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Optimal length of exposed text encrypted property

SA-44898

Summary



The requirement is to determine the optimal length when exposing a text encrypted property for reporting.


Error Messages



Not Applicable


Steps to Reproduce



Expose the text encrypted property.


Root Cause



Unknown


Resolution



Here’s the explanation for the reported behavior:

The number of bytes allocated for encrypted text must be equivalent to the length of the clear text value. The content of the clear text is also a factor. Generally, for 32-64 byte clear text, 255 characters is sufficient.

If the column size is not large enough to hold the entire encrypted value, it must be truncated similar to an unencrypted value. The truncated encrypted value fails trying to decrypt.


Suggest Edit

Published February 3, 2018 - Updated October 8, 2020

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