ceremonyclient/node/keys/inmem.go

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2024-01-03 07:31:42 +00:00
package keys
import (
"crypto"
"crypto/rand"
"github.com/cloudflare/circl/sign/ed448"
"github.com/pkg/errors"
"source.quilibrium.com/quilibrium/monorepo/nekryptology/pkg/core/curves"
)
type InMemoryKeyManager struct {
key ByteString
store map[string]Key
}
func NewInMemoryKeyManager() *InMemoryKeyManager {
store := make(map[string]Key)
return &InMemoryKeyManager{
store: store,
}
}
// CreateSigningKey implements KeyManager
func (f *InMemoryKeyManager) CreateSigningKey(
id string,
keyType KeyType,
) (crypto.Signer, error) {
switch keyType {
case KeyTypeEd448:
pubkey, privkey, err := ed448.GenerateKey(rand.Reader)
if err != nil {
return nil, errors.Wrap(err, "could not generate key")
}
if err = f.save(
id,
Key{
Id: id,
Type: keyType,
PublicKey: ByteString(pubkey),
PrivateKey: ByteString(privkey),
},
); err != nil {
return nil, errors.Wrap(err, "could not save")
}
return privkey, nil
// case KeyTypePCAS:
// _, privkey, err := addressing.GenerateKey(rand.Reader)
// if err != nil {
// return nil, errors.Wrap(err, "could not generate key")
// }
// if err = f.save(id, privkey); err != nil {
// return nil, errors.Wrap(err, "could not save")
// }
// return privkey, nil
}
return nil, UnsupportedKeyTypeErr
}
// CreateAgreementKey implements KeyManager
func (f *InMemoryKeyManager) CreateAgreementKey(
id string,
keyType KeyType,
) (curves.Scalar, error) {
switch keyType {
case KeyTypeX448:
privkey := curves.ED448().Scalar.Random(rand.Reader)
pubkey := curves.ED448().NewGeneratorPoint().Mul(privkey)
if err := f.save(
id,
Key{
Id: id,
Type: KeyTypeX448,
PublicKey: pubkey.ToAffineCompressed(),
PrivateKey: privkey.Bytes(),
},
); err != nil {
return nil, errors.Wrap(err, "could not save")
}
return privkey, nil
}
return nil, UnsupportedKeyTypeErr
}
// GetAgreementKey implements KeyManager
func (f *InMemoryKeyManager) GetAgreementKey(id string) (curves.Scalar, error) {
key, err := f.read(id)
if err != nil {
return nil, err
}
switch key.Type {
case KeyTypeX448:
privkey, err := curves.ED448().NewScalar().SetBytes(key.PrivateKey)
return privkey, err
}
return nil, UnsupportedKeyTypeErr
}
// GetRawKey implements KeyManager
func (f *InMemoryKeyManager) GetRawKey(id string) (*Key, error) {
key, err := f.read(id)
return &key, err
}
// GetSigningKey implements KeyManager
func (f *InMemoryKeyManager) GetSigningKey(id string) (crypto.Signer, error) {
key, err := f.read(id)
if err != nil {
return nil, err
}
switch key.Type {
case KeyTypeEd448:
privkey := (ed448.PrivateKey)(key.PrivateKey)
return privkey, err
// case KeyTypePCAS:
// privkey := (addressing.PCAS)(key.PrivateKey)
// return privkey, err
}
return nil, UnsupportedKeyTypeErr
}
// PutRawKey implements KeyManager
func (f *InMemoryKeyManager) PutRawKey(key *Key) error {
return f.save(key.Id, *key)
}
// DeleteKey implements KeyManager
func (f *InMemoryKeyManager) DeleteKey(id string) error {
delete(f.store, id)
return nil
}
// GetKey implements KeyManager
func (f *InMemoryKeyManager) GetKey(id string) (key *Key, err error) {
storeKey, err := f.read(id)
if err != nil {
return nil, err
}
return &storeKey, nil
}
// ListKeys implements KeyManager
func (f *InMemoryKeyManager) ListKeys() ([]*Key, error) {
keys := []*Key{}
for k := range f.store {
storeKey, err := f.read(k)
if err != nil {
return nil, err
}
keys = append(keys, &storeKey)
}
return keys, nil
}
var _ KeyManager = (*InMemoryKeyManager)(nil)
func (f *InMemoryKeyManager) save(id string, key Key) error {
f.store[id] = Key{
Id: key.Id,
Type: key.Type,
PublicKey: key.PublicKey,
PrivateKey: key.PrivateKey,
}
return nil
}
func (f *InMemoryKeyManager) read(id string) (Key, error) {
k, ok := f.store[id]
if !ok {
return Key{}, KeyNotFoundErr
}
return Key{
Id: k.Id,
Type: k.Type,
PublicKey: k.PublicKey,
PrivateKey: k.PrivateKey,
}, nil
}