Remember SKI
Full name: Subject Key Identifier
Memory aid: Subject's Key gets an Identifier.
An SKI aids identification and is not by itself a trust decision.
Study area: Cryptography & trust · Batch 8
Relevant study for: CompTIA Security+ SY0-701 · ISC2 CISSP 2024 outline · ISC2 SSCP · CompTIA SecurityX · Cybersecurity Architect SC-100 · ISC2 CCSP · Security, Compliance, and Identity Fundamentals SC-900
Practice with exam flashcards →Cybersecurity & Identity / Knowledge library
SKI — Subject Key Identifier
Helps identify the public key associated with a certificate subject.
Why learn SKI — Subject Key Identifier?
Helps identify the public key associated with a certificate subject.
Where it came from
An SKI aids identification and is not by itself a trust decision.
- Memory aid (a learning cue, not the expansion): Subject's Key gets an Identifier.
Build your understanding
Work through these exercises in order. Try the task before opening a reference.
- Without looking, expand SKI: Subject Key Identifier.
- Recall this memory aid: Subject's Key gets an Identifier.
- Explain the practical use: Helps identify the public key associated with a certificate subject.
- Explain this distinction: An SKI aids identification and is not by itself a trust decision.
- Identify SKI in a device specification, architecture diagram, or system inventory.
Documentation and sources
- IETF RFC 5280 (www.rfc-editor.org)