How to return the SHA1 hash value of a string in SQL Server ?

Published on September 1, 2016 by abundantcode

Filed under SQL Server

Last modified September 1, 2016

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SQL Server provides a function HashBytes function that returns the SHA1 , MD2 , MD4 and few other hash value of the specified input.

How to return the SHA1 hash value of a string in SQL Server ?

Just pass the ‘SHA1’ as the first parameter and the input as second parameter value to the HashBytes function to get the SHA1 hash value.

DECLARE @input nvarchar(max);
SELECT @input = CONVERT(nvarchar,'Welcome to');
SELECT HashBytes('SHA1', @input);


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