Thegrideon Software
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CAD Password Recovery tool

CAD Password Recovery

  • CAD Password by is advanced password recovery tool for AutoCAD® DWG drawing files (*.dwg).
  • CAD Password works with password protected *.dwg files of all versions from AutoCAD 2004 upto the latest AutoCAD 2016.

CAD Password Recovery Features:

  • Several attacks can be configured and queued: info
    • Dictionary attacks with modifications (wordlists for several languages are included).
    • Brute-force attacks based on charset and length selected.
    • Mixed attacks (combination of parts: dictionaries, brute force and fixed).
    • Virtually endless number of combinations for mixed attacks.
    • Advanced keyboard layouts-aware recovery technique.
  • AutoCAD 2013-2016 file formats are supported.
  • Highly optimized code (SSE, AVX) guarantees maximum performance. recovery speed
  • Supports up to 64 simultaneous processing threads (multi-CPU, multi-core and multi-GPU).
  • Utilizes NVIDIA and AMD GPUs with a high-performance methods.
  • Utilizes Intel HD Graphics GPUs (4000 and 5000 series, Iris Pro).Intel HD GPUs
  • Windows 10 Compatible.
  • Guaranteed Password Recovery Service is available.

Program Screenshots:

CAD Password Racovery Tool Password recovery attacks

Support and Contacts

Please, feel free to contact us. Just go to the contact page and send us a message, or visit our Support forum.

Additional Information:

How it works?
DWG files encryption applied in AutoCAD® can be based on several selectable crypto-providers with key length from 40bit to 128bit. CAD Password works with all these settings. In order to recover AutoCAD® DWG file passwords, candidates have to be created based on dictionary, sequentially based on a charset and length selected or as combination of dictionaries, sequences and fixed parts. CAD Password allows you to set several attacks in queue, split password in parts and set each part independently with virtually endless number of combinations. Additional modifications are available including unique keyboard layouts-aware recovery technique, char replacement (e.g. A or a with @), etc.

The default key length used in *.dwg files is 40-bit. So for every original password there is a multitude of equivalent passwords (for example, password "security" is equal to "8VAJ3CID" and to "0103788088713", all without quotes). Thus equivalent password can be found within limited timeframe regardless of the original password length and complexity. For default 40-bit encryption with no additional knowledge of the password used you can start the search with 9 chars length with "a...z" + "0...9" charset or 13 chars length with "0...9" charset (13 x "0...9" is usually faster).

What is the average speed?
Below you can find just several recovery speed samples with common CPUs and GPUs:

CPU:
 
Pass/s:
Time: ¹
Intel® Core™2 Duo
T7500 @ 2.20GHz
Intel® Atom™
Z3740 @ 1.33GHz
Intel® Core™ i3
2100 @ 3.10GHz
Intel® Core™ i7
2600 @ 3.40GHz
~ 4 000 000 ~ 4 300 000 ~ 7 500 000 ~ 16 500 000
~ 3 days ~ 3 days less than 2 days ~ 18 hours
CPU + GPU: ²
 
 
Pass/s:
Time: ¹
Intel® Core™ i3 2100 @ 3.10GHz +
AMD Radeon™ HD 6770
(~ equivalent gtx 550 ti)
Intel® Core™ i3 2100 @ 3.10GHz +
NVIDIA® GeForce® GTX 470
(~ equivalent HD 5850)
~ 13 000 000 ~ 17 000 000
~ 23 hours ~ 18 hours

Intel integrated GPUs starting from HD Graphics 4000 can be used for password recovery acceleration.
Intel GPU utilization is a unique feature of Thegrideon Software tools.

 
Pass/s:
Time: ¹
Intel® i3 4130 @ 3.40GHz + Intel HD Graphics 4400 + AMD Radeon™ R9 270
~ 10 500 000 ~ 13 500 000 ~ 25 000 000
~ 29 hours ~ 22 hours ~ 12 hours

¹ The time shown is the average time necessary to find equivalent password for encryption with 40-bit key (please check "How it works?" block above).
² GPU performance is somewhat variable with number of factors including GPU/CPU combination and even driver version. Please contact us if your recovery speed is noticeable different from the data above.
DWG is the native file format for AutoCAD® and a trademark of Autodesk, Inc.

Guaranteed Password Recovery Service for 40-bit Encryption
Thegrideon Software has prepared the set of password lookup tables (Rainbow tables) for the default 40-bit encryption with coverage close to 100%. These tables allow us to offer you guaranteed password recovery service for your DWG files within minutes for a small per file service fee.
There are two ways you can use our service:
1) You can upload your file to us for password recovery.
2) You can employ our service without sending any sensitive information!: Just open your protected file(s) in trial version of CAD Password and send us "File Service Signature" line for the file you need to have the password recovered (or just open all the files you need to have passwords recovered and send us the full CAD Password log).

Trial and Registration:

Trial version allows you to configure and run any attack for up to 3 minutes. Recovery progress is saved in trial version but not used in subsequent trial runs. If password is recovered first char is displayed only.

With the "Home User" License, you can use the program for non-commercial purposes in non-business, non-commercial environment. To use the program in a corporate, government or business environment, you should purchase the "Business User" License.

Home User license is only $29.95 and Business User license is $44.95.

After payment processing is completed, you will immediately receive the email with your registration key. The key should be entered into the evaluation version, which can be downloaded from this page.

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