NIST announces the completion of Revision 3 of Special Publication (SP) 800-57, Part 1, Recommendation for Key Management, Part 1: General. This publication contains basic key management guidance, including the security services that may be provided and the key types that may be employed in using cryptographic mechanisms, the functions involved in key management, and the protections and handling required for cryptographic keys. This revision aligns the document with SP 800-131A , as well as providing a general update of the document.