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7064af16d2
Use crypto_memneq() for a constant-time comparison. sa_aead_dma_in_callback() compares the computed authentication tag against the received tag with memcmp(), which short-circuits on the first differing byte. An attacker who can submit decrypt requests and observe completion latency could recover the expected tag byte by byte. Valid tag forgery for AEAD breaks the INT-CTXT guarantee. Assisted-by: gregkh_clanker_t1000 Signed-off-by: David C.C.M. Gall <david.ccm.gall@googlemail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2474 lines
66 KiB
2474 lines
66 KiB