//Подписание файла PDF
public signCreated(certSubjectName: string, file: any): void {

    let encodeString: string = Base64.encode(file);
    this.crypto.then(
        () => {
            this.crypto.signature(certSubjectName, file)
                .then(
                (res: any) => {
                    this.PDFBase64String = res;
                    console.log(this.PDFBase64String);
                }
                , (error) => {
                    console.error(error);
                });
        }
        , (error) => {
            console.error(error);
        });
}
//загрузка файла в переменную
private fileChangeEvent(fileInput: any) {

    this.file.file = <File>fileInput.target.files[0];
    this.file.description = fileInput.target.files[0].name;
    this.file.metaObjectId = -1;
    this.file.objectId = -1;

    let selectedFile = fileInput.target.files;
    if (selectedFile.length > 0) {
        let fileToLoad = selectedFile[0];
        let myReader: FileReader = new FileReader();
        myReader.onloadend = (e) => {
            this.file.file = myReader.result;
            console.log(this.file);
        };
        myReader.readAsDataURL(fileToLoad);
    }

}
//Формирование файла подписи в формате CMS
private onClickDownloadPDF() {
    let b64Data = this.srvCerts.PDFBase64String;
    if (b64Data) {
        let contentType = 'application/pkcs7-signature';

        let byteCharacters = window.atob(b64Data);

        let byteNumbers = new Array(b64Data.length);

        for (var i = 0; i < byteCharacters.length; i++)
            byteNumbers[i] = byteCharacters.charCodeAt(i);

        let byteArray = new Uint8Array(byteNumbers);

        let blob = new Blob([byteArray], { type: contentType });
        console.log(blob.size);

        let url = window.URL.createObjectURL(blob);

        if (window.navigator.msSaveBlob) {
            window.navigator.msSaveOrOpenBlob(blob, this.file.description + ".p7s");
        } else {
            var link = document.createElement('a');
            link.href = window.URL.createObjectURL(blob);
            link.setAttribute('download', this.file.description + ".p7s");
            document.body.appendChild(link);
            link.click();
            document.body.removeChild(link);
        }
    }
}