Parallel PDF Password recovery is an utility for recover lost passwords of PDF documents. Supports RC4 and AES algorithms with 128 or 256 bit keys. Local SMP version can use up to 8 CPU processors/cores and up to 8 NVIDIA GPU cards of your home PC. Distributed version can vectorize the recovery process on clients (workstations) on your LAN or Internet. The simple and powerful Password Definition Language supports all well-known standard attacks (such as brute force, dictionary, misspelled password recovery etc) and also allows users to make their own attack types. PDL language is extremely efficient if user remembers any information about a forgotten password (for example, the password consists of two words separated by a special sign or has some digits at the end). The utility is highly optimized for all modern processors, like Core 2 or Athlon and for NVIDIA GPUs. All PDF versions supported, including latest Acrobat 9 files.