16 lines
287 B
Go
16 lines
287 B
Go
|
package peer
|
||
|
|
|
||
|
|
import (
|
||
|
|
"crypto/sha256"
|
||
|
|
)
|
||
|
|
|
||
|
|
// DoubleSha256 calculates sha256(sha256(b)) and returns the resulting bytes.
|
||
|
|
func DoubleSha256(b []byte) []byte {
|
||
|
|
hasher := sha256.New()
|
||
|
|
hasher.Write(b)
|
||
|
|
sum := hasher.Sum(nil)
|
||
|
|
hasher.Reset()
|
||
|
|
hasher.Write(sum)
|
||
|
|
return hasher.Sum(nil)
|
||
|
|
}
|