Getting Key Size via SSL Certificate

Question

Good Day,
I am writing client server with SSL. I want to display certificate information for the client, so I am writing a popup window. I can't figure out how to get the size of the key used (in this case RSA). I want to display. for example.
"RSA (1024)", much the way IE does.
I know it must be in there somewhere.
... Roger
p.s. if anyone knows of a canned X509Certificate display component, please point me. I am probably writing what others have written before.

Answer 1

Here is getFormat() method of Key Interface :
     * Returns the name of the primary encoding format of this key,
     * or null if this key does not support encoding.
     * The primary encoding format is
     * named in terms of the appropriate ASN.1 data format, if an
     * ASN.1 specification for this key exists.
     * For example, the name of the ASN.1 data format for public
     * keys is <I>SubjectPublicKeyInfo</I>, as
     * defined by the X.509 standard; in this case, the returned format is
     * <code>"X.509"</code>. Similarly,
     * the name of the ASN.1 data format for private keys is
     * <I>PrivateKeyInfo</I>,
     * as defined by the PKCS #8 standard; in this case, the returned format is
     * <code>"PKCS#8"</code>.
     * @return the primary encoding format of the key.
     public String getFormat();
And what is the instance type of this PublicKey ?
This kind of object may have method undefine in the Interface.