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Heiko Schaefer 2023-12-12 23:44:23 +01:00
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book/source/decryption.md
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@ -49,7 +49,7 @@ With version 4 SKESK packets, which are only used with version 1 SEIPD packets,
(decryption-skesk4-direct-method)=
#### Direct-Method
In version 4 of the SKESK packet, the encrypted session key is optional. A missing encrypted session key signals the use of the "direct-method", which means, the result of passing the passphrase through the S2K function is directly used as the session key/message key.
In version 4 of the SKESK packet, the encrypted session key is optional. A missing encrypted session key signals the use of the "direct-method," which means the result of passing the passphrase through the S2K function is directly used as the session key/message key.
When the direct method is used, the symmetric cipher algorithm ID of the SKESK packet dictates the cipher algorithm used to decrypt the plaintext from the SEIPD packet.
@ -135,7 +135,6 @@ Once the cipher is initialized, the whole encrypted data from the SEIPD packet i
The contents of the SEIPD packet are decrypted using the session key as message key.
```
## SEIPD w/ AEAD (v2)
Preferred mode.
@ -167,7 +166,6 @@ After all blocks have been processed, in a final AEAD step, the total number of
Each chunk is decrypted using AEAD using the message key and an IV with appended chunk index.
```
## SED
Legacy mode, may be decrypted, but not produced.
Legacy mode: may be decrypted, but not produced.