passforios-gopenpgp/crypto/time.go
wussler 54f45d0471
Openpgp security update (V2) (#31)
* Change keyring unlock functionalities

* Add keyring#Lock, keyring#CheckIntegrity, tests

* Update helpers, fix bugs

* Update go.mod with ProtonMail/crypto commit

* Change key management system

* Clear keys from memory + tests

* Create SessionKey with direct encryption for datapackets. Move symmetrickey to password.

* Fix upstream dependencies

* Update module to V2, documentation

* Add linter

* Add v2 folder to .gitignore

* Minor changes to KeyID getters

* Remove old changelog

* Improve docs, remove compilation script
2019-12-27 19:35:43 +01:00

49 lines
1,021 B
Go

package crypto
import (
"errors"
"time"
)
// UpdateTime updates cached time
func UpdateTime(newTime int64) {
pgp.latestServerTime = newTime
pgp.latestClientTime = time.Now()
}
// GetUnixTime gets latest cached time
func GetUnixTime() int64 {
return getNow().Unix()
}
// GetTime gets latest cached time
func GetTime() time.Time {
return getNow()
}
// ----- INTERNAL FUNCTIONS -----
// getNow returns current time
func getNow() time.Time {
extrapolate, err := getDiff()
if err != nil {
return time.Now()
}
return time.Unix(pgp.latestServerTime+extrapolate, 0)
}
func getDiff() (int64, error) {
if pgp.latestServerTime > 0 && !pgp.latestClientTime.IsZero() {
// Since is monotonic, it uses a monotonic clock in this case instead of the wall clock
return int64(time.Since(pgp.latestClientTime).Seconds()), nil
}
return 0, errors.New("gopenpgp: latest server time not available")
}
// getTimeGenerator Returns a time generator function
func getTimeGenerator() func() time.Time {
return getNow
}