java裸签名代码

import java.io.File;
import java.io.FileInputStream;
import java.security.KeyStore;
import java.security.PrivateKey;
import java.security.Signature;
import java.util.Enumeration;

import javax.security.cert.Certificate;
import javax.security.cert.X509Certificate;

import com.sun.org.apache.xml.internal.security.utils.Base64;

public class Test {
public static void main(String[] args) {
String str =sign();
verify(str);
}

public static String sign() {

PrivateKey keyOfSigner=null;
java.security.cert.Certificate certOfSigner=null;
try{
File file = new File("F:/pro.pfx");
FileInputStream fis = new FileInputStream(file);
KeyStore keyStore = KeyStore.getInstance("PKCS12");
keyStore.load(fis, "password".toCharArray());
fis.close();

Enumeration enums = keyStore.aliases();
while (enums.hasMoreElements()) {
String keyAlias = (String) enums.nextElement();
if (keyStore.isKeyEntry(keyAlias)) {
keyOfSigner = (PrivateKey) keyStore.getKey(keyAlias,
"password".toCharArray());
certOfSigner =keyStore.getCertificate(keyAlias);
}
}

byte[] encryptedDigest;
Signature signature = Signature.getInstance("SHA1withRSA");
signature.initSign(keyOfSigner);
signature.update("123".getBytes());
encryptedDigest = signature.sign();
System.out.println(Base64.encode(encryptedDigest));
return Base64.encode(encryptedDigest);
}
catch(Exception e){
e.printStackTrace();
}

return null;
}

public static void verify(String str) {
File f = new File("D:/cert.cer");

try {
FileInputStream fs = new FileInputStream(f);
byte[] be = new byte[fs.available()];
fs.read(be);
fs.close();
Certificate x = X509Certificate.getInstance(be);
Signature signature = Signature.getInstance("SHA1withRSA");
signature.initVerify(x.getPublicKey());
signature.update("123".getBytes());
boolean b = signature
.verify(Base64
.decode(str));
//			boolean b = signature
//			.verify(Base64
//					.decode("r50rGj6Hrtq2MEHwrEcQQklEEdeQGokE6RJ84qLsRq/7CR+jdO2pSp4feQW3ufqmu2Cv/jR/T7hRI6qWXVTBZHu/+K2mUnYwk/iOJSQSvzo/fcwqC+HsNaIoWKoDJXIaBLorynd8vd5TeOzmY7FVcrSQG9xSkbA0RSKrRUk8UP1Cu3MuXE0R+YzDPElnwgMIVuM/t8R3WxVjgf4uzDbz/tgUcRHEgWAzD8YQqVR+cNUzjqpN06BmOO13pKqVO5CEY/xppXby7Y/qS7GKhIH7BYRIgoktUeh1TKZ8dsaWpjlyEOMP4YkMOZ1jvU6mGuCtlif92AVJX9OdJIMSBfjyEQ=="));
System.out.println(b);
} catch (Exception e) {
e.printStackTrace();
}

}

}