30 lines
501 B
Go
30 lines
501 B
Go
package crypto
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import (
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"crypto/rand"
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"encoding/binary"
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"log"
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)
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// Source : https://programming.guide/go/crypto-rand-int.html
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type CryptoSource struct{}
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func NewCryptoSource() *CryptoSource {
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return &CryptoSource{}
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}
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func (s CryptoSource) Int63() int64 {
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return int64(s.Uint64() & ^uint64(1<<63))
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}
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func (s CryptoSource) Seed(seed int64) {}
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func (s CryptoSource) Uint64() (v uint64) {
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err := binary.Read(rand.Reader, binary.BigEndian, &v)
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if err != nil {
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log.Fatal(err)
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}
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return v
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}
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