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USER’S GUIDE
Battery Management System
123
– The length of the public key (RSA key) that is used for encryption
when setting up an SSL session is 1024 bits, providing more
complex encryption and consequently a higher level of security than
the public key used in Method 1. (This longer encryption key is also
used in Method 3.)
– 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 root certificate that you install to the browser enables the
browser to authenticate the Management Card’s server certificate to
provide additional protection from unauthorized access.
• Disadvantage:
Because the certificates do not have the digital signature of a
commercial Certificate Authority, you must load a root certificate
individually into the certificate store (cache) of each user’s
browser. (Browser manufacturers already provide root certificates
for commercial Certificate Authorities in the certificate store within
the browser. See Method 3.)