What are the different types of encryption techniques available for SQL Server databases?

In SQL Server databases, there are several encryption techniques available.

1. Symmetric encryption: using the same key for both encrypting and decrypting, common symmetric encryption algorithms include AES and DES.
2. Asymmetric encryption involves using a pair of public and private keys for encryption and decryption, commonly used asymmetric encryption algorithms include RSA and ECC.
3. Hash algorithm: Encrypting plaintext to a fixed-length ciphertext using hash algorithm, commonly used hash algorithms include MD5 and SHA.
4. Digital signature: By encrypting data with a private key and then verifying the encrypted data with a public key, the integrity and trustworthiness of the data’s source can be ensured.
5. SSL/TLS protocol: Ensures the security of data during network transmission by encrypting it at the transport layer using SSL or TLS protocols.

These encryption techniques can be utilized in areas such as data storage, transmission, and access in SQL Server to ensure the confidentiality, integrity, and availability of data.