1 files changed, 158 insertions, 0 deletions
diff --git a/keystore/java/android/security/CertTool.java b/keystore/java/android/security/CertTool.java
new file mode 100644
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--- /dev/null
+++ b/keystore/java/android/security/CertTool.java
@@ -0,0 +1,158 @@
+/*
+ * Copyright (C) 2009 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.security;
+
+import android.content.Context;
+import android.content.Intent;
+import android.security.Keystore;
+import android.text.TextUtils;
+
+
+/**
+ * The CertTool class provides the functions to list the certs/keys,
+ * generate the certificate request(csr) and store the certificate into
+ * keystore.
+ *
+ * {@hide}
+ */
+public class CertTool {
+    static {
+        System.loadLibrary("certtool_jni");
+    }
+
+    public static final String ACTION_ADD_CREDENTIAL =
+            "android.security.ADD_CREDENTIAL";
+    public static final String KEY_TYPE_NAME = "typeName";
+    public static final String KEY_ITEM = "item";
+    public static final String KEY_NAMESPACE = "namespace";
+    public static final String KEY_DESCRIPTION = "description";
+
+    private static final String TAG = "CertTool";
+
+    private static final String TITLE_CA_CERT = "CA Certificate";
+    private static final String TITLE_USER_CERT = "User Certificate";
+    private static final String TITLE_PKCS12_KEYSTORE = "PKCS12 Keystore";
+    private static final String TITLE_PRIVATE_KEY = "Private Key";
+    private static final String UNKNOWN = "Unknown";
+    private static final String ISSUER_NAME = "Issuer Name:";
+    private static final String DISTINCT_NAME = "Distinct Name:";
+
+    private static final String CA_CERTIFICATE = "CACERT";
+    private static final String USER_CERTIFICATE = "USRCERT";
+    private static final String USER_KEY = "USRKEY";
+
+    private static final String KEYNAME_DELIMITER = "_";
+    private static final Keystore sKeystore = Keystore.getInstance();
+
+    private native String generateCertificateRequest(int bits, String subject);
+    private native boolean isPkcs12Keystore(byte[] data);
+    private native int generateX509Certificate(byte[] data);
+    private native boolean isCaCertificate(int handle);
+    private native String getIssuerDN(int handle);
+    private native String getCertificateDN(int handle);
+    private native String getPrivateKeyPEM(int handle);
+    private native void freeX509Certificate(int handle);
+
+    private static CertTool singleton = null;
+
+    private CertTool() { }
+
+    public static final CertTool getInstance() {
+        if (singleton == null) {
+            singleton = new CertTool();
+        }
+        return singleton;
+    }
+
+    public String getUserPrivateKey(String key) {
+        return USER_KEY + KEYNAME_DELIMITER + key;
+    }
+
+    public String getUserCertificate(String key) {
+        return USER_CERTIFICATE + KEYNAME_DELIMITER + key;
+    }
+
+    public String getCaCertificate(String key) {
+        return CA_CERTIFICATE + KEYNAME_DELIMITER + key;
+    }
+
+    public String[] getAllUserCertificateKeys() {
+        return sKeystore.listKeys(USER_KEY);
+    }
+
+    public String[] getAllCaCertificateKeys() {
+        return sKeystore.listKeys(CA_CERTIFICATE);
+    }
+
+    public String[] getSupportedKeyStrenghs() {
+        return new String[] {"High Grade", "Medium Grade"};
+    }
+
+    private int getKeyLength(int index) {
+        if (index == 0) return 2048;
+        return 1024;
+    }
+
+    public String generateKeyPair(int keyStrengthIndex, String challenge,
+            String dirName) {
+        return generateCertificateRequest(getKeyLength(keyStrengthIndex),
+                dirName);
+    }
+
+    private Intent prepareIntent(String title, byte[] data, String namespace,
+            String issuer, String distinctName) {
+        Intent intent = new Intent(ACTION_ADD_CREDENTIAL);
+        intent.putExtra(KEY_TYPE_NAME, title);
+        intent.putExtra(KEY_ITEM + "0", data);
+        intent.putExtra(KEY_NAMESPACE + "0", namespace);
+        intent.putExtra(KEY_DESCRIPTION + "0", ISSUER_NAME + issuer);
+        intent.putExtra(KEY_DESCRIPTION + "1", DISTINCT_NAME + distinctName);
+        return intent;
+    }
+
+    private void addExtraIntentInfo(Intent intent, String namespace,
+            String data) {
+        intent.putExtra(KEY_ITEM + "1", data);
+        intent.putExtra(KEY_NAMESPACE + "1", namespace);
+    }
+
+    public synchronized void addCertificate(byte[] data, Context context) {
+        int handle;
+        Intent intent = null;
+
+        if (isPkcs12Keystore(data)) {
+            intent = prepareIntent(TITLE_PKCS12_KEYSTORE, data, USER_KEY,
+                    UNKNOWN, UNKNOWN);
+        } else if ((handle = generateX509Certificate(data)) != 0) {
+            String issuer = getIssuerDN(handle);
+            String distinctName = getCertificateDN(handle);
+            String privateKeyPEM = getPrivateKeyPEM(handle);
+            if (isCaCertificate(handle)) {
+                intent = prepareIntent(TITLE_CA_CERT, data, CA_CERTIFICATE,
+                        issuer, distinctName);
+            } else {
+                intent = prepareIntent(TITLE_USER_CERT, data, USER_CERTIFICATE,
+                        issuer, distinctName);
+                if (!TextUtils.isEmpty(privateKeyPEM)) {
+                    addExtraIntentInfo(intent, USER_KEY, privateKeyPEM);
+                }
+            }
+            freeX509Certificate(handle);
+        }
+        if (intent != null) context.startActivity(intent);
+    }
+}