vendor/src/github.com/Microsoft/hcsshim/guid.go

package hcsshim

import (
	"crypto/sha1"
	"fmt"
)

type GUID [16]byte

func NewGUID(source string) *GUID {
	h := sha1.Sum([]byte(source))
	var g GUID
	copy(g[0:], h[0:16])
	return &g
}

func (g *GUID) ToString() string {
	return fmt.Sprintf("%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x-%02x", g[3], g[2], g[1], g[0], g[5], g[4], g[7], g[6], g[8:10], g[10:])
}