public boolean estCleValable(String k) {
		String[] keys=k.split(" ");
		if(keys.length==2 && keys[0]!="" && keys[1]!="") {
			if(this.estClePubliqueValable(keys[0]) && this.estClePriveValable(keys[1])) {
				return true;
			}
			else {
				return false;
			}
		}
		else {
			return false;
		}
	}