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2.2.13 ABF_DELTA_TRAILER Structure

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BaseFileHash

Hash

NumberOfContacts

NumberOfDeletedContacts

Hash (2 bytes): A 16-bit unsigned number that is a hash of the contents of the file. Any cryptographic hash function can be used, as long as it is the same function for all files. For an example of a hash function, see section 6.

BaseFileHash (2 bytes): A 16-bit unsigned number that is a hash of the contents of the base file that was used to calculate this delta file. Any hash function used can be used, but it MUST be the same function for all files. For an example of a hash function, see section 6.

NumberOfContacts (4 bytes): A 32-bit unsigned number that is the number of ABF_CONTACT structures in the file. Does not include the sentinel ABF_CONTACT structure (Id and NumberOfAttributes fields all zeros).

NumberOfDeletedContacts (4 bytes): A 32-bit unsigned number that is the number of ABF_CONTACT structures in the file that identify deleted contacts.

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