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-rw-r--r--crypto/rsa/rsa_chk.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/crypto/rsa/rsa_chk.c b/crypto/rsa/rsa_chk.c
index 475dfc5628..3ea4e02974 100644
--- a/crypto/rsa/rsa_chk.c
+++ b/crypto/rsa/rsa_chk.c
@@ -63,6 +63,10 @@ int RSA_check_key(const RSA *key)
return 0;
}
+ /* Set consant-time flag on private parameters */
+ BN_set_flags(key->p, BN_FLG_CONSTTIME);
+ BN_set_flags(key->q, BN_FLG_CONSTTIME);
+ BN_set_flags(key->d, BN_FLG_CONSTTIME);
i = BN_new();
j = BN_new();
k = BN_new();
@@ -141,6 +145,10 @@ int RSA_check_key(const RSA *key)
}
if (key->dmp1 != NULL && key->dmq1 != NULL && key->iqmp != NULL) {
+ /* Set consant-time flag on CRT parameters */
+ BN_set_flags(key->dmp1, BN_FLG_CONSTTIME);
+ BN_set_flags(key->dmq1, BN_FLG_CONSTTIME);
+ BN_set_flags(key->iqmp, BN_FLG_CONSTTIME);
/* dmp1 = d mod (p-1)? */
if (!BN_sub(i, key->p, BN_value_one())) {
ret = -1;