在jmeter中运行录制的脚本以进行AWS Cognito登录时出现问题 [英] Issue while running the recorded scripts in jmeter for aws cognito login
问题描述
我正在对使用Aws cognito登录的应用程序进行性能测试. 错误消息
I am doing performance testing for application which is using Aws cognito login. Error message
{"__type":"NotAuthorizedException","message":"Incorrect username or password."}
当我在jmeter中重新运行记录的脚本时,显示
.作为第一个API调用的输入,我们传递的动态变量SRP_A
是什么?将此变量与用户名,身份验证流,客户端ID一起传递,将提供质询参数.
is shown when i rerun the recorded scripts in jmeter. What is the dynamic variable SRP_A
which we are passing as the input for the first API call? Passing this variable along with username, Auth flow, client Id gives the challenge parameters.
我必须了解什么是SRP_A
以及如何在jmeter中对其进行处理.
I have to understand what is SRP_A
and how to handle it in jmeter.
推荐答案
I don't think Cognito login is something you can record and replay, you need to implement User Pool Authentication Flow manually.
关于Cognito,最简单的方法是使用 AWS Java SDK a href ="https://www.blazemeter.com/blog/groovy-new-black/" rel ="nofollow noreferrer">使用Groovy语言的JSR223测试元素
With regards to Cognito the easiest way is using AWS Java SDK from JSR223 Test Elements using Groovy language
示例帮助程序类,用于从用户名中获取SRP_A
值:
Example helper class for getting SRP_A
value out of the username:
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package com.math.pro.ak.util.cognito
import com.amazonaws.AmazonClientException
import com.amazonaws.util.StringUtils
import java.security.MessageDigest
import java.security.NoSuchAlgorithmException
import java.security.SecureRandom
/**
*
* @author marcus
*/
public class AuthenticationHelper {
private BigInteger a;
private BigInteger A;
private String poolName;
public AuthenticationHelper(String userPoolName) {
do {
a = new BigInteger(EPHEMERAL_KEY_LENGTH, SECURE_RANDOM).mod(N);
A = GG.modPow(a, N);
}
while (A.mod(N).equals(BigInteger.ZERO));
if (userPoolName.contains("_")) {
poolName = userPoolName.split("_", 2)[1];
} else {
poolName = userPoolName;
}
}
public BigInteger geta() {
return a;
}
public BigInteger getA() {
return A;
}
private static final String HEX_N = "FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1"
+ "29024E088A67CC74020BBEA63B139B22514A08798E3404DD"
+ "EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245"
+ "E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED"
+ "EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3D"
+ "C2007CB8A163BF0598DA48361C55D39A69163FA8FD24CF5F"
+ "83655D23DCA3AD961C62F356208552BB9ED529077096966D"
+ "670C354E4ABC9804F1746C08CA18217C32905E462E36CE3B"
+ "E39E772C180E86039B2783A2EC07A28FB5C55DF06F4C52C9"
+ "DE2BCBF6955817183995497CEA956AE515D2261898FA0510"
+ "15728E5A8AAAC42DAD33170D04507A33A85521ABDF1CBA64"
+ "ECFB850458DBEF0A8AEA71575D060C7DB3970F85A6E1E4C7"
+ "ABF5AE8CDB0933D71E8C94E04A25619DCEE3D2261AD2EE6B"
+ "F12FFA06D98A0864D87602733EC86A64521F2B18177B200C"
+ "BBE117577A615D6C770988C0BAD946E208E24FA074E5AB31"
+ "43DB5BFCE0FD108E4B82D120A93AD2CAFFFFFFFFFFFFFFFF";
private static final BigInteger N = new BigInteger(HEX_N, 16);
private static final BigInteger GG = BigInteger.valueOf(2);
private static final BigInteger KK;
private static final int EPHEMERAL_KEY_LENGTH = 1024;
private static final int DERIVED_KEY_SIZE = 16;
private static final String DERIVED_KEY_INFO = "Caldera Derived Key";
private static final ThreadLocal<MessageDigest> THREAD_MESSAGE_DIGEST = new ThreadLocal<MessageDigest>() {
@Override
protected MessageDigest initialValue() {
try {
return MessageDigest.getInstance("SHA-256");
} catch (final NoSuchAlgorithmException e) {
throw new AmazonClientException("Exception in authentication", e);
}
}
};
private static final SecureRandom SECURE_RANDOM;
static {
try {
SECURE_RANDOM = SecureRandom.getInstance("SHA1PRNG");
final MessageDigest messageDigest = THREAD_MESSAGE_DIGEST.get();
messageDigest.reset();
messageDigest.update(N.toByteArray());
final byte[] digest = messageDigest.digest(GG.toByteArray());
KK = new BigInteger(1, digest);
} catch (final NoSuchAlgorithmException e) {
throw new AmazonClientException(e.getMessage(), e);
}
}
public byte[] getPasswordAuthenticationKey(String userId,
String userPassword,
BigInteger B,
BigInteger salt) {
// Authenticate the password
// u = H(A, B)
final MessageDigest messageDigest = THREAD_MESSAGE_DIGEST.get();
messageDigest.reset();
messageDigest.update(A.toByteArray());
final BigInteger u = new BigInteger(1, messageDigest.digest(B.toByteArray()));
if (u.equals(BigInteger.ZERO)) {
throw new AmazonClientException("Hash of A and B cannot be zero");
}
// x = H(salt | H(poolName | userId | ":" | password))
messageDigest.reset();
messageDigest.update(poolName.getBytes(StringUtils.UTF8));
messageDigest.update(userId.getBytes(StringUtils.UTF8));
messageDigest.update(":".getBytes(StringUtils.UTF8));
final byte[] userIdHash = messageDigest.digest(userPassword.getBytes(StringUtils.UTF8));
messageDigest.reset();
messageDigest.update(salt.toByteArray());
final BigInteger x = new BigInteger(1, messageDigest.digest(userIdHash));
final BigInteger s = (B.subtract(KK.multiply(GG.modPow(x, N)))
.modPow(a.add(u.multiply(x)), N)).mod(N);
Hkdf hkdf = null;
try {
hkdf = Hkdf.getInstance("HmacSHA256");
} catch (final NoSuchAlgorithmException e) {
throw new AmazonClientException(e.getMessage(), e);
}
hkdf.init(s.toByteArray(), u.toByteArray());
final byte[] key = hkdf.deriveKey(DERIVED_KEY_INFO, DERIVED_KEY_SIZE);
return key;
}
}
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