Tracking this here because PIM Manager might have to be involved with setting up/unlocking encrypted EDS address books.
1. Encrypt only the vCard data.
2. Encrypt the entire DB, including indices.
I assume that option 1 is not good enough, because an attacker may be
able to reconstruct contact strings from the indices.
Perhaps http://sqlcipher.net/ is a suitable solution for whole-DB encryption. Needs further discussion.
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