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random.go
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/
random.go
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/*
Copyright 2023 k0s authors
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package util
import "crypto/rand"
var letters = "abcdefghijklmnopqrstuvwxyz0123456789"
// RandomString generates a random string with given length
func RandomString(length int) string {
bytes := make([]byte, length)
if _, err := rand.Read(bytes); err != nil {
// Not much we can do on broken system
panic("random is broken: " + err.Error())
}
for i, b := range bytes {
bytes[i] = letters[b%byte(len(letters))]
}
return string(bytes)
}