diff --git a/lib/asn1/der.h b/lib/asn1/der.h
index c8bc95374..fde7f4d74 100644
--- a/lib/asn1/der.h
+++ b/lib/asn1/der.h
@@ -4,6 +4,8 @@
 
 #define DER_H
 
+#include <time.h>
+
 typedef enum {UNIV = 0, APPL = 1, CONTEXT = 2 , PRIVATE = 3} Der_class;
 
 typedef enum {PRIM = 0, CONS = 1} Der_type;
@@ -38,4 +40,34 @@ krb5_data string_make (char *);
 krb5_data string_make_n (int len, char *);
 void string_free (krb5_data);
 
+int der_get_int (unsigned char *p, int len, unsigned *ret);
+int der_get_length (unsigned char *p, int len, int *ret);
+int der_get_general_string (unsigned char *p, int len, char **str);
+int der_get_octet_string (unsigned char *p, int len, krb5_data *data);
+int der_get_tag (unsigned char *p, int len,
+		  Der_class *class, Der_type *type, int *tag);
+int der_match_tag (unsigned char *p, int len,
+		   Der_class class, Der_type type, int tag);
+int der_match_tag_and_length (unsigned char *p, int len,
+			      Der_class class, Der_type type, int tag,
+			      int *length_ret);
+int decode_integer (unsigned char *p, int len, unsigned *num);
+int decode_general_string (unsigned char *p, int len, char **str);
+int decode_octet_string (unsigned char *p, int len, krb5_data *k);
+int decode_generalized_time (unsigned char *p, int len, time_t *t);
+
+
+int der_put_int (unsigned char *p, int len, unsigned val);
+int der_put_length (unsigned char *p, int len, int val);
+int der_put_general_string (unsigned char *p, int len, char *str);
+int der_put_octet_string (unsigned char *p, int len, krb5_data *data);
+int der_put_tag (unsigned char *p, int len, Der_class class, Der_type type,
+		 int tag);
+int der_put_length_and_tag (unsigned char *p, int len, int len_val,
+			    Der_class class, Der_type type, int tag);
+int encode_integer (unsigned char *p, int len, unsigned *data);
+int encode_general_string (unsigned char *p, int len, char **data);
+int encode_octet_string (unsigned char *p, int len, krb5_data *k);
+int encode_generalized_time (unsigned char *p, int len, time_t *t);
+
 #endif /* DER_H */