Column Encryption Questions

Dec 15, 2006



With SQL Server 2005 encryption:

1. Is it possible to encrypt a column "in place" - or do we always need to create a new varbinary column to hold the encrypted column? Some products (NetLib Encryptionizer) seem to be able to encrypt an existing column in place.

2.If you encrypt an existing column to a new varbinary column, it it customary to then ALTER the table and delete the existing plain-text column?

Thanks...



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SQL 2005 Encryption Questions

Apr 26, 2006

Hello,I have been researching the use of symmetic and asymmetic encryption inSQL 2005 and I am pretty excited to give it a try. Through examples, Ican encrypt the data, but I cant figure out what to do next...What I want:1. our social security field to be encrypted so that only the person(s)that need it can decrypt it.2. prevent DBA's from decrypting the data themselfs3. Simple way to encrypt the data on the table (maybe a trigger?)I thought I would use asymmetric keys, this way I can embed the publickey into my data warehouse process to encrypt the data.I thought I would prompt the user for the private key when the reportruns, that way I wont store the key on the server.This would be a place to start.Someone in the office said that we can store the keys in Activedirectory, so maybe I could make this seemless to the user running thereport?I've found a lot of great articles that got me started, but I amneeding the next stepAny Ideas would be apprecitated!TIARoblinks to articles I have found handy:http://www.databasejournal.com/feat...int.php/3483931http://www.devx.com/dbzone/Article/29232/0/page/3http://www.sqlservercentral.com/col...rintversion.asp

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Jul 20, 2005

How to encrypt a column in a table (i.e. which might contain passwords)?

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Nov 27, 2007

Hi,

I'm trying to encrypt an existing column in my Sql server 2005 Database. The column is a vachar field. How should i go bout with encrpting it without doing any changes in my application code. Neither changing the type of the column field to be encrypted.


Regards

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Encryption Of Column

Mar 1, 2007

Hi,

Is there any possible way, that while I transferring a table from another table, I can specifically encrypt a column? Is there any step on how can I do this?

Need Help Badly

Thanks

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Jun 3, 2001

We are planning to store the pin number in a sqlserver table. This column has to be encrypted and stored in the database. As new records are added this column needs to encrypted automatically. Please advise me of any tools.

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Jun 23, 2004

Are there any UDf's or Xtended stored procs available in sql server 2k that can encrypt a column that has the CC #'s or do I need to purchase a 3rd party tool ?

thanks,
Dinakar

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Apr 17, 2001

Hi
There is a very sensitive table that holds a very sensitive field (i.e. a person's salary). I have a requirement to programmatically encrypt it when the value is stored (I can do that quite easily in the VB client app), but there are times when a suitably 'sa' user should be allowed to perform a SELECT of the table and to view the salary field in the clear.

I think a SQL2000 user-defined function can do the job. The catch is that the client is running SQL 7 and he will only upgrade 'over his dead body', or words to that effect.

Appreciate any ideas you can give!

Cheers & TIA

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Nov 26, 2015

Is there any way i could apply encryption on a varchar type column without changing its datatype to varbinary.

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Mar 29, 2007

I know that it is possible to encrypt data fields in SQL Server 2005, but I can't find anything about data encryption in the Compact Edition. Is this possible?

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Jun 17, 2015

I need to encrypt some column level data in multiple tables in SQL server 2014. I've never tried encryption in SQL server 2014. How can I achieve it?

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Jun 25, 2015

I am trying to implement the column encryption on one of the tables, have used the below link as the reference and got stuck at the last step.

[URL] ....

I have completed the following steps so far.

- CREATE MASTER KEY ENCRYPTION BY PASSWORD = ‘myStrongPassword’

- CREATE CERTIFICATE MyCertificateName
WITH SUBJECT = 'A label for this certificate'

- CREATE SYMMETRIC KEY MySymmetricKeyName WITH
IDENTITY_VALUE = 'a fairly secure name',
ALGORITHM = AES_256,

[Code] .....

Example by using the function

EXEC OpenKeys

-- Encrypting
SELECT Encrypt(myColumn) FROM myTable

-- Decrypting
SELECT Decrypt(myColumn) FROM myTable

When I ran the last command :

-- Decrypting
SELECT Decrypt(myColumn) FROM myTable

I get the following error :

Msg 257, Level 16, State 3, Line 2
Implicit conversion from data type nvarchar to varbinary is not allowed. Use the CONVERT function to run this query.

Where will I use the convert function, in decrypt function or in select statement?

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Oct 7, 2015

I have created two user defined functions for encryption and decryption using passphrase mechanism. When I call encryption function, each time I am getting the different values for the same input. While I searching a particular value, it takes long time to retrieve due to calling decryption function for each row.

best way to encrypt and decrypt using user defined functions.Below is the query which is taking long time.

SELECT ID FROM table WITH (NOLOCK)
                     WHERE dbo.DecodeFunction(column) = 'value'

When I try to use symetric or asymetric encryption, I am not able to put "OPEN SYMETRIC KEY" code in a function. So, I am using PassPhrase mechanism.

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May 11, 2015

I want to enforce a unique constraint on a column which must be encrypted in MSSQL 2005 using Cell Level Encyption (CLE).

    CREATE MASTER KEY ENCRYPTION BY PASSWORD = 'itsaSECRET!!!3£3£3£!!!'
    CREATE CERTIFICATE ERCERT WITH SUBJECT = 'A cert for use by procs'
    CREATE SYMMETRIC KEY ERKEY
    WITH ALGORITHM = AES_256
    ENCRYPTION BY CERTIFICATE ERCERT

[Code] ....

The output makes it obvious why the constraint has 'not' been enforced.

        Email
       -------
    1 | 0x00703529AF46D24BA863A3534260374E01000000328909B51BA44A49510F24DF31
C46F2E30977626D96617E2BD13D9115EB578852EEBAE326B8F3E2D422230478A29767C
    2 | 0x00703529AF46D24BA863A3534260374E01000000773E06E1B53F2C57F97C54370FECBB45B
C8A154FEA5CEEB9B6BB1133305282328AAFAD65B9BDC595F0006474190F6482
    3 | 0x00703529AF46D24BA863A3534260374E01000000C9EDB1C83B52E60598038D832D34
D75867AB0ABB23F9044B7EBC76832F22C432A867078D10974DC3717D6086D3031BDB

But, how do I work around this?

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Jun 4, 2007

Hi, all experts here,



Thank you very much for your kind attention.



I am confused on key column of case table and key time column of nested table by using Time Series algorithm.

In my case, the case table structure is as below:

Territory key text (the ID is actually dimrisk_key, in this case, I use the name column binding to combine the Territory column of case table Dimrisks),

While the nested table structure is as below:

Cal_month key time (in this case, actually the ID is dimdate_key, again, I used name column bining property to bind the Cal_month to the ID)

So my question is, as the key column of case table has been set to be Territory, as a result, does the model training still cover all the cases (rows) based on the ID of the table?

Also, in the nested table, as the key time column has been set to Cal_month rather than Dimdate_key of the nested table, as a result, would the single series based on the cal_month?



Hope it is clear for your advices and help.

And I am looking forward to hearing from you shortly.



With best regards,



Yours sincerely,





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I have got code for single string... but i want to encrypt/decrypt columns and sometimes the whole database...
Can anybody help me out...
If you have Store procedure in SQL for the same then also it ll do...
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