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pgpry - PGP private key recovery Copyright (C) 2010 Jonas Gehring ================================ pgpry is a Pthread-based password recovery program for private OpenPGP keys. It reads private key data from stdin and performs a brute-force attack in order to recover the pass phrase. Numerous options for restricting the key space are offered, including regular expression filtering and prefix/suffix filters. FEATURES -------- - Guessing based on a dictionary or a character set (incremental and random guessing) - State saving and restoring (for incremental guessing) - Regular expression filtering - Addition of prefixes/suffixes to the guessed words - Parsing of binary and ASCII-armored OpenPGP data DEPENDENCIES ------------ pgpry utilizes the following libraries: - OpenSSL (libcrypto, libssl) - POSIX threads (libpthread) - Standard C++ runtime (libstdc++) These are compile-time as well as run-time dependencies. USAGE INFORMATION ----------------- For general usage information, run pgpry with "--help". More specific usage instructions follow. - Regular expression filtering: Regular expressions are read from the file name supplied via the respective command line argument. The following format is used (indentation added for clarity): + $POSITIVE_REGEX - $NEGATIVE_REGEX ... A pass phrase will be tested if it matches all positive expressions and doesn't match any negative expression. - Prefix/Suffix filtering: Regular expression filtering can be time-consuming. If possible prefixes or suffixes are known, they can be passed as command-line arguments instead. OPTIONAL FEATURES ----------------- pgpry ships with optional features. They aren't included in the default build since they either depend on specific hardware or are licensed under a different model then pgpry. All of those features can be enabled using the configure script shipping with the source distribution. Here's a detailed listing of the currently offered optional features: - block-sha1 (--enable-block-sha1): Use the fast SHA1 algorithm from the git distribution, written by Linus Torvalds. This algorithm should be faster than those included in the OpenSSL distribution. However, it is licensed under the GPL version 2, whereas pgpry is licensed under version 3. Please see src/3rdparty/block-sha1/COPYING for further information. AUTHOR ------ Jonas Gehring <firstname.lastname@example.org> LICENSE ------- pgpry - PGP private key recovery Copyright (C) 2010 Jonas Gehring This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>.