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David Goulet
3835a3acf5
Turns out that we were only recording the "b_digest" but to have bidirectionnal authenticated SENDMEs, we need to use the "f_digest" in the forward cell situation. Because of the cpath refactoring, this commit plays with the crypt_path_ and relay_crypto_t API a little bit in order to respect the abstractions. Previously, we would record the cell digest as the SENDME digest in the decrypt cell function but to avoid code duplication (both directions needs to record), we now do that right after iff the cell is recognized (at the edge). It is now done in circuit_receive_relay_cell() instead. We now also record the cell digest as the SENDME digest in both relay cell encryption functions since they are split depending on the direction. relay_encrypt_cell_outbound() and relay_encrypt_cell_inbound() need to consider recording the cell digest depending on their direction (f vs b digest). Fixes #30428 Signed-off-by: David Goulet <dgoulet@torproject.org>
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