Example usage for org.bouncycastle.asn1.x509 X509CertificateStructure getIssuer

Introduction

In this page you can find the example usage for org.bouncycastle.asn1.x509 X509CertificateStructure getIssuer.

Prototype

public X500Name getIssuer() 

Source Link

Usage

From source file:com.yacme.ext.oxsit.Helpers.java

License:Open Source License

public static String getIssuerName(X509Certificate _Cert) {
    //convert to bouncycaste
    String sRet = "";

    ByteArrayInputStream as;//from  w ww .  ja v  a  2 s  .  co  m
    try {
        as = new ByteArrayInputStream(_Cert.getEncoded());
        ASN1InputStream aderin = new ASN1InputStream(as);
        DERObject ado;
        ado = aderin.readObject();
        X509CertificateStructure _aX509 = new X509CertificateStructure((ASN1Sequence) ado);
        //extract the name, same as in display         
        X509Name aName = _aX509.getIssuer();
        Vector<DERObjectIdentifier> oidv = aName.getOIDs();
        HashMap<DERObjectIdentifier, String> hm = new HashMap<DERObjectIdentifier, String>(20);
        Vector<?> values = aName.getValues();
        for (int i = 0; i < oidv.size(); i++) {
            hm.put(oidv.elementAt(i), values.elementAt(i).toString());
        }
        //look for givename (=nome di battesimo)
        //see BC source code for details about DefaultLookUp behaviour
        DERObjectIdentifier oix;
        if (sRet.length() == 0) {
            //check for O
            oix = (DERObjectIdentifier) (X509Name.DefaultLookUp.get("o"));
            if (hm.containsKey(oix)) {
                sRet = hm.get(oix).toString();
            }
        }
        if (sRet.length() == 0) {
            //check for CN
            oix = (DERObjectIdentifier) (X509Name.DefaultLookUp.get("cn"));
            if (hm.containsKey(oix)) {
                sRet = hm.get(oix).toString();
            }
        }
        if (sRet.length() == 0) {
            //if still not, check for pseudodym
            oix = (DERObjectIdentifier) (X509Name.DefaultLookUp.get("pseudonym"));
            if (hm.containsKey(oix))
                sRet = hm.get(oix).toString();
        }
        //check for CN
        oix = (DERObjectIdentifier) (X509Name.DefaultLookUp.get("cn"));
        if (hm.containsKey(oix)) {
            sRet = sRet + ((sRet.length() > 0) ? ", " : "") + hm.get(oix).toString();
        }
    } catch (IOException e) {
        e.printStackTrace();
    } catch (CertificateEncodingException e) {
        e.printStackTrace();
    }
    return sRet;
}

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