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Code Issues Releases Wiki Activity

Rename KDFParams -> Params

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This commit is contained in:
Alexander Neumann 2017-10-28 10:28:29 +02:00
parent f3bff12939
commit 178e946fc7
3 changed files with 17 additions and 17 deletions
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12
internal/crypto/kdf.go
View File

@ -12,22 +12,22 @@ import (
const saltLength = 64 const saltLength = 64
// KDFParams are the default parameters used for the key derivation function KDF(). // Params are the default parameters used for the key derivation function KDF().
type KDFParams struct { type Params struct {
N int N int
R int R int
P int P int
} }
// DefaultKDFParams are the default parameters used for Calibrate and KDF(). // DefaultKDFParams are the default parameters used for Calibrate and KDF().
var DefaultKDFParams = KDFParams{ var DefaultKDFParams = Params{
N: sscrypt.DefaultParams.N, N: sscrypt.DefaultParams.N,
R: sscrypt.DefaultParams.R, R: sscrypt.DefaultParams.R,
P: sscrypt.DefaultParams.P, P: sscrypt.DefaultParams.P,
} }
// Calibrate determines new KDF parameters for the current hardware. // Calibrate determines new KDF parameters for the current hardware.
func Calibrate(timeout time.Duration, memory int) (KDFParams, error) { func Calibrate(timeout time.Duration, memory int) (Params, error) {
defaultParams := sscrypt.Params{ defaultParams := sscrypt.Params{
N: DefaultKDFParams.N, N: DefaultKDFParams.N,
R: DefaultKDFParams.R, R: DefaultKDFParams.R,
@ -41,7 +41,7 @@ func Calibrate(timeout time.Duration, memory int) (KDFParams, error) {
return DefaultKDFParams, errors.Wrap(err, "scrypt.Calibrate") return DefaultKDFParams, errors.Wrap(err, "scrypt.Calibrate")
} }
return KDFParams{ return Params{
N: params.N, N: params.N,
R: params.R, R: params.R,
P: params.P, P: params.P,
@ -50,7 +50,7 @@ func Calibrate(timeout time.Duration, memory int) (KDFParams, error) {
// KDF derives encryption and message authentication keys from the password // KDF derives encryption and message authentication keys from the password
// using the supplied parameters N, R and P and the Salt. // using the supplied parameters N, R and P and the Salt.
func KDF(p KDFParams, salt []byte, password string) (*Key, error) { func KDF(p Params, salt []byte, password string) (*Key, error) {
if len(salt) != saltLength { if len(salt) != saltLength {
return nil, errors.Errorf("scrypt() called with invalid salt bytes (len %d)", len(salt)) return nil, errors.Errorf("scrypt() called with invalid salt bytes (len %d)", len(salt))
} }

18
internal/repository/key.go
View File

@ -44,9 +44,9 @@ type Key struct {
name string name string
} }
// KDFParams tracks the parameters used for the KDF. If not set, it will be // Params tracks the parameters used for the KDF. If not set, it will be
// calibrated on the first run of AddKey(). // calibrated on the first run of AddKey().
var KDFParams *crypto.KDFParams var Params *crypto.Params
var ( var (
// KDFTimeout specifies the maximum runtime for the KDF. // KDFTimeout specifies the maximum runtime for the KDF.
@ -76,7 +76,7 @@ func OpenKey(ctx context.Context, s *Repository, name string, password string) (
} }
// derive user key // derive user key
params := crypto.KDFParams{ params := crypto.Params{
N: k.N, N: k.N,
R: k.R, R: k.R,
P: k.P, P: k.P,
@ -166,13 +166,13 @@ func LoadKey(ctx context.Context, s *Repository, name string) (k *Key, err error
// AddKey adds a new key to an already existing repository. // AddKey adds a new key to an already existing repository.
func AddKey(ctx context.Context, s *Repository, password string, template *crypto.Key) (*Key, error) { func AddKey(ctx context.Context, s *Repository, password string, template *crypto.Key) (*Key, error) {
// make sure we have valid KDF parameters // make sure we have valid KDF parameters
if KDFParams == nil { if Params == nil {
p, err := crypto.Calibrate(KDFTimeout, KDFMemory) p, err := crypto.Calibrate(KDFTimeout, KDFMemory)
if err != nil { if err != nil {
return nil, errors.Wrap(err, "Calibrate") return nil, errors.Wrap(err, "Calibrate")
} }
KDFParams = &p Params = &p
debug.Log("calibrated KDF parameters are %v", p) debug.Log("calibrated KDF parameters are %v", p)
} }
@ -180,9 +180,9 @@ func AddKey(ctx context.Context, s *Repository, password string, template *crypt
newkey := &Key{ newkey := &Key{
Created: time.Now(), Created: time.Now(),
KDF: "scrypt", KDF: "scrypt",
N: KDFParams.N, N: Params.N,
R: KDFParams.R, R: Params.R,
P: KDFParams.P, P: Params.P,
} }
hn, err := os.Hostname() hn, err := os.Hostname()
@ -202,7 +202,7 @@ func AddKey(ctx context.Context, s *Repository, password string, template *crypt
} }
// call KDF to derive user key // call KDF to derive user key
newkey.user, err = crypto.KDF(*KDFParams, newkey.Salt, password) newkey.user, err = crypto.KDF(*Params, newkey.Salt, password)
if err != nil { if err != nil {
return nil, err return nil, err
} }

4
internal/repository/testing.go
View File

@ -15,7 +15,7 @@ import (
) )
// testKDFParams are the parameters for the KDF to be used during testing. // testKDFParams are the parameters for the KDF to be used during testing.
var testKDFParams = crypto.KDFParams{ var testKDFParams = crypto.Params{
N: 128, N: 128,
R: 1, R: 1,
P: 1, P: 1,
@ -28,7 +28,7 @@ type logger interface {
// TestUseLowSecurityKDFParameters configures low-security KDF parameters for testing. // TestUseLowSecurityKDFParameters configures low-security KDF parameters for testing.
func TestUseLowSecurityKDFParameters(t logger) { func TestUseLowSecurityKDFParameters(t logger) {
t.Logf("using low-security KDF parameters for test") t.Logf("using low-security KDF parameters for test")
KDFParams = &testKDFParams Params = &testKDFParams
} }
// TestBackend returns a fully configured in-memory backend. // TestBackend returns a fully configured in-memory backend.