X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;ds=sidebyside;f=src%2Forg%2Fbouncycastle%2Fasn1%2Fx509%2FSubjectKeyIdentifier.java;fp=src%2Forg%2Fbouncycastle%2Fasn1%2Fx509%2FSubjectKeyIdentifier.java;h=0dd2b27db529082680ca6a287cb69c194a137ed2;hb=e5e9355b4f4e0e2c8de9068a71c1e3cc26fa9905;hp=0000000000000000000000000000000000000000;hpb=f35445729371789b3d496f426d7f87542f8e1a45;p=org.ibex.core.git

diff --git a/src/org/bouncycastle/asn1/x509/SubjectKeyIdentifier.java b/src/org/bouncycastle/asn1/x509/SubjectKeyIdentifier.java
new file mode 100644
index 0000000..0dd2b27
--- /dev/null
+++ b/src/org/bouncycastle/asn1/x509/SubjectKeyIdentifier.java
@@ -0,0 +1,64 @@
+package org.bouncycastle.asn1.x509;
+
+import org.bouncycastle.crypto.Digest;
+import org.bouncycastle.crypto.digests.SHA1Digest;
+import org.bouncycastle.asn1.*;
+
+/**
+ * <pre>
+ * SubjectKeyIdentifier::= OCTET STRING
+ * </pre>
+ */
+public class SubjectKeyIdentifier
+    implements DEREncodable
+{
+	private byte[] keyidentifier;
+
+    public SubjectKeyIdentifier(
+        byte[] keyid)
+    {
+        this.keyidentifier=keyid;
+    }
+
+    public SubjectKeyIdentifier(
+        DEROctetString  keyid)
+    {
+		this.keyidentifier=keyid.getOctets();
+
+    }
+
+	/**
+	 *
+	 * Calulates the keyidentifier using a SHA1 hash over the BIT STRING
+	 * from SubjectPublicKeyInfo as defined in RFC2459.
+	 *
+	 **/
+	public SubjectKeyIdentifier(
+		SubjectPublicKeyInfo    spki)
+	{
+		Digest  digest = new SHA1Digest();
+		byte[]  resBuf = new byte[digest.getDigestSize()];
+
+		DERBitString derpk = new DERBitString(spki.getPublicKey());
+		byte[] bytes = derpk.getBytes();
+		digest.update(bytes, 0, bytes.length);
+		digest.doFinal(resBuf, 0);
+		this.keyidentifier=resBuf;
+	}
+
+    public byte[] getKeyIdentifier()
+    {
+        return keyidentifier;
+    }
+
+     /**
+     * <pre>
+     * SubjectKeyIdentifier := OCTET STRING
+     * </pre>
+     */
+    public DERObject getDERObject()
+    {
+        DEROctetString oct = new DEROctetString(keyidentifier);
+        return oct;
+    }
+}