Examples with DSAParams java.security.interfaces.DSAParams used on opensource projects

Example 36 with DSAParams

use of java.security.interfaces.DSAParams in project XobotOS by xamarin.

the class SHA1withDSA_SignatureImpl method engineInitVerify.

/**
     * Initializes this signature object with PublicKey object
     * passed as argument to the method.
     *
     * @params
     *    publicKey DSAPublicKey object
     * @throws
     *    InvalidKeyException if publicKey is not DSAPublicKey object
     */
protected void engineInitVerify(PublicKey publicKey) throws InvalidKeyException {
    // parameters and public key
    BigInteger p, q, y;
    int n1;
    if (publicKey == null || !(publicKey instanceof DSAPublicKey)) {
        throw new InvalidKeyException("publicKey is not an instance of DSAPublicKey");
    }
    DSAParams params = ((DSAPublicKey) publicKey).getParams();
    p = params.getP();
    q = params.getQ();
    y = ((DSAPublicKey) publicKey).getY();
    // checks described in DSA standard
    n1 = p.bitLength();
    if (p.compareTo(BigInteger.valueOf(1)) != 1 || n1 < 512 || n1 > 1024 || (n1 & 077) != 0) {
        throw new InvalidKeyException("bad p");
    }
    if (q.signum() != 1 || q.bitLength() != 160) {
        throw new InvalidKeyException("bad q");
    }
    if (y.signum() != 1) {
        throw new InvalidKeyException("y <= 0");
    }
    dsaKey = (DSAKey) publicKey;
    msgDigest.reset();
}

Example 37 with DSAParams

use of java.security.interfaces.DSAParams in project XobotOS by xamarin.

the class SHA1withDSA_SignatureImpl method engineInitSign.

/**
     * Initializes this signature object with PrivateKey object
     * passed as argument to the method.
     *
     * @params
     *    privateKey DSAPrivateKey object
     * @throws
     *    InvalidKeyException if privateKey is not DSAPrivateKey object
     */
protected void engineInitSign(PrivateKey privateKey) throws InvalidKeyException {
    DSAParams params;
    // parameters and private key
    BigInteger p, q, x;
    int n;
    if (privateKey == null || !(privateKey instanceof DSAPrivateKey)) {
        throw new InvalidKeyException();
    }
    params = ((DSAPrivateKey) privateKey).getParams();
    p = params.getP();
    q = params.getQ();
    x = ((DSAPrivateKey) privateKey).getX();
    // checks described in DSA standard
    n = p.bitLength();
    if (p.compareTo(BigInteger.valueOf(1)) != 1 || n < 512 || n > 1024 || (n & 077) != 0) {
        throw new InvalidKeyException("bad p");
    }
    if (q.signum() != 1 && q.bitLength() != 160) {
        throw new InvalidKeyException("bad q");
    }
    if (x.signum() != 1 || x.compareTo(q) != -1) {
        throw new InvalidKeyException("x <= 0 || x >= q");
    }
    dsaKey = (DSAKey) privateKey;
    msgDigest.reset();
}

Example 38 with DSAParams

use of java.security.interfaces.DSAParams in project XobotOS by xamarin.

the class OpenSSLSignature method engineInitVerify.

@Override
protected void engineInitVerify(PublicKey publicKey) throws InvalidKeyException {
    if (publicKey instanceof DSAPublicKey) {
        try {
            DSAPublicKey dsaPublicKey = (DSAPublicKey) publicKey;
            DSAParams dsaParams = dsaPublicKey.getParams();
            dsa = NativeCrypto.EVP_PKEY_new_DSA(dsaParams.getP().toByteArray(), dsaParams.getQ().toByteArray(), dsaParams.getG().toByteArray(), dsaPublicKey.getY().toByteArray(), null);
        } catch (Exception e) {
            throw new InvalidKeyException(e);
        }
    } else if (publicKey instanceof RSAPublicKey) {
        try {
            RSAPublicKey rsaPublicKey = (RSAPublicKey) publicKey;
            rsa = NativeCrypto.EVP_PKEY_new_RSA(rsaPublicKey.getModulus().toByteArray(), rsaPublicKey.getPublicExponent().toByteArray(), null, null, null);
        } catch (Exception e) {
            throw new InvalidKeyException(e);
        }
    } else {
        throw new InvalidKeyException("Need DSA or RSA public key");
    }
    try {
        ctx = NativeCrypto.EVP_VerifyInit(evpAlgorithm);
    } catch (Exception ex) {
        throw new RuntimeException(ex);
    }
}

Example 39 with DSAParams

use of java.security.interfaces.DSAParams in project jdk8u_jdk by JetBrains.

the class AlgorithmChecker method check.

@Override
public void check(Certificate cert, Collection<String> unresolvedCritExts) throws CertPathValidatorException {
    if (!(cert instanceof X509Certificate) || constraints == null) {
        // ignore the check for non-x.509 certificate or null constraints
        return;
    }
    // check the key usage and key size
    boolean[] keyUsage = ((X509Certificate) cert).getKeyUsage();
    if (keyUsage != null && keyUsage.length < 9) {
        throw new CertPathValidatorException("incorrect KeyUsage extension", null, null, -1, PKIXReason.INVALID_KEY_USAGE);
    }
    X509CertImpl x509Cert;
    AlgorithmId algorithmId;
    try {
        x509Cert = X509CertImpl.toImpl((X509Certificate) cert);
        algorithmId = (AlgorithmId) x509Cert.get(X509CertImpl.SIG_ALG);
    } catch (CertificateException ce) {
        throw new CertPathValidatorException(ce);
    }
    AlgorithmParameters currSigAlgParams = algorithmId.getParameters();
    PublicKey currPubKey = cert.getPublicKey();
    String currSigAlg = ((X509Certificate) cert).getSigAlgName();
    // Check the signature algorithm and parameters against constraints.
    if (!constraints.permits(SIGNATURE_PRIMITIVE_SET, currSigAlg, currSigAlgParams)) {
        throw new CertPathValidatorException("Algorithm constraints check failed on signature " + "algorithm: " + currSigAlg, null, null, -1, BasicReason.ALGORITHM_CONSTRAINED);
    }
    // Assume all key usage bits are set if key usage is not present
    Set<CryptoPrimitive> primitives = KU_PRIMITIVE_SET;
    if (keyUsage != null) {
        primitives = EnumSet.noneOf(CryptoPrimitive.class);
        if (keyUsage[0] || keyUsage[1] || keyUsage[5] || keyUsage[6]) {
            // keyUsage[0]: KeyUsage.digitalSignature
            // keyUsage[1]: KeyUsage.nonRepudiation
            // keyUsage[5]: KeyUsage.keyCertSign
            // keyUsage[6]: KeyUsage.cRLSign
            primitives.add(CryptoPrimitive.SIGNATURE);
        }
        if (keyUsage[2]) {
            // KeyUsage.keyEncipherment
            primitives.add(CryptoPrimitive.KEY_ENCAPSULATION);
        }
        if (keyUsage[3]) {
            // KeyUsage.dataEncipherment
            primitives.add(CryptoPrimitive.PUBLIC_KEY_ENCRYPTION);
        }
        if (keyUsage[4]) {
            // KeyUsage.keyAgreement
            primitives.add(CryptoPrimitive.KEY_AGREEMENT);
        }
        if (primitives.isEmpty()) {
            throw new CertPathValidatorException("incorrect KeyUsage extension bits", null, null, -1, PKIXReason.INVALID_KEY_USAGE);
        }
    }
    ConstraintsParameters cp = new ConstraintsParameters((X509Certificate) cert, trustedMatch, pkixdate, jarTimestamp, variant);
    // Check against local constraints if it is DisabledAlgorithmConstraints
    if (constraints instanceof DisabledAlgorithmConstraints) {
        ((DisabledAlgorithmConstraints) constraints).permits(currSigAlg, cp);
    // DisabledAlgorithmsConstraints does not check primitives, so key
    // additional key check.
    } else {
        // Perform the default constraints checking anyway.
        certPathDefaultConstraints.permits(currSigAlg, cp);
        // Call locally set constraints to check key with primitives.
        if (!constraints.permits(primitives, currPubKey)) {
            throw new CertPathValidatorException("Algorithm constraints check failed on key " + currPubKey.getAlgorithm() + " with size of " + sun.security.util.KeyUtil.getKeySize(currPubKey) + "bits", null, null, -1, BasicReason.ALGORITHM_CONSTRAINED);
        }
    }
    // If there is no previous key, set one and exit
    if (prevPubKey == null) {
        prevPubKey = currPubKey;
        return;
    }
    // Check with previous cert for signature algorithm and public key
    if (!constraints.permits(SIGNATURE_PRIMITIVE_SET, currSigAlg, prevPubKey, currSigAlgParams)) {
        throw new CertPathValidatorException("Algorithm constraints check failed on " + "signature algorithm: " + currSigAlg, null, null, -1, BasicReason.ALGORITHM_CONSTRAINED);
    }
    // Inherit key parameters from previous key
    if (PKIX.isDSAPublicKeyWithoutParams(currPubKey)) {
        // Inherit DSA parameters from previous key
        if (!(prevPubKey instanceof DSAPublicKey)) {
            throw new CertPathValidatorException("Input key is not " + "of a appropriate type for inheriting parameters");
        }
        DSAParams params = ((DSAPublicKey) prevPubKey).getParams();
        if (params == null) {
            throw new CertPathValidatorException("Key parameters missing from public key.");
        }
        try {
            BigInteger y = ((DSAPublicKey) currPubKey).getY();
            KeyFactory kf = KeyFactory.getInstance("DSA");
            DSAPublicKeySpec ks = new DSAPublicKeySpec(y, params.getP(), params.getQ(), params.getG());
            currPubKey = kf.generatePublic(ks);
        } catch (GeneralSecurityException e) {
            throw new CertPathValidatorException("Unable to generate " + "key with inherited parameters: " + e.getMessage(), e);
        }
    }
    // reset the previous public key
    prevPubKey = currPubKey;
}

Example 40 with DSAParams

use of java.security.interfaces.DSAParams in project jdk8u_jdk by JetBrains.

the class BasicChecker method makeInheritedParamsKey.

/**
     * Internal method to create a new key with inherited key parameters.
     *
     * @param keyValueKey key from which to obtain key value
     * @param keyParamsKey key from which to obtain key parameters
     * @return new public key having value and parameters
     * @throws CertPathValidatorException if keys are not appropriate types
     * for this operation
     */
static PublicKey makeInheritedParamsKey(PublicKey keyValueKey, PublicKey keyParamsKey) throws CertPathValidatorException {
    if (!(keyValueKey instanceof DSAPublicKey) || !(keyParamsKey instanceof DSAPublicKey))
        throw new CertPathValidatorException("Input key is not " + "appropriate type for " + "inheriting parameters");
    DSAParams params = ((DSAPublicKey) keyParamsKey).getParams();
    if (params == null)
        throw new CertPathValidatorException("Key parameters missing");
    try {
        BigInteger y = ((DSAPublicKey) keyValueKey).getY();
        KeyFactory kf = KeyFactory.getInstance("DSA");
        DSAPublicKeySpec ks = new DSAPublicKeySpec(y, params.getP(), params.getQ(), params.getG());
        return kf.generatePublic(ks);
    } catch (GeneralSecurityException e) {
        throw new CertPathValidatorException("Unable to generate key with" + " inherited parameters: " + e.getMessage(), e);
    }
}