java.security.UnrecoverableKeyException:不匹配
问题:需要将RSA私钥保存在加密位置。为此,请尝试使用java.security.UnrecoverableKeyException:不匹配,java,android,encryption,Java,Android,Encryption,问题:需要将RSA私钥保存在加密位置。为此,请尝试使用KeyStore 代码片段: package com.example.encryptiontest; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.UnsupportedEncodingExcept
KeyStore
代码片段:
package com.example.encryptiontest;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.math.BigInteger;
import java.security.InvalidKeyException;
import java.security.KeyFactory;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.security.NoSuchProviderException;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.SignatureException;
import java.security.UnrecoverableEntryException;
import java.security.cert.Certificate;
import java.security.cert.CertificateEncodingException;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.security.spec.InvalidKeySpecException;
import java.security.spec.RSAPrivateKeySpec;
import java.security.spec.RSAPublicKeySpec;
import java.util.Date;
import javax.security.auth.x500.X500Principal;
import org.bouncycastle.x509.X509V1CertificateGenerator;
import android.content.Context;
import android.util.Base64;
public class Encryption {
private static final String ALIAS = "myAlias";
private static final String FILE_NAME="key_store";
private Context mContext;
public Encryption(Context context){
mContext = context;
}
public void save() throws NoSuchAlgorithmException, InvalidKeySpecException, CertificateEncodingException, InvalidKeyException, NoSuchProviderException, SignatureException, KeyStoreException, CertificateException, FileNotFoundException, UnsupportedEncodingException, IOException{
KeyPairGenerator kpg = KeyPairGenerator.getInstance("RSA");
kpg.initialize(2048);
KeyPair kp = kpg.genKeyPair();
KeyFactory fact = KeyFactory.getInstance("RSA");
RSAPublicKeySpec pub = fact.getKeySpec(kp.getPublic(),
RSAPublicKeySpec.class);
RSAPrivateKeySpec priv = fact.getKeySpec(kp.getPrivate(),
RSAPrivateKeySpec.class);
RSAPublicKeySpec keySpec = new RSAPublicKeySpec(pub.getModulus(),
pub.getPublicExponent());
PublicKey pubKey = fact.generatePublic(keySpec);
PrivateKey privateKey = fact.generatePrivate(new RSAPrivateKeySpec(
priv.getModulus(), priv.getPrivateExponent()));
saveToKeyStore(pubKey,ALIAS,mContext.getFilesDir() + FILE_NAME,privateKey);
}
public void load() throws KeyStoreException, NoSuchAlgorithmException, CertificateException, IOException, UnrecoverableEntryException{
KeyStore keyStore = KeyStore.getInstance(KeyStore.getDefaultType());
char[] password = generatePassword(ALIAS);
FileInputStream in = new FileInputStream(mContext.getFilesDir() + FILE_NAME);
keyStore.load(in, password);
KeyStore.PrivateKeyEntry keyEntry = (KeyStore.PrivateKeyEntry) keyStore
.getEntry(ALIAS, null);
PrivateKey pubKey = (PrivateKey) keyEntry.getPrivateKey();
}
private void saveToKeyStore(PublicKey publicKey, String alias,
String fileName, PrivateKey privateKey)
throws CertificateEncodingException, NoSuchProviderException,
NoSuchAlgorithmException, SignatureException, InvalidKeyException,
KeyStoreException, IOException, CertificateException,
FileNotFoundException, UnsupportedEncodingException {
X509Certificate cert = getCertificate(publicKey, privateKey);
KeyStore keyStore = KeyStore.getInstance(KeyStore.getDefaultType());
char[] password = generatePassword(alias);
keyStore.load(null);
keyStore.setKeyEntry(alias, privateKey, null,
new Certificate[] { cert });
FileOutputStream out = new FileOutputStream(fileName);
keyStore.store(out, password);
out.close();
}
private X509Certificate getCertificate(PublicKey publicKey,
PrivateKey privateKey) throws CertificateEncodingException,
NoSuchProviderException, NoSuchAlgorithmException,
SignatureException, InvalidKeyException {
Date startDate = new Date(); // time from which certificate is valid
Date expiryDate = new Date(2050, 3, 3); // time after which certificate
// is not valid
BigInteger serialNumber = BigInteger.ONE; // serial number for
// certificate
KeyPair keyPair = new KeyPair(publicKey, privateKey); // EC
// public/private
// key pair
X509V1CertificateGenerator certGen = new X509V1CertificateGenerator();
X500Principal dnName = new X500Principal("CN=Test CA Certificate");
certGen.setSerialNumber(serialNumber);
certGen.setIssuerDN(dnName);
certGen.setNotBefore(startDate);
certGen.setNotAfter(expiryDate);
certGen.setSubjectDN(dnName); // note: same as issuer
certGen.setPublicKey(keyPair.getPublic());
certGen.setSignatureAlgorithm("SHA512withRSA");
X509Certificate cert = certGen.generate(keyPair.getPrivate(), "BC");
return cert;
}
private char[] generatePassword(String userName)
throws NoSuchAlgorithmException, UnsupportedEncodingException {
String defaultUdid = android.provider.Settings.System.getString(
mContext.getContentResolver(),
android.provider.Settings.Secure.ANDROID_ID);
MessageDigest md = MessageDigest.getInstance("SHA-512");
byte[] bSalt = defaultUdid.getBytes("UTF-8");
byte[] bPw = userName.getBytes("UTF-8");
md.update(bPw);
byte[] r = md.digest(bSalt);
return Base64.encodeToString(r, Base64.URL_SAFE).toCharArray();
}
}
我使用bouncycastle库生成证书
堆栈跟踪
03-16 14:00:52.106: W/System.err(27883): java.security.UnrecoverableKeyException: no match
03-16 14:00:52.108: W/System.err(27883): at com.android.org.bouncycastle.jce.provider.JDKKeyStore$StoreEntry.getObject(JDKKeyStore.java:310)
03-16 14:00:52.110: W/System.err(27883): at com.android.org.bouncycastle.jce.provider.JDKKeyStore.engineGetKey(JDKKeyStore.java:611)
03-16 14:00:52.111: W/System.err(27883): at java.security.KeyStoreSpi.engineGetEntry(KeyStoreSpi.java:372)
03-16 14:00:52.113: W/System.err(27883): at java.security.KeyStore.getEntry(KeyStore.java:644)
03-16 14:00:52.114: W/System.err(27883): at com.example.encryptiontest.Encryption.load(Encryption.java:71)
03-16 14:00:52.115: W/System.err(27883): at com.example.encryptiontest.MainActivity.onCreate(MainActivity.java:16)
03-16 14:00:52.117: W/System.err(27883): at android.app.Activity.performCreate(Activity.java:5122)
03-16 14:00:52.118: W/System.err(27883): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1081)
03-16 14:00:52.120: W/System.err(27883): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2270)
03-16 14:00:52.121: W/System.err(27883): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2358)
03-16 14:00:52.123: W/System.err(27883): at android.app.ActivityThread.access$600(ActivityThread.java:156)
03-16 14:00:52.124: W/System.err(27883): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1340)
03-16 14:00:52.125: W/System.err(27883): at android.os.Handler.dispatchMessage(Handler.java:99)
03-16 14:00:52.126: W/System.err(27883): at android.os.Looper.loop(Looper.java:153)
03-16 14:00:52.128: W/System.err(27883): at android.app.ActivityThread.main(ActivityThread.java:5299)
03-16 14:00:52.129: W/System.err(27883): at java.lang.reflect.Method.invokeNative(Native Method)
03-16 14:00:52.130: W/System.err(27883): at java.lang.reflect.Method.invoke(Method.java:511)
03-16 14:00:52.132: W/System.err(27883): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:833)
03-16 14:00:52.133: W/System.err(27883): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600)
03-16 14:00:52.134: W/System.err(27883): at dalvik.system.NativeStart.main(Native Method)
可能是一个错误的密码。从
generatePassword
中写出密码进行调试,并使用keytool检查它是否可以读取生成的密钥库的内容
另一位Stack Overflow/Spongy Castle用户表示,在构建密钥库时,它有助于指定构造函数。对他来说:
KeyStore ks = new KeyStore("BKS","SC");
而不是
KeyStore ks = new KeyStore("BKS");
我知道您没有使用构造函数来创建密钥库,但此信息可能会有所帮助。当我执行您的代码时,我遇到一个例外,即私钥条目必须使用密码进行保护:
java.security.UnrecoverableKeyException: requested entry requires a password
at java.security.KeyStoreSpi.engineGetEntry(KeyStoreSpi.java:459)
at java.security.KeyStore.getEntry(KeyStore.java:1290)
at KeyStorage.load(KeyStorage.java:50)
at PKI.main(PKI.java:518)
看起来Java(Oracle和Android)的实现允许在没有任何保护的情况下创建私钥条目(在密钥库中,密钥库本身和每个条目可能有自己的密码保护),但在加载过程中,它们需要强制密码。要修复此问题,只需在KeyStore.getEntry()中指定密码
另一个选择是使用
PrivateKey key = (PrivateKey) keyStore.getKey(ALIAS, null);
@Barret所指的链接是
我面临着类似的问题。在我的例子中,存储和检索时的密码与字符串方法不同。尝试为调试目的提供硬编码密码 有几个地方需要改变: 1) 我将bouncycastle库更改为spongycastle
03-16 14:00:52.106: W/System.err(27883): java.security.UnrecoverableKeyException: no match
03-16 14:00:52.108: W/System.err(27883): at com.android.org.bouncycastle.jce.provider.JDKKeyStore$StoreEntry.getObject(JDKKeyStore.java:310)
03-16 14:00:52.110: W/System.err(27883): at com.android.org.bouncycastle.jce.provider.JDKKeyStore.engineGetKey(JDKKeyStore.java:611)
03-16 14:00:52.111: W/System.err(27883): at java.security.KeyStoreSpi.engineGetEntry(KeyStoreSpi.java:372)
03-16 14:00:52.113: W/System.err(27883): at java.security.KeyStore.getEntry(KeyStore.java:644)
03-16 14:00:52.114: W/System.err(27883): at com.example.encryptiontest.Encryption.load(Encryption.java:71)
03-16 14:00:52.115: W/System.err(27883): at com.example.encryptiontest.MainActivity.onCreate(MainActivity.java:16)
03-16 14:00:52.117: W/System.err(27883): at android.app.Activity.performCreate(Activity.java:5122)
03-16 14:00:52.118: W/System.err(27883): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1081)
03-16 14:00:52.120: W/System.err(27883): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2270)
03-16 14:00:52.121: W/System.err(27883): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2358)
03-16 14:00:52.123: W/System.err(27883): at android.app.ActivityThread.access$600(ActivityThread.java:156)
03-16 14:00:52.124: W/System.err(27883): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1340)
03-16 14:00:52.125: W/System.err(27883): at android.os.Handler.dispatchMessage(Handler.java:99)
03-16 14:00:52.126: W/System.err(27883): at android.os.Looper.loop(Looper.java:153)
03-16 14:00:52.128: W/System.err(27883): at android.app.ActivityThread.main(ActivityThread.java:5299)
03-16 14:00:52.129: W/System.err(27883): at java.lang.reflect.Method.invokeNative(Native Method)
03-16 14:00:52.130: W/System.err(27883): at java.lang.reflect.Method.invoke(Method.java:511)
03-16 14:00:52.132: W/System.err(27883): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:833)
03-16 14:00:52.133: W/System.err(27883): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600)
03-16 14:00:52.134: W/System.err(27883): at dalvik.system.NativeStart.main(Native Method)
2) 增加
3) 使用的keystorekeystore=KeyStore.getInstance(“BKS”、“SC”)代码>
4) 使用
原因是不同的提供者提供不同的密钥二进制表示。因此,如果您使用一个提供程序生成密钥,那么如果尝试使用另一个提供程序从二进制流还原,您可能会遇到问题能否发布异常的堆栈跟踪?如果不知道Spongy Castle的确切版本,很难说,但看起来在类路径上有多个海绵状的Castle jar,它们相互冲突。@divanov我只使用一个jar文件。这也是图书馆的最新版本
static {
Security.addProvider(new BouncyCastleProvider());
}
KeyFactory fact1 = KeyFactory.getInstance("RSA","SC");
PublicKey pubKey = fact1.generatePublic(keySpec);
PrivateKey privateKey = fact1.generatePrivate(new RSAPrivateKeySpec(priv
.getModulus(), priv.getPrivateExponent()));