Key Recovery

A function in the lifecycle of keying material; mechanisms and processes that allow authorized entities to retrieve or reconstruct keying material from key backup or archive. 

See the following for more information: 
NIST SP 800-57 Part 1 Rev. 3. 
NIST SP 800-57 Part 1 Rev. 4 under Key recovery. 
 
A stage in the lifecycle of keying material; mechanisms and processes that allow authorized entities to retrieve keying material from key backup or archive. 

See NIST SP 800-57 Part 2 under Key recovery for more information. 
 
Mechanisms and processes that allow authorized entities to retrieve or reconstruct keys and other key information from key backups or archives. 

See NIST SP 800-57 Part 2 Rev.1 under Key recovery for more information.