mirror of https://github.com/ergochat/ergo.git
42 lines
758 B
Go
42 lines
758 B
Go
// Copyright (c) 2015 Kohei YOSHIDA. All rights reserved.
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// This software is licensed under the 3-Clause BSD License
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// that can be found in LICENSE file.
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package internal
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const (
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cleanBytesLen = 64
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)
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var (
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cleanBytes = make([]byte, cleanBytesLen)
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)
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func CleanSensitiveData(b []byte) {
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l := len(b)
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for ; l > cleanBytesLen; l -= cleanBytesLen {
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copy(b[l-cleanBytesLen:l], cleanBytes)
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}
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if l > 0 {
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copy(b[0:l], cleanBytes[0:l])
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}
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}
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func RepeatByteSequence(input []byte, length int) []byte {
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var (
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sequence = make([]byte, length)
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unit = len(input)
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)
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j := length / unit * unit
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for i := 0; i < j; i += unit {
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copy(sequence[i:length], input)
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}
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if j < length {
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copy(sequence[j:length], input[0:length-j])
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}
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return sequence
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}
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