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How to Decrypt A File Without Password / Key?


Summary: Generally, files were encrypted by virus attack will cause the file path or drive inaccessibly. Then how to decrypt a file without password, key or certificate? Today in this article we will guide you to perform encrypt file recovery to get back the original files before decryption.

Bitwar Data Recovery for Windows downloadBitwar Data Recovery for Mac download

Why ransomeware loves to encrypt files?

We've known many cases form Internet and our customers, the SD card or the computer hard drive gets kidnaped by ransomware, it usually encrypts the important files of yours and force you to pay Bitcoin to their account to unlock the files.

EFS encrypt Tool on Windows 7/8/10

Normally if we would like to keep secrets on the privacy files, most of the users will consider EFS encrypt tool, EFS is short name for Encrypting File System, which Microsoft Windows encrypt tool that provides filesystem-level encryption, the technology enables files to be transparently encrypted to protect confidential data with physical access to the computer.

However, EFS will need a file encryption key, we called FEK to access the files, generally, it allows user to export the pfx certificate and you'd better save carefully to safe path to make sure the files can be accessed.

How to decrypt a file after lost EFS certificate?

You'll then have to know first how the virus kidnap the files.

Make copies of the files or folders >> Encrypt the copies >> Delete Original files or folders

By knowing how the ransonware works, we can then try primary to use Bitwar Data Recovery software, which is a free trial data recovery software has powerful functions that allows users to recover original files or folders which deleted by virus or Trojan.

Steps to recover files with Bitwar Data Recovery

Step 1. Download and then Install Bitwar Data Recovery to the partition or external drive that has no encrypt files.
Bitwar Data Recovery for Windows downloadBitwar Data Recovery for Mac download

Step 2. Launch the software and then select the partition or device you have the files being encrypted.
Step 3. Run Scan to search original files and you can even double click the files to preview the files, hit Recover after selected target files or folders.
How to decrypt a file without password/key?

Tips: Please DO NOT save the files back to the partition or device where has encrypted files.

Safer way to keep certificate

1. Once exported the certificate, send this certificate to someone you can trust.
2. Ask him/her to send back the certificate to you to decrypt files.

In conclusion

Follow up the tutorial and you may have no trouble on how to decrypt a file easily and quickly without certificate, key or password again. However, please aware that if the files were encrypted by third-party tool, it won't works for you to decrypt that file.
  


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