Data masking methods supported by different engines-Dataphin(Dataphin)-阿里云帮助中心

Different compute engines support different data masking methods and security algorithms. Use this reference to choose compatible algorithms across engines.

Compute engine	Data masking method	Supported security algorithms
MaxCompute	Security policy's algorithm package and the database's built-in function	All data masking algorithms are supported when using a security policy algorithm package, including the FPE encryption algorithm. Database built-in functions do not support Gaussian, sha256, sha384, sha512, salted sha256, salted sha384, salted sha512, and salted md5.
Hologres	Built-in database function	The following encryption algorithms are not supported: Gaussian, sha256, sha384, sha512, salted sha256, salted sha384, salted sha512, and salted md5.

Note

UDF (User-Defined Function) masking uses a security UDF installation package. It supports flexible masking techniques but requires installation within the relevant project. DB (Database) masking uses the compute engine's built-in functions and works immediately without installation, but may not support all masking algorithms.
If your tenant uses multiple compute engines, such as MaxCompute and Hologres, select masking algorithms that all engines support to avoid masking failures.