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re-instate section structure

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Heiko Schaefer 2023-11-25 23:05:13 +01:00
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book/source/03-cryptography.md
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@ -133,8 +133,10 @@ Digital signatures in OpenPGP are used in two primary contexts:
- [Signatures on components](component_signatures_chapter)
(hybrid_cryptosystems)=
## Hybrid cryptosystems in OpenPGP
## Hybrid cryptosystems
[Hybrid cryptosystems](https://en.wikipedia.org/wiki/Hybrid_cryptosystem) combine the use of symmetric and asymmetric (public-key) cryptography to capitalize on the strengths of each, namely symmetric cryptography's speed and efficiency and public-key cryptography's mechanism for secure key exchange.
### Usage and terminology in OpenPGP
OpenPGP uses a hybrid cryptosystem for encryption. This approach involves generating unique shared secrets, known as "session keys," for each session. For detailed information on this topic, please refer to the chapters {ref}`encryption_chapter` and {ref}`decryption_chapter`.