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PGP Keysigning: Establishing Trust in Digital Identities and Key Ownership

Learn the importance of PGP keysigning to establish identity and trust in the digital realm. Discover how to safely verify individuals' identities and key ownership through documented procedures.

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PGP Keysigning: Establishing Trust in Digital Identities and Key Ownership

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Presentation Transcript

  1. PGP keysigning Andrew Cormack and friends

  2. Why? • Two functions of PGP • to send secret information • to prove origin • Already know a message relates to a key • but not a person • Here establish identity of owner • Trust can be done later, by e-mail

  3. How? • Now • Later

  4. What to sign? • Key looks like this • mQENAzbbyOwAAAEIALIR3zaj1EL+SyQ46ug7JKHRNSvtXzEymiMnt1Cwn+j3rK0cUIHHoeVCFF6kIgr7kzJ7O80l9ySob/Djsh3W644nih1xglFJwT2AMtdfZ6TV3djQRKO8U6d9QNcNrg0gpf/KmX0iugOHJGY3DY5cLbvjZ7cMkP+GTOAReF/30l... • Fingerprint - a 128 bit hash value is better • DDC3 B5E4 FF84 0BD3 F290 FD48 B73D 1AD9

  5. Trusted Introducers • Follow documented procedure • Verify individuals’ • Identity • Ownership of key • Sign keys which have been verified • Distribute signed keys to participants

  6. Participants • May rely on trusted introducers • and sign keys which have been signed by them • if they are satisfied with the procedure • and believe it has been followed correctly • Or may do their own verification • using whatever protocol they choose

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