APC Battery Management System User Manual download pdf (Page 132)

USER’S GUIDE

Battery Management System

125

consequently a higher level of security than the public key used in

Method 1 (This longer encryption key is also used in Method 2.)

– The server certificate that you upload to the Management Card

enables SSL to authenticate that data are being received from and

sent to the correct Management Card. This provides an extra level

of security beyond the encryption of the user name, password, and

transmitted data.

– The browser matches the digital signature on the server certificate

that you uploaded to the Management Card with the signature on

the CA root certificate that is already in the browser’s certificate

cache to provide additional protection from unauthorized access.

• Disadvantages:

– Setup requires the extra step of requesting a signed root certificate

from a Certificate Authority.

– An external Certificate Authority may charge a fee for providing

signed certificates.

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APC Battery Management System User Manual Page 132