SIP Security in Yate

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(SRTP Cryptographic Contexts)
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Each SRTP stream requires the sender and receiver to maintain cryptographic state information. This information is called the "cryptographic context".
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Each SRTP stream requires the sender and receiver to maintain cryptographic state information. This information is called the ''cryptographic context''.
  
 
SRTP uses two types of keys:
 
SRTP uses two types of keys:

Revision as of 15:42, 14 November 2012

Yate can bind on UDP, TCP and TLS. This is done using a listener that it is a specific section in ysipchan.conf.

SIP secure it is done by building a TLS listener. Yate will bind on TLS with SRTP.

How to set a TLS listener

In ysipchan.conf:

[listener listener-tls]
type=tls
addr=x.x.x.x
port=5061
sslcontext=server_context

Configure a SSL server context

In openssl.conf

[server_context]
enable=yes
certificate=name.crt
key=name.key

The files name.crt and name.key have to be in the same place as the configuration file in this example.

SRTP Cryptographic Contexts

Each SRTP stream requires the sender and receiver to maintain cryptographic state information. This information is called the cryptographic context.

SRTP uses two types of keys:

  • session keys(e.g., encryption or message authentication)
  • master keys - a random bit string (given by the key management protocol)

See also

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