28 lines
475 B
Go
28 lines
475 B
Go
package main
|
|
|
|
import (
|
|
"crypto/rand"
|
|
"fmt"
|
|
)
|
|
|
|
func main() {
|
|
var raw = make([]byte, 4)
|
|
rand.Read(raw)
|
|
fmt.Printf("raw = %02x%02x%02x%02x\n", raw[0], raw[1], raw[2], raw[3])
|
|
|
|
for i := 0; i < 4*8; i++ {
|
|
b := i / 8
|
|
o := byte(7 - i%8)
|
|
fmt.Printf("%02x b=%d, o=%d, r=%d\n", raw[b], b, o, raw[b]>>o)
|
|
}
|
|
for i := 0; i < 4*8; i++ {
|
|
b := i / 8
|
|
o := byte(7 - i%8)
|
|
if (raw[b]>>o)&0x01 == 0x01 {
|
|
fmt.Print("1")
|
|
} else {
|
|
fmt.Print("0")
|
|
}
|
|
}
|
|
fmt.Println("")
|
|
}
|