Key Management of PGP :Key Ring Format

Timestamp

Key ID

Public key

Enciphered

private key

User ID

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Ti

KUi mod 264

KUi

EIH(Pi) [KRi]

User i

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Private key ring

Timestamp

Key ID

Public key

Owner Trust

User ID

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Ti

KUi mod 264

KUi

trust_flagi

User i

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Public key ring

Key

Legitimacy

Signature(s)

Signature

Trust(s)

trust_flagi

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1. Timestamp:thedate/time when this key pair is generated .

2. KeyID:the least significant 64 bits of public key

3. Public key: the public-key portion of the pair

4. Encrypted Private key: the private-key portion of the pair ,

it is encrypted with IDEA

5. UserID: any sentences the user types as input

6. Key legitimacy: the extent to which PGP will trust that it's a

valid public key for the user.

7. Signature trust (s): the degree to which the PGP user trusts the

signer to verify others public keys.

8. Owner trust: the degree to which this public key is trusted to

sign other public-key certificate.

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