static const char *mpw_passwordForSite_v3(const uint8_t *masterKey, const char *siteName, const MPSiteType siteType, const uint32_t siteCounter,
const MPSiteVariant siteVariant, const char *siteContext) {
const char *siteScope = mpw_scopeForVariant( siteVariant );
// Calculate the site seed.
// sitePasswordSeed = hmac-sha256( masterKey, siteScope . #siteName . siteName . siteCounter . #siteContext . siteContext )
size_t sitePasswordInfoSize = 0;
uint8_t *sitePasswordInfo = NULL;
mpw_pushString( &sitePasswordInfo, &sitePasswordInfoSize, siteScope );
mpw_pushInt( &sitePasswordInfo, &sitePasswordInfoSize, htonl( strlen( siteName ) ) );
mpw_pushString( &sitePasswordInfo, &sitePasswordInfoSize, siteName );
mpw_pushInt( &sitePasswordInfo, &sitePasswordInfoSize, htonl( siteCounter ) );
if (siteContext) {
mpw_pushInt( &sitePasswordInfo, &sitePasswordInfoSize, htonl( strlen( siteContext ) ) );
mpw_pushString( &sitePasswordInfo, &sitePasswordInfoSize, siteContext );
}
if (!sitePasswordInfo) {
return NULL;
}
const uint8_t *sitePasswordSeed = mpw_hmac_sha256( masterKey, MP_dkLen, sitePasswordInfo, sitePasswordInfoSize );
mpw_free( sitePasswordInfo, sitePasswordInfoSize );
if (!sitePasswordSeed) {
return NULL;
}
// Determine the template.
const char *template = mpw_templateForType( siteType, sitePasswordSeed[0] );
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_charlen( 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_pushString( &masterKeySalt, &masterKeySaltSize, mpKeyScope );
mpw_pushInt( &masterKeySalt, &masterKeySaltSize, htonl( mpw_charlen( fullName ) ) );
mpw_pushString( &masterKeySalt, &masterKeySaltSize, fullName );
if (!masterKeySalt) {
ftl( "Could not allocate master key salt: %d\n", errno );
return NULL;
}
trc( "masterKeySalt ID: %s\n", mpw_idForBuf( 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_idForBuf( masterKey, MP_dkLen ) );
return masterKey;
}
static const char *mpw_passwordForSite_v1(const uint8_t *masterKey, const char *siteName, const MPSiteType siteType, const uint32_t siteCounter,
const MPSiteVariant siteVariant, const char *siteContext) {
const char *siteScope = mpw_scopeForVariant( siteVariant );
trc( "algorithm: v%d\n", 1 );
trc( "siteName: %s\n", siteName );
trc( "siteCounter: %d\n", siteCounter );
trc( "siteVariant: %d\n", siteVariant );
trc( "siteType: %d\n", siteType );
trc( "site scope: %s, context: %s\n", siteScope, siteContext? "<empty>": siteContext );
trc( "seed from: hmac-sha256(masterKey, %s | %s | %s | %s | %s | %s)\n",
siteScope, mpw_hex_l( htonl( strlen( siteName ) ) ), siteName,
mpw_hex_l( htonl( siteCounter ) ),
mpw_hex_l( htonl( siteContext? strlen( siteContext ): 0 ) ), siteContext? "(null)": siteContext );
// Calculate the site seed.
// sitePasswordSeed = hmac-sha256( masterKey, siteScope . #siteName . siteName . siteCounter . #siteContext . siteContext )
size_t sitePasswordInfoSize = 0;
uint8_t *sitePasswordInfo = NULL;
mpw_pushString( &sitePasswordInfo, &sitePasswordInfoSize, siteScope );
mpw_pushInt( &sitePasswordInfo, &sitePasswordInfoSize, htonl( mpw_charlen( siteName ) ) );
mpw_pushString( &sitePasswordInfo, &sitePasswordInfoSize, siteName );
mpw_pushInt( &sitePasswordInfo, &sitePasswordInfoSize, htonl( siteCounter ) );
if (siteContext) {
mpw_pushInt( &sitePasswordInfo, &sitePasswordInfoSize, htonl( mpw_charlen( siteContext ) ) );
mpw_pushString( &sitePasswordInfo, &sitePasswordInfoSize, siteContext );
}
if (!sitePasswordInfo) {
ftl( "Could not allocate site seed info: %d\n", errno );
return NULL;
}
trc( "sitePasswordInfo ID: %s\n", mpw_idForBuf( sitePasswordInfo, sitePasswordInfoSize ) );
const uint8_t *sitePasswordSeed = mpw_hmac_sha256( masterKey, MP_dkLen, sitePasswordInfo, sitePasswordInfoSize );
mpw_free( sitePasswordInfo, sitePasswordInfoSize );
if (!sitePasswordSeed) {
ftl( "Could not allocate site seed: %d\n", errno );
return NULL;
}
trc( "sitePasswordSeed ID: %s\n", mpw_idForBuf( sitePasswordSeed, 32 ) );
// Determine the template.
const char *template = mpw_templateForType( siteType, sitePasswordSeed[0] );
