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Replace math/rand usage with crypto/rand #39

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Replace math/rand usage with crypto/rand #39

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18 changes: 11 additions & 7 deletions random/random.go
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Original file line number Diff line number Diff line change
@@ -1,9 +1,9 @@
package random

import (
"math/rand"
"bufio"
"crypto/rand"
"strings"
"time"
)

type (
Expand All @@ -27,7 +27,6 @@ var (
)

func New() *Random {
rand.Seed(time.Now().UnixNano())
return new(Random)
}

Expand All @@ -36,11 +35,16 @@ func (r *Random) String(length uint8, charsets ...string) string {
if charset == "" {
charset = Alphanumeric
}
b := make([]byte, length)
for i := range b {
b[i] = charset[rand.Int63()%int64(len(charset))]
reader := bufio.NewReaderSize(rand.Reader, int(length))
buf := make([]byte, length)
for i := range buf {
b, err := reader.ReadByte()
if err != nil {
panic(err)
}
buf[i] = charset[int(b)%len(charset)]
}
return string(b)
return string(buf)
}

func String(length uint8, charsets ...string) string {
Expand Down