32 lines
935 B
Go
32 lines
935 B
Go
// Copyright 2017 PingCAP, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package util
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import (
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"math/rand"
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)
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// RandomBuf generates a random string using ASCII characters but avoid separator character.
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// See https://github.com/mysql/mysql-server/blob/5.7/mysys_ssl/crypt_genhash_impl.cc#L435
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func RandomBuf(size int) []byte {
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buf := make([]byte, size)
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for i := 0; i < size; i++ {
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buf[i] = byte(rand.Intn(127))
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if buf[i] == 0 || buf[i] == byte('$') {
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buf[i]++
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}
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}
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return buf
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}
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