| Subject | English | Dutch |
| fin., IT | authentication key identifier | identificatie van de authenticatiesleutel |
| fin., IT | identifier of authentication key | identificatie van de authenticatiesleutel |
| fin., IT | identifier of key to be discontinued | identificatie van verouderde sleutel |
| fin., IT | key enciphering key identifier | identificatie van de sleutelversleutelsleutel |
| fin., IT | key identifier | sleutelidentificatie |
| comp., MS | subject key identifier | identificatie van onderwerpsleutel (A certificate extension that contains a hash of the certification authority's certificate public key. This hash is placed in the Authority Key Identifier (AKI) extension of all issued certificates to facilitate chain building) |