mirror of
https://github.com/rocky-linux/peridot.git
synced 2024-11-30 16:46:27 +00:00
129 lines
2.5 KiB
Go
129 lines
2.5 KiB
Go
package crypto
|
|
|
|
import (
|
|
"crypto/dsa" //nolint:staticcheck
|
|
"crypto/ecdsa"
|
|
"crypto/ed25519"
|
|
"crypto/rsa"
|
|
"errors"
|
|
"math/big"
|
|
|
|
"github.com/ProtonMail/go-crypto/openpgp/ecdh"
|
|
"github.com/ProtonMail/go-crypto/openpgp/elgamal"
|
|
)
|
|
|
|
func (sk *SessionKey) Clear() (ok bool) {
|
|
clearMem(sk.Key)
|
|
return true
|
|
}
|
|
|
|
func (key *Key) ClearPrivateParams() (ok bool) {
|
|
num := key.clearPrivateWithSubkeys()
|
|
key.entity.PrivateKey = nil
|
|
|
|
for k := range key.entity.Subkeys {
|
|
key.entity.Subkeys[k].PrivateKey = nil
|
|
}
|
|
|
|
return num > 0
|
|
}
|
|
|
|
func (key *Key) clearPrivateWithSubkeys() (num int) {
|
|
num = 0
|
|
if key.entity.PrivateKey != nil {
|
|
err := clearPrivateKey(key.entity.PrivateKey.PrivateKey)
|
|
if err == nil {
|
|
num++
|
|
}
|
|
}
|
|
for k := range key.entity.Subkeys {
|
|
if key.entity.Subkeys[k].PrivateKey != nil {
|
|
err := clearPrivateKey(key.entity.Subkeys[k].PrivateKey.PrivateKey)
|
|
if err == nil {
|
|
num++
|
|
}
|
|
}
|
|
}
|
|
return num
|
|
}
|
|
|
|
func clearPrivateKey(privateKey interface{}) error {
|
|
switch priv := privateKey.(type) {
|
|
case *rsa.PrivateKey:
|
|
return clearRSAPrivateKey(priv)
|
|
case *dsa.PrivateKey:
|
|
return clearDSAPrivateKey(priv)
|
|
case *elgamal.PrivateKey:
|
|
return clearElGamalPrivateKey(priv)
|
|
case *ecdsa.PrivateKey:
|
|
return clearECDSAPrivateKey(priv)
|
|
case *ed25519.PrivateKey:
|
|
return clearEdDSAPrivateKey(priv)
|
|
case *ecdh.PrivateKey:
|
|
return clearECDHPrivateKey(priv)
|
|
default:
|
|
return errors.New("gopenpgp: unknown private key")
|
|
}
|
|
}
|
|
|
|
func clearBigInt(n *big.Int) {
|
|
w := n.Bits()
|
|
for k := range w {
|
|
w[k] = 0x00
|
|
}
|
|
}
|
|
|
|
func clearMem(w []byte) {
|
|
for k := range w {
|
|
w[k] = 0x00
|
|
}
|
|
}
|
|
|
|
func clearRSAPrivateKey(rsaPriv *rsa.PrivateKey) error {
|
|
clearBigInt(rsaPriv.D)
|
|
for idx := range rsaPriv.Primes {
|
|
clearBigInt(rsaPriv.Primes[idx])
|
|
}
|
|
clearBigInt(rsaPriv.Precomputed.Qinv)
|
|
clearBigInt(rsaPriv.Precomputed.Dp)
|
|
clearBigInt(rsaPriv.Precomputed.Dq)
|
|
|
|
for idx := range rsaPriv.Precomputed.CRTValues {
|
|
clearBigInt(rsaPriv.Precomputed.CRTValues[idx].Exp)
|
|
clearBigInt(rsaPriv.Precomputed.CRTValues[idx].Coeff)
|
|
clearBigInt(rsaPriv.Precomputed.CRTValues[idx].R)
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func clearDSAPrivateKey(priv *dsa.PrivateKey) error {
|
|
clearBigInt(priv.X)
|
|
|
|
return nil
|
|
}
|
|
|
|
func clearElGamalPrivateKey(priv *elgamal.PrivateKey) error {
|
|
clearBigInt(priv.X)
|
|
|
|
return nil
|
|
}
|
|
|
|
func clearECDSAPrivateKey(priv *ecdsa.PrivateKey) error {
|
|
clearBigInt(priv.D)
|
|
|
|
return nil
|
|
}
|
|
|
|
func clearEdDSAPrivateKey(priv *ed25519.PrivateKey) error {
|
|
clearMem(*priv)
|
|
|
|
return nil
|
|
}
|
|
|
|
func clearECDHPrivateKey(priv *ecdh.PrivateKey) error {
|
|
clearMem(priv.D)
|
|
|
|
return nil
|
|
}
|