addin get_keyid() method

src/libstrongswan/crypto/x509.c

@@ -24,7 +24,7 @@
 #include <sys/stat.h>
 #include <unistd.h>
 #include <string.h>
-#include <printf.h>
+#include <stdio.h>
 
 #include "x509.h"
 
@@ -988,6 +988,14 @@ static chunk_t get_subjectKeyID(const private_x509_t *this)
 	return this->subjectKeyID;
 }
 
+/**
+ * Implements x509_t.get_keyid
+ */
+static chunk_t get_keyid(const private_x509_t *this)
+{
+	return this->public_key->get_keyid(this->public_key);
+}
+
 /**
  * Implements x509_t.get_issuer
  */
@@ -1213,6 +1221,7 @@ x509_t *x509_create_from_chunk(chunk_t chunk)
 	this->public.get_public_key = (rsa_public_key_t* (*) (const x509_t*))get_public_key;
 	this->public.get_serialNumber = (chunk_t (*) (const x509_t*))get_serialNumber;
 	this->public.get_subjectKeyID = (chunk_t (*) (const x509_t*))get_subjectKeyID;
+	this->public.get_keyid = (chunk_t (*) (const x509_t*))get_keyid;
 	this->public.get_issuer = (identification_t* (*) (const x509_t*))get_issuer;
 	this->public.get_subject = (identification_t* (*) (const x509_t*))get_subject;
 	this->public.set_until = (void (*) (x509_t*,time_t))set_until;

src/libstrongswan/crypto/x509.h

@@ -110,6 +110,14 @@ struct x509_t {
 	 */
 	chunk_t (*get_subjectKeyID) (const x509_t *this);
 
+	/**
+	 * @brief Get keyid from the certificate's public key.
+	 * 
+	 * @param this				calling object
+	 * @return					keyid
+	 */
+	chunk_t (*get_keyid) (const x509_t *this);
+
 	/**
 	 * @brief Get the certificate issuer's ID.
 	 *