_192_HMAC_SHA1_32] in [4 AES_192_CM_HMAC_SHA1_32<br>
<br>
and this never matches and never used at all (notice the
placement of CM_192 in FS whereas zoiper has 192_CM)<span class="HOEnZb"><font color="#888888"><br>
<br>
<br>
</font></span></font></font><span class="HOEnZb"><font color="#888888">
<div class="m_2056731061696904923moz-signature">-- <br>
Regards,<br>
Bipin<br>
<br>
<br>
<hr>
</div>
</font></span></div>
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