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Allow volume key store in a file with cryptsetup.

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The --dump-master-key together with --master-key-file allows cryptsetup
to store the volume key to a file instead of standard output.
This commit is contained in:
Ondrej Kozina
2018-04-12 14:08:58 +02:00
committed by Milan Broz
parent 1f01754ea6
commit 0c6129c54e
5 changed files with 45 additions and 6 deletions
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10
src/cryptsetup.c
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@@ -1542,12 +1542,22 @@ static int luksDump_with_volume_key(struct crypt_device *cd)
if (r < 0)
goto out;
if (opt_master_key_file) {
r = tools_write_mk(opt_master_key_file, vk, vk_size);
if (r < 0)
goto out;
}
log_std("LUKS header information for %s\n", crypt_get_device_name(cd));
log_std("Cipher name: \t%s\n", crypt_get_cipher(cd));
log_std("Cipher mode: \t%s\n", crypt_get_cipher_mode(cd));
log_std("Payload offset:\t%d\n", (int)crypt_get_data_offset(cd));
log_std("UUID: \t%s\n", crypt_get_uuid(cd));
log_std("MK bits: \t%d\n", (int)vk_size * 8);
if (opt_master_key_file) {
log_std("Key stored to file %s.\n", opt_master_key_file);
goto out;
}
log_std("MK dump:\t");
for(i = 0; i < vk_size; i++) {