Release 10.1A: OpenEdge Development:
Progress 4GL Reference

SYMMETRIC-ENCRYPTION-IV attribute

The default initialization vector value to use with the encryption key in the ENCRYPT and DECRYPT functions. The default value is the Unknown value (?), which indicates that no initialization vector value is used .

Data type: RAW

Access: Readable/Writeable

Applies to: SECURITY-POLICY system handle

Using an initialization vector value increases the strength of the specified encryption key (that is, it makes the key more unpredictable).

You are responsible for generating, storing, and transporting this value.