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[#1255] node/session: Rename constant

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Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>
This commit is contained in:
Pavel Karpy 2022-03-27 18:55:24 +03:00 committed by Alex Vanin
parent 90a8c52bdb
commit 6ec104d686
2 changed files with 6 additions and 17 deletions
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17
pkg/services/session/storage/persistent/storage.go
View file

@ -3,7 +3,6 @@ package persistent
import (
"crypto/aes"
"crypto/cipher"
"crypto/x509"
"encoding/hex"
"fmt"
@ -62,20 +61,10 @@ func NewTokenStore(path string, opts ...Option) (*TokenStore, error) {
// enable encryption if it
// was configured so
if cfg.privateKey != nil {
rawKey, err := x509.MarshalECPrivateKey(cfg.privateKey)
if err != nil {
return nil, fmt.Errorf("could not marshal provided private key: %w", err)
}
rawKey := make([]byte, (cfg.privateKey.Curve.Params().N.BitLen()+7)/8)
cfg.privateKey.D.FillBytes(rawKey)
// tagOffset is a constant offset for
// tags when marshalling ECDSA key in
// ASN.1 DER form
const tagOffset = 7
// using first 32 bytes from
// the marshalled private key
// as a secret
c, err := aes.NewCipher(rawKey[tagOffset : tagOffset+32])
c, err := aes.NewCipher(rawKey)
if err != nil {
return nil, fmt.Errorf("could not create cipher block: %w", err)
}

6
pkg/services/session/storage/persistent/util.go
View file

@ -10,7 +10,7 @@ import (
"go.etcd.io/bbolt"
)
const expOffset = 8
const keyOffset = 8
func (s *TokenStore) packToken(exp uint64, key *ecdsa.PrivateKey) ([]byte, error) {
rawKey, err := x509.MarshalECPrivateKey(key)
@ -25,7 +25,7 @@ func (s *TokenStore) packToken(exp uint64, key *ecdsa.PrivateKey) ([]byte, error
}
}
res := make([]byte, expOffset, expOffset+len(rawKey))
res := make([]byte, keyOffset, keyOffset+len(rawKey))
binary.LittleEndian.PutUint64(res, exp)
res = append(res, rawKey...)
@ -37,7 +37,7 @@ func (s *TokenStore) unpackToken(raw []byte) (*storage.PrivateToken, error) {
var err error
epoch := epochFromToken(raw)
rawKey := raw[expOffset:]
rawKey := raw[keyOffset:]
if s.gcm != nil {
rawKey, err = s.decrypt(rawKey)