Guaranteed PDF Decrypter

PDF password removal utility

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New 3.1 version
 

PDF Permission password removal

PDF Open password removal

   
 
Version history

3.3
  - Parsing and decryption engine substantially rewritten,
a lot of bugs fixed.
  - OpenCL version for Mac OS 

3.25
  - OpenCL code speed-up: on Fermi - up to 30%, on 
AMD - up to 15%
  - support of 40-bit encryption with revision 3
  - up to 5% key test optimization on Core 2/iX 
3.2
  - Acrobat X encryption support
  - OpenCL version, working on both NVIDIA and AMD cards.
Should be faster than CUDA version.
  - A lot of decryption and parsing bug fixes

3.11a
  - Fermi (GTX 4xx) support (only CUDA version).

3.11
  - Some parsing bugs fixed again
  - A little optimization for Core 2/Athlon K10 (less than 3%)
  - CUDA 3.0 linked

3.1
  - NVIDIA GPU accelaration added for 40-bit key testing.

3.02
  - Serious bug when decrypting compressed files fixed
  - "String truncated" warnings almost eliminated
  - Better PDF form support

3.01
  - Some parsing bugs fixed
  - Mac version is available

3.0
  - Acrobat 9.0 support, including 256-bit AES encryption and
Unicode passwords
  - Removal of some restrictions set by digital signatures
  - New version scheme: local and distibuted. 

2.3a
  - Several parsing/compatibility bugs fixed.

2.3
  - 30% speed-up on Core 2 chips. The theoretical value of 1100
ticks per password has been beat.
  - Better compatibility with PDF 1.7
  - New domain www.guapdf.com

2.22
  - Some parsing bugs fixed
  - "Illegal instruction" bug on AMD fixed (Linux version).

2.21
  - Serious AES decryption bug fixed

2.2
  - Acrobat 7.0 (PDF 1.6) support including AES encryption and
unencrypted metadata feature (restrictions removal only)
  - 10-25% speed-up on Pentium 4 and AMD. Kernel crypto function
for any processor now can be easily added and the best rate
functions are chosen automatically. New /pXYZ option.
(n-clients version only).
  - 2-clients version instead of 1-client (for the same price) to use
the power of dual/dual-core processors. 
  - DEMO limitation changed, now FREE version doesn't stop but
produces the file with few readable pages. 

2.1a
  - Interruption by Ctrl+C bug on multiprocessor and P4 HyperThreading
    computers fixed (command-line versions only)

2.1
  - Few decryption bugs fixed

2.0
  - GUI version available, command-line is now full Win32 application
  - Engine fully rewritten, Acrobat 6.0 (PDF 1.5) support, no more
"String truncated" warnings (at least, up to PDF 1.4)
  - Pentium 4 optimization
  - More accurate estimated time calculation

1.2:
   - Acrobat 5.x (PDF 1.4) 128-bit encryption support - restrictions
removal only, files encrypted with user password can't be
guaranteed decrypted.
   - Few parsing bugs have been fixed.
   - First client now can be considered as "server". The decryption
is performed on this client only. New /1 option. (n-clients versions
only).
   - Demo limitations has been changed slightly, now it can decrypt
larger files.
   - Linux version available.

1.1:
   - /p option has been extended, now you can decrypt files with
known  onwer password instantly.  Restrictions  remover  version
hasn't been changed.

1.0:
   - key testing is 5% faster
   - new options /p, /y
   - fixed minor bugs in parsing and decrypting
   - some interface improvement

0.9:
   - First  (BETA) version  released.
 
 

  Last updated: Dec, 2006 © Pavel Semjanov, 2000-06