Mask and encryption

For sensitive and legally protected data, such as Personal Identity Information (PII) or Personal Confidential Information (PCI), it is necessary to store data in encrypted or masked format in the filesystem. Since Hive v0.13.0, its data security features have matured in the areas of data hashing, data masking, and data encryption/decryption functions.

The data-hashing function

Before masking data was supported, the built-in hash function has been an alternative since Hive v1.3.0. A hash function reads an input string and produces a fixed-size alphanumeric output string. Since the output is generally uniquely (very little chance of collision) mapping to the input string, the hashed value is quite often...