How to encrypt user data in a database?

How to encrypt user data in a database?

You can use a key derivation function to convert the user’s password into an encryption key. Then you would use a cryptographically secure pseudorandom number generator to generate a separate key that would encrypt the user’s data. You would then use the derived key to encrypt the generated key.

Which is the best way to encrypt passwords?

A search for “c# encrypt passwords” gives a load of examples. See the online SHA1 hash creator for an idea of what a hash function produces (But don’t use SHA1 as a hash function, use something stronger such as SHA256).

How do you set a password for a database?

Click the arrow next to the Open button, and then click Open Exclusive. The following figure depicts the menu. On the File tab, click Info, and then click Encrypt with Password . The Set Database Password dialog box appears. Type your password in the Password box, type it again in the Verify box, and then click OK.

Which is the best way to store password in a database?

In your scenario, you can have a look at asp.net membership, it is good practice to store user’s password as hashed string in the database. you can authenticate the user by comparing the hashed incoming password with the one stored in the database. I would MD5/SHA1 the password if you don’t need to be able to reverse the hash.

Why do I need to encrypt my Web app database?

The database of my web app stores sensitive data. An attacker shouldn’t have access to this data if he gains access to the database. That’s why I want to encrypt this sensitive data in the database. First I wanted to encrypt the users data with the user’s username or password as key.

How do you decrypt a Dek in a database?

You then encrypt the DEK using the KEK, and store the encrypted DEK and the salt in the database. Then, when the user logs in, you use their password and the salt from the database to regenerate the KEK, which you can use to decrypt the DEK, which you can use to decrypt the data.

How are private keys used to decrypt data?

Private keys are used to decrypt the data. This is the only key that can decrypt the encrypted data. Should be password-protected The proper management of cryptographic keys is essential to the safe use of encryption products.

Why do you need to store encrypted user data?

The key that actually encrypts the data is only decrypted long enough to decrypt the data that it encrypted. You’ll need to store that key in the session in order to avoid the need to ask the user for his password on each decryption occurance.

Which is the best way to encrypt sensitive data?

In other words, encryption is just a byproduct of good key management. The best way to do this is to use a Key Manager ( Gemalto KeySecure, Vormetric Key Manager are few to name) OR use a HSM (Hardware Security Module). Key Manager will generate and store the key within itself.

Where are encryption keys stored in a database?

The resulting ciphertext of the data encryption key could then be stored safely in the user table of your database (call the field “encryptedkey” if you like). In this way, the user’s password will become the means to decrypt the user’s encrypted key.

How can I store sensitive data securely in a MySQL database?

Public keys can be stored with the user in DB, it is public. Private key can be encrypted with user’s password. When user logs in, you decrypt the private key and store it in his cookies (if you use SSL, it is not that bad place) or session. Both are not perfect but better than plain text in php file.