Java AlgorithmId.getName方法代码示例

import sun.security.x509.AlgorithmId; //导入方法依赖的package包/类
/**
 * Check the signature algorithm with the specified public key.
 *
 * @param key the public key to verify the CRL signature
 * @param crl the target CRL
 */
static void check(PublicKey key, AlgorithmId algorithmId)
                    throws CertPathValidatorException {
    String sigAlgName = algorithmId.getName();
    AlgorithmParameters sigAlgParams = algorithmId.getParameters();

    if (!certPathDefaultConstraints.permits(
            SIGNATURE_PRIMITIVE_SET, sigAlgName, key, sigAlgParams)) {
        throw new CertPathValidatorException(
            "algorithm check failed: " + sigAlgName + " is disabled",
            null, null, -1, BasicReason.ALGORITHM_CONSTRAINED);
    }
}
 

import sun.security.x509.AlgorithmId; //导入方法依赖的package包/类
/**
 * Parses a PKCS#12 MAC data.
 */
MacData(DerInputStream derin)
    throws IOException, ParsingException
{
    DerValue[] macData = derin.getSequence(2);

    // Parse the digest info
    DerInputStream digestIn = new DerInputStream(macData[0].toByteArray());
    DerValue[] digestInfo = digestIn.getSequence(2);

    // Parse the DigestAlgorithmIdentifier.
    AlgorithmId digestAlgorithmId = AlgorithmId.parse(digestInfo[0]);
    this.digestAlgorithmName = digestAlgorithmId.getName();
    this.digestAlgorithmParams = digestAlgorithmId.getParameters();
    // Get the digest.
    this.digest = digestInfo[1].getOctetString();

    // Get the salt.
    this.macSalt = macData[1].getOctetString();

    // Iterations is optional. The default value is 1.
    if (macData.length > 2) {
        this.iterations = macData[2].getInteger();
    } else {
        this.iterations = 1;
    }
}
 

import sun.security.x509.AlgorithmId; //导入方法依赖的package包/类
/**
 * Check the signature algorithm with the specified public key.
 *
 * @param key the public key to verify the CRL signature
 * @param crl the target CRL
 */
static void check(PublicKey key, AlgorithmId algorithmId)
                    throws CertPathValidatorException {
    String sigAlgName = algorithmId.getName();
    AlgorithmParameters sigAlgParams = algorithmId.getParameters();

    if (!certPathDefaultConstraints.permits(
            SIGNATURE_PRIMITIVE_SET, sigAlgName, key, sigAlgParams)) {
        throw new CertPathValidatorException(
            "Algorithm constraints check failed on signature algorithm: " +
            sigAlgName + " is disabled",
            null, null, -1, BasicReason.ALGORITHM_CONSTRAINED);
    }
}
 

import sun.security.x509.AlgorithmId; //导入方法依赖的package包/类
/**
 * Parses an encoded, signed PKCS #10 certificate request, verifying
 * the request's signature as it does so.  This constructor would
 * typically be used by a Certificate Authority, from which a new
 * certificate would then be constructed.
 *
 * @param data the DER-encoded PKCS #10 request.
 * @exception IOException for low level errors reading the data
 * @exception SignatureException when the signature is invalid
 * @exception NoSuchAlgorithmException when the signature
 *  algorithm is not supported in this environment
 */
public PKCS10(byte[] data)
throws IOException, SignatureException, NoSuchAlgorithmException {
    DerInputStream  in;
    DerValue[]      seq;
    AlgorithmId     id;
    byte[]          sigData;
    Signature       sig;

    encoded = data;

    //
    // Outer sequence:  request, signature algorithm, signature.
    // Parse, and prepare to verify later.
    //
    in = new DerInputStream(data);
    seq = in.getSequence(3);

    if (seq.length != 3)
        throw new IllegalArgumentException("not a PKCS #10 request");

    data = seq[0].toByteArray();            // reusing this variable
    id = AlgorithmId.parse(seq[1]);
    sigData = seq[2].getBitString();

    //
    // Inner sequence:  version, name, key, attributes
    //
    BigInteger      serial;
    DerValue        val;

    serial = seq[0].data.getBigInteger();
    if (!serial.equals(BigInteger.ZERO))
        throw new IllegalArgumentException("not PKCS #10 v1");

    subject = new X500Name(seq[0].data);
    subjectPublicKeyInfo = X509Key.parse(seq[0].data.getDerValue());

    // Cope with a somewhat common illegal PKCS #10 format
    if (seq[0].data.available() != 0)
        attributeSet = new PKCS10Attributes(seq[0].data);
    else
        attributeSet = new PKCS10Attributes();

    if (seq[0].data.available() != 0)
        throw new IllegalArgumentException("illegal PKCS #10 data");

    //
    // OK, we parsed it all ... validate the signature using the
    // key and signature algorithm we found.
    //
    try {
        sigAlg = id.getName();
        sig = Signature.getInstance(sigAlg);
        sig.initVerify(subjectPublicKeyInfo);
        sig.update(data);
        if (!sig.verify(sigData))
            throw new SignatureException("Invalid PKCS #10 signature");
    } catch (InvalidKeyException e) {
        throw new SignatureException("invalid key");
    }
}
 

import sun.security.x509.AlgorithmId; //导入方法依赖的package包/类
/**
 * Check the signature algorithm with the specified public key.
 *
 * @param key the public key to verify the CRL signature
 * @param algorithmId signature algorithm Algorithm ID
 * @param variant is the Validator variants of the operation. A null value
 *                passed will set it to Validator.GENERIC.
 */
static void check(PublicKey key, AlgorithmId algorithmId, String variant)
                    throws CertPathValidatorException {
    String sigAlgName = algorithmId.getName();
    AlgorithmParameters sigAlgParams = algorithmId.getParameters();

    certPathDefaultConstraints.permits(new ConstraintsParameters(
            sigAlgName, sigAlgParams, key, variant));
}