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serega6531
2020-04-22 19:27:38 +03:00
parent 72155ba99a
commit 482d74f4b4
3 changed files with 229 additions and 1 deletions
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17
src/main/java/ru/serega6531/packmate/service/optimization/TlsDecryptor.java
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@@ -2,6 +2,7 @@ package ru.serega6531.packmate.service.optimization;
import lombok.RequiredArgsConstructor;
import lombok.SneakyThrows;
import org.apache.commons.lang3.ArrayUtils;
import ru.serega6531.packmate.model.Packet;
import ru.serega6531.packmate.service.optimization.tls.TlsPacket;
import ru.serega6531.packmate.service.optimization.tls.keys.TlsKeyUtils;
@@ -13,6 +14,7 @@ import ru.serega6531.packmate.service.optimization.tls.records.handshakes.BasicR
import ru.serega6531.packmate.service.optimization.tls.records.handshakes.ClientHelloHandshakeRecordContent;
import ru.serega6531.packmate.service.optimization.tls.records.handshakes.HandshakeRecordContent;
import ru.serega6531.packmate.service.optimization.tls.records.handshakes.ServerHelloHandshakeRecordContent;
import ru.serega6531.packmate.utils.PRF;
import ru.serega6531.packmate.utils.TlsUtils;
import javax.crypto.Cipher;
@@ -21,11 +23,15 @@ import java.io.File;
import java.security.cert.X509Certificate;
import java.security.interfaces.RSAPrivateKey;
import java.util.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.stream.Collectors;
@RequiredArgsConstructor
public class TlsDecryptor {
private static final Pattern cipherSuitePattern = Pattern.compile("TLS_RSA_WITH_([A-Z0-9_]+)_([A-Z0-9]+)");
private final List<Packet> packets;
@SneakyThrows
@@ -50,7 +56,12 @@ public class TlsDecryptor {
CipherSuite cipherSuite = serverHello.getCipherSuite();
if(cipherSuite.name().startsWith("TLS_RSA_")) {
if(cipherSuite.name().startsWith("TLS_RSA_WITH_")) {
Matcher matcher = cipherSuitePattern.matcher(cipherSuite.name());
matcher.find();
String blockCipher = matcher.group(1);
String hashAlgo = matcher.group(2);
BasicRecordContent clientKeyExchange = (BasicRecordContent)
getHandshake(tlsPackets.values(), HandshakeType.CLIENT_KEY_EXCHANGE).orElseThrow();
@@ -59,7 +70,11 @@ public class TlsDecryptor {
Cipher cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding");
cipher.init(Cipher.DECRYPT_MODE, privateKey);
byte[] preMaster = cipher.doFinal(encryptedPreMaster);
byte[] seed1 = ArrayUtils.addAll(clientRandom, serverRandom);
byte[] seed2 = ArrayUtils.addAll(serverRandom, clientRandom);
byte[] masterSecret = PRF.getBytes(preMaster, "master secret", seed1, 48);
byte[] expanded = PRF.getBytes(masterSecret, "key expansion", seed2, 136);
System.out.println();
}