crypto: increase default pbkdf2 time for luks to 2 seconds
cryptsetup recently increased the default pbkdf2 time to 2 seconds
to partially mitigate improvements in hardware performance wrt
brute-forcing the pbkdf algorithm. This updates QEMU defaults to
match.
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
diff --git a/crypto/block-luks.c b/crypto/block-luks.c
index 3ab3250..a848232 100644
--- a/crypto/block-luks.c
+++ b/crypto/block-luks.c
@@ -921,7 +921,7 @@
memcpy(&luks_opts, &options->u.luks, sizeof(luks_opts));
if (!luks_opts.has_iter_time) {
- luks_opts.iter_time = 1000;
+ luks_opts.iter_time = 2000;
}
if (!luks_opts.has_cipher_alg) {
luks_opts.cipher_alg = QCRYPTO_CIPHER_ALG_AES_256;
diff --git a/qapi/crypto.json b/qapi/crypto.json
index 2b6118f..6933b13 100644
--- a/qapi/crypto.json
+++ b/qapi/crypto.json
@@ -187,7 +187,7 @@
# Currently defaults to 'sha256'
# @iter-time: #optional number of milliseconds to spend in
# PBKDF passphrase processing. Currently defaults
-# to 1000. (since 2.8)
+# to 2000. (since 2.8)
# Since: 2.6
##
{ 'struct': 'QCryptoBlockCreateOptionsLUKS',
