somebody <so**@body.com> wrote in message news:<pa***************************@body.com>...
When the generateCertPath line below is executed, I receive the
following message:
java.security.cert.CertificateException: unsupported encoding
This is a CA certificate from Verisign. What encoding should
I use?
-THanks
try {
// open an input stream to the file
FileInputStream fis = new FileInputStream(filename);
// instantiate a CertificateFactory for X.509
CertificateFactory cf = CertificateFactory.getInstance("X.509");
X509Certificate cert = (X509Certificate)cf.generateCertificate(fis);
//CertPath cp = cf.generateCertPath(fis, cert.getEncoded().toString());
CertPath cp = cf.generateCertPath(fis, "PKCS7");
}
catch (Exception e) {
e.printStackTrace();
}
Hello,
I encountered a message in one of Sun's Java forums that sounds
similar to what you are experiencing. The address of that message (and
the replies) is
http://forum.java.sun.com/thread.jsp...message=666032.
For your convenience, I've restated the message/replies below:
* * *
Hi,
I am trying to generate a Certificate object using CertificateFactory,
and the message "java.security.cert.CertificateException: Unsupported
encoding" happenes . The certificate type I am using is X.509. The
encoded certificate was got from the browser (begin from "-----BEGIN
CERTIFICATE-----" and end with "-----END CERTIFICATE-----"). Here is
the segment of my code. Anyone knows what the problem is? Thanks in
advance.
/** Create an instance of the certificate factory */
java.security.cert.CertificateFactory cf =
java.security.cert.CertificateFactory.getInstance( "X.509");
/** Convert base 64 encoded certificate to a byte stream */
ByteArrayInputStream bais =
new ByteArrayInputStream(encodedCert.getBytes());
/** Generate certificate */
cf.generateCertificate(bais); // exception happend here
.. . .
Hi !
If it's framed like that I would guess you need to uuDecode it first,
before you can use it.
Have a look at
http://java.sun.com/security/signExample/
That might help you.
.. . .
Hi,
Another possibility is that the cert is BASE64 encoded, you can base64
decode it using
String pemcert = "..."; // with the lines containing --- stripped off
byte[] certbytes = new sun.misc.BASE64Decoder().decodeBuffer(pemcert);
then create the CertificateFactory as before.
regards
Kevin
* * *
I hope this answer is helpful to you, and have a good day.
Jeff
www.javajeff.net 
