| Abbreviation | Definition |
|---|---|
| KMU | Key Management User |
| KMUA | Key Management User Agent |
| KP | Key Pair |
| KPCM | Key Privilege and Certificate Management |
| KS | Key Sign |
| KS | Key Stage |
| KSK | Key Signing Key |
| KSSA | Kurt Seifried Security Advisory |
| KSU | Key Service Unit |
| KU | Keyed Unique |
| KV | Key Variable |
| KVM | Key Variable Management |
| KVMP | Key Variable Management Plan |
| KVMP | Key Variable Management Protocol |
| KVMPR | Key Variable Management Procedures |
| KVMS | Key Variable Management System |
| LB | Lock Bit |
| LCEAD | Low-Cost Encryption and Authentication Device |
| LCED | Low-Cost Encryption Device |
| LDIF | LDAP (Lightweight Directory Access Protocol) Data Interchange Format |