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25 lines
430 B
Go
25 lines
430 B
Go
package ethutil
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import (
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"crypto/rand"
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"encoding/binary"
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"io"
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)
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func randomUint64(r io.Reader) (uint64, error) {
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b := make([]byte, 8)
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n, err := r.Read(b)
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if n != len(b) {
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return 0, io.ErrShortBuffer
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}
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if err != nil {
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return 0, err
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}
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return binary.BigEndian.Uint64(b), nil
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}
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// RandomUint64 returns a cryptographically random uint64 value.
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func RandomUint64() (uint64, error) {
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return randomUint64(rand.Reader)
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}
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