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关于BouncyCastle 这个问题

317991923

发贴: 1
积分: 0

于 2004-10-25 22:01

刚装完Bouncy castle 的JCE 运行一个程序，就出现问题，而且问题好像都一样，我估计是不是已经安装了SUN 提供的JCE 地缘故呀，望各位兄台多多指教。
import java.security.*;
import java.security.interfaces.*;
import javax.crypto.*;
import java.io.*;

public class RSAEnAndDecrypt {
public RSAEnAndDecrypt() {
}

public static byte[] crypt(Cipher cipher, byte[] bytes) throws Exception {

CipherInputStream ciIn = new CipherInputStream(new ByteArrayInputStream(bytes), cipher);
ByteArrayOutputStream baOut = new ByteArrayOutputStream();
CipherOutputStream ciOut = new CipherOutputStream(baOut, cipher);
int c = 0;
while ((c = ciIn.read()) >= 0) {
ciOut.write Coffee

;
}
ciOut.flush();
ciOut.close();
return baOut.toByteArray();
}

public static void main(String[] args) {
try {

KeyPairGenerator keyPairGen = KeyPairGenerator.getInstance("RSA",

new org.bouncycastle.jce.provider.
BouncyCastleProvider());
keyPairGen.initialize(1024);
KeyPair keyPair = keyPairGen.genKeyPair();
RSAPublicKey pubKey = (RSAPublicKey) keyPair.getPublic();
RSAPrivateKey priKey = (RSAPrivateKey) keyPair.getPrivate();

Cipher cipher = Cipher.getInstance("RSA",
new org.bouncycastle.jce.
provider.
BouncyCastleProvider());

String s = "1234567890abcdefghijklmnopqrstuvwxyz";

cipher.init(Cipher.ENCRYPT_MODE, priKey);
byte[] bytes = crypt(cipher, s.getBytes());

cipher.init(cipher.DECRYPT_MODE, pubKey);
bytes = crypt(cipher, bytes);
System.out.println(new String(bytes));
} catch (Exception ex) {
ex.printStackTrace();
}
}
}
出现以下异常：
Exception in thread "main" java.lang.ExceptionInInitializerError
at javax.crypto.Cipher.a(DashoA6275)
at javax.crypto.Cipher.getInstance(DashoA6275)
at security.RSAEnAndDecrypt.main(RSAEnAndDecrypt.java:41)
Caused by: java.lang.SecurityException: Cannot set up certs for trusted CAs
at javax.crypto.SunJCE_b.<clinit>(DashoA6275)
... 3 more
Caused by: java.security.PrivilegedActionException: java.security.NoSuchAlgorith
mException: MD5WITHRSA Signature not available
at java.security.AccessController.doPrivileged(Native Method)
... 4 more
Caused by: java.security.NoSuchAlgorithmException: MD5WITHRSA Signature not avai
lable
at java.security.Security.getEngineClassName(Security.java:584)
at java.security.Security.getEngineClassName(Security.java:595)
at java.security.Security.getImpl(Security.java:1044)
at java.security.Signature.getInstance(Signature.java:169)
at sun.security.x509.X509CertImpl.verify(X509CertImpl.java:425)
at sun.security.x509.X509CertImpl.verify(X509CertImpl.java:383)
at javax.crypto.SunJCE_b.c(DashoA6275)
at javax.crypto.SunJCE_b.b(DashoA6275)
at javax.crypto.SunJCE_s.run(DashoA6275)
... 5 more
Press any key to continue...

317991923 edited on 2004-10-25 22:19

作者	Re:关于BouncyCastle 这个问题 [Re:317991923]
jeffrey_he 发贴: 21 积分: 0	于 2004-10-29 10:36 你要指定使用Bouncy castle做为算法提供商，然后才能使用它提供的算法。

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