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siv: add support for AES-GCM-SIV in gnutls

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Add support for AES-128-GCM-SIV in the current development code of
gnutls. There doesn't seem to be an API to get the cipher's minimum and
maximum nonce length and it doesn't check for invalid lengths. Hardcode
and check the limits in chrony for now.
This commit is contained in:
Miroslav Lichvar
2023-09-12 10:18:01 +02:00
parent aa8196328c
commit a74b63277a
2 changed files with 34 additions and 4 deletions
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7
configure vendored
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@@ -1012,6 +1012,13 @@ if [ $feat_ntp = "1" ] && [ $feat_nts = "1" ] && [ $try_gnutls = "1" ]; then
then
EXTRA_OBJECTS="$EXTRA_OBJECTS siv_gnutls.o"
add_def HAVE_SIV
if [ $try_aes_gcm_siv = "1" ] && test_code 'AES-GCM-SIV in gnutls' \
'gnutls/crypto.h' "$test_cflags" "$test_link $LIBS" '
return gnutls_aead_cipher_init((void *)1, GNUTLS_CIPHER_AES_128_SIV_GCM,
(void *)2);'
then
add_def HAVE_GNUTLS_SIV_GCM
fi
if test_code 'gnutls_aead_cipher_set_key()' 'gnutls/crypto.h' \
"$test_cflags" "$test_link $LIBS" '
return gnutls_aead_cipher_set_key((void *)1, (void *)2);'