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3bfbf5f0a9
krb5enc_dispatch_decrypt() sets req->base.complete as the skcipher
callback, which is the caller's own completion handler. When the
skcipher completes asynchronously, this signals "done" to the caller
without executing krb5enc_dispatch_decrypt_hash(), completely bypassing
the integrity verification (hash check).
Compare with the encrypt path which correctly uses
krb5enc_encrypt_done as an intermediate callback to chain into the
hash computation on async completion.
Fix by adding krb5enc_decrypt_done as an intermediate callback that
chains into krb5enc_dispatch_decrypt_hash() upon async skcipher
completion, matching the encrypt path's callback pattern.
Also fix EBUSY/EINPROGRESS handling throughout: remove
krb5enc_request_complete() which incorrectly swallowed EINPROGRESS
notifications that must be passed up to callers waiting on backlogged
requests, and add missing EBUSY checks in krb5enc_encrypt_ahash_done
for the dispatch_encrypt return value.
Fixes: d1775a177f ("crypto: Add 'krb5enc' hash and cipher AEAD algorithm")
Signed-off-by: Dudu Lu <phx0fer@gmail.com>
Unset MAY_BACKLOG on the async completion path so the user won't
see back-to-back EINPROGRESS notifications.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
515 lines
14 KiB
515 lines
14 KiB