Encrypting Data With the Encrypt Function

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Encrypting Data With the Encrypt Function

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Brian Knight

Posted Sunday, July 15, 2001 12:00 AM

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Comments posted to this topic are about the content posted at http://www.sqlservercentral.com/columnists/bknight/encryptfunction.asp

Brian Knight
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Post #578

gvphubli

Posted Sunday, July 15, 2001 11:01 PM

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Encrypt function in T-SQL is fine what about Decryption of encrytion columns.
kindly tell us how to do it!

Post #20034

Brian Knight

Posted Monday, July 16, 2001 7:23 AM

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quote:

Encrypt function in T-SQL is fine what about Decryption of encrytion columns.
kindly tell us how to do it!

As I mentioned in the article, the only way to decrypt is with a comparion techinque with a WHERE clause. That's why if you would like to use a more advanced encryption/decryption system, you may have to resort to COM. Les Smith will be having some excellent articles coming out this week and next about how to use this.

Brian Knight
bknight@sqlservercentral.com
http://www.sqlservercentral.com/columnists/bknight

Brian Knight
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Post #20035

Santosh Benjamin

Posted Thursday, July 19, 2001 11:32 AM

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Supposing im creating a personnel database and want to store national insurance numbers etc , i want this to be encrypted in the table., But throught the client application front end , a personnel details administrator should be able to see the unencrypted data .. how would i do this ?

Santosh Benjamin

Santosh Benjamin

Post #20036

MudLuck

Posted Monday, July 30, 2001 12:49 PM

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This function does not exsist in 2000.
So inless your living in the Stone age move on.

Post #20037

Brian Knight

Posted Tuesday, July 31, 2001 10:40 AM

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quote:

Supposing im creating a personnel database and want to store national insurance numbers etc , i want this to be encrypted in the table., But throught the client application front end , a personnel details administrator should be able to see the unencrypted data .. how would i do this ?

Your best bet then would be to create some type of custom middle-ware that encrypts/decrypts your data. Les Smith (http://www.sqlservercentral.com/columnists/lsmith) has developed a few methods on doing this. You can use these to get ideas. You could possibly create a user defined function to do something like this as well. Possibly wrap an extended stored procedure into it to encrypt/decrypt it.

Brian Knight
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Brian Knight
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Post #20039

ians

Posted Tuesday, August 07, 2001 3:49 AM

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I'm suprised noone has mentioned xp_crypt :-

http://www.vtc.ru/~andrey/xp_crypt/

Post #20040

Sean Burke

Posted Tuesday, August 07, 2001 8:18 PM

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Now that's a cool tool. Frebbie's not too bad, and $98.00 for the full version seems a fair price for someone who needs this functionality! Are you connected with the author?

Post #20041

ians

Posted Thursday, August 09, 2001 10:36 AM

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quote:

Are you connected with the author?

No, in fact I haven't even tried using it myself yet. I cant even remember when I found it, but have keep a bookmark to it, I'm sure it will come in usefull one day.

Post #20042

Dinesh Priyankara

Posted Wednesday, September 12, 2001 3:47 AM

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I have little doubt about this. Though data is encrypted, that can be read easily.
If I inserted data like 'app' with encryption, that is shown as 'a[Odd Char]p[Odd Char]p[Odd Char]'.
I highly appreciate your reply.

Post #20043

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