tricrypt/security/store.go

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2024-05-01 16:21:22 +02:00
package security
import (
"crypto/rand"
"fmt"
"git.qowevisa.me/Qowevisa/gotell/errors"
"git.qowevisa.me/Qowevisa/gotell/types"
"golang.org/x/crypto/curve25519"
)
func generateKeyPair(cfg types.ECDHConfig) ([]byte, []byte, error) {
var private [32]byte
if _, err := rand.Read(private[:]); err != nil {
return nil, nil, errors.WrapErr("rand.Read", err)
}
public, err := curve25519.X25519(private[:], curve25519.Basepoint)
if err != nil {
return nil, nil, errors.WrapErr("curve25519.X25519", err)
}
return private[:], public, nil
}
type KeyPair struct {
baseName string
privateKey []byte
publicKey []byte
}
type Store struct {
Pairs map[string]KeyPair
}
func InitStorage() (*Store, error) {
err := initFS()
if err != nil {
return nil, errors.WrapErr("initFS", err)
}
var newStore Store
newStore.Pairs = make(map[string]KeyPair)
return &newStore, nil
}
func (s *Store) AddNewPair(name string, ecdhCfg types.ECDHConfig) error {
_, exists := s.Pairs[name]
if exists {
return errors.WrapErr(fmt.Sprintf("Store.Pairs[%s]", name), errors.ALREADY_SET)
}
fileExists, err := fs_checkIfPairExists(name)
if fileExists {
return errors.WrapErr(fmt.Sprintf("Store.Pairs[%s]. FS found but in store", name), errors.NOT_SET)
}
if err != nil {
return errors.WrapErr("fs_checkIfPairExists", err)
}
private, public, err := generateKeyPair(ecdhCfg)
if err != nil {
return errors.WrapErr("generateKeyPair", err)
}
s.Pairs[name] = KeyPair{
baseName: name,
privateKey: private,
publicKey: public,
}
return nil
}