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Heiko Schaefer 2023-11-28 19:53:44 +01:00
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book/source/08-signing_components.md
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@ -72,7 +72,7 @@ Self-signatures play a crucial role in forming and managing the structure of Ope
Internally, an OpenPGP certificate is essentially a series of packets strung sequentially. When a certificate is stored in a file format known as a [transferable public key](https://www.ietf.org/archive/id/draft-ietf-openpgp-crypto-refresh-10.html#name-transferable-public-keys), packets can be easily added or removed. Internally, an OpenPGP certificate is essentially a series of packets strung sequentially. When a certificate is stored in a file format known as a [transferable public key](https://www.ietf.org/archive/id/draft-ietf-openpgp-crypto-refresh-10.html#name-transferable-public-keys), packets can be easily added or removed.
To safeguard against unauthorized additions and alterations of components, OpenPGP uses cryptographic signatures. These validate that any additions, such as added subkeys or [identity components](identity_components), were made by the owner of the OpenPGP certificate using its primary key. While anyone can still store unrelated elements to a certificate dataset, OpenPGP implementations will reject them if they lack a valid cryptographic connection with the certificate. To safeguard against unauthorized addition or alteration of components, OpenPGP uses cryptographic signatures. These validate that all components, such as subkeys or [identity components](identity_components), were linked to the OpenPGP certificate by its owner, using the primary key. While anyone can still store unrelated elements to a certificate dataset, OpenPGP implementations will reject them if they lack a valid cryptographic connection with the certificate.
```{note} ```{note}
Conversely, omissions of packets by third parties can easily occur when handling an OpenPGP certificate dataset. This could pose a challenge, for example, when an attacker deliberately omits revocation packets. Without access to an alternative, complete certificate source, recipients might not detect these omissions. Conversely, omissions of packets by third parties can easily occur when handling an OpenPGP certificate dataset. This could pose a challenge, for example, when an attacker deliberately omits revocation packets. Without access to an alternative, complete certificate source, recipients might not detect these omissions.