Creates an encryption transform object.
- macOS 10.7+
The key for the encryption operation
A pointer to a
CFError. This pointer will be set if an error occurred. This value may be
NULLif you do not want an error returned.
A pointer to a new transform or
NULL on error. Call the
CFRelease function to free this object's memory when you are done with it.
This function creates a transform which encrypts data.