edits on Ch6 terminology

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Tammi L. Coles 2023-11-07 21:16:08 +01:00
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@ -11,17 +11,17 @@ Without signatures, keys would remain unassociated with any certificate or owner
## Terminology
The term *signature* can have two different meanings in the context of OpenPGP:
Within OpenPGP, the term *signature* can have two different meanings:
- Cryptographic keys create raw signatures which are byte sequences calculated according to some signature scheme.
- [*OpenPGP signature packets*](https://www.ietf.org/archive/id/draft-ietf-openpgp-crypto-refresh-12.html#name-signature-packet-type-id-2), which combine a *type* setting, additional metadata, and a raw cryptographic signature.
- **Cryptographic signature**: a sequence of bytes created by cryptographic keys, calculated according to a signature scheme.
- **OpenPGP signature packets**: Defined in the [OpenPGP standard](https://www.ietf.org/archive/id/draft-ietf-openpgp-crypto-refresh-12.html#name-signature-packet-type-id-2), these packets combine a raw cryptographic signature along with a *type* designation and additional metadata.
```{figure} diag/meaning_of_signatures.png
Two meanings of the term "signature" in OpenPGP
```
For the purpose of this document, the term signature will refer to OpenPGP signature packets.
In this document, "signature" will refer to OpenPGP signature packets.
(signature_types)=
## Types of signatures in OpenPGP