sshd-common/src/main/java/org/apache/sshd/common/config/keys/impl/RSAPublicKeyDecoder.java [88:127]:
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    @Override
    public RSAPublicKey clonePublicKey(RSAPublicKey key) throws GeneralSecurityException {
        if (key == null) {
            return null;
        } else {
            return generatePublicKey(new RSAPublicKeySpec(key.getModulus(), key.getPublicExponent()));
        }
    }

    @Override
    public RSAPrivateKey clonePrivateKey(RSAPrivateKey key) throws GeneralSecurityException {
        if (key == null) {
            return null;
        }

        if (!(key instanceof RSAPrivateCrtKey)) {
            throw new InvalidKeyException("Cannot clone a non-RSAPrivateCrtKey: " + key.getClass().getSimpleName());
        }

        RSAPrivateCrtKey rsaPrv = (RSAPrivateCrtKey) key;
        return generatePrivateKey(
                new RSAPrivateCrtKeySpec(
                        rsaPrv.getModulus(),
                        rsaPrv.getPublicExponent(),
                        rsaPrv.getPrivateExponent(),
                        rsaPrv.getPrimeP(),
                        rsaPrv.getPrimeQ(),
                        rsaPrv.getPrimeExponentP(),
                        rsaPrv.getPrimeExponentQ(),
                        rsaPrv.getCrtCoefficient()));
    }

    @Override
    public KeyPairGenerator getKeyPairGenerator() throws GeneralSecurityException {
        return SecurityUtils.getKeyPairGenerator(KeyUtils.RSA_ALGORITHM);
    }

    @Override
    public KeyFactory getKeyFactoryInstance() throws GeneralSecurityException {
        return SecurityUtils.getKeyFactory(KeyUtils.RSA_ALGORITHM);
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sshd-common/src/main/java/org/apache/sshd/common/config/keys/loader/openssh/OpenSSHRSAPrivateKeyDecoder.java [113:152]:
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    @Override
    public RSAPublicKey clonePublicKey(RSAPublicKey key) throws GeneralSecurityException {
        if (key == null) {
            return null;
        } else {
            return generatePublicKey(new RSAPublicKeySpec(key.getModulus(), key.getPublicExponent()));
        }
    }

    @Override
    public RSAPrivateKey clonePrivateKey(RSAPrivateKey key) throws GeneralSecurityException {
        if (key == null) {
            return null;
        }

        if (!(key instanceof RSAPrivateCrtKey)) {
            throw new InvalidKeyException("Cannot clone a non-RSAPrivateCrtKey: " + key.getClass().getSimpleName());
        }

        RSAPrivateCrtKey rsaPrv = (RSAPrivateCrtKey) key;
        return generatePrivateKey(
                new RSAPrivateCrtKeySpec(
                        rsaPrv.getModulus(),
                        rsaPrv.getPublicExponent(),
                        rsaPrv.getPrivateExponent(),
                        rsaPrv.getPrimeP(),
                        rsaPrv.getPrimeQ(),
                        rsaPrv.getPrimeExponentP(),
                        rsaPrv.getPrimeExponentQ(),
                        rsaPrv.getCrtCoefficient()));
    }

    @Override
    public KeyPairGenerator getKeyPairGenerator() throws GeneralSecurityException {
        return SecurityUtils.getKeyPairGenerator(KeyUtils.RSA_ALGORITHM);
    }

    @Override
    public KeyFactory getKeyFactoryInstance() throws GeneralSecurityException {
        return SecurityUtils.getKeyFactory(KeyUtils.RSA_ALGORITHM);
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