static const uint8_t *mpw_masterKeyForUser_v3(const char *fullName, const char *masterPassword) {
const char *mpKeyScope = mpw_scopeForVariant( MPSiteVariantPassword );
// Calculate the master key salt.
// masterKeySalt = mpKeyScope . #fullName . fullName
size_t masterKeySaltSize = 0;
uint8_t *masterKeySalt = NULL;
mpw_pushString( &masterKeySalt, &masterKeySaltSize, mpKeyScope );
mpw_pushInt( &masterKeySalt, &masterKeySaltSize, htonl( strlen( fullName ) ) );
mpw_pushString( &masterKeySalt, &masterKeySaltSize, fullName );
if (!masterKeySalt) {
return NULL;
}
// Calculate the master key.
// masterKey = scrypt( masterPassword, masterKeySalt )
const uint8_t *masterKey = mpw_scrypt( MP_dkLen, masterPassword, masterKeySalt, masterKeySaltSize, MP_N, MP_r, MP_p );
mpw_free( masterKeySalt, masterKeySaltSize );
if (!masterKey) {
return NULL;
}
return masterKey;
}
static const uint8_t *mpw_masterKeyForUser_v1(const char *fullName, const char *masterPassword) {
const char *mpKeyScope = mpw_scopeForVariant( MPSiteVariantPassword );
trc( "algorithm: v%d\n", 1 );
trc( "fullName: %s (%zu)\n", fullName, mpw_utf8_strlen( fullName ) );
trc( "masterPassword: %s\n", masterPassword );
trc( "key scope: %s\n", mpKeyScope );
// Calculate the master key salt.
// masterKeySalt = mpKeyScope . #fullName . fullName
size_t masterKeySaltSize = 0;
uint8_t *masterKeySalt = NULL;
mpw_push_string( &masterKeySalt, &masterKeySaltSize, mpKeyScope );
mpw_push_int( &masterKeySalt, &masterKeySaltSize, htonl( mpw_utf8_strlen( fullName ) ) );
mpw_push_string( &masterKeySalt, &masterKeySaltSize, fullName );
if (!masterKeySalt) {
ftl( "Could not allocate master key salt: %d\n", errno );
return NULL;
}
trc( "masterKeySalt ID: %s\n", mpw_id_buf( masterKeySalt, masterKeySaltSize ) );
// Calculate the master key.
// masterKey = scrypt( masterPassword, masterKeySalt )
const uint8_t *masterKey = mpw_scrypt( MP_dkLen, masterPassword, masterKeySalt, masterKeySaltSize, MP_N, MP_r, MP_p );
mpw_free( masterKeySalt, masterKeySaltSize );
if (!masterKey) {
ftl( "Could not allocate master key: %d\n", errno );
return NULL;
}
trc( "masterKey ID: %s\n", mpw_id_buf( masterKey, MP_dkLen ) );
return masterKey;
}
