diff --git a/include/ipfs/namesys/pb.h b/include/ipfs/namesys/pb.h
new file mode 100644
index 0000000..1d47ef6
--- /dev/null
+++ b/include/ipfs/namesys/pb.h
@@ -0,0 +1,31 @@
+#ifndef IPNS_NAMESYS_PB_H
+    #define IPNS_NAMESYS_PB_H
+
+    typedef int IpnsEntry_ValidityType;
+
+    struct ipns_entry {
+        // TODO
+        struct routingResolver *cache;
+        struct stime *eol;
+    };
+
+    struct namesys_pb {
+        // TODO
+        struct ipns_entry *IpnsEntry;
+    };
+
+    // setting an EOL says "this record is valid until..."
+    const IpnsEntry_ValidityType IpnsEntry_EOL = 0;
+
+    char *IpnsEntry_ValidityType_name[] = {
+        "EOL",
+        NULL
+    };
+
+    int IpnsEntry_ValidityType_value (char *s);
+    char* ipfs_namesys_pb_get_validity (struct ipns_entry*);
+    char* ipfs_ipns_entry_data_for_sig(struct ipns_entry*);
+    char* ipfs_ipns_entry_get_signature(struct ipns_entry*);
+    int ipfs_namesys_pb_get_value (char**, struct ipns_entry*);
+    IpnsEntry_ValidityType ipfs_namesys_pb_get_validity_type (struct ipns_entry*);
+#endif // IPNS_NAMESYS_PB_H
diff --git a/namesys/pb.c b/namesys/pb.c
new file mode 100644
index 0000000..4e7d633
--- /dev/null
+++ b/namesys/pb.c
@@ -0,0 +1,19 @@
+#include <string.h>
+#include "ipfs/namesys/pb.h"
+
+int IpnsEntry_ValidityType_value (char *s)
+{
+    int r;
+
+    if (!s) {
+        return -1; // invalid.
+    }
+
+    for (r = 0 ; IpnsEntry_ValidityType_name[r] ; r++) {
+        if (strcmp (IpnsEntry_ValidityType_name[r], s) == 0) {
+            return r; // found
+        }
+    }
+
+    return -1; // not found.
+}