For example, when a user browses to a secure web site that uses a 160-bit ECC key in its certificate, the BlackBerry device prompts
the user to trust the web site. If the user trusts the web site and selects the Don't Ask Again option, the minimum key size on the
BlackBerry device is configured to 160 bits. If you configure the minimum key size on the BlackBerry Enterprise Server to 233
bits, the BlackBerry device continues to prompt the user to trust every secure web site that uses a key size in its certificate that
is less than 233 bits.
Minimum requirements
•
Java® based BlackBerry device
•
BlackBerry® Application Suite version 1.0
•
BlackBerry® Connect™ version 4.0
•
BlackBerry® Device Software version 3.6.1
•
BlackBerry Enterprise Server version 3.6
TLS Minimum Strong RSA Key Length IT policy rule
Description
This rule specifies the minimum RSA® key size (in bits) to use over TLS connections. The permitted range is 512 through 4096 bits.
Default value
The default value on the BlackBerry® device is 1000 bits.
The default value on the BlackBerry® Enterprise Server is 512 bits.
Usage
If you configure the minimum key size on the BlackBerry Enterprise Server to be higher than the minimum key size on the
BlackBerry device, the BlackBerry device continues to prompt the user to trust every secure web site that uses a key size in its
certificate that is less than the minimum key size on the BlackBerry Enterprise Server.
For example, when a user browses to a secure web site that uses a 512-bit RSA key in its certificate, the BlackBerry device prompts
the user to trust the web site. If the user trusts the web site and selects the Don't Ask Again option, the minimum key size on the
BlackBerry device is configured to 512 bits. If you configure the minimum key size on the BlackBerry Enterprise Server to 2048
bits, the BlackBerry device continues to prompt the user to trust every secure web site that uses a key size in its certificate that
is less than 2048 bits.
Minimum requirements
•
Java® based BlackBerry device
•
BlackBerry® Application Suite version 1.0
•
BlackBerry® Connect™ version 4.0
•
BlackBerry® Device Software version 3.6.1
•
BlackBerry Enterprise Server version 3.6
Policy Reference Guide
TLS Application policy group
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