Encrypt and Decrypt Column Value In SQL Server Table

Below is my SQL Server Table in design mode.


Image 1.

Select Records


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Now we will insert some records in this table. Here you will notice in Password column I will insert value in Encrypted form.

INSERT INTO EMPLOYEE (Name,Email,[Password],Designation,City,[State],Country, Experience)
VALUES('Rahul Saxena', '[email protected]', EncryptByPassPhrase('RS','india'),'Developer','Noida','Uttar Pradesh','India',5)

INSERT INTO EMPLOYEE (Name,Email,[Password],Designation,City,[State],Country,Experience)
VALUES('Shambhu Sharma', '[email protected]', EncryptByPassPhrase('RS','Delhi'),'Manager','Delhi','Delhi','India',10)

INSERT INTO EMPLOYEE (Name,Email,[Password],Designation,City,[State],Country, Experience)
VALUES('Manu Khanna', '[email protected]', EncryptByPassPhrase('RS','Rohini'),'Consultant','Delhi','Delhi','India',12)

INSERT INTO EMPLOYEE (Name,Email,[Password],Designation,City,[State],Country,Experience)
VALUES('Abhishek Nigam', '[email protected]', EncryptByPassPhrase('RS','Lucknow'),'Technical Consultant','Hawaii','Honolulu','USA',9)

INSERT INTO EMPLOYEE (Name,Email,[Password],Designation,City,[State],Country, Experience)
VALUES('Shraddha Gaur', '[email protected]', EncryptByPassPhrase('RS','DELHI'),'Lead Tester','Noida','Uttar Pradesh','India',4)

INSERT INTO EMPLOYEE (Name,Email,[Password],Designation,City,[State],Country, Experience)
VALUES('Shweta Kashyap', '[email protected]', EncryptByPassPhrase('RS','Dehradun'),'Developer','Dehradun','Uttarakhand','India',5)

INSERT INTO EMPLOYEE (Name,Email,[Password],Designation,City,[State],Country, Experience)
VALUES('Yogesh Gupta', '[email protected]', EncryptByPassPhrase('RS','Khanpur'),'Consultant','Atlanta','Georgia','USA',10)

INSERT INTO EMPLOYEE (Name,Email,[Password],Designation,City,[State],Country, Experience)
VALUES('Rakesh Dixit', '[email protected]', EncryptByPassPhrase('RS','Jaipur'),'Consultant','Jaipur','Rajasthan','India',10)

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Now see your records in your table.


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Now How we can Decrypt Our Column Value while fetching.

SELECT EMP_ID,NAME,EMAIL,CONVERT(VARCHAR(50),DECRYPTBYPASSPHRASE ('RS',PASSWORD))AS DECRYPTEDPASSWORD,
DESIGNATION,CITY,STATE,COUNTRY,EXPERIENCE FROM EMPLOYEE

Image 5.