Java AlgorithmId.encode方法代码示例

import sun.security.x509.AlgorithmId; //导入方法依赖的package包/类
/**
 * Create the signed certificate request.  This will later be
 * retrieved in either string or binary format.
 *
 * @param subject identifies the signer (by X.500 name).
 * @param signature private key and signing algorithm to use.
 * @exception IOException on errors.
 * @exception CertificateException on certificate handling errors.
 * @exception SignatureException on signature handling errors.
 */
public void encodeAndSign(X500Name subject, Signature signature)
throws CertificateException, IOException, SignatureException {
    DerOutputStream out, scratch;
    byte[]          certificateRequestInfo;
    byte[]          sig;

    if (encoded != null)
        throw new SignatureException("request is already signed");

    this.subject = subject;

    /*
     * Encode cert request info, wrap in a sequence for signing
     */
    scratch = new DerOutputStream();
    scratch.putInteger(BigInteger.ZERO);            // PKCS #10 v1.0
    subject.encode(scratch);                        // X.500 name
    scratch.write(subjectPublicKeyInfo.getEncoded()); // public key
    attributeSet.encode(scratch);

    out = new DerOutputStream();
    out.write(DerValue.tag_Sequence, scratch);      // wrap it!
    certificateRequestInfo = out.toByteArray();
    scratch = out;

    /*
     * Sign it ...
     */
    signature.update(certificateRequestInfo, 0,
            certificateRequestInfo.length);
    sig = signature.sign();

    /*
     * Build guts of SIGNED macro
     */
    AlgorithmId algId = null;
    try {
        algId = AlgorithmId.get(signature.getAlgorithm());
    } catch (NoSuchAlgorithmException nsae) {
        throw new SignatureException(nsae);
    }
    algId.encode(scratch);     // sig algorithm
    scratch.putBitString(sig);                      // sig

    /*
     * Wrap those guts in a sequence
     */
    out = new DerOutputStream();
    out.write(DerValue.tag_Sequence, scratch);
    encoded = out.toByteArray();
}
 

import sun.security.x509.AlgorithmId; //导入方法依赖的package包/类
/**
 * Returns the ASN.1 encoding of this object.
 * @return the ASN.1 encoding.
 * @exception IOException if error occurs when constructing its
 * ASN.1 encoding.
 */
public byte[] getEncoded() throws NoSuchAlgorithmException, IOException
{
    if (this.encoded != null)
        return this.encoded.clone();

    DerOutputStream out = new DerOutputStream();
    DerOutputStream tmp = new DerOutputStream();

    DerOutputStream tmp2 = new DerOutputStream();
    // encode encryption algorithm
    AlgorithmId algid = AlgorithmId.get(digestAlgorithmName);
    algid.encode(tmp2);

    // encode digest data
    tmp2.putOctetString(digest);

    tmp.write(DerValue.tag_Sequence, tmp2);

    // encode salt
    tmp.putOctetString(macSalt);

    // encode iterations
    tmp.putInteger(iterations);

    // wrap everything into a SEQUENCE
    out.write(DerValue.tag_Sequence, tmp);
    this.encoded = out.toByteArray();

    return this.encoded.clone();
}
 

import sun.security.x509.AlgorithmId; //导入方法依赖的package包/类
/**
 * Create the signed certificate request.  This will later be
 * retrieved in either string or binary format.
 *
 * @param subject identifies the signer (by X.500 name).
 * @param signature private key and signing algorithm to use.
 * @exception IOException on errors.
 * @exception CertificateException on certificate handling errors.
 * @exception SignatureException on signature handling errors.
 */
public void encodeAndSign(X500Name subject, Signature signature)
throws CertificateException, IOException, SignatureException {
    DerOutputStream out, scratch;
    byte[]          certificateRequestInfo;
    byte[]          sig;

    if (encoded != null)
        throw new SignatureException("request is already signed");

    this.subject = subject;

    /*
     * Encode cert request info, wrap in a sequence for signing
     */
    scratch = new DerOutputStream();
    scratch.putInteger(BigInteger.ZERO);            // PKCS #10 v1.0
    subject.encode(scratch);                        // X.500 name
    scratch.write(subjectPublicKeyInfo.getEncoded()); // public key
    attributeSet.encode(scratch);

    out = new DerOutputStream();
    out.write(DerValue.tag_Sequence, scratch);      // wrap it!
    certificateRequestInfo = out.toByteArray();
    scratch = out;

    /*
     * Sign it ...
     */
    signature.update(certificateRequestInfo, 0,
            certificateRequestInfo.length);
    sig = signature.sign();
    sigAlg = signature.getAlgorithm();

    /*
     * Build guts of SIGNED macro
     */
    AlgorithmId algId = null;
    try {
        algId = AlgorithmId.get(signature.getAlgorithm());
    } catch (NoSuchAlgorithmException nsae) {
        throw new SignatureException(nsae);
    }
    algId.encode(scratch);     // sig algorithm
    scratch.putBitString(sig);                      // sig

    /*
     * Wrap those guts in a sequence
     */
    out = new DerOutputStream();
    out.write(DerValue.tag_Sequence, scratch);
    encoded = out.toByteArray();
}
 

import sun.security.x509.AlgorithmId; //导入方法依赖的package包/类
private byte[] encryptContent(byte[] data, char[] password)
    throws IOException {

    byte[] encryptedData = null;

    // create AlgorithmParameters
    AlgorithmParameters algParams =
            getAlgorithmParameters("PBEWithSHA1AndRC2_40");
    DerOutputStream bytes = new DerOutputStream();
    AlgorithmId algId =
            new AlgorithmId(pbeWithSHAAnd40BitRC2CBC_OID, algParams);
    algId.encode(bytes);
    byte[] encodedAlgId = bytes.toByteArray();

    try {
        // Use JCE
        SecretKey skey = getPBEKey(password);
        Cipher cipher = Cipher.getInstance("PBEWithSHA1AndRC2_40");
        cipher.init(Cipher.ENCRYPT_MODE, skey, algParams);
        encryptedData = cipher.doFinal(data);

        if (debug != null) {
            debug.println("  (Cipher algorithm: " + cipher.getAlgorithm() +
                ")");
        }

    } catch (Exception e) {
        throw new IOException("Failed to encrypt" +
                " safe contents entry: " + e, e);
    }

    // create EncryptedContentInfo
    DerOutputStream bytes2 = new DerOutputStream();
    bytes2.putOID(ContentInfo.DATA_OID);
    bytes2.write(encodedAlgId);

    // Wrap encrypted data in a context-specific tag.
    DerOutputStream tmpout2 = new DerOutputStream();
    tmpout2.putOctetString(encryptedData);
    bytes2.writeImplicit(DerValue.createTag(DerValue.TAG_CONTEXT,
                                    false, (byte)0), tmpout2);

    // wrap EncryptedContentInfo in a Sequence
    DerOutputStream out = new DerOutputStream();
    out.write(DerValue.tag_Sequence, bytes2);
    return out.toByteArray();
}