{"id":74144,"date":"2023-06-23T17:06:14","date_gmt":"2023-06-23T15:06:14","guid":{"rendered":"https:\/\/krm.swiss\/art-9-gebuev-timestamps-and-dcf-77\/"},"modified":"2023-06-23T17:06:14","modified_gmt":"2023-06-23T15:06:14","slug":"art-9-gebuev-timestamps-and-dcf-77","status":"publish","type":"post","link":"https:\/\/krm.swiss\/en\/art-9-gebuev-timestamps-and-dcf-77\/","title":{"rendered":"Art. 9 GeB\u00fcV, Timestamps and DCF 77"},"content":{"rendered":"

Bad news for operators of systems which use the DCF 77 signal for time stamping. According to Art. 9, the following requirements apply when working with changeable memories:<\/p>\n

Art. 9 <\/strong>Permissible information carriers<\/em><\/span><\/p>\n

1 For the retention of records are permissible:<\/em><\/span><\/p>\n

    \n
  1. ..<\/em><\/span><\/li>\n
  2. changeable information carriers, if:<\/em><\/span><\/li>\n<\/ol>\n

    technical procedures are used which guarantee the integrity of the stored information (e.g. digital signature procedures),<\/em><\/span><\/p>\n

    the time at which the information is stored is verifiable in an unforgeable manner<\/strong> (e.g. by “time stamp”)<\/strong><\/em><\/span><\/p>\n

    These requirements are to be understood cumulatively. The timestamp is enormously important, because it can be used to prevent data from being subsequently changed and saved with an old date. Fulfilling this requirement is almost only possible if the timestamp comes from a trusted source (e.g. Time Stamping Provider). Consequently, this means that the time itself must come from a trusted source, which the provider or the client uses to create the timestamp. In many cases, the DCF77 signal is used for this purpose. Unfortunately, it now appears that this source can be duped by simple means. The technical article by Compass employee Reto Schaedler shows how this attack works<\/span>.<\/p>\n\n\n\n
    <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

    Bad news for operators of systems which use the DCF 77 signal for time stamping. According to Art. 9, the following requirements apply when working with changeable memories: Art. 9 Permissible information carriers 1 For the retention of records are permissible: .. changeable information carriers, if: technical procedures are used which guarantee the integrity of […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[360,350],"tags":[375,358],"dipi_cpt_category":[],"class_list":["post-74144","post","type-post","status-publish","format-standard","hentry","category-ecm-dms-and-content-services","category-records-management-archiving","tag-gebuev-en","tag-integrity-protection"],"yoast_head":"\nArt. 9 GeB\u00fcV, Timestamps and DCF 77 - krm Information Governance<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/krm.swiss\/en\/art-9-gebuev-timestamps-and-dcf-77\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Art. 9 GeB\u00fcV, Timestamps and DCF 77 - krm Information Governance\" \/>\n<meta property=\"og:description\" content=\"Bad news for operators of systems which use the DCF 77 signal for time stamping. According to Art. 9, the following requirements apply when working with changeable memories: Art. 9 Permissible information carriers 1 For the retention of records are permissible: .. changeable information carriers, if: technical procedures are used which guarantee the integrity of […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/krm.swiss\/en\/art-9-gebuev-timestamps-and-dcf-77\/\" \/>\n<meta property=\"og:site_name\" content=\"krm Information Governance\" \/>\n<meta property=\"article:published_time\" content=\"2023-06-23T15:06:14+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/krm.swiss\/wp\/wp-content\/uploads\/2023\/01\/joshua-sortino-LqKhnDzSF-8-unsplash-1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1500\" \/>\n\t<meta property=\"og:image:height\" content=\"844\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Bruno Wildhaber\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Bruno Wildhaber\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/krm.swiss\\\/en\\\/art-9-gebuev-timestamps-and-dcf-77\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/krm.swiss\\\/en\\\/art-9-gebuev-timestamps-and-dcf-77\\\/\"},\"author\":{\"name\":\"Bruno Wildhaber\",\"@id\":\"https:\\\/\\\/krm.swiss\\\/en\\\/#\\\/schema\\\/person\\\/6af1b03b3936809e3ff9bd196f609cce\"},\"headline\":\"Art. 9 GeB\u00fcV, Timestamps and DCF 77\",\"datePublished\":\"2023-06-23T15:06:14+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/krm.swiss\\\/en\\\/art-9-gebuev-timestamps-and-dcf-77\\\/\"},\"wordCount\":194,\"commentCount\":0,\"keywords\":[\"GeB\u00fcV\",\"Integrity protection\"],\"articleSection\":[\"ECM, DMS and Content Services\",\"Records Management & Archiving\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/krm.swiss\\\/en\\\/art-9-gebuev-timestamps-and-dcf-77\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/krm.swiss\\\/en\\\/art-9-gebuev-timestamps-and-dcf-77\\\/\",\"url\":\"https:\\\/\\\/krm.swiss\\\/en\\\/art-9-gebuev-timestamps-and-dcf-77\\\/\",\"name\":\"Art. 9 GeB\u00fcV, Timestamps and DCF 77 - krm Information Governance\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/krm.swiss\\\/en\\\/#website\"},\"datePublished\":\"2023-06-23T15:06:14+00:00\",\"author\":{\"@id\":\"https:\\\/\\\/krm.swiss\\\/en\\\/#\\\/schema\\\/person\\\/6af1b03b3936809e3ff9bd196f609cce\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/krm.swiss\\\/en\\\/art-9-gebuev-timestamps-and-dcf-77\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/krm.swiss\\\/en\\\/art-9-gebuev-timestamps-and-dcf-77\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/krm.swiss\\\/en\\\/art-9-gebuev-timestamps-and-dcf-77\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/krm.swiss\\\/en\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Art. 9 GeB\u00fcV, Timestamps and DCF 77\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/krm.swiss\\\/en\\\/#website\",\"url\":\"https:\\\/\\\/krm.swiss\\\/en\\\/\",\"name\":\"krm Information Governance\",\"description\":\"Wir verbessern Ihre Kompetenz im Datenmanagement\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/krm.swiss\\\/en\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/krm.swiss\\\/en\\\/#\\\/schema\\\/person\\\/6af1b03b3936809e3ff9bd196f609cce\",\"name\":\"Bruno Wildhaber\",\"url\":\"https:\\\/\\\/krm.swiss\\\/en\\\/author\\\/brwildhaber\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Art. 9 GeB\u00fcV, Timestamps and DCF 77 - krm Information Governance","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/krm.swiss\/en\/art-9-gebuev-timestamps-and-dcf-77\/","og_locale":"en_US","og_type":"article","og_title":"Art. 9 GeB\u00fcV, Timestamps and DCF 77 - krm Information Governance","og_description":"Bad news for operators of systems which use the DCF 77 signal for time stamping. 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