I have a SQL Server 2000 database that contains information I would like to encrypt. The information is a field inside a table, and I would like to encrypt this information using a key, and decrypt it in my asp.net application using that key and use the decrypted data.
Please tell me how this can be done, or direct me to an article or a link on the subject.
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.
I have created mirroring... one of the column is encrypted on mirror database and I can see the decrypted result when I do query when I actually logged into server (through remote connection) but when I use the same query through using SSMS from my laptop the query result come as the column is not decrypted,
This function is used to initialize the seed for the RC4 algorithmCREATE FUNCTION dbo.fnInitRc4 ( @Pwd VARCHAR(256) ) RETURNS @Box TABLE (i TINYINT, v TINYINT) AS
BEGIN DECLARE@Key TABLE (i TINYINT, v TINYINT)
DECLARE@Index SMALLINT, @PwdLen TINYINT
SELECT@Index = 0, @PwdLen = LEN(@Pwd)
WHILE @Index <= 255 BEGIN INSERT@Key ( i, v ) VALUES( @Index, ASCII(SUBSTRING(@Pwd, @Index % @PwdLen + 1, 1)) )
INSERT@Box ( i, v ) VALUES( @Index, @Index )
SELECT@Index = @Index + 1 END
DECLARE@t TINYINT, @b SMALLINT
SELECT@Index = 0, @b = 0
WHILE @Index <= 255 BEGIN SELECT@b = (@b + b.v + k.v) % 256 FROM@Box AS b INNER JOIN@Key AS k ON k.i = b.i WHEREb.i = @Index
SELECT@t = v FROM@Box WHEREi = @Index
UPDATEb1 SETb1.v = (SELECT b2.v FROM @Box b2 WHERE b2.i = @b) FROM@Box b1 WHEREb1.i = @Index
UPDATE@Box SETv = @t WHEREi = @b
SELECT@Index = @Index + 1 END
RETURN ENDANd this function does the encrypt/decrypt partCREATE FUNCTION dbo.fnEncDecRc4 ( @Pwd VARCHAR(256), @Text VARCHAR(8000) ) RETURNSVARCHAR(8000) AS
BEGIN DECLARE@Box TABLE (i TINYINT, v TINYINT)
INSERT@Box ( i, v ) SELECTi, v FROMdbo.fnInitRc4(@Pwd)
Hi, Does any body have a stored procedure or a function I can use? What I need is to encrypt and decrypt a password using Tiny Encryption Algorithm, SO I have an encryption scalar valued function or sproc and similarly decryption function or sproc.Now I need rolling keys to encrypt and decrypt, so I have a table which has keys used for encryption and decryption and depending on the dtae the keys are different.So I alos need a sproc to retrieve the keys.If anybody has done it before or can point me to where can I go let me know?
Database Security, we are going to use AES 256 Symmetric Encryption. We will be using RSA for Asymmetric Key Encryption, 1024 Bits.
We got the code working for the seond case but for the first, WHEN:
CREATE SYMMETRIC KEY sym_Key WITH ALGORITHM = AES_256 ENCRYPTION BY ASYMMETRIC KEY asym_Key GO
THEN:
-- Msg 15314, Level 16, State 1, Line 1 -- Either no algorithm has been specified or the bitlength and the algorithm specified for the key are not available in this installation of Windows.
What can be the way out to be able to create the AES 256 Symmetric key.
I am planning to use XP_CRYPT for encrypting and decrypting cc#'s, passwords etc., at database level. Any suggestions or experiences on this. More info about this product at http://www.activecrypt.com/faq.htm
I created stored function with encryption. after i created i dont able to view the source code from system tables or any tool. i have get back the original source code
note: i want to stored function not for stored procedure.
I would like to be able to store user network passwords in a database table and be able to encrypt and decrypt using stored procs. Could anyone give me a pointer on this.
Hey I had a table with a column of data encrypted in a format. I was able to decrypt it and then encrypt it using Symmetric keys and then updating the table column with the data. Now, there is a user sp which needs to encrypt the password for the new user and put it in the table. I'm not being able to make it work. I have this so far. Something somewhere is wrong. I dont know where. Please help Thanks. I used the same script to do the encryption initially but that was for the whole column. I need to see the encrypted version of the @inTargetPassword variable. But it's not working. It doesn't give me an error but gives me wrong data...
I want to perform column level and database level encryption/decryption.... Does any body have that code written in C# or VB.NET for AES-128, AES-192, AES-256 algorithms... 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... Thanks in advance
I know there is no native encryption in SQL2K, but what 3rd party encryption tools would other forum members recommend from experience? I am required to encrypt data for PCI compliance.
I store data in an .mdf file (I use SQL server 2005), because this way it's easier to move the application from one machine to another.
I've faced a problem with the encryption of the database.
Is there a possibility/way to encrypt a database file so that, if someone else finds/copies the mdf, he/she won't be able to read it.
I thought about encrypting the string values of the tables itself and decode them inside the application and encide when Inserting, but why inventing somehing that might already exist.
I read a couple of articles related to encryption topic in this forum and I feel that's really helpful I don't know if anyone has some knoeledge about the encryption issues in replication and clustering environment. I read some documents from Microsoft web site that explains how to move an encrypted database from its original server to another new server instance. That cause a lot manual works, if the database master key has been encrypted by the original service master key and you still want to enjoy the auto-open feature in the new environment. As we know the Microsoft SQL Server 2005 has a hierarchy encryption key structure and its top level service master key is really service oriented. For what kind of mechanism or set up, Microsoft makes their encrypted database working smoothly and automatically in a clustered and replicated infrastructure. Is that possible to sacrifice the security a bit by dump the service master key for database master key and make database more portable? I search the web site all the way, but couldn't find the related topic. Anybody has a good idea or experience to share?
I'm having an issue in encrypting large documents. I know that previous editions ENCRYPTBYKEY had a maximum size of 8,000 byte limitation. Does SQL Server 2014 have any new features that overcomes this limitation?
Using SQL Server 2014 Std Symmetric key with AES_256
Sql server 2008R2 (SP2) Ent, PROD DB myDB was encrypted. During Release mistakenly (Vendor created script blames some settings in ...- actually does not matter) Decryption started (ALTER .. SET ENCRYPTION OFF) as we got from ErrorLog.
For some reason initial encryption scan was aborted and then mentioned command: ALTER ... OFF was issued again. What we have now (after 60 h of decryption- encryption took only 2.5 h)- is_encrypted = 0 in sys.databases, encryption_state = 5 (decryption in progress) in sys.dm_database_encryption_keys (percent_complete= 0). But it seems myDB is still encrypted- I made a backup of myDB and tried to read it (restore filelistonly) from other server (with no encryption)- failed- asked for key. Seems metadata was changed when initial scan during decryption started but then stuck and (if I am correct) decryption was never completed. Question- any similar experience? How we can fix meta- data, i.e. assuming that myDB is still encrypted we should have is_encrypted = 1 and encryption_state = 3 (encrypted).
I have a SP SQL server that uses Handshake for the web parts. I am getting an error on SharePoint about 'An error occurred during Service Master Key Decryption' inside the web parts of the page, everything else comes up, from what I have researched MS says go under SQL Configuration Manager and change the service account. Is this the correct course of action for this type of error? I am just having a hard time believing that changing the engines service account will stop this issue, this account is used on several SQL server with no issues.
I have a central database server that is runnning on SQL 2005 standard edition and Windows server 2003 standard as OS.
I realise that I can use SQL statements to encrypt and decrypt the data inside the standard SQL.
However, how do I read and write the data via an web application coded in C#.net and is also running on the same machine?
Another issue is, I need to replicate some of the data in this SQL standard over to a SQL mobile running on a mobile device running on Windows CE 5.0.
The mobile device also needs to read and write data to the encrypted data via a C#.net application.
Question is, with all these requirements to be met, can I use AES? I know that AES is not available on Windows XP and Windows Server 2000 and I cant find AES in the .net compact framework.
how do i go about ensuring security? how do I ensure that the symmetric key is the same both on the SQL standard and SQL mobile?
i have to encrypt my data in sql2005 database using assymetric key encryption which i have done properly.But i have a doubt that while writing stored procedure i have to provide key information in it , that will be visible to everyone then whats the use of taht encryption. Can anyone tell me how can i write stored procedure without providing key information in it.
Does anybody know how can I implement data encryption on the sql7.0 database? I need to do this with some of the fields, like credit card number. My sql server acts as backend database server for IIS servers.
I am looking for a way to encrypt a column in my SQL Server Table. I have been looking in the books and have not found anything. Any ideas of how to do it?
hi, I am a new user to SQL convert my business application from VFP. I am bulding my new application depending on stored procedures. My questions as follow:-
- Is there a way to stored procedures encryption? - How to products my data structure
The error in the subject line "The property 'Use Encryption for Data' is not supported" is encountered when running a DTS package via a job step in SQL Server 7.0. The problem is not encountered when executing the DTS package interactively via Enterprise Manager from my PC. When I view the Advanced Properties of the OLE DB driver from Enterprise Manager on my PC, I notice a Use Encryption for Data Property. When I view the Advanced Properties of the OLE DB driver from Enterprise Manager on the Server, the Use Encryption for Data Property does not appear. Service Pack 3 for SQL 7.0 is installed on both my PC and on the SQL Server. I suspect this Property difference for OLE DB could be related to the fact that I installed Enterprise Manager for SQL 2000 on my PC at one time and then uninstalled. Any ideas how to correct this situation?
Is there any way to encrypt the sql server mdf and ldf data files in SQL Server 2005 without using EFS or creating an additional system user? Only one application which has the password embedded (i know this is a security risk) should be able to connect to the database and access the mdf and ldf files.
My current experience is with access and sql2000. In my current application, I compress/encrypt my data prior to storing in my database. Does the new verion of sql support compression/encryption and if so can you please point me to any links which discuss.