Add functionality to help making self-signed certificate.

1 files changed, 40 insertions, 0 deletions

diff --git a/crypto/x509/x509_req.c b/crypto/x509/x509_req.c
index 0affa3bf30..b4ad53431e 100644
--- a/crypto/x509/x509_req.c
+++ b/crypto/x509/x509_req.c
@@ -113,6 +113,46 @@ EVP_PKEY *X509_REQ_get_pubkey(X509_REQ *req)
 	return(X509_PUBKEY_get(req->req_info->pubkey));
 	}
 
+int X509_REQ_check_private_key(X509_REQ *x, EVP_PKEY *k)
+	{
+	EVP_PKEY *xk=NULL;
+	int ok=0;
+
+	xk=X509_REQ_get_pubkey(x);
+	switch (EVP_PKEY_cmp(xk, k))
+		{
+	case 1:
+		ok=1;
+		break;
+	case 0:
+		X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY,X509_R_KEY_VALUES_MISMATCH);
+		break;
+	case -1:
+		X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY,X509_R_KEY_TYPE_MISMATCH);
+		break;
+	case -2:
+#ifndef OPENSSL_NO_EC
+		if (k->type == EVP_PKEY_EC)
+			{
+			X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY, ERR_R_EC_LIB);
+			break;
+			}
+#endif
+#ifndef OPENSSL_NO_DH
+		if (k->type == EVP_PKEY_DH)
+			{
+			/* No idea */
+			X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY,X509_R_CANT_CHECK_DH_KEY);
+			break;
+			}
+#endif
+	        X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY,X509_R_UNKNOWN_KEY_TYPE);
+		}
+
+	EVP_PKEY_free(xk);
+	return(ok);
+	}
+
 /* It seems several organisations had the same idea of including a list of
  * extensions in a certificate request. There are at least two OIDs that are
  * used and there may be more: so the list is configurable.