Opening files

How to open an ASiC-E file you just received

Someone sent you a file ending in .asice and you have never seen one before. This is a calm walkthrough for a first encounter: what the file is, how to open an ASiC-E file, and what to answer the sender.

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What you have received

An .asice file is the digital equivalent of a signed paper. A bank, employer, landlord, notary or public authority has put a document in an electronic envelope and sealed it with a digital signature. In the European Union such a signature can carry the same legal weight as a handwritten one.

Is it safe to open?

Yes, with a viewer. A container holds documents, not programs. Viewing it in a browser displays the documents without executing anything. Apply the usual care: if you did not expect the message, confirm with the sender through another channel.

Open it, step by step

  1. Download the attachment. Remember which folder it went to, usually Downloads.
  2. Open asiceviewer.com in your normal browser.
  3. Drag the file onto the page, or click the box and choose it.
  4. Read the document that appears on the right.
  5. Look at the left side: the names under Signatures are the people who signed.

Understand what you see

On screenMeaning
A name with a date and timeThat person signed at that moment
"Integrity OK"The document has not been changed since signing
Two signature cardsTwo people have signed
No signature cardsThe container has not been signed yet

What does the sender want from you?

  • "Here is your signed copy." Nothing more to do. Keep the .asice file; it is your proof.
  • "Please sign and return." You need DigiDoc4 and an ID-card, Mobile-ID or Smart-ID. Open the file there, add your signature and send the file back.
  • "Please confirm receipt." Reply normally. Opening the file does not sign anything.

Keep the original

Save the .asice file itself in a safe place. A PDF copied out of it is convenient for reading, but only the container proves who signed. If you read on a phone, the Android app can store and reopen it offline. For the background, see what is an ASiC-E file.

Frequently asked questions

Did I sign something by opening the file?

No. Opening or viewing a container never creates a signature. Signing requires a deliberate action with your PIN.

I am not in Estonia. Can I still open the file?

Yes. A browser-based viewer works anywhere, and the format is a European standard.