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Correct documentation of AAD for file content encryption #54

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overheadhunter merged 1 commit into from
May 25, 2024
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Correct documentation of AAD for file content encryption #54

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2 changes: 1 addition & 1 deletion source/security/vault.rst
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Expand Up @@ -49,7 +49,7 @@ The cleartext is broken down into multiple chunks, each up to 32 KiB + 28 bytes
* up to 32 KiB encrypted payload using AES-GCM with the file content key, and
* 16 bytes tag computed by GCM with the following AAD:

* chunk number as 32 bit big endian integer (to prevent undetected reordering),
* chunk number as 64 bit big endian integer (to prevent undetected reordering),
* file header nonce (to bind this chunk to the file header),

Afterwards, the encrypted chunks are joined preserving the order of the cleartext chunks.
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