解码签名字节时出错:“quot;java.security.SignatureException:解码签名字节时出错”;
在我的类中尝试验证ECDSA签名时出现此错误。错误代码为:解码签名字节时出错:“quot;java.security.SignatureException:解码签名字节时出错”;,java,eclipse,security,digital-signature,ecdsa,Java,Eclipse,Security,Digital Signature,Ecdsa,在我的类中尝试验证ECDSA签名时出现此错误。错误代码为: java.security.SignatureException: error decoding signature bytes. at org.bouncycastle.jcajce.provider.asymmetric.util.DSABase.engineVerify(Unknown Source) at java.security.Signature$Delegate.engineVerify(Signature.java:1
java.security.SignatureException: error decoding signature bytes.
at org.bouncycastle.jcajce.provider.asymmetric.util.DSABase.engineVerify(Unknown Source)
at java.security.Signature$Delegate.engineVerify(Signature.java:1172)
at java.security.Signature.verify(Signature.java:623)
at SDSGeneration.Signing.verify_signature(Signing.java:88)
at com.sdsweb.modele.VerificationBox.checkSignature(VerificationBox.java:121)
at com.sdsweb.modele.VerificationBox.verifieur(VerificationBox.java:84)
at com.sdsweb.servlet.Authentification.doGet(Authentification.java:55)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:620)......
我在VerificationBox.java类中调用此方法:
public Map<Integer, String> checkSignature(String data_digest, Signature SignObject, PublicKey publicKey, byte[] Signaturebyte) throws InvalidKeyException, SignatureException, NoSuchProviderException, NoSuchAlgorithmException{
Map<Integer, String> erreur_signature = new HashMap<Integer, String>();
Signing SignVerifier = new Signing();
SignVerifier.setEcdsa_signature();
SignVerifier.verify_signature(publicKey, SignVerifier.getEcdsa_signature(), data_digest, Signaturebyte);
if (SignVerifier.getVerify_result()){
erreur_signature.put(j, "SIGNATURE ÉRONNÉ, CODE SDS INVALIDE");
j++;
}
return null;
}
我编写了一个测试类来测试SDSGgeneration。对代码进行签名,一切都很好,对数据进行签名和验证,但是在我的项目中导入和使用数据时,出现了以下错误。这是测试类代码:
package SDSGeneration;
import java.security.InvalidAlgorithmParameterException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.security.NoSuchProviderException;
import java.security.SignatureException;
public class TestSigning {
public TestSigning() {
// TODO Auto-generated constructor stub
}
public static void main(String[] args) throws NoSuchAlgorithmException, NoSuchProviderException, InvalidAlgorithmParameterException, InvalidKeyException, SignatureException {
// TODO Auto-generated method stub
GenerateKeyPair new_keypair = new GenerateKeyPair();
Signing testSign = new Signing();
testSign.setKeygen(new_keypair.getKeygen());
testSign.setEcdsa_signature();
testSign.generate_signature(testSign.getKeygen(), testSign.getEcdsa_signature(), "Fanfe Yvon");
testSign.verify_signature(testSign.getKeygen().getPublic(), testSign.getEcdsa_signature(), "Fanfe Yvon", testSign.getSignature());
System.out.println("Signature result : " + testSign.getVerify_result() + " ; signature of data : " + testSign.getSignature());
}
}
问题是我使用了错误的字符集将签名编码到存储器中 在存储之前,我必须将其编码为Base64并将其转换为UTF-8,如下所示:
String signTostring = DatatypeConverter.printBase64Binary(signature);
signTostring = URLEncoder.encode(signTostring, "UTF-8");
当我想用它的时候,我会做反转动作来得到原始签名
String st = URLDecoder.decode(code.getSignature(), "UTF-8");
byte[] sign_byte = DatatypeConverter.parseBase64Binary(st);
这个SDSGGeneration.Signing类做什么?SDSGGeneration签名类负责签名和验证签名。是包含负责签名验证的checkSignature()方法的类。您是否检查过(例如,使用ASN.1转储)ecdsa签名的编码方式?有不同的编码,可能您的bc版本不支持所有编码。如果没有输入、输出,当然还有示例密钥,就不可能有好的答案。我可以理解英语不是你的母语,但是对于Java,请遵守(或一些代码约定的派生语)。
String st = URLDecoder.decode(code.getSignature(), "UTF-8");
byte[] sign_byte = DatatypeConverter.parseBase64Binary(st);