f(newVal == 'PKCS12'){
                    this.convert_to = ['PEM','JKS'];
                }else if(newVal == 'JKS'){
                    this.convert_to = ['PEM','PKCS12'];
                }else if(newVal == 'DER'){
                    this.convert_to = ['PEM'];
                }else if(newVal == 'PKCS7'){
                    this.convert_to = ['PEM'];
                }else{
                    this.convert_to = [];
                }
                this.input.to = ''
            }
        },