1 files changed, 89 insertions, 0 deletions
diff --git a/libraries/spongycastle/pkix/src/main/java/org/spongycastle/cert/ocsp/RespID.java b/libraries/spongycastle/pkix/src/main/java/org/spongycastle/cert/ocsp/RespID.java
new file mode 100644
index 000000000..7510200d5
--- /dev/null
+++ b/libraries/spongycastle/pkix/src/main/java/org/spongycastle/cert/ocsp/RespID.java
@@ -0,0 +1,89 @@
+package org.spongycastle.cert.ocsp;
+
+import java.io.OutputStream;
+
+import org.spongycastle.asn1.DERNull;
+import org.spongycastle.asn1.DEROctetString;
+import org.spongycastle.asn1.ocsp.ResponderID;
+import org.spongycastle.asn1.oiw.OIWObjectIdentifiers;
+import org.spongycastle.asn1.x500.X500Name;
+import org.spongycastle.asn1.x509.AlgorithmIdentifier;
+import org.spongycastle.asn1.x509.SubjectPublicKeyInfo;
+import org.spongycastle.operator.DigestCalculator;
+
+/**
+ * Carrier for a ResponderID.
+ */
+public class RespID
+{
+    public static final AlgorithmIdentifier HASH_SHA1 = new AlgorithmIdentifier(OIWObjectIdentifiers.idSHA1, DERNull.INSTANCE);
+
+    ResponderID id;
+
+    public RespID(
+        ResponderID id)
+    {
+        this.id = id;
+    }
+
+    public RespID(
+        X500Name name)
+    {
+        this.id = new ResponderID(name);
+    }
+
+    /**
+     * Calculate a RespID based on the public key of the responder.
+     *
+     * @param subjectPublicKeyInfo the info structure for the responder public key.
+     * @param digCalc a SHA-1 digest calculator.
+     * @throws OCSPException on exception creating ID.
+     */
+    public RespID(
+        SubjectPublicKeyInfo     subjectPublicKeyInfo,
+        DigestCalculator         digCalc)
+        throws OCSPException
+    {
+        try
+        {
+            if (!digCalc.getAlgorithmIdentifier().equals(HASH_SHA1))
+            {
+                throw new IllegalArgumentException("only SHA-1 can be used with RespID");
+            }
+
+            OutputStream     digOut = digCalc.getOutputStream();
+
+            digOut.write(subjectPublicKeyInfo.getPublicKeyData().getBytes());
+            digOut.close();
+
+            this.id = new ResponderID(new DEROctetString(digCalc.getDigest()));
+        }
+        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();
+    }
+}