Alphanumeric String Key

Generates unique alphanumeric strings of the same length as the input.

For example, for the origin value ABC123, the output value is a six-character alphanumeric string such as D24N05.

You can configure the generator to:

• Preserve a value prefix. For example, if the origin value always starts with acct_, you might want to preserve that in the output value, and only mask the unique part of the identifier.
• Preserve a specified number of characters from the end of each source value. For example, you might want the last 3 characters of each destination value to be the same as the last 3 characters of the source value.
• Only replace numerical characters, and keep other types of characters as is.

Characteristics

Consistency	Yes, can be made self-consistent.
Linking	No, cannot be linked.
Differential privacy	No
Data-free	No
Allowed for primary keys	Yes
Allowed for unique columns	Yes
Uses format-preserving encryption (FPE)	Yes
Privacy ranking	3 if not consistent 4 if consistent
Generator ID (for the API)	AlphaNumericPkGenerator

How to configure

To configure the generator:

1. To preserve a prefix value, in the Preserve prefix field, type the prefix string to preserve in the output values. For example, if you set Preserve prefix to acct_, then any source values that start with acct_ will also start with acct_ in the destination data.
2. To preserve a set of characters from the end of the original value, in the Preserve suffix length field, type the the number of characters to preserve at the end of each value. For example, if you set Preserve suffix length to 3, then the destination values all have the same final 3 characters as the source values. For example, for the source value abc123efg, the destination value ends with efg.
3. To only replace the numerical characters, toggle Mask digits only to the on position.
4. Toggle the Consistency setting to indicate whether to make the generator self-consistent. By default, the generator is not consistent.
5. If Structural data encryption is enabled, then to use it for this column, in the advanced options section, toggle Use data encryption process to the on position.