1 files changed, 80 insertions, 0 deletions
diff --git a/libraries/spongycastle/prov/src/main/java/org/spongycastle/ocsp/RespID.java b/libraries/spongycastle/prov/src/main/java/org/spongycastle/ocsp/RespID.java
new file mode 100644
index 000000000..18c471886
--- /dev/null
+++ b/libraries/spongycastle/prov/src/main/java/org/spongycastle/ocsp/RespID.java
@@ -0,0 +1,80 @@
+package org.spongycastle.ocsp;
+
+import java.security.MessageDigest;
+import java.security.PublicKey;
+
+import javax.security.auth.x500.X500Principal;
+
+import org.spongycastle.asn1.ASN1InputStream;
+import org.spongycastle.asn1.ASN1OctetString;
+import org.spongycastle.asn1.DEROctetString;
+import org.spongycastle.asn1.ocsp.ResponderID;
+import org.spongycastle.asn1.x500.X500Name;
+import org.spongycastle.asn1.x509.SubjectPublicKeyInfo;
+
+/**
+ * Carrier for a ResponderID.
+ */
+public class RespID
+{
+    ResponderID id;
+
+    public RespID(
+        ResponderID id)
+    {
+        this.id = id;
+    }
+
+    public RespID(
+        X500Principal   name)
+    {
+        this.id = new ResponderID(X500Name.getInstance(name.getEncoded()));
+    }
+
+    public RespID(
+        PublicKey   key)
+        throws OCSPException
+    {
+        try
+        {
+            // TODO Allow specification of a particular provider
+            MessageDigest digest = OCSPUtil.createDigestInstance("SHA1", null);
+
+            ASN1InputStream aIn = new ASN1InputStream(key.getEncoded());
+            SubjectPublicKeyInfo info = SubjectPublicKeyInfo.getInstance(aIn.readObject());
+
+            digest.update(info.getPublicKeyData().getBytes());
+
+            ASN1OctetString keyHash = new DEROctetString(digest.digest());
+
+            this.id = new ResponderID(keyHash);
+        }
+        catch (Exception e)
+        {
+            throw new OCSPException("problem creating ID: " + e, e);
+        }
+    }
+
+    public ResponderID toASN1Object()
+    {
+        return id;
+    }
+
+    public boolean equals(
+        Object  o)
+    {
+        if (!(o instanceof RespID))
+        {
+            return false;
+        }
+
+        RespID   obj = (RespID)o;
+
+        return id.equals(obj.id);
+    }
+
+    public int hashCode()
+    {
+        return id.hashCode();
+    }
+}