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