Reference > Functions reference > Container functions > CryptDigest


Returns a binary hash value generated by the specified cryptographic hash algorithm.


CryptDigest ( data ; algorithm )


data - any text expression or field from which to generate the hash.

algorithm - the name of the cryptographic algorithm to use (see CryptAuthCode function).

Data type returned 


Originated in 

FileMaker Pro 16.0


Use the Base64EncodeRFC and Base64Decode or HexEncode and HexEncode functions to control the encoding of the returned hash.


This function is not supported in runtime solutions and returns "?".

Example 1 

In the Results container field, stores a file containing the digest of the text in the Message field using the default algorithm.

Set Field [ Table::Results ; CryptDigest ( Table::Message ; "" ) ]

Example 2 

Returns a digest of the contents of the $JSON variable using the SHA512 algorithm. The container data returned by CryptDigest is returned as Base64-encoded text.

Base64EncodeRFC ( 4648; CryptDigest ( $JSON ; "SHA512" ) )

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