Nortel SMC 2450, Implementation Manual

Page: 42 / 262

Page 42 of 260 Description
553-3001-225 Standard 1.00 May 2006
is unique to the public key and the public key to key fingerprint match
authenticates the SMC to the IP phone..
IMPORTANT!
Public key fingerprints are currently exported as both 16- and
32-character hexadecimal strings; however, only the 16-character string
is currently employed to configure the IP phones. Future SMC releases
will use the 32-character string.
Examples:
16 characters: 9d581d2cca15141b
32 characters: 9d581d2cca15141b80623a942a59d7d3
Table 1
RSA key types
Key Description
Server private key The SMC maintains a 1024-bit RSA private key,
which is used to initiate the secure UNIStim key
exchange. After the UNIStim IP phone sends the
initial "Hello" message to the SMC, the SMC
responds by sending the public key to the client.
The client then generates a fingerprint of the
public key and compares the result to the public
key fingerprint entered into the UNIStim IP phone
by the user. If they match, the UNIStim IP phone
is assured it is talking to the correct server.