Code example for InvalidKeySpecException

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                    primeQ == null ? null : primeQ.toByteArray(),
                    primeExponentP == null ? null : primeExponentP.toByteArray(),
                    primeExponentQ == null ? null : primeExponentQ.toByteArray(),
                    crtCoefficient == null ? null : crtCoefficient.toByteArray()));
        } catch (Exception e) {
            throw new InvalidKeySpecException(e);
        } 
    } 
 
    static OpenSSLKey getInstance(RSAPrivateCrtKey rsaPrivateKey) throws InvalidKeyException {
        BigInteger modulus = rsaPrivateKey.getModulus();
        BigInteger privateExponent = rsaPrivateKey.getPrivateExponent();
 
        if (modulus == null) {
            throw new InvalidKeyException("modulus == null");
        } else if (privateExponent == null) {
            throw new InvalidKeyException("privateExponent == null");
        } 
 
        try { 
            /*