1 files changed, 90 insertions, 0 deletions
diff --git a/src/com/isode/stroke/network/JavaCryptoProvider.java b/src/com/isode/stroke/network/JavaCryptoProvider.java
new file mode 100644
index 0000000..b7dff5d
--- /dev/null
+++ b/src/com/isode/stroke/network/JavaCryptoProvider.java
@@ -0,0 +1,90 @@
+/*
+ * Copyright (c) 2011-2015 Isode Limited, London, England.
+ * All rights reserved.
+ */
+package com.isode.stroke.network;
+
+import java.security.InvalidKeyException;
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
+
+import javax.crypto.Mac;
+import javax.crypto.spec.SecretKeySpec;
+
+import com.isode.stroke.base.ByteArray;
+import com.isode.stroke.crypto.CryptoProvider;
+import com.isode.stroke.crypto.Hash;
+import com.isode.stroke.base.SafeByteArray;
+
+public class JavaCryptoProvider extends CryptoProvider {
+    
+    private static class HashProvider implements Hash {
+        private final MessageDigest digest;
+        
+        HashProvider(String algorithm) throws NoSuchAlgorithmException {
+            digest = MessageDigest.getInstance("SHA-1");
+        }
+
+        @Override
+        public Hash update(ByteArray data) {
+            digest.update(data.getData());
+            return this;
+        }
+
+        @Override
+        public Hash update(SafeByteArray data) {
+//            digest.update(data.getData());
+            return this;
+        }
+
+        @Override
+        public ByteArray getHash() {
+            return new ByteArray(digest.digest());
+        }
+
+    }
+
+    @Override
+    public Hash createSHA1() {
+        try {
+            return new HashProvider("SHA-1");
+        } catch (NoSuchAlgorithmException e) {
+            return null;
+        }
+    }
+
+    @Override
+    public Hash createMD5() {
+        try {
+            return new HashProvider("MD5");
+        } catch (NoSuchAlgorithmException e) {
+            return null;
+        }
+    }
+
+//    @Override
+    public ByteArray getHMACSHA1(SafeByteArray key, ByteArray data) {
+        // TODO Auto-generated method stub
+        return null;
+    }
+
+    @Override
+    public ByteArray getHMACSHA1(ByteArray key, ByteArray data) {
+        Mac mac;
+        try {
+            mac = Mac.getInstance("HmacSHA1");
+            mac.init(new SecretKeySpec(key.getData(), mac.getAlgorithm()));
+            return new ByteArray(mac.doFinal(data.getData()));
+        } catch (NoSuchAlgorithmException e) {
+            return null;
+        } catch (InvalidKeyException e) {
+            return null;
+        }
+    }
+
+    @Override
+    public boolean isMD5AllowedForCrypto() {
+        return false;
+    }
+
+}