Encrypt And Decrypt Text Format Data

Hi,
 
We have migrated a CRM Database from SQLServer 2000 to SQLServer 2005.

 

Database contains very sensitive data about customer in text format (Datatype varchar(20)) how can i encrypt the same without any change in the table design.


 
Regards
Sufian
 
 
 



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Encrypt/decrypt Data

We like to secure datas.
Only a few people are autorized to read this information, but today, these informations are readable with a simple query with a query analyzer for exemple.

I'd like to encrypt datas with reversible function in one field of a table

Is there a function able to do this kind of work in SQLServer V7 or 2000 ?

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Hi Guys.


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If anyone has the code, please provide me.

(I know sql does accept extended ASCII characters)

Thanks
-MAK

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Hi folks,
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Many thanks in advance
 
Simon

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like for example i have this query statement below

insert username,password users values ('daimous','my_password')

what i want is every time i insert a value to the password column that value should be encrypted first.


select username,password from users

everytime i select the value of the password column should decrypted.
Thanks in advance!!!

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Hi,
Please help!!!!!!!
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Thanks

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TIA, cfr

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Thanks

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Hi there,

Using symmetric keys and certificates in SQL2005, can one assign users permission to only decrypt or encrypt data?

Reason would be say data capturer and data reader type roles. I tried to create some with the GRANT CONTROL and GRANT VIEW for certificates and definitions on Symmetric keys, but havent been to successfull.

Would be great if someone here can offer some advise on it, and if it's possible using SQL rights.

thanks

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Hi,
We are going to implement our new applications with .net on MS sql and we have to make sure that SQL Server satisfies PCI Compliance, we€™re concerned with the following items from the PCI Standards Guide.
Could you please guide me that SQL Server 2005 satisfy this kind of functionality?
I am new for SQL server 2005 and i would like to make sure before we move into Microsoft platform and as i am heavily oracle guy.

 
PCI Standards Guide lines

==>3.6.4 Periodic changing of keys

€˘ As deemed necessary and recommended by the associated application (for example,

re-keying); preferably automatically

€˘ At least annually.

3.6.5 Destruction of old keys

3.6.6 Split knowledge and establishment of dual control of keys (so that it requires two or three

people, each knowing only their part of the key, to reconstruct the whole key)

3.6.7 Prevention of unauthorized substitution of keys

 
Thanks for your help and guidelines!
Pora

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I want the users of my site to be able to write a couple of paragraphs, save it to SQL Server and then have it read back and look the same. I don't want the users to be able to add any html to the text they submit. I just want them to be able to seperate or indent their paragraphs.

At one point, I had a textbox that saved text to the server and read it back the same way it was originally inputed. However, I can't figure our what I had done to make it work.

Any ideas?
Thanks

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I understood that sql 2005 has EncryptByCert(varchar) function to encrypt data field. but varchar is limit by 8,000 chars long.

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In Access I would use something like format(columnname, "00000000") to get it to work, but SQL Server doesn't like this.
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Db_datareaders Can Decrypt Data?

Hi... I want to encrypt data using a symmetric key + certificate, but it appears anyone with simply "db_datareader" can view the decrypted data? Is this correct?

Recreation steps:

1. As a System Admin, log into a SQL 2005 Database Engine.
2. Create some login that you also have access to. Ensure it does not already exist, or inherit any permissions from some existing NT-group. (From here on out, I will refer to it as the "underpriveleged user".)
3. Create a new database of any name.
4. Run the following query against the database:

CREATE TABLE [dbo].[MyTable](
 [MyColumn] [varbinary](50) NULL
) ON [PRIMARY]
GO
CREATE USER [DOMAINUserName]
  FOR LOGIN [DOMAINUserName] WITH DEFAULT_SCHEMA=[dbo]
sp_addrolemember 'db_owner', 'DOMAINUserName'

5. Now open another SSMS and connect as that underpriveleged user.
6. Change the database to the name you provided in Step 3.
7. Run these commands as the underpriveleged user...

CREATE MASTER KEY ENCRYPTION BY PASSWORD='DbMK_pwd'

CREATE CERTIFICATE MyCertificate WITH SUBJECT='Some Text'
CREATE SYMMETRIC KEY MyKeyName
  WITH ALGORITHM = DESX
  ENCRYPTION BY CERTIFICATE MyCertificate

OPEN SYMMETRIC KEY MyKeyName
  DECRYPTION BY CERTIFICATE MyCertificate
INSERT INTO MyTable(MyColumn)
  VALUES (EncryptByKey(Key_GUID('MyKeyName'), 'MyValue'))
SELECT Convert(varchar,DecryptByKey(MyColumn)) FROM MyTable
CLOSE SYMMETRIC KEY MyKeyName

8. Now switch back to the System Admin session, and revoke most of the underpriveleged account's permissions...

sp_droprolemember 'db_owner', 'DOMAINUserName'
GRANT SELECT ON dbo.MyTable TO [DOMAINUserName]

9. Switch once again to the underpriveleged session, and run the following:

OPEN SYMMETRIC KEY MyKeyName DECRYPTION BY CERTIFICATE MyCertificate
SELECT *, Convert(varchar,DecryptByKey(MyColumn)) FROM MyTable
CLOSE SYMMETRIC KEY MyKeyName


Why does this work? The user only has select access against the table, and no explicit permissions to the certificate or key.  I have even disconnected as this user, tried again, restarted SQL Server... it is still able to decrypt the text.

Or what should I be doing to ensure only those with access to the key/certificate can decrypt the cipher text?

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Hi
I am using sql server 2005, I want to encrypt data. If any person open the table then encrypted data will show.
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2)Symmetric
3)Asymmetric
please suggest me which technique is helpful.It will be impact on performance please suggest.

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Hi All,
In SQL 2000, i need to Export Data,so that datashould be encrypted.When i try to import that in any database it should authenticate the user and should get decrypted.IZAT Possible.

Can any one help?

Thanks,
Karthik

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Hi,

In SQL2000 i need to Encryptdata when I export data using DTS.LikeWise I should when i import data I should authenticate that user and decrypt that.

Can any one help?

Thanks,

Karthik

 

 

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J827

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Hi,

I want to encrypt certain data like password, ssn, credit card info etc before saving in database. Also, this encrypted data can be queried using standard SQL statements like:

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The mechanism to encrypt data could be in a .net application. The code that does encryption/decryption should also be protected so that it doesnt work if it falls in wrong hands.

Can anyone suggest what would be the best way to accomplish above?

thanks,
dapi

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I am trying to insert data in a table using a stored procedure, but somehow I cannot store the values passed by the stored procedure in the table.

Table has two fields FIRST_NAME, LAST_NAME with varbinary data type(I need to encrypt the data)

My stored procedure is as follows. Please let me know what i am doing wrong!

***************************************************************

ALTER PROCEDURE [dbo].[SP_InsertInfo]
 -- Add the parameters for the stored procedure here

            @FIRST_NAME varBINARY(100)
           ,@LAST_NAME varBINARY(100)  

AS
OPEN SYMMETRIC KEY key DECRYPTION BY CERTIFICATE cert

BEGIN
 
 SET NOCOUNT ON;

    -- Insert statements for procedure here


 Insert into [dbo].[INFO] (FIRST_NAME, LAST_NAME)
Values ( encryptbykey( key_guid('key'),'@FIRST_NAME'),
             encryptbykey( key_guid('key'),'@LAST_NAME')
           )
close SYMMETRIC KEY key

END

**********************************************
EXEC sp_InsertInfo 'larry', 'Smith'

when I run the SP, the data stored in the first_name, last_name fields are @FIRST_NAME', @LAST_NAME' instead of larry, smith respectively.

Thanks

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Hopefully this makes sense, not sure what to even begin researching...

I'm trying to optimize all facets of this process, as it will take over the resources on my server if not done efficiently.

I have CSV files containing INTs that I need to upsert (match to an existing/earlier imported array or create a new record set) millions of times a day. To be clear, this data is a small subset of the actual import, this arrays contents are not the main data of the process, and the value of the entire array is meant to be related to higher level tables.

The contents of the CSV array are 99.9+% repeating, meaning they will very often share the exact same contents as a a previously imported array. A rough guess is there are 20k combinations existing, and less than 1k new per month, and will range from 6 cols x 15 rows to 6 cols x 50 rows.

So current plan is to use a MD5 hash during the (not SQL related) export process to identify the contents of this CSV file, and export only the md5 (32 digit hex) as a lookup to identify the contents. If the SQL import process finds a new (unknown) MD5 it will request the actual contents, otherwise it will simply use the MD5 as a key/id/code for the actual array contents that are already stored.

There's probably a certain terminology I'm not familiar with for this type of thing.. I've never heard of something like this. I realize collision is a threat, but I'm unsure how much I should be worried about it with this type of data (similar size/contents, but a relatively small amount of possibilities). I think up to even 0.1% collision would be acceptable which is probably way more than enough.


Does this sound like a bad idea to anyone? Are there certain hash functions I should use for this type of thing? Anyone have suggestions of where to look next?

Thanks!

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The second encrypt it and write it to SQL Server 2005 database with a stored procedure.
Thats works only for a resultset of a line of the first task.

How can I use a full resultset in a stored procedure to move whole recordsets?

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