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21 lines
474 B
Go
21 lines
474 B
Go
package utils
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import (
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"crypto/rand"
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)
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// RandomCreateBytes generate random []byte by specify chars.
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func RandomCreateBytes(n int, alphabets ...byte) []byte {
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const alphanum = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
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var bytes = make([]byte, n)
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rand.Read(bytes)
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for i, b := range bytes {
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if len(alphabets) == 0 {
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bytes[i] = alphanum[b%byte(len(alphanum))]
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} else {
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bytes[i] = alphabets[b%byte(len(alphabets))]
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}
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}
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return bytes
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}
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