1 files changed, 24 insertions, 0 deletions
diff --git a/src/lib/x509/x509_dn_ub.h b/src/lib/x509/x509_dn_ub.h
new file mode 100644
index 000000000..b4433eb53
--- /dev/null
+++ b/src/lib/x509/x509_dn_ub.h
@@ -0,0 +1,24 @@
+/*
+* (C) 2017 Fabian Weissberg, Rohde & Schwarz Cybersecurity
+*
+* Botan is released under the Simplified BSD License (see license.txt)
+*/
+#ifndef BOTAN_X509_DN_UB_H_
+#define BOTAN_X509_DN_UB_H_
+
+#include <botan/asn1_oid.h>
+
+namespace Botan {
+
+/**
+* Lookup upper bounds in characters for the length of distinguished name fields
+* as given in RFC 5280, Appendix A.
+*
+* @param oid the oid of the DN to lookup
+* @return the upper bound, or SIZE_MAX if no ub is known to Botan
+*/
+size_t lookup_ub(const OID& oid);
+
+}
+
+#endif