reliqarts/go-common

package common

import (
    "crypto/rand"
    mRand "math/rand"
    "time"
)

// RandomBytes generates a slice of [length] random bytes.
func RandomBytes(n int) ([]byte, error) {
    key := make([]byte, n)
    _, err := rand.Read(key)

    return key, err
}

// RandomString generates a random string of length n.
func RandomString(n int) string {
    var letters = []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789")

    s := make([]rune, n)
    for i := range s {
        mRand.New(mRand.NewSource(time.Now().UnixNano()))
        s[i] = letters[mRand.Intn(len(letters))]
    }

    return string(s)
}