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rand.go
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rand.go
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/*
* Bitnami Kubernetes Production Runtime - A collection of services that makes it
* easy to run production workloads in Kubernetes.
*
* Copyright 2018-2019 Bitnami
*
* 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 tools
import (
"crypto/rand"
"encoding/base64"
)
// Base64RandBytes returns a base64 encoded string of `n` random
// bytes.
// NB: `n` is the number of bytes *before* base64 encoding. The
// returned string will be roughly 4/3 times longer, and includes
// trailing padding if `n` is not a multiple of 3.
func Base64RandBytes(n uint) (string, error) {
buf := make([]byte, n)
if _, err := rand.Read(buf); err != nil {
return "", err
}
return base64.StdEncoding.EncodeToString(buf), nil
}