Password-Decryption
Aug 11, 2000Hi,
Every one
Can i Encrypt & Decrypt Data store in SQL SERVER table. If field is alredy Encripted, then how I can decrypt in SQL SERVER.
Thanks
Nirmal
ADVERTISEMENT
Passing Key Decryption Password To Stored Procedure
Aug 7, 2006I try to pass the key used to decrypt symmetric key to a stored procedure as a parameter like this:
OPEN SYMMETRIC KEY MyKey
DECRYPTION BY PASSWORD=@ keypassword;
I get an error message saying "Incorrect syntax near "@keypassword".
Is there something that I am missing?
Password Encryption And Decryption Using Stored Procs
Dec 28, 2007I 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.
Many thanks
Decryption
Aug 11, 2001How to decrypt a Stored Procedure which has been encrypted in SQL Server 7.0
Thanks in Advance
Regards,
Karthik
Decryption
Oct 11, 2007I am using the below function written by PESO to encrypt/Decrypt the data for my SSN Numbers stored as a Clear Text
First I am Encrypting all my SSN's using this function and storing it in the database in a seperate Column,
Some thing like this..
SELECT DBACentral.dbo.fnEncDecRc4( '145678908' , 'ty6578dmp1203' )
OUPPUT
--------
âUÙN_{��
How to Decrypt ( âUÙN_{�� ) using the below function.
CREATE 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)
DECLARE@Index SMALLINT,
@i SMALLINT,
@j SMALLINT,
@t TINYINT,
@k SMALLINT,
@CipherBy TINYINT,
@Cipher VARCHAR(8000)
SELECT@Index = 1,
@i = 0,
@j = 0,
@Cipher = ''
WHILE @Index <= DATALENGTH(@Text)
BEGIN
SELECT@i = (@i + 1) % 256
SELECT@j = (@j + b.v) % 256
FROM@Box b
WHEREb.i = @i
SELECT@t = v
FROM@Box
WHEREi = @i
UPDATEb
SETb.v = (SELECT w.v FROM @Box w WHERE w.i = @j)
FROM@Box b
WHEREb.i = @i
UPDATE@Box
SETv = @t
WHEREi = @j
SELECT@k = v
FROM@Box
WHEREi = @i
SELECT@k = (@k + v) % 256
FROM@Box
WHEREi = @j
SELECT@k = v
FROM@Box
WHEREi = @k
SELECT@CipherBy = ASCII(SUBSTRING(@Text, @Index, 1)) ^ @k,
@Cipher = @Cipher + CHAR(@CipherBy)
SELECT@Index = @Index +1
END
RETURN@Cipher
END
GO
Thanks for any help
Decryption Not Working
Feb 5, 2008I have been testing two way symmetrical encryption. I have been able to encrypt rows of a spacific column using the following UPDATE statement, however, when I try and decrypt them, the query returns Null for the effected rows.
Can anyone see where I may have gone wrong in the decryption statement?UPDATE tblReceipts SET tblReceipts.CCNumber = EncryptByPassPhrase('Abracadabra!1234$',tblReceipts.CCNumber)
FROM tblReceipts
WHERE tblReceipts.CreditCardType > 0
Decrypt Does Not Work?????
SELECT CONVERT(varchar, DecryptByPassPhrase('Abracadabra!1234$',tblReceipts.CCNumber)) AS CCNumber
FROM tblReceipts
WHERE tblReceipts.CLIENTID = 15000My CCNumber field is nvarchar(20)My PassPhrase is just a test phraseThe data after it is encrypted in just a bunch of binary looking boxes
What Key To Use For DES3 Decryption
Apr 3, 2015How do I tell SQL Server what key to use for DES3 decryption? I want to encrypt in Oracle and after ETL to SQL Server, be able to decrypt but keep a column's value encrypted in Oracle, SSIS and SQL side - only decrypting on the SQL Server side when needing to use the value.
View 1 Replies View RelatedDecryption On Sql2005
Oct 16, 2006What solutions are available?
Is there a way to read about from server's metadata?
Gus
RC4 Encryption - Decryption
Dec 12, 2006This 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)
DECLARE@Index SMALLINT,
@i SMALLINT,
@j SMALLINT,
@t TINYINT,
@k SMALLINT,
@CipherBy TINYINT,
@Cipher VARCHAR(8000)
SELECT@Index = 1,
@i = 0,
@j = 0,
@Cipher = ''
WHILE @Index <= DATALENGTH(@Text)
BEGIN
SELECT@i = (@i + 1) % 256
SELECT@j = (@j + b.v) % 256
FROM@Box b
WHEREb.i = @i
SELECT@t = v
FROM@Box
WHEREi = @i
UPDATEb
SETb.v = (SELECT w.v FROM @Box w WHERE w.i = @j)
FROM@Box b
WHEREb.i = @i
UPDATE@Box
SETv = @t
WHEREi = @j
SELECT@k = v
FROM@Box
WHEREi = @i
SELECT@k = (@k + v) % 256
FROM@Box
WHEREi = @j
SELECT@k = v
FROM@Box
WHEREi = @k
SELECT@CipherBy = ASCII(SUBSTRING(@Text, @Index, 1)) ^ @k,
@Cipher = @Cipher + CHAR(@CipherBy)
SELECT@Index = @Index +1
END
RETURN@Cipher
END
Peter Larsson
Helsingborg, Sweden
RC4 Encryption/Decryption
Jan 3, 2008This is related to post :
http://www.sqlteam.com/forums/topic.asp?TOPIC_ID=78552
got a issue with this one..im not sure why..
My results are as follows:
Select dbo.fnEncDecRc4('Orange12345', 'Hello123')
Output : ,M gl
Select dbo.fnEncDecRc4('Orange12345', ',Mgl')
Output : M
i am not able to decrypt it. Any idea why this is hapenning? Does it has to do something with regional settings?
Decryption Problem
May 10, 2006I wanted to configure Report Server and publish my reports. I configured report server 2005 on win 2003 os. I prepared few reports and deployed them. When I tried to view this report thru ReportServer (http://localhost/ReportServer) from my local machine, I got the following error message:-
The encrypted value for the "UnattendedExecutionAccountPassword" configuration setting cannot be decrypted.
The report server has encountered a configuration error. See the report server log files for more information.
Can anyone help me in solving this!
I will highly appreciate it.
Thanks in advance,
hemal
Encryption And Decryption
Jan 24, 2008
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?
Thanks
Decryption Not Working
Dec 2, 2007I'm trying to put together a proof of concept utilizinf encryption with SQL Server and neded to get a little help. I've got the basics down but I'm not seeing the expected results. Here's the script that I'm running against a very simple table. I'm essentially just adding a coulmn to hose encrypted data, encrypting that data, and then selecting that data - in both encrypted and decrypted form:
Code Block
CREATE CERTIFICATE LAND_ENCRYPT_ACCOUNT3
WITH SUBJECT = 'ExternalAccountID';
GO
CREATE SYMMETRIC KEY AccountID3_01
WITH ALGORITHM = AES_128
ENCRYPTION BY CERTIFICATE LAND_ENCRYPT_ACCOUNT3;
GO
USE [LAND_ENCRYPT];
GO
-- Create a column in which to store the encrypted data.
ALTER TABLE Account
ADD EncryptedAccountID3 varbinary(128);
GO
-- Open the symmetric key with which to encrypt the data.
OPEN SYMMETRIC KEY AccountID3_01
DECRYPTION BY CERTIFICATE LAND_ENCRYPT_ACCOUNT3;
-- Encrypt the value in column NationalIDNumber with symmetric
-- key SSN_Key_01. Save the result in column EncryptedNationalIDNumber.
UPDATE Account
SET EncryptedAccountID3 = EncryptByKey(Key_GUID('AccountID3_01'), ExternalAccountID);
GO
-- Verify the encryption.
-- First, open the symmetric key with which to decrypt the data.
OPEN SYMMETRIC KEY AccountID3_01
DECRYPTION BY CERTIFICATE LAND_ENCRYPT_ACCOUNT3;
GO
-- Now list the original ID, the encrypted ID, and the
-- decrypted ciphertext. If the decryption worked, the original
-- and the decrypted ID will match.
SELECT ExternalAccountID, EncryptedAccountID3
AS 'Encrypted ID Number',
CONVERT(nvarchar, DecryptByKey(EncryptedAccountID3))
AS 'Decrypted ID Number'
FROM Account;
GO
But when I run the "decrypt" the data, the only character that appears unencrypted is the very last character of each account number:
ExternalAccountID Encrypted ID Number Decrypted ID Number
-------------------------------------------------- ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ ------------------------------
12345654444 0x007B9CA28582AC42B36EBD8DFF91434701000000E267255EC20E27E5B4AC03E68C508ADCFA2EB815C234116D54FEE639685D7ECF49BB200140952E45A246AFE83BF53444 ㈱�㘵��4
12312312312 0x007B9CA28582AC42B36EBD8DFF91434701000000DB3838A7C459A2F031B1FFECF2499647C7DE10B7A20171EFDEA68320F7996CCC1C6A45011E93361F9A93494F49311CB9 ㈱ㄳ㌲㈱ㄳ2
12345678901 0x007B9CA28582AC42B36EBD8DFF9143470100000057EEEC0B1E223819EBF8186F0CBFEF8FDF4BFF4C0DCE322FAB8735DC8EA144B5937FFCC745A7FC427282C493DFECD901 ㈱�㘵㠷〹1
The first value is the unencrypted account id, the second is the encrypted account id, the last is the decrypted account id. As you can see, the decrypted value isn't quite right.
I've tried the AES_256, DES, and AES_128 algorithms and they all yield the same result.
Am I missing something?
Also, if I'm going to be inserting into an encrypted column, do I need to do it via a view and a trigger, or can I just do a straight forward INSERT / UPDATE?
Thanks!!!!!
Encryption && Decryption
Oct 30, 2006Database 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.
Decryption Of Stored Procedures
Feb 22, 2001Is there anyway by which I can decrypt the encrypted Stored Procedures which the Previus DBA had written and its running in Production . I need to make some changes to the Stored Procedure. Is is possible
View 1 Replies View RelatedEncryption/decryption Sql2k
Sep 17, 2003I 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
Security And Encryption And Decryption
Apr 21, 2007I found that while using encryption and decryption by keys and certificates thsere is no security at all.
if we uses master key the sysadmin can decrypt
but if we use private key (encryption by password), how do we pass the password so that profiller didn't show it?
SQL Error 15466: Decryption
Jun 15, 2007Hi
I get a strange error on my SQL Server 2005 database when I try to start replication.
Here is the manipulation leading to my problem:
1. Install new Windows server 2003 and SQL Server 2005 STD, service pack 2.
Server is part of a domain.
SQL2k5 is running under the LocalSystem account on each machine.
2. Get a copy of yesterday's full backup and transaction logs from running production SQL2k5 server.
3. Restore master, model, msdb and other user databases.
4. Try to start replication using the wizard.
I get the following error message
Msg 15466 sp_addlinkedsrvlogin
An error occurred during decryption.
Msg 15185 no remote user distributor_admin
I suspect this problem has to do with master service keys but need some advice. I am not sure it is related to the master restore since it also occurs on the production machine.
What should I do with this error message ?
TIA
Stephane
RijndaelManaged Decryption From SQL Server
Jan 17, 2008Subject:RijndaelManaged decryption from SQL Server
Issue: I am trying to move the decryption code from C# to SQL Server 2005.
Web.config
...
<symmetricCryptoProviders>
<add algorithmType="System.Security.Cryptography.RijndaelManaged, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=xxxxxx" protectedKeyFilename="C:Keysfffff.key" protectedKeyProtectionScope="LocalMachine" type="Microsoft.Practices.EnterpriseLibrary.Security.Cryptography.SymmetricAlgorithmProvider, Microsoft.Practices.EnterpriseLibrary.Security.Cryptography, Version=2.0.0.0, Culture=neutral, PublicKeyToken=null" name="RijndaelManaged"/>
</symmetricCryptoProviders>
...
.cs file
....
decString = Cryptographer.DecryptSymmetric("RijndaelManaged", encString);
....
SQL Server Data Encryption And Decryption
Feb 19, 2008Hi.
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.
Thanks in advance.
Stored Function Encryption And Decryption
Oct 30, 2007
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.
Data Access :: How To Recover Forgotten Password When Remember Password Option Checked
Jul 24, 2015I have connected to Database using my credentials by checking remember password option. After few days I forgot my password. How can I recover the password as SQL remember it. Is there any way to recover my password instead of resetting it.
View 3 Replies View RelatedSQL Server Agent Job Will Not Retain Package Password (encrypt Sensitive With Password)
Apr 1, 2008I have a package protected by a password - I am already unhappy that to get it to use the configuration file to change connection strings for the production servers I have had to hardcode the password into the config file - very insecure!
However, the package now deploys correctly to the production server and will run from there OK, but NOT if scheduled as a SQL Server Agent Job. Thus is because however often I edit the command line to include the password after the DECRYPT switch (which it has prompted me for when I click on the command line tab), the Job Step will not retain it.
If I open it up after I have edited it and closed it, the password has disappeared.
I know that if I run dtexec plus the code in the Command Line tab (with the password), the package runs OK.
This is driving me insane!
I have read all the other posts and so I tried replacing the SSIS package step with a CmdExec step and pasting that code into there - then I get an OLEDB error..
The code I use is:
DTEXEC /SQL "ImportRateMonitoringTables" /SERVER servername /DECRYPT password /CONFIGFILE "D:Microsoft SQL ServerSSISDeploymentsRateMonitoringImportTasksDeploymentImportRateMonitoringTables_Production.dtsConfig" /MAXCONCURRENT " -1 " /CHECKPOINTING OFF /REPORTING E
and I get
SSIS Error Code DTS_E_OLEDBERROR. An OLE DB error has occurred. Error code: 0x8000FFFF
although the same code executes perfectly from a command prompt.
Please does anyone have any experience with a similar problem and if so, how did you get round it?
Thank you
SQL Server 2008 :: TDE Enabled DB Stuck In Limbo During Decryption?
Mar 30, 2015Sql 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).
SQL Server 2008 :: Encryption / Decryption On Mirroring Database
May 4, 2015I 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,
View 0 Replies View RelatedRemoving Service Account From SQLServer2005MSSQLUser Causes Decryption Error
May 2, 2007I am attempting to implement tighter security on my instances of SQL Server 2005. One of my tasks is to make sure that the service account for the SQL Server service has the minimum privileges necessary to run the service. I thought I had everything configured correctly, but then I realized that the "SQLServer2005MSSQLUser" Windows group was a member of the "sysadmin" fixed server role. I do not want the service account to be a sysadmin, so I removed the service account from this group.
Everything seemed to be working, until I received a call from one of our developers. He was attempting to execute a stored procedure, and he kept getting the following error: "An error occurred during decryption".
I looked up the error, and found out it is related to the service master key. I am using the same service account that I did when I installed SQL Server, so I am baffled as to why I am receiving this error. The error was resolved when I added the service account back to the "SQLServer2005MSSQLUser" Windows group and restarted the SQL Server service.
Do have any idea what might be happening here?
Using Symmetric Key Problem With Encryption, Decryption Works Fine
May 4, 2006Hey 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...
declare @thePassword as varbinary(128)
,@inTargetPassword as varchar(255)
,@pwd3 as varchar(255)
,@theUserId bigint
set @theUserId= 124564
set @inTargetPassword = 'test'
OPEN SYMMETRIC KEY Key1
DECRYPTION BY CERTIFICATE sqlSecurity;
Select @pwd3=EncryptByKey(Key_GUID('Key1')
, @inTargetPassword, 1, HashBytes('SHA1', CONVERT( varbinary, [UserObjectId])))
from table1 where UserObjectId= @theUserId
close symmetric key Key1
SQL 2005 SP2 - Windows 2003 Ent SP1 - Password Does Not Meet The Password Policy DLL
Jun 18, 2007I am receiving the following error message when attempting to create a new SQL Authenticated login id.
Password validation failed. The password does not meet the requirements of the password filter DLL. (Microsoft SQL Server, Error: 15119)
I have four servers all running SQL Server 2005 SP2 on Windows 2003 Ent. SP1. Of the four servers, only one received the above error message using the same TSQL below.
CREATE LOGIN TEST_LOGIN WITH PASSWORD = 'pvif9dal' MUST_CHANGE, CHECK_EXPIRATION = ON
All four servers are in the same domain, which if I understand correctly, the password policies are therefore inherited at the OS level by the domain. The password being used is within the password policies of the domain.
Any ideas as to a root cause?
SQL Server 2008 :: Error Occurred During Service Master Key Decryption
Mar 13, 2015I 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.
MCSA SQL Server 2012
The Sa Password Must Meet SQL Server Password Policy Requirements.
Jun 30, 2007I tried to install an ALLDATA database which run with SQL Server 2005 express edition. The data base fails to install becase of the following code that come up which is related to AS password requirement. The error that come up is:
TITLE: Microsoft SQL Server 2005 Setup
------------------------------
The sa password must meet SQL Server password policy requirements. For strong password guidelines, see Authentication Mode, in SQL Server Books Online.
For help, click: http://go.microsoft.com/fwlink?LinkID=20476&ProdName=Microsoft+SQL+Server&ProdVer=9.00.2047.00&EvtSrc=setup.rll&EvtID=28001&EvtType=sqlca%5csqlcax.cpp%40SAPasswordPolicyCheck%40SAPasswordPolicyCheck%40x6d61
------------------------------
BUTTONS:
&Retry
Cancel
------------------------------
I am trying to install this database in a network server operating under Windows Server 2003 R2 with SP2. If anyone knows how to solve this problem, please let me.
Thanks,
Amilcar
Remember My Password Is Forgetting Password
Mar 11, 2008On the login prompt for Report Server, there is a checkbox option to "Remember my Password." I check this, login successfully... but when returning to the Report Server, I am again prompted for the password, although the user name is saved. No matter how many times I do this, the password will not save in IE7. I have tried this on 3 different computers with IE7. In IE 6, I do not even get the checkbox as an option, just the user name/password prompt. In Firefox, the password saves fine. Any ideas what would be causing this?
Thanks,
Brian
Export Username / Password To CSV File To Test SP To Output Username / Password
Jun 2, 2014I put this together to export the user name /password to a csv file to test my SP to output the user name/password.
DECLARE @user_name varchar(50)
DECLARE @psswrd varchar(10)
SELECT @user_name ,@psswrd
FROM ngweb_bulk_enrollments
EXEC master.dbo.xp_cmdshell 'bcp NGDevl.dbo.ngweb_bulk_enrollments out C: est.csv -Sserver1 -T -t, -r
-c'
This works but I don't get the headers in the file. How can I include the headers?
SQL Security :: Encryption 2005 - User Defined Function For Encryption And Decryption
Oct 7, 2015I 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.