3 files changed, 18 insertions, 17 deletions
diff --git a/src/asn1/asn1_alt.cpp b/src/asn1/asn1_alt.cpp
index 1fccf6ac0..1fc1f66e2 100644
--- a/src/asn1/asn1_alt.cpp
+++ b/src/asn1/asn1_alt.cpp
@@ -17,6 +17,24 @@
 
 namespace Botan {
 
+namespace {
+
+/*
+* Check if type is a known ASN.1 string type
+*/
+bool is_string_type(ASN1_Tag tag)
+   {
+   return (tag == NUMERIC_STRING ||
+           tag == PRINTABLE_STRING ||
+           tag == VISIBLE_STRING ||
+           tag == T61_STRING ||
+           tag == IA5_STRING ||
+           tag == UTF8_STRING ||
+           tag == BMP_STRING);
+   }
+
+}
+
 /*
 * Create an AlternativeName
 */
diff --git a/src/asn1/asn1_obj.h b/src/asn1/asn1_obj.h
index 8a7e6cea2..692a6fde6 100644
--- a/src/asn1/asn1_obj.h
+++ b/src/asn1/asn1_obj.h
@@ -98,11 +98,6 @@ bool BOTAN_DLL operator>=(const X509_Time&, const X509_Time&);
 bool BOTAN_DLL operator<(const X509_Time&, const X509_Time&);
 bool BOTAN_DLL operator>(const X509_Time&, const X509_Time&);
 
-/*
-* Helper Functions
-*/
-bool BOTAN_DLL is_string_type(ASN1_Tag);
-
 }
 
 #endif
diff --git a/src/asn1/asn1_str.cpp b/src/asn1/asn1_str.cpp
index efdf1a9b3..b28f36d90 100644
--- a/src/asn1/asn1_str.cpp
+++ b/src/asn1/asn1_str.cpp
@@ -60,18 +60,6 @@ ASN1_Tag choose_encoding(const std::string& str,
 }
 
 /*
-* Check if type is a known ASN.1 string type
-*/
-bool is_string_type(ASN1_Tag tag)
-   {
-   if(tag == NUMERIC_STRING || tag == PRINTABLE_STRING ||
-      tag == VISIBLE_STRING || tag == T61_STRING || tag == IA5_STRING ||
-      tag == UTF8_STRING || tag == BMP_STRING)
-      return true;
-   return false;
-   }
-
-/*
 * Create an ASN1_String
 */
 ASN1_String::ASN1_String(const std::string& str, ASN1_Tag t) : tag(t)