gpg: Factor common code out of the AEAD decryption function.
* g10/decrypt-data.c (aead_underflow): Factor reading and checking code code out to ... (fill_buffer, aead_checktag): new functions.
Here is a simple test script to check against a set of encrypted files
with naming convention like "symenc-aead-eax-c6-56.asc"
------------------------ >8 ------------------------
set -e
GPG=../g10/gpg
for file in "$@"; do
echo "${file##*/}" | ( IFS=- read dummy1 dummy2 mode cbyte len rest
len="${len%.*}"
cbyte="${cbyte#c}"
[ "$dummy1" != "symenc" -o "$dummy2" != "aead" ] && continue
echo "checking mode=$mode chunkbyte=$cbyte length=$len"
if ! $GPG --no-options --rfc4880bis --batch --passphrase "abc" \
-d < $file >tmp.plain 2>/dev/null; then
echo "Decryption failed for $file" >&2
exit 2
fi
plainlen=$(wc -c <tmp.plain)
if [ $plainlen -ne $len ]; then
echo "Plaintext length mismatch for $file (want=$len have=$plainlen)" >&2
exit 2
fi
)done
echo "all files are okay" >&2
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- Signed-off-by: Werner Koch <wk@gnupg.org>