*-------------------------------------------------------------------
 */
int CipherInfo(Tcl_Interp *interp, Tcl_Obj *nameObj) {
    const EVP_CIPHER *cipher;
    Tcl_Obj *resultObj, *listObj;
    unsigned long flags, mode;
    char *modeName = NULL;
    char *name = Tcl_GetStringFromObj(nameObj, (Tcl_Size *) NULL);

    /* Get cipher */
    cipher = EVP_get_cipherbyname(name);

    if (cipher == NULL) {
	Tcl_AppendResult(interp, "Invalid cipher \"", name, "\"", (char *) NULL);
	return TCL_ERROR;

 *
 *-------------------------------------------------------------------
 */
int DigestInfo(Tcl_Interp *interp, Tcl_Obj *nameObj) {
    const EVP_MD *md;
    Tcl_Obj *resultObj, *listObj;
    unsigned long flags;
    char *name = Tcl_GetStringFromObj(nameObj, (Tcl_Size *) NULL);

    /* Get message digest */
    md = EVP_get_digestbyname(name);

    if (md == NULL) {
	Tcl_AppendResult(interp, "Invalid digest \"", name, "\"", (char *) NULL);
	return TCL_ERROR;

 *	None.
 *
 *-------------------------------------------------------------------
 */
int MacInfo(Tcl_Interp *interp, Tcl_Obj *nameObj) {
    Tcl_Obj *resultObj;
    int res = TCL_OK;
    char *name = Tcl_GetStringFromObj(nameObj, (Tcl_Size *) NULL);

    if (strcmp(name, "cmac") != 0 && strcmp(name, "hmac") != 0) {
	Tcl_AppendResult(interp, "Invalid MAC \"", name, "\"", (char *) NULL);
	return TCL_ERROR;
    }

    /* Get properties */

 *	None.
 *
 *-------------------------------------------------------------------
 */
int PkeyInfo(Tcl_Interp *interp, Tcl_Obj *nameObj) {
    Tcl_Obj *resultObj;
    int res = TCL_OK;
    char *name = Tcl_GetStringFromObj(nameObj, (Tcl_Size *) NULL);
    EVP_PKEY *pkey = NULL;

    if (pkey == NULL) {
	Tcl_AppendResult(interp, "Invalid public key method \"", name, "\"", (char *) NULL);
	return TCL_ERROR;
    }

    /* Validate arg count */
    if (objc != 2) {
	Tcl_WrongNumArgs(interp, 1, objv, "name");
	return TCL_ERROR;
    }

    name = Tcl_GetStringFromObj(objv[1], NULL);
    if (!OSSL_PROVIDER_try_load(NULL, (const char *) name, 1)) {
	Tcl_AppendResult(interp, GET_ERR_REASON(), (char *) NULL);
	return TCL_ERROR;
    }

    return TCL_OK;
}