diff --git a/src/crypto/crypto.h b/src/crypto/crypto.h
index a28ddbd71..12109ce83 100644
--- a/src/crypto/crypto.h
+++ b/src/crypto/crypto.h
@@ -703,14 +703,6 @@ struct crypto_ec * crypto_ec_init(int group);
  */
 void crypto_ec_deinit(struct crypto_ec *e);
 
-/**
- * crypto_ec_cofactor - Set the cofactor into the big number
- * @e: EC context from crypto_ec_init()
- * @cofactor: Cofactor of curve.
- * Returns: 0 on success, -1 on failure
- */
-int crypto_ec_cofactor(struct crypto_ec *e, struct crypto_bignum *cofactor);
-
 /**
  * crypto_ec_prime_len - Get length of the prime in octets
  * @e: EC context from crypto_ec_init()
diff --git a/src/crypto/crypto_openssl.c b/src/crypto/crypto_openssl.c
index 27e68f739..1b0c1ec96 100644
--- a/src/crypto/crypto_openssl.c
+++ b/src/crypto/crypto_openssl.c
@@ -1636,13 +1636,6 @@ void crypto_ec_deinit(struct crypto_ec *e)
 }
 
 
-int crypto_ec_cofactor(struct crypto_ec *e, struct crypto_bignum *cofactor)
-{
-	return EC_GROUP_get_cofactor(e->group, (BIGNUM *) cofactor,
-				     e->bnctx) == 0 ? -1 : 0;
-}
-
-
 struct crypto_ec_point * crypto_ec_point_init(struct crypto_ec *e)
 {
 	if (TEST_FAIL())
diff --git a/src/crypto/crypto_wolfssl.c b/src/crypto/crypto_wolfssl.c
index 6b2ac8c43..976a00865 100644
--- a/src/crypto/crypto_wolfssl.c
+++ b/src/crypto/crypto_wolfssl.c
@@ -1352,16 +1352,6 @@ void crypto_ec_deinit(struct crypto_ec* e)
 }
 
 
-int crypto_ec_cofactor(struct crypto_ec *e, struct crypto_bignum *cofactor)
-{
-	if (!e || !cofactor)
-		return -1;
-
-	mp_set((mp_int *) cofactor, e->key.dp->cofactor);
-	return 0;
-}
-
-
 struct crypto_ec_point * crypto_ec_point_init(struct crypto_ec *e)
 {
 	if (TEST_FAIL())