Java 接入 Google Authenticator
时间: 2023-11-17 08:08:51 浏览: 52
Java 接入 Google Authenticator 需要使用 Google Authenticator 官方提供的库:Google Authenticator PAM。具体步骤如下:
1. 引入依赖:
```
<dependency>
<groupId>com.warrenstrange</groupId>
<artifactId>googleauthenticator</artifactId>
<version>1.0.0</version>
</dependency>
```
2. 生成密钥:
```
GoogleAuthenticator gAuth = new GoogleAuthenticator();
final GoogleAuthenticatorKey key = gAuth.createCredentials();
String secret = key.getKey();
```
3. 校验验证码:
```
GoogleAuthenticator gAuth = new GoogleAuthenticator();
boolean isCodeValid = gAuth.authorize(secret, code);
```
相关问题
Google Authenticator 的java代码
以下是 Google Authenticator 的 Java 代码:
```java
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import java.util.Arrays;
import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;
import org.apache.commons.codec.binary.Base32;
public class GoogleAuthenticator {
// These fields are required for generating codes.
private static final int SECRET_SIZE = 10;
private static final int INTERVAL = 30;
// These fields are required for validating codes.
private static final int WINDOW_SIZE = 3;
private static final Base32 base32 = new Base32();
/**
* Generate a new secret key.
*/
public static String generateSecretKey() {
SecureRandom random = new SecureRandom();
byte[] bytes = new byte[SECRET_SIZE];
random.nextBytes(bytes);
return base32.encodeToString(bytes);
}
/**
* Generate a code for the given secret key and time.
*/
public static int generateCode(String secret, long time) throws NoSuchAlgorithmException, InvalidKeyException {
byte[] key = base32.decode(secret);
byte[] data = new byte[8];
long value = time / INTERVAL;
for (int i = 7; i >= 0; i--) {
data[i] = (byte) (value & 0xff);
value >>= 8;
}
SecretKeySpec signingKey = new SecretKeySpec(key, "HmacSHA1");
Mac mac = Mac.getInstance("HmacSHA1");
mac.init(signingKey);
byte[] hash = mac.doFinal(data);
int offset = hash[hash.length - 1] & 0xf;
int truncatedHash = 0;
for (int i = 0; i < 4; i++) {
truncatedHash <<= 8;
truncatedHash |= (hash[offset + i] & 0xff);
}
truncatedHash &= 0x7fffffff;
truncatedHash %= 1000000;
return truncatedHash;
}
/**
* Validate a code for the given secret key and time.
*/
public static boolean validateCode(String secret, int code, long time) throws NoSuchAlgorithmException, InvalidKeyException {
for (int i = -WINDOW_SIZE; i <= WINDOW_SIZE; i++) {
long t = time + i * INTERVAL;
int c = generateCode(secret, t);
if (c == code) {
return true;
}
}
return false;
}
public static void main(String[] args) throws Exception {
// Generate a new secret key.
String secret = generateSecretKey();
System.out.println("Secret key: " + secret);
// Get the current time.
long time = System.currentTimeMillis();
// Generate a code for the current time.
int code = generateCode(secret, time);
System.out.println("Code: " + code);
// Validate the code for the current time.
boolean valid = validateCode(secret, code, time);
System.out.println("Valid: " + valid);
}
}
```
这个 Java 类包含了三个方法:
- `generateSecretKey()`:生成一个新的密钥。
- `generateCode(secret, time)`:使用给定的密钥和时间生成一个验证码。
- `validateCode(secret, code, time)`:使用给定的密钥、验证码和时间验证代码是否有效。
这三个方法都使用了 Google Authenticator 协议,可以用于生成和验证 Google Authenticator 代码。
Google Authenticator 输入您的 Google Authenticator 密码
对于Google Authenticator(谷歌验证)的密码输入,实际上并没有一个固定的密码。Google Authenticator通过基于时间的一次性密码(TOTP)生成密码来进行账户验证。这种密码是根据事先与服务器约定好的密钥和当前的时间戳来生成的。当用户登录时,他们需要在Google Authenticator应用程序中输入由此算法生成的一次性密码,并将其发送到服务器进行验证。如果生成的一次性密码与服务器计算的密码一致,登录将成功。这种基于时间的算法确保了每个一次性密码只有在短时间内有效,提高了账户的安全性。所以实际上,你需要根据服务器提供的密钥和当前的时间戳,在Google Authenticator应用程序中生成对应的一次性密码,并输入该密码进行验证。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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