如何在自定义应用程序中使用移动指纹传感器 [英] How to use mobile finger print sensor in custom app
问题描述
如何制作使用移动指纹的移动应用程序&将指纹数据存储在sqlite数据库&比较...
我尝试过：
keyguardManager =
（KeyguardManager）getSystemService（KEYGUARD_SERVICE）;
fingerprintManager =
（FingerprintManager）getSystemService（FINGERPRINT_SERVICE）;
protected void generateKey（）{
try {
keyStore = KeyStore.getInstance（AndroidKeyStore）;
} catch（异常e）{
e.printStackTrace（）;
}
试试{
keyGenerator = KeyGenerator.getInstance（
KeyProperties.KEY_ALGORITHM_AES，
AndroidKeyStore）;
} catch（NoSuchAlgorithmException |
NoSuchProviderException e）{
抛出新的RuntimeException（
无法获取KeyGenerator ins tance，e）;
}
试试{
keyStore .load（null）;
keyGenerator.init（新
KeyGenParameterSpec.Builder（KEY_NAME，
KeyProperties.PURPOSE_ENCRYPT |
KeyProperties.PURPOSE_DECRYPT）
.setBlockModes（KeyProperties.BLOCK_MODE_CBC）
.setUserAuthenticationRequired（true）
.setEncryptionPaddings（
KeyProperties.ENCRYPTION_PADDING_PKCS7）
.build（））;
keyGenerator.generateKey（）;
} catch（NoSuchAlgorithmException |
InvalidAlgorithmParameterException
| CertificateException | IOException e）{
抛出新的RuntimeException（e）;
}
}
@TargetApi（Build.VERSION_CODES.M）
public boolean cipherInit（）{
try {
cipher = Cipher.getInstance（
KeyProperties.KEY_ALGORITHM_AES +/
+ KeyProperties.BLOCK_MODE_CBC +/
+ KeyProperties。 ENCRYPTION_PADDING_PKCS7）;
} catch（NoSuchAlgorithmException |
NoSuchPaddingException e）{
抛出新的RuntimeException（Failed to get Cipher，e）;
}
尝试{
keyStore.load（null）;
SecretKey key =（SecretKey）keyStore.getKey（KEY_NAME，
null）;
cipher.init（Cipher.ENCRYPT_MODE，key）;
返回true;
} catch（KeyPermanentlyInvalidatedException e）{
返回false;
} catch（KeyStoreException | CertificateException
| UnrecoverableKeyException | IOException
| NoSuchAlgorithmException | InvalidKeyException e）{
抛出新的RuntimeException（无法初始化密码，e）;
}
}
how to make mobile apps that use mobile finger print & store finger print data on sqlite database & compare...
What I have tried:
keyguardManager =
(KeyguardManager) getSystemService(KEYGUARD_SERVICE);
fingerprintManager =
(FingerprintManager) getSystemService(FINGERPRINT_SERVICE);
protected void generateKey() {
try {
keyStore = KeyStore.getInstance("AndroidKeyStore");
} catch (Exception e) {
e.printStackTrace();
}
try {
keyGenerator = KeyGenerator.getInstance(
KeyProperties.KEY_ALGORITHM_AES,
"AndroidKeyStore");
} catch (NoSuchAlgorithmException |
NoSuchProviderException e) {
throw new RuntimeException(
"Failed to get KeyGenerator instance", e);
}
try {
keyStore.load(null);
keyGenerator.init(new
KeyGenParameterSpec.Builder(KEY_NAME,
KeyProperties.PURPOSE_ENCRYPT |
KeyProperties.PURPOSE_DECRYPT)
.setBlockModes(KeyProperties.BLOCK_MODE_CBC)
.setUserAuthenticationRequired(true)
.setEncryptionPaddings(
KeyProperties.ENCRYPTION_PADDING_PKCS7)
.build());
keyGenerator.generateKey();
} catch (NoSuchAlgorithmException |
InvalidAlgorithmParameterException
| CertificateException | IOException e) {
throw new RuntimeException(e);
}
}
@TargetApi(Build.VERSION_CODES.M)
public boolean cipherInit() {
try {
cipher = Cipher.getInstance(
KeyProperties.KEY_ALGORITHM_AES + "/"
+ KeyProperties.BLOCK_MODE_CBC + "/"
+ KeyProperties.ENCRYPTION_PADDING_PKCS7);
} catch (NoSuchAlgorithmException |
NoSuchPaddingException e) {
throw new RuntimeException("Failed to get Cipher", e);
}
try {
keyStore.load(null);
SecretKey key = (SecretKey) keyStore.getKey(KEY_NAME,
null);
cipher.init(Cipher.ENCRYPT_MODE, key);
return true;
} catch (KeyPermanentlyInvalidatedException e) {
return false;
} catch (KeyStoreException | CertificateException
| UnrecoverableKeyException | IOException
| NoSuchAlgorithmException | InvalidKeyException e) {
throw new RuntimeException("Failed to init Cipher", e);
}
}
推荐答案
实际上你不能。指纹API不支持您要查找的内容。指纹数据由安卓系统存储在安全的地方，无法访问。
但您可以要求系统对用户进行身份验证。这是一个 github [ ^ ]来源。
Actually you can't. Fingerprint API doesn't support the things you are looking for. Fingerprint data are stored in a secure place by android system and are not accessible.
But you can ask the system to authenticate the user. Here's a github [^] source for you.
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