Example usage for org.bouncycastle.asn1.x509 TBSCertificateStructure TBSCertificateStructure

Introduction

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

Prototype

public TBSCertificateStructure(ASN1Sequence seq) 

Source Link

Usage

From source file:net.ripe.rpki.commons.crypto.x509cert.X509CertificateUtil.java

License:BSD License

/**
 * Get a base 64-encoded, DER-encoded X.509 subjectPublicKeyInfo as used for the Trust Anchor Locator (TAL)
 *
 * @throws X509CertificateOperationException
 *
 * @throws IOException/*from w  ww. ja  v a 2 s.co m*/
 */
public static String getEncodedSubjectPublicKeyInfo(X509Certificate certificate) {

    byte[] tbsCertificate;
    try {
        tbsCertificate = certificate.getTBSCertificate();
    } catch (CertificateEncodingException e) {
        throw new X509CertificateOperationException("Can't extract TBSCertificate from certificate", e);
    }
    ASN1Sequence tbsCertificateSequence = (ASN1Sequence) Asn1Util.decode(tbsCertificate);
    TBSCertificateStructure tbsCertificateStructure = new TBSCertificateStructure(tbsCertificateSequence);
    SubjectPublicKeyInfo subjectPublicKeyInfo = tbsCertificateStructure.getSubjectPublicKeyInfo();

    try {
        byte[] data = subjectPublicKeyInfo.getEncoded();
        Base64Encoder encoder = new Base64Encoder();
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        encoder.encode(data, 0, data.length, out);
        out.flush();
        return out.toString();
    } catch (IOException e) {
        throw new X509CertificateOperationException("Can't encode SubjectPublicKeyInfo for certificate", e);
    }
}

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