Is Key Store Medium Security Allowed application control policy rule
This rule specifies whether an application can access key store items that are stored at the medium security level. The application must prompt a BlackBerry® device user for the key store password when it tries to access the private key for the first time or when the private key password timeout expires.
If you configure the Minimal Signing Key Store Security Level and the Minimal Encryption Key Store Security Level IT policy rules to use the high security level, this rule does not apply. A BlackBerry device prompts the user for the key store password each time that an application tries to access the private key.