Merge "Merge remote-tracking branch 'aosp/upstream-master' into merge-152-from-upstream"

1 files changed, 35 insertions, 0 deletions

diff --git a/bcpkix/src/main/java/org/bouncycastle/dvcs/MessageImprintBuilder.java b/bcpkix/src/main/java/org/bouncycastle/dvcs/MessageImprintBuilder.java
new file mode 100644
index 0000000..052d4fe
--- /dev/null
+++ b/bcpkix/src/main/java/org/bouncycastle/dvcs/MessageImprintBuilder.java
@@ -0,0 +1,35 @@
+package org.bouncycastle.dvcs;
+
+import java.io.OutputStream;
+
+import org.bouncycastle.asn1.x509.DigestInfo;
+import org.bouncycastle.operator.DigestCalculator;
+
+public class MessageImprintBuilder
+{
+    private final DigestCalculator digestCalculator;
+
+    public MessageImprintBuilder(DigestCalculator digestCalculator)
+    {
+        this.digestCalculator = digestCalculator;
+    }
+
+    public MessageImprint build(byte[] message)
+        throws DVCSException
+    {
+        try
+        {
+            OutputStream dOut = digestCalculator.getOutputStream();
+
+            dOut.write(message);
+
+            dOut.close();
+
+            return new MessageImprint(new DigestInfo(digestCalculator.getAlgorithmIdentifier(), digestCalculator.getDigest()));
+        }
+        catch (Exception e)
+        {
+            throw new DVCSException("unable to build MessageImprint: " + e.getMessage(), e);
+        }
+    }
+}