91 lines
3.2 KiB
C
91 lines
3.2 KiB
C
//==============================================================================
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// This file is part of Master Password.
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// Copyright (c) 2011-2017, Maarten Billemont.
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//
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// Master Password is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Master Password is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You can find a copy of the GNU General Public License in the
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// LICENSE file. Alternatively, see <http://www.gnu.org/licenses/>.
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//==============================================================================
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#include <string.h>
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#include <errno.h>
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#include <arpa/inet.h>
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#include "mpw-types.h"
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#include "mpw-util.h"
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#define MP_N 32768LU
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#define MP_r 8U
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#define MP_p 2U
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// Inherited functions.
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MPMasterKey mpw_masterKey_v0(
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const char *fullName, const char *masterPassword);
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MPSiteKey mpw_siteKey_v0(
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MPMasterKey masterKey, const char *siteName, const MPCounterValue siteCounter,
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const MPKeyPurpose keyPurpose, const char *keyContext);
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const char *mpw_encrypt_v0(
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MPMasterKey masterKey, const char *plainText);
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const char *mpw_decrypt_v0(
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MPMasterKey masterKey, const char *cipherText);
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// Algorithm version overrides.
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static MPMasterKey mpw_masterKey_v1(
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const char *fullName, const char *masterPassword) {
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return mpw_masterKey_v0( fullName, masterPassword );
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}
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static MPSiteKey mpw_siteKey_v1(
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MPMasterKey masterKey, const char *siteName, const MPCounterValue siteCounter,
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const MPKeyPurpose keyPurpose, const char *keyContext) {
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return mpw_siteKey_v0( masterKey, siteName, siteCounter, keyPurpose, keyContext );
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}
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static const char *mpw_sitePassword_v1(
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MPSiteKey siteKey, const MPPasswordType passwordType) {
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// Determine the template.
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const char *template = mpw_templateForType( passwordType, siteKey[0] );
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trc( "template: %u => %s\n", siteKey[0], template );
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if (!template)
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return NULL;
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if (strlen( template ) > MPSiteKeySize) {
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err( "Template too long for password seed: %zu\n", strlen( template ) );
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return NULL;
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}
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// Encode the password from the seed using the template.
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char *const sitePassword = calloc( strlen( template ) + 1, sizeof( char ) );
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for (size_t c = 0; c < strlen( template ); ++c) {
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sitePassword[c] = mpw_characterFromClass( template[c], siteKey[c + 1] );
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trc( " - class: %c, index: %3u (0x%02hhX) => character: %c\n",
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template[c], siteKey[c + 1], siteKey[c + 1], sitePassword[c] );
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}
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trc( " => password: %s\n", sitePassword );
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return sitePassword;
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}
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static const char *mpw_encrypt_v1(
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MPMasterKey masterKey, const char *plainText) {
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return mpw_encrypt_v0( masterKey, plainText );
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}
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static const char *mpw_decrypt_v1(
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MPMasterKey masterKey, const char *cipherText) {
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return mpw_decrypt_v0( masterKey, cipherText );
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}
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