FileMaker 16 added a variety of new features designed to support its new ability to interact with web services using JSON. One of those supporting features was the addition of more cryptographic functionality.
Previously, the only native feature available was an MD5 hash. At the time of it being added, it was already out of fashion as a security based feature, but it could be used to compare two things against each other.
By adding new encryption and decryption capabilities, we are now able to encrypt and decrypt data directly within the database itself. This means we can, if desired (and your security policies allow it), store things like credit cards and other sensitive information. While the functions themselves are pretty straight-forward, it’s always nice to know the ins-and-outs of how to implement a feature properly.
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Source: FileMaker Magazine