forked from TrueCloudLab/neoneo-go
67cbcac643
* Fix typos * revert chains/unit_testnet * revert chains * fix review comments (thx @AlexVanin)
45 lines
857 B
Go
45 lines
857 B
Go
package util
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import (
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"crypto/sha256"
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"math/rand"
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"time"
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"golang.org/x/crypto/ripemd160"
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)
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// RandomString returns a random string with the n as its length.
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func RandomString(n int) string {
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b := make([]byte, n)
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for i := range b {
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b[i] = byte(RandomInt(65, 90))
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}
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return string(b)
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}
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// RandomInt returns a random integer between min and max.
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func RandomInt(min, max int) int {
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return min + rand.Intn(max-min)
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}
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// RandomUint256 returns a random Uint256.
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func RandomUint256() Uint256 {
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str := RandomString(20)
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h := sha256.Sum256([]byte(str))
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return Uint256(h)
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}
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// RandomUint160 returns a random Uint160.
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func RandomUint160() Uint160 {
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str := RandomString(20)
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ripemd := ripemd160.New()
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ripemd.Write([]byte(str))
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h := ripemd.Sum(nil)
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v, _ := Uint160DecodeBytes(h)
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return v
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}
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func init() {
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rand.Seed(time.Now().UTC().UnixNano())
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}
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