How to digitally sign the message using digital certificate and BaseEnc


S

suresh123kiran

From: suresh123kiran <[email protected]>

Hi All ... I am working on webservices.... I need to digitally sign a message
in which AcknowledgementNo using digital Certificate with X.509 certificate
private key. I tried this code but it showing invalid signature Encoding. Can
anyone pls us to digitally sign.
Here is the below Java code to sign the AcknowledgementNo,Pls help me. Thanks
in advance.


public class DigiAckNo {
static class PrivateKeyAndCertChain {
public PrivateKey mPrivateKey;
}

private static KeyStore loadKeyStoreFromPFXFile(String aFileName,
String aKeyStorePasswd) throws
GeneralSecurityException,
IOException {
String PKCS12_KEYSTORE_TYPE = "PKCS12";
KeyStore keyStore = KeyStore.getInstance(PKCS12_KEYSTORE_TYPE);
FileInputStream keyStoreStream = new
FileInputStream(aFileName);
char[] password = aKeyStorePasswd.toCharArray();
keyStore.load(keyStoreStream, password);
return keyStore;
}


private static PrivateKeyAndCertChain getPrivateKeyAndCertChain(
KeyStore aKeyStore, String aKeyPassword)
throws GeneralSecurityException {
char[] password = aKeyPassword.toCharArray();
Enumeration<String> aliasesEnum = aKeyStore.aliases();
if (aliasesEnum.hasMoreElements()) {
String alias = (String) aliasesEnum.nextElement();
Certificate[] certificationChain = aKeyStore
.getCertificateChain(alias);
Certificate certificate509 =
aKeyStore.getCertificate(alias);

PrivateKey privateKey = (PrivateKey)
aKeyStore.getKey(alias,
password);
PrivateKeyAndCertChain result = new
PrivateKeyAndCertChain();
result.mPrivateKey = privateKey;
return result;
} else {
throw new KeyStoreException("The keystore is empty!");
}
}

private static byte[] signAckno(PrivateKey aPrivateKey)
throws GeneralSecurityException, IOException {
String DIGITAL_SIGNATURE_ALGORITHM_NAME = "SHA1withRSA";
Signature signatureAlgorithm = Signature
.getInstance(DIGITAL_SIGNATURE_ALGORITHM_NAME);
String strAckNo = "41516019";

byte[] ba = strAckNo.getBytes();

signatureAlgorithm.initSign(aPrivateKey);
signatureAlgorithm.update(ba);
byte[] digitalSignature = signatureAlgorithm.sign();
// Display plain text and signature
return digitalSignature;
}

public static String encodeBase64(byte[] rawData2) {
return Base64.encode(rawData2);
}

public static void main(String args[]) throws GeneralSecurityException,
IOException, CertificateException {
String File = "d:\\projects\\GANGADHARAN.pfx";
String pwd = "1235";
KeyStore keyStore = loadKeyStoreFromPFXFile(File, pwd);
PrivateKeyAndCertChain PrivateKeyAndCertChain =
getPrivateKeyAndCertChain(
keyStore, pwd);
PrivateKey aPrivateKey = PrivateKeyAndCertChain.mPrivateKey;
byte[] bytestr = signDocument(aPrivateKey);
String strDocumentBase64 = encodeBase64(bytestr);
System.out.println("strDocumentBase64" + strDocumentBase64);

}

}

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D

Daniele Futtorovic

To: suresh123kiran
From: Daniele Futtorovic <[email protected]>

Hi All ... I am working on webservices....
I need to digitally sign a message in which AcknowledgementNo using digital
Certificate with X.509 certificate private key.
I tried this code but it showing invalid signature Encoding. Can anyone pls us to digitally sign.
Here is the below Java code to sign the AcknowledgementNo,Pls help me.
Thanks in advance.


public class DigiAckNo {
static class PrivateKeyAndCertChain {
public PrivateKey mPrivateKey;
}

private static KeyStore loadKeyStoreFromPFXFile(String aFileName,
String aKeyStorePasswd) throws GeneralSecurityException,
IOException {
String PKCS12_KEYSTORE_TYPE = "PKCS12";
KeyStore keyStore = KeyStore.getInstance(PKCS12_KEYSTORE_TYPE);
FileInputStream keyStoreStream = new FileInputStream(aFileName);
char[] password = aKeyStorePasswd.toCharArray();
keyStore.load(keyStoreStream, password);
return keyStore;
}


private static PrivateKeyAndCertChain getPrivateKeyAndCertChain(
KeyStore aKeyStore, String aKeyPassword)
throws GeneralSecurityException {
char[] password = aKeyPassword.toCharArray();
Enumeration<String> aliasesEnum = aKeyStore.aliases();
if (aliasesEnum.hasMoreElements()) {
String alias = (String) aliasesEnum.nextElement();
Certificate[] certificationChain = aKeyStore
.getCertificateChain(alias);
Certificate certificate509 = aKeyStore.getCertificate(alias);

PrivateKey privateKey = (PrivateKey) aKeyStore.getKey(alias,
password);
PrivateKeyAndCertChain result = new PrivateKeyAndCertChain();
result.mPrivateKey = privateKey;
return result;
} else {
throw new KeyStoreException("The keystore is empty!");
}
}

private static byte[] signAckno(PrivateKey aPrivateKey)
throws GeneralSecurityException, IOException {
String DIGITAL_SIGNATURE_ALGORITHM_NAME = "SHA1withRSA";
Signature signatureAlgorithm = Signature
.getInstance(DIGITAL_SIGNATURE_ALGORITHM_NAME);
String strAckNo = "41516019";

byte[] ba = strAckNo.getBytes();

signatureAlgorithm.initSign(aPrivateKey);
signatureAlgorithm.update(ba);
byte[] digitalSignature = signatureAlgorithm.sign();
// Display plain text and signature
return digitalSignature;
}

public static String encodeBase64(byte[] rawData2) {
return Base64.encode(rawData2);
}

public static void main(String args[]) throws GeneralSecurityException,
IOException, CertificateException {
String File = "d:\\projects\\GANGADHARAN.pfx";
String pwd = "1235";
KeyStore keyStore = loadKeyStoreFromPFXFile(File, pwd);
PrivateKeyAndCertChain PrivateKeyAndCertChain = getPrivateKeyAndCertChain(
keyStore, pwd);
PrivateKey aPrivateKey = PrivateKeyAndCertChain.mPrivateKey;
byte[] bytestr = signDocument(aPrivateKey);
String strDocumentBase64 = encodeBase64(bytestr);
System.out.println("strDocumentBase64" + strDocumentBase64);

}

}
I tried this code but it showing invalid signature Encoding

Where and how exactly does it show that? Is it an exception? Or the result of
some processing? If the latter, what processing?

What exactly are your requirements? Do you really just need the signature, or
perhaps some kind of CMS envelope?

--
DF.

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* Origin: Prism bbs (1:261/38)
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S

suresh123kiran

To: suresh123kiran
From: suresh123kiran <[email protected]>

Thanks for ur reply... As i am working on Income Tax (DIT) project. They have
given third party wsdl.
I need to get the response in which i need to sent four request parameter. One
of which is signature.
So i try to sign a "AcknowledgmentNo" it showing "Signature encoding
errorUnable to process digital signature". The requirement for the signature
parameter is "AcknowledgementNo digitally signed by digital certificate and
after digitally signed it should be Base64 encoded".
I need ur help whether i am doing correct in signature parameter. If so why it
showing Signature Encoding Error.
Is any other any to process the signature. If anyother information is needed to
verify i can send to u.

--http://compgroups.net/comp.lang.java.programmer/how-to-digitally-sign-the-mes
sage-u/1693781

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* Origin: Prism bbs (1:261/38)
--- Synchronet 3.16a-Win32 NewsLink 1.98
Time Warp of the Future BBS - telnet://time.synchro.net:24
 

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