{"id":7432,"date":"2025-08-20T16:48:53","date_gmt":"2025-08-20T14:48:53","guid":{"rendered":"https:\/\/podpisano-new.local\/?p=7432"},"modified":"2026-08-18T21:42:08","modified_gmt":"2026-08-18T19:42:08","slug":"cades-xades-czy-pades-porownanie-podpisow-wewnetrznych-i-zewnetrznych","status":"publish","type":"post","link":"https:\/\/podpisano.pl\/en\/cades-xades-czy-pades-porownanie-podpisow-wewnetrznych-i-zewnetrznych\/","title":{"rendered":"Internal versus external signatures - CAdES, XAdES or PAdES? A comparison of internal and external signatures.  (Part 2)"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"7432\" class=\"elementor elementor-7432\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1efe208d e-con-full e-flex e-con e-parent\" data-id=\"1efe208d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d39dd29 elementor-widget elementor-widget-text-editor\" data-id=\"d39dd29\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><b>We <a href=\"https:\/\/podpisano.pl\/en\/podpis-wewnetrzny-a-zewnetrzny-czym-sie-roznia-i-kiedy-je-stosowac\/\">earlier<\/a> parts we described PAdES and XAdES. Now it's time for CAdES - we look at how internal and external signatures work in this format and what applications it has in business.<\/b><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-16ad35f elementor-widget elementor-widget-text-editor\" data-id=\"16ad35f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">A qualified electronic signature can be placed inside a document (internal signature) or as a separate file (external signature). Both forms provide the same level of security, but differ in terms of technology and practicality in use.<\/span><\/p><p><span style=\"font-weight: 400;\">W <a href=\"https:\/\/podpisano.pl\/en\/podpis-wewnetrzny-a-zewnetrzny-czym-sie-roznia-i-kiedy-je-stosowac\/\">first part<\/a> article we described in detail the differences between internal and external signatures using the PAdES and XAdES formats as examples. Now, in turn, we will look at another format - CAdES - and provide practical advice on in which cases an external signature will work better, and in which cases an internal signature will work better.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-44afccd elementor-widget elementor-widget-heading\" data-id=\"44afccd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">CAdES format - CMS\/PKCS#7 signature (internal or external)<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c372d03 elementor-widget elementor-widget-text-editor\" data-id=\"c372d03\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\"><strong>CAdES<\/strong> (CMS Advanced Electronic Signature) is another qualified signature format based on the Cryptographic Message Syntax standard (PKCS#7). <\/span><\/p><p><span style=\"font-weight: 400;\">In practice, CAdES most often takes the form of <\/span><span style=\"font-weight: 400;\"><em>cryptographic envelope<\/em>\u00a0 <\/span><span style=\"font-weight: 400;\">with the extension .p7m, .p7s or .sig, which contains the signed data or references to it. This format is universal in terms of file types - it allows you to sign any binary data: text documents (DOC\/XLS), images, PDF files, ZIP archives, and even <a href=\"https:\/\/podpisano.pl\/en\/jak-poradzic-sobie-z-duzym-plikiem-przy-podpisie-kwalifikowanym-praktyczny-przewodnik\/\">large data sets<\/a> or executable files. Thanks to this versatility, CAdES is sometimes used in communication between IT systems and in business solutions requiring the signing of unusual files.<\/span><\/p><p><span style=\"font-weight: 400;\">In the case of CAdES, we can deal with an internal (surrounding) signature - then a single .p7m file is created, which contains the original document together with the signature. Such a file is consistent and easy to upload as a single item, but requires special software to open (the average user will not open a .p7m without a dedicated application). Alternatively, CAdES can act as an external signature - in which case the original file remains unchanged, and a signature file (e.g., with a .p7s or .sig extension) is generated separately, similar to XAdES. Both methods are compatible with <a href=\"https:\/\/podpisano.pl\/en\/eidas-cyfrowe-zaufanie-w-unii-europejskiej-co-to-oznacza-dla-ciebie\/\">eIDAS<\/a>; the choice depends on your needs. Many signature programs (e.g., Certum) allow you to choose \u201eexternal signature\u201d or \u201einternal signature\u201d in CAdES format.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-eda4e20 elementor-widget elementor-widget-heading\" data-id=\"eda4e20\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Advantages of the CAdES format<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c68d49e elementor-widget elementor-widget-text-editor\" data-id=\"c68d49e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Any file type - CAdES can be used to sign virtually any type of electronic data. It is the best choice if we need to sign a file that cannot be easily covered by another format (e.g. a non-standard binary format).<\/span><span style=\"font-weight: 400;\"><br \/><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">One extension for different data - a .p7m signature file can contain a document of any format, making it easy to standardize. Whether signing a PDF or AVI, the result is .p7m.<\/span><span style=\"font-weight: 400;\"><br \/><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Compact signature - CAdES generates a relatively small data overhead. A signature (regardless of the size of the original) typically has a volume of a few kilobytes. It is memory-efficient and quick to verify, thanks to a defined, binary signature structure.<\/span><span style=\"font-weight: 400;\"><br \/><br \/><\/span><\/li><li><span style=\"font-weight: 400;\">Popularity in systems - although end users are less likely to consciously choose CAdES, the format is widely used inside applications and services (e.g. for signing data packets, electronic invoices, server-to-server communications). Its advantages are appreciated by automated solutions - e.g., signing and verifying a large number of table files can be implemented precisely in CAdES for efficiency.<br \/><\/span><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6c8b820 elementor-widget elementor-widget-heading\" data-id=\"6c8b820\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Limitations of the CAdES format\n<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-772b5d9 elementor-widget elementor-widget-text-editor\" data-id=\"772b5d9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Requires dedicated reading software - the person receiving the .p7m file will not preview its contents without using a special signature verification application. For an untrained recipient, this can be confusing - the signature file will not open like a regular document, raising questions of \u201ehow to sign\/read it?\u201d. It is necessary to use a verification tool (such as the signature provider's program).<\/span><span style=\"font-weight: 400;\"><br \/><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">No visible seal in the document - the CAdES signature is completely separated from the content of the document, it does not offer any graphical representation of the signature in the content itself (you cannot see the \u201esignature\u201d on the printout or file preview). If you care about the visual effect of the signature on the document, CAdES will not provide this.<\/span><span style=\"font-weight: 400;\"><br \/><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Difficulties with multiple signatures - in a scenario where several people are to sign the same document, CAdES in-house variant generates a \u201ematrix\u201d phenomenon. This means that each successive signature creates a new .p7m file, containing the previous signed file inside - nested <\/span><span style=\"font-weight: 400;\">envelopes <\/span><span style=\"font-weight: 400;\">signatures. As a result, handling multiple signatures on one document becomes cumbersome (successive layers of signatures). In XAdES or PAdES format there is no such problem - there you can add signatures without wrapping the file in successive layers.<\/span><span style=\"font-weight: 400;\"><br \/><br \/><\/span><\/li><li><span style=\"font-weight: 400;\">Less popular among users - most people associate PDF signing (PAdES) or possibly .xml files with signing (XAdES). CAdES as .p7s\/.p7m is less intuitive for the average user. As a result, if you send a counterparty a signed document in CAdES format, he or she may not know how to open or verify it - instruction is sometimes necessary. That's why CAdES is more often used in established business relationships or inside systems, where parties know how to handle such a signature.<br \/><\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0beefa7 elementor-widget elementor-widget-heading\" data-id=\"0beefa7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">When to use an internal signature and when to use an external one?\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3527c7c elementor-widget elementor-widget-text-editor\" data-id=\"3527c7c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">The choice between internal and external signatures depends on the context of use of the document and the requirements of the recipient. Here are some practical tips:<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Documents for people (e.g., contracts, letters in PDF)<\/b><span style=\"font-weight: 400;\"> - when sending a signed document to a person who is simply to read it and be sure of its authenticity, an internal signature in PAdES format works best. The recipient receives a single PDF file, which he or she can easily open, and the program (such as Acrobat Reader) will immediately show information about the validity of the signature. This is the easiest way to sign a document in business and government. An external signature in this case could only complicate the situation (you would have to attach two files and explain how to verify them).<\/span><\/li><\/ul><p>\u00a0<\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Documents in formats other than PDF<\/b><span style=\"font-weight: 400;\"> - if we need to sign a non-PDF file, we have a choice of XAdES or CAdES. Here the decision internal vs. external depends on the circumstances. If the document is to go to an office or system that requires a specific format (e.g., many e-government platforms only accept XAdES signatures as a separate file when XML is involved), then we use an external XAdES signature as required. On the other hand, when we sign, for example, a Word file for internal company use, internal CAdES can be considered - there will be a .p7m file containing the document, which colleagues will verify in their software. However, if the recipient of such a file may have difficulty opening the .p7m, an alternative is to sign externally (a separate .sig) and leave the original DOCX - but then again, you need to make sure that the two parts are not separated.<\/span><\/li><\/ul><p>\u00a0<\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Large files<\/b><span style=\"font-weight: 400;\"> - in case <\/span><span style=\"font-weight: 400;\"><a href=\"https:\/\/podpisano.pl\/en\/jak-poradzic-sobie-z-duzym-plikiem-przy-podpisie-kwalifikowanym-praktyczny-przewodnik\/\">large<\/a> documents (link)<\/span><span style=\"font-weight: 400;\"> (tens of MB) often recommend the use of an external signature. Why? Because with an internal signature, a new file is created containing the entire original plus the signature, doubling the amount of data to be transferred and stored. An external signature, on the other hand, is tiny (on the order of a few\/tens of kB) and can be transferred separately. In practice, vendors indicate that the external signature will better handle files larger than ~25 MB. For files of that size, an internal signature could be troublesome (e.g., it won't fit into the email attachment limit or the platform will refuse to accept a file that is too large). Using an external signature, we transfer the large original file without modification, and the signature as a separate small file - which is sometimes a practical solution.<\/span><\/li><\/ul><p>\u00a0<\/p><ul><li><b>Formal and system requirements<\/b><span style=\"font-weight: 400;\"> - It is always a good idea to check what formats and types of signatures are accepted by the recipient or the system to which you are submitting the document. Some institutions explicitly specify that, for example, PDF documents should be signed with PAdES, and XML forms - with an external XAdES signature (a separate file), or require a specific standard (e.g. ASiC). In such situations, the decision is imposed by requirements in advance. Fortunately, most e-signature software allows you to easily switch the format and type of signature according to your needs - just select the appropriate options before signing.<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ea77411 elementor-widget elementor-widget-text-editor\" data-id=\"ea77411\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">In summary, the internal signature works well where we value the convenience of a single file and readability (<a href=\"https:\/\/podpisano.pl\/en\/xades-i-pades-dwa-oblicza-e-podpisu\/\">mainly PDF\/PAdES<\/a> for typical documents), while the external signature is indispensable in scenarios that require flexibility - with different file formats, automatic data processing or very large attachments. However, regardless of the method chosen, both types of signatures guarantee the same <a href=\"https:\/\/podpisano.pl\/en\/jak-zabezpieczyc-dokument-na-lata-konserwacja-podpisow-elektronicznych-w-praktyce\/\">The level of security and legal validity implied by a qualified certificate<\/a>.<\/span><\/p><p><span style=\"font-weight: 400;\">It's crucial that the recipient can verify the signature - so always provide all necessary files and instructions when using less obvious forms (such as .xades or .p7m). With this knowledge, we can consciously choose the format and signature type best suited to the situation, ensuring both convenience and compliance.<\/span><\/p><p><b>\u00a0<\/b><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4a554c3 elementor-widget-divider--view-line_icon elementor-view-default elementor-widget-divider--element-align-center elementor-widget elementor-widget-divider\" data-id=\"4a554c3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t\t<div class=\"elementor-icon elementor-divider__element\">\n\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-far-hand-point-up\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M105.6 83.2v86.177a115.52 115.52 0 0 0-22.4-2.176c-47.914 0-83.2 35.072-83.2 92 0 45.314 48.537 57.002 78.784 75.707 12.413 7.735 23.317 16.994 33.253 25.851l.146.131.148.129C129.807 376.338 136 384.236 136 391.2v2.679c-4.952 5.747-8 13.536-8 22.12v64c0 17.673 12.894 32 28.8 32h230.4c15.906 0 28.8-14.327 28.8-32v-64c0-8.584-3.048-16.373-8-22.12V391.2c0-28.688 40-67.137 40-127.2v-21.299c0-62.542-38.658-98.8-91.145-99.94-17.813-12.482-40.785-18.491-62.791-15.985A93.148 93.148 0 0 0 272 118.847V83.2C272 37.765 234.416 0 188.8 0c-45.099 0-83.2 38.101-83.2 83.2zm118.4 0v91.026c14.669-12.837 42.825-14.415 61.05 4.95 19.646-11.227 45.624-1.687 53.625 12.925 39.128-6.524 61.325 10.076 61.325 50.6V264c0 45.491-35.913 77.21-39.676 120H183.571c-2.964-25.239-21.222-42.966-39.596-59.075-12.65-11.275-25.3-21.725-39.875-30.799C80.712 279.645 48 267.994 48 259.2c0-23.375 8.8-44 35.2-44 35.2 0 53.075 26.4 70.4 26.4V83.2c0-18.425 16.5-35.2 35.2-35.2 18.975 0 35.2 16.225 35.2 35.2zM352 424c13.255 0 24 10.745 24 24s-10.745 24-24 24-24-10.745-24-24 10.745-24 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9.4 24.6 0 33.9L127.9 256l96.4 96.4c9.4 9.4 9.4 24.6 0 33.9L201.7 409c-9.4 9.4-24.6 9.4-33.9 0l-136-136c-9.5-9.4-9.5-24.6-.1-34z\"><\/path><\/svg><span class=\"elementor-screen-only\">Prev<\/span><\/span><span class=\"elementor-post-navigation__link__prev\"><span class=\"post-navigation__prev--label\">Previous<\/span><\/span><\/a>\t\t\t<\/div>\n\t\t\t\t\t\t<div class=\"elementor-post-navigation__next elementor-post-navigation__link\">\n\t\t\t\t<a href=\"https:\/\/podpisano.pl\/en\/dane-ustrukturyzowane-a-nieustrukturyzowane-poradnik-podpisu-elektronicznego\/\" rel=\"next\"><span class=\"elementor-post-navigation__link__next\"><span class=\"post-navigation__next--label\">Next<\/span><\/span><span class=\"post-navigation__arrow-wrapper post-navigation__arrow-next\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-angle-right\" viewbox=\"0 0 256 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z\"><\/path><\/svg><span class=\"elementor-screen-only\">Next<\/span><\/span><\/a>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e3b2a02 elementor-widget elementor-widget-heading\" data-id=\"e3b2a02\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Qualified signatures SimplySign and Certum Mini<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8bba10a elementor-widget elementor-widget-text-editor\" data-id=\"8bba10a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"vc_row wpb_row vc_row-fluid vc_custom_1685206387589\"><div class=\"wpb_column vc_column_container vc_col-sm-6\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><div class=\"wpb_text_column wpb_content_element\"><div class=\"wpb_wrapper\"><p>If you have any concerns or questions, please contact us<\/p><p><strong><a href=\"tel:+48224170555\">+48 22 417 05 55<\/a><\/strong><\/p><p>We'll answer your questions, find a time that works for you, and match you with an advisor at one of our locations throughout Poland.<\/p><p>You can also write an email from us\u00a0<strong><a href=\"mailto:kontakt@podpisano.pl\">contact@podpisano.pl.<\/a><\/strong>\u00a0<\/p><\/div><\/div><\/div><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-13d30fb e-con-full e-flex e-con e-child\" data-id=\"13d30fb\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8d92a82 elementor-widget elementor-widget-theme-site-logo elementor-widget-image\" data-id=\"8d92a82\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"theme-site-logo.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/podpisano.pl\/en\">\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"394\" src=\"https:\/\/podpisano.pl\/wp-content\/uploads\/2024\/06\/podpisano.pl-autoryzowany-partenr-Certum.png\" class=\"attachment-full size-full wp-image-5452\" alt=\"podpisano.pl - authorized partner of Certum\" srcset=\"https:\/\/podpisano.pl\/wp-content\/uploads\/2024\/06\/podpisano.pl-autoryzowany-partenr-Certum.png 500w, https:\/\/podpisano.pl\/wp-content\/uploads\/2024\/06\/podpisano.pl-autoryzowany-partenr-Certum-300x236.png 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/>\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Data in XML format, ZIP archives or huge files - it is not always possible to conveniently sign them with a standard PAdES signature. In such situations, it is worth reaching for an external signature (e.g. XAdES or CAdES) - find out what it consists of and when it is the best solution.<\/p>","protected":false},"author":322,"featured_media":7434,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[139],"tags":[314,336,296,290,291],"class_list":["post-7432","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-podpisy-kwalifikowane","tag-dokumenty-elektroniczne","tag-e-sprawozdanie","tag-podpis-elektroniczny","tag-podpis-kwalifikowany","tag-weryfikacja-podpisu-kwalifikowanego"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.7 (Yoast SEO v28.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Podpis wewn\u0119trzny a zewn\u0119trzny \u2013 CAdES, XAdES czy PAdES? Por\u00f3wnanie podpis\u00f3w wewn\u0119trznych i zewn\u0119trznych. (Cz\u0119\u015b\u0107 2) - Podpisano.pl<\/title>\n<meta name=\"description\" content=\"Czym jest podpis CAdES i czym r\u00f3\u017cni si\u0119 od PAdES i XAdES? Sprawd\u017a, jak dzia\u0142aj\u0105 podpisy wewn\u0119trzne i zewn\u0119trzne oraz jakie maj\u0105 zastosowanie w biznesie.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/podpisano.pl\/en\/cades-xades-czy-pades-porownanie-podpisow-wewnetrznych-i-zewnetrznych\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Podpis wewn\u0119trzny a zewn\u0119trzny \u2013 CAdES, XAdES czy PAdES? Por\u00f3wnanie podpis\u00f3w wewn\u0119trznych i zewn\u0119trznych. 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