src/main/java/org/apache/commons/crypto/jna/OpenSsl10XNativeJna.java [31:95]:
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    static final boolean INIT_OK;

    static final Throwable INIT_ERROR;

    static {
        boolean ok = false;
        Throwable thrown = null;
        try {
            final String libName = System.getProperty(Crypto.CONF_PREFIX + OpenSslNativeJna.class.getSimpleName(), "crypto");
            OpenSslJna.debug("Native.register('%s')", libName);
            Native.register(libName);
            ok = true;
        } catch (final Exception | UnsatisfiedLinkError e) {
            thrown = e;
        } finally {
            INIT_OK = ok;
            INIT_ERROR = thrown;
        }
    }

    // Try to keep methods aligned across versions

    /**
     * Gets engine by id
     *
     * @param id
     *            engine id
     * @return engine instance
     */
    public static native PointerByReference ENGINE_by_id(String id);

    /**
     * Cleanups before program exit, it will avoid memory leaks.
     *
     * @return 0 on success, 1 otherwise.
     */
    public static native int ENGINE_cleanup();

    /**
     * Releases all functional references.
     *
     * @param e
     *            engine reference.
     * @return 0 on success, 1 otherwise.
     */
    public static native int ENGINE_finish(PointerByReference e);

    /**
     * Frees the structural reference
     *
     * @param e
     *            engine reference.
     * @return 0 on success, 1 otherwise.
     */
    public static native int ENGINE_free(PointerByReference e);

    /**
     * Obtains a functional reference from an existing structural reference.
     *
     * @param e
     *            engine reference
     * @return zero if the ENGINE was not already operational and couldn't be successfully
     *         initialized
     */
    public static native int ENGINE_init(PointerByReference e);
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src/main/java/org/apache/commons/crypto/jna/OpenSsl20XNativeJna.java [31:95]:
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    static final boolean INIT_OK;

    static final Throwable INIT_ERROR;

    static {
        boolean ok = false;
        Throwable thrown = null;
        try {
            final String libName = System.getProperty(Crypto.CONF_PREFIX + OpenSslNativeJna.class.getSimpleName(), "crypto");
            OpenSslJna.debug("Native.register('%s')", libName);
            Native.register(libName);
            ok = true;
        } catch (final Exception | UnsatisfiedLinkError e) {
            thrown = e;
        } finally {
            INIT_OK = ok;
            INIT_ERROR = thrown;
        }
    }

    // Try to keep methods aligned across versions

    /**
     * Gets engine by id.
     *
     * @param id
     *            engine id.
     * @return engine instance
     */
    public static native PointerByReference ENGINE_by_id(String id);

    /**
     * Cleanups before program exit, it will avoid memory leaks.
     *
     * @return 0 on success, 1 otherwise.
     */
    public static native int ENGINE_cleanup();

    /**
     * Releases all functional references.
     *
     * @param e
     *            engine reference.
     * @return 0 on success, 1 otherwise.
     */
    public static native int ENGINE_finish(PointerByReference e);

    /**
     * Frees the structural reference
     *
     * @param e
     *            engine reference.
     * @return 0 on success, 1 otherwise.
     */
    public static native int ENGINE_free(PointerByReference e);

    /**
     * Obtains a functional reference from an existing structural reference.
     *
     * @param e
     *            engine reference
     * @return zero if the ENGINE was not already operational and couldn't be successfully
     *         initialized
     */
    public static native int ENGINE_init(PointerByReference e);
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