.asice is Associated Signature Container (ASiC-E)

File extension.asice
File formatAssociated Signature Container Extended (ASiC-E)
Developed byEuropean Telecommunications Standards Institute (ETSI)
Used forStoring and digitally signing documents
Can containMultiple files, signatures, and time stamps
Supported byDigiDoc4, Adobe Acrobat Reader DC, Foxit Reader
Open in EstoniaDigiDoc4 Client

What is an .asice file?

The .ASICE file extension is typically associated with "Associated Signature Containers" (ASiC-E). ASiC-E is a file format used for digitally signed and/or encrypted files. It is commonly used in the context of e-invoicing and other electronic document management systems where authenticity, integrity, and confidentiality are important.

An ASiC-E file is essentially a ZIP archive that contains one or more signed or encrypted files along with the signature and/or encryption metadata. The signature is used to provide a digital signature of the contents of the file, while the encryption is used to protect the confidentiality of the contents.

ASiC-E files are often used in Europe as a standard format for electronic invoicing, particularly in the public sector, as they comply with the European standard for electronic invoicing (EN 16931).

How to open an .ASICE file extension?

To open an .ASICE file extension, you will need a software application that is capable of processing digital signatures and encrypted files. There are several software tools available that can open and validate ASiC-E files, including:

  1. DigiDoc4 client: This is a free software tool developed by the Estonian government, which is widely used for digitally signing and verifying documents. It supports various signature and encryption formats, including ASiC-E.

  2. Adobe Acrobat Reader DC: This is a popular PDF reader that supports digital signatures and can open ASiC-E files.

  3. Open e-TrustEx ASiC Viewer: This is an online tool provided by the European Commission that can be used to open and validate ASiC-E files.

  4. SignServer: This is an open-source software tool developed by PrimeKey Solutions, which is capable of processing various digital signature formats, including ASiC-E.

Once you have installed a suitable software tool, you can simply double-click on the .ASICE file to open it. The software will then validate the digital signature and/or decrypt the file contents, depending on the encryption method used.

How to convert .ASICE file extension to other formats?

Since the ASiC-E file format is primarily used for digitally signed and/or encrypted files, the process of converting an .ASICE file to another format may not be straightforward.

If you need to extract the contents of an ASiC-E file, you can follow these steps:

  1. Rename the .ASICE file extension to .ZIP. This will allow you to access the contents of the file using any standard ZIP archive tool.

  2. Extract the contents of the ZIP archive to a folder.

  3. If the contents of the ASiC-E file are encrypted, you will need to use a suitable decryption tool to decrypt the files. The decryption tool will typically require the decryption key or password, which should have been provided to you when the ASiC-E file was created.

  4. Once the contents of the ASiC-E file have been extracted and decrypted (if necessary), you can convert the individual files to other formats using suitable file conversion tools.

It's important to note that the digital signature and/or encryption metadata that is included in the ASiC-E file will be lost during the conversion process. Therefore, the converted files will no longer have the same level of authenticity, integrity, and confidentiality that the original ASiC-E file had.

What are the benefits of using ASICE files?

  • Security: ASICE files use strong encryption to protect the data they contain. This makes them a secure way to store sensitive documents, such as contracts, invoices, and medical records.
  • Compliance: ASICE files are compliant with the eIDAS Regulation, which is the European Union's framework for electronic identification and trust services. This makes them a good choice for organizations that need to comply with government regulations.
  • Ease of use: ASICE files are easy to open and verify, even by non-technical users. This makes them a convenient way to share and collaborate on digitally signed documents.

What are the limitations of using ASICE files?

  • Size: ASICE files can be large, especially if they contain multiple digital signatures. This can make them slow to download and open.
  • Compatibility: Not all software supports the ASICE format. This can make it difficult to open and verify ASICE files on some devices.
  • Complexity: The ASICE format is complex and can be difficult to understand. This can make it difficult to troubleshoot problems with ASICE files.


Encoded and encrypted


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