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[GNUnet-developers] HKDF usage in GNS block encryption
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From: |
Bernd Fix |
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Subject: |
[GNUnet-developers] HKDF usage in GNS block encryption |
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Date: |
Mon, 16 Sep 2019 17:35:28 +0000 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.2 |
The function "derive_block_aes_key" in "gnsrecord_crypto.c" swaps the
arguments for "key" and "salt" in the calls of "hkdf" - is that intented?
If so, what is the rationale behind it? It is done correctly in the
derivation functions for keys, so I wonder... the entropy of the key
(~255) is much higher than that of the salt (~50 for a 12-letter label).
Does that have security implications? >Y<
- [GNUnet-developers] HKDF usage in GNS block encryption,
Bernd Fix <=