package uid import ( "crypto/rand" "encoding/hex" "io" ) // uid returns a unique id. These ids consist of 128 bits from a // cryptographically strong pseudo-random generator and are like uuids, but // without the dashes and significant bits. // // See: http://en.wikipedia.org/wiki/UUID#Random_UUID_probability_of_duplicates func Uid() string { id := make([]byte, 16) _, err := io.ReadFull(rand.Reader, id) if err != nil { // This is probably an appropiate way to handle errors from our source // for random bits. panic(err) } return hex.EncodeToString(id) }