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This patch switches code to SPDX one-line license identifiers according to https://spdx.dev/learn/handling-license-info/ and replacing long license text headers. I used C++ format on the first line in style // SPDX-License-Identifier: <id> except exported libcryptsetup.h, when only C comments are used. The only additional changes are: - switch backend utf8.c from LGPL2+ to LGPL2.1+ (as in systemd) - add some additional formatting lines.
Simple example how to use libcryptsetup for password search. Run: crypt_dict luks|tcrypt <device|image> <dictionary> [cpus] luks|tcrypt specified device type (LUKS or TrueCrypt) <device|image> is LUKS or TrueCrypt device or image <dictionary> is list of passphrases to try (note trailing EOL is stripped) cpus - number of processes to start in parallel Format of dictionary file is simple one password per line, if first char on line is # it is skipped as comment. For LUKS, you have it run as root (device-mapper cannot create dmcrypt devices as nrmal user. Code need to map keyslots as temporary dmcrypt device.) For TrueCrypt devices root privilege is not required.