Configuring Security Features
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is the same as the decryption key.
Asymmetric encryption: For asymmetric encryption, each user has a pair of cryptographic
keys – a public encryption key and a private decryption key. The information encrypted by
the public key can only be decrypted by the corresponding private key and vice versa.
Usually, the receiver keeps its private key. The public key is known by the sender, so the
sender sends the information encrypted by the known public key, and then the receiver
uses the private key to decrypt it.
IP phones support TLS version 1.0, 1.1 and 1.2. A cipher suite is a named combination of
authentication, encryption, and message authentication code (MAC) algorithms used to
negotiate the security settings for a network connection using the TLS/SSL network protocol. IP
phones support the following cipher suites:
DHE-RSA-AES256-SHA
DHE-DSS-AES256-SHA
AES256-SHA
EDH-RSA-DES-CBC3-SHA
EDH-DSS-DES-CBC3-SHA
DES-CBC3-SHA
DES-CBC3-MD5
DHE-RSA-AES128-SHA
DHE-DSS-AES128-SHA
AES128-SHA
RC2-CBC-MD5
IDEA-CBC-SHA
DHE-DSS-RC4-SHA
RC4-SHA
RC4-MD5
RC4-64-MD5
EXP1024-DHE-DSS-DES-CBC-SHA
EXP1024-DES-CBC-SHA
EDH-RSA-DES-CBC-SHA
EDH-DSS-DES-CBC-SHA
DES-CBC-SHA
DES-CBC-MD5
EXP1024-DHE-DSS-RC4-SHA
EXP1024-RC4-SHA
EXP1024-RC4-MD5
EXP-EDH-RSA-DES-CBC-SHA
EXP-EDH-DSS-DES-CBC-SHA