Add EC_GROUP_order_bits for OpenSSL compatibility
Change-Id: I37149fa4274357d84befff85728ce2337131afa7
Reviewed-on: https://boringssl-review.googlesource.com/c/33804
Commit-Queue: Adam Langley <agl@google.com>
Reviewed-by: Adam Langley <agl@google.com>
diff --git a/crypto/fipsmodule/ec/ec.c b/crypto/fipsmodule/ec/ec.c
index bd0662a..90b9d71 100644
--- a/crypto/fipsmodule/ec/ec.c
+++ b/crypto/fipsmodule/ec/ec.c
@@ -625,6 +625,10 @@
return 1;
}
+int EC_GROUP_order_bits(const EC_GROUP *group) {
+ return BN_num_bits(&group->order);
+}
+
int EC_GROUP_get_cofactor(const EC_GROUP *group, BIGNUM *cofactor,
BN_CTX *ctx) {
// All |EC_GROUP|s have cofactor 1.
diff --git a/include/openssl/ec.h b/include/openssl/ec.h
index 966393e..c65a1a7 100644
--- a/include/openssl/ec.h
+++ b/include/openssl/ec.h
@@ -133,6 +133,9 @@
// |group| that specifies the order of the group.
OPENSSL_EXPORT const BIGNUM *EC_GROUP_get0_order(const EC_GROUP *group);
+// EC_GROUP_order_bits returns the number of bits of the order of |group|.
+OPENSSL_EXPORT int EC_GROUP_order_bits(const EC_GROUP *group);
+
// EC_GROUP_get_cofactor sets |*cofactor| to the cofactor of |group| using
// |ctx|, if it's not NULL. It returns one on success and zero otherwise.
OPENSSL_EXPORT int EC_GROUP_get_cofactor(const EC_GROUP *group,
