/
rand.go
54 lines (44 loc) · 1.06 KB
/
rand.go
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package crypto
import (
crand "crypto/rand"
"math/rand"
"time"
"github.com/ckeyer/commons/crypto/uuid"
)
const (
ALPHABET = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
ALPHANUM = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
ALPHASYM = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz~!@#$%^&*_+?-="
)
func init() {
rand.Seed(time.Now().UnixNano())
}
// RandomString 获取随机字符串
func RandomString(count int, set ...[]byte) string {
var sets []byte
var ret = make([]byte, count)
if len(set) == 0 {
sets = []byte(ALPHANUM)
setlen := len(ALPHANUM)
for i := 0; i < count; i++ {
ret[i] = sets[RandomInt(0, setlen-1)]
}
return string(ret)
}
return ""
}
// RandomBytes 获取随机字符
func RandomBytes(count int) []byte {
b := make([]byte, count)
crand.Read(b)
return b
}
func RandomInt(start, end int) int {
return rand.Intn(end-start+1) + start
}
func RandomInt64(start, end int64) int64 {
return rand.Int63n(end-start+1) + start
}
func RandomUUID() string {
return uuid.NewV4().String()
}