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Heiko Schaefer 2023-11-25 17:46:07 +01:00
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book/source/08-signing_components.md
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@ -406,7 +406,7 @@ In OpenPGP, certain subpackets are universally expected across all types of sign
* **Issuer Fingerprint**: Essential for signature verification, this subpacket identifies the key (or subkey) used to create the signature. OpenPGP v6 signatures should include the Issuer Fingerprint subpacket, containing the 32-byte fingerprint of the key.
```{note}
The key used as the issuer in the signature might be a subkey of the primary key.
The key used as the issuer in the signature might be a subkey of the certificate.
```
This subpacket can be placed in either the hashed or unhashed area due to its self-authenticating nature. However, it is recommended to include it in the signature's hashed area for enhanced security.