encrypt data in SQL database by c#

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How encrypt a column in SQL database by c# and search them by using like'%%' instead of equal?

For example I have a column by'c1' name and column data are encrypted. Now how I can use this query?
Query:
Select * from [ table ] where [c1] like '%any thing%'

Posted 28-Jul-14 22:59pm

saber rezaii magham

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Sid_Joshi · Accepted Answer · 2014-07-28T23:11:00

Solution 1

U Have to first define encrypt() and decrypt() functions in sql and while searching any thing you should use decrypt() function to match your word.

Posted 28-Jul-14 23:11pm

Sid_Joshi

Comments

saber rezaii magham 29-Jul-14 5:14am

Yes this is true,
But I don't know how define encrypt() and decrypt() function in SQL and then call them in c#?

Sid_Joshi 29-Jul-14 5:21am

find ascii number of each character and add a specific number to that character ascii number, you will get new number and new encrypted character with that numbar

Sid_Joshi 29-Jul-14 5:23am

ex select ASCII ('a') you will get 97 as ascii number add 50 in that numbar character will automatically encrypt

saber rezaii magham 29-Jul-14 5:27am

Thank you!
This is a very good and simple way.
So I must build a new encrypt/decrypt algorithm for my self.