add KeyGenerator for AndroidKeyStore

src/api-impl/android/content/Context.java

@@ -130,6 +130,7 @@ public class Context extends Object {
 
 		Provider provider = new Provider("AndroidKeyStore", 1.0, "Android KeyStore provider") {};
 		provider.put("KeyStore.AndroidKeyStore", "android.security.keystore.AndroidKeyStore");
+		provider.put("KeyGenerator.AES", "android.security.keystore.KeyGenerator");
 		Security.addProvider(provider);
 
 		r.applyPackageQuirks(application_info.packageName);

src/api-impl/android/security/keystore/AndroidKeyStore.java

@@ -10,6 +10,7 @@ import java.security.NoSuchAlgorithmException;
 import java.security.UnrecoverableKeyException;
 import java.security.cert.Certificate;
 import java.security.cert.CertificateException;
+import java.util.Arrays;
 import java.util.Collections;
 import java.util.Date;
 import java.util.Enumeration;
@@ -19,12 +20,12 @@ import android.util.Slog;
 
 public class AndroidKeyStore extends KeyStoreSpi {
 
-	HashMap<String, String> map = new HashMap<>();
+	static HashMap<String, Key> map = new HashMap<>();
 
 	@Override
 	public Key engineGetKey(String alias, char[] password) throws NoSuchAlgorithmException, UnrecoverableKeyException {
-		// TODO Auto-generated method stub
-		throw new UnsupportedOperationException("Unimplemented method 'engineGetKey'");
+		System.out.println("engineGetKey alias=" + alias + " password=" + Arrays.toString(password));
+		return map.get(alias);
 	}
 
 	@Override

src/api-impl/android/security/keystore/KeyGenParameterSpec.java

@@ -0,0 +1,68 @@
+package android.security.keystore;
+
+public class KeyGenParameterSpec {
+
+	private String keystoreAlias;
+	private int purposes;
+	private int keySize;
+	private String[] blockModes;
+	private String[] encryptionPaddings;
+	private boolean userAuthenticationRequired;
+
+	public static class Builder {
+		private KeyGenParameterSpec spec = new KeyGenParameterSpec();
+
+		public Builder(String keystoreAlias, int purposes) {
+			spec.keystoreAlias = keystoreAlias;
+			spec.purposes = purposes;
+		}
+
+		public Builder setKeySize(int keySize) {
+			spec.keySize = keySize;
+			return this;
+		}
+
+		public Builder setBlockModes(String[] blockModes) {
+			spec.blockModes = blockModes;
+			return this;
+		}
+
+		public Builder setEncryptionPaddings(String[] encryptionPaddings) {
+			spec.encryptionPaddings = encryptionPaddings;
+			return this;
+		}
+
+		public Builder setUserAuthenticationRequired(boolean userAuthenticationRequired) {
+			spec.userAuthenticationRequired = userAuthenticationRequired;
+			return this;
+		}
+
+		public KeyGenParameterSpec build() {
+			return spec;
+		}
+	}
+
+	public int getKeySize() {
+		return keySize;
+	}
+
+	public String[] getBlockModes() {
+		return blockModes;
+	}
+
+	public int getPurposes() {
+		return purposes;
+	}
+
+	public String[] getEncryptionPaddings() {
+		return encryptionPaddings;
+	}
+
+	public boolean isUserAuthenticationRequired() {
+		return userAuthenticationRequired;
+	}
+
+	public String getKeystoreAlias() {
+		return keystoreAlias;
+	}
+}

src/api-impl/android/security/keystore/KeyGenerator.java

@@ -0,0 +1,50 @@
+package android.security.keystore;
+
+import java.security.InvalidAlgorithmParameterException;
+import java.security.NoSuchAlgorithmException;
+import java.security.NoSuchProviderException;
+import java.security.SecureRandom;
+import java.security.spec.AlgorithmParameterSpec;
+
+import javax.crypto.KeyGeneratorSpi;
+import javax.crypto.SecretKey;
+
+public class KeyGenerator extends KeyGeneratorSpi {
+
+	private javax.crypto.KeyGenerator keyGenerator;
+	private AlgorithmParameterSpec params;
+
+	@Override
+	protected SecretKey engineGenerateKey() {
+		System.out.println("generating key with alias " + ((KeyGenParameterSpec)params).getKeystoreAlias());
+		SecretKey key = keyGenerator.generateKey();
+		AndroidKeyStore.map.put(((KeyGenParameterSpec)params).getKeystoreAlias(), key);
+		return key;
+	}
+
+	@Override
+	protected void engineInit(SecureRandom random) {
+		// TODO Auto-generated method stub
+		throw new UnsupportedOperationException("Unimplemented method 'engineInit'");
+	}
+
+	@Override
+	protected void engineInit(AlgorithmParameterSpec params, SecureRandom random)
+			throws InvalidAlgorithmParameterException {
+		try {
+			keyGenerator = javax.crypto.KeyGenerator.getInstance("AES", "BC");
+			this.params = params;
+			keyGenerator.init(random);
+		} catch (NoSuchAlgorithmException | NoSuchProviderException e) {
+			e.printStackTrace();
+			throw new UnsupportedOperationException("Unimplemented method 'engineInit'");
+		}
+	}
+
+	@Override
+	protected void engineInit(int keysize, SecureRandom random) {
+		// TODO Auto-generated method stub
+		throw new UnsupportedOperationException("Unimplemented method 'engineInit'");
+	}
+	
+}

src/api-impl/meson.build

@@ -373,6 +373,8 @@ srcs = [
 	'android/provider/Settings.java',
 	'android/provider/UserDictionary.java',
 	'android/security/keystore/AndroidKeyStore.java',
+	'android/security/keystore/KeyGenerator.java',
+	'android/security/keystore/KeyGenParameterSpec.java',
 	'android/service/media/MediaBrowserService.java',
 	'android/speech/tts/TextToSpeech.java',
 	'android/telecom/ConnectionService.java',