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52 lines
843 B
Go
52 lines
843 B
Go
package certs
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import (
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"bytes"
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"crypto/md5"
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"encoding/hex"
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"math/rand"
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)
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const (
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allowedChars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
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allowedCharsSize = len(allowedChars)
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)
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// returns a securely generated random string.
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func randomString(length int) string {
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b := make([]byte, length)
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for i := range b {
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c := rand.Intn(allowedCharsSize)
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b[i] = allowedChars[c]
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}
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return string(b)
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}
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func mmd5(str string) string {
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var buf = bytes.NewBufferString(str)
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hash := md5.New()
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hash.Write(buf.Bytes())
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sign := hash.Sum(nil)
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return hex.EncodeToString(sign)
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}
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func checkHeaderSign(header map[string]interface{}) (slt, sin string, ok bool) {
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salt, ok := header[saltKey]
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if !ok {
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return
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}
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sign, ok := header[signKey]
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if !ok {
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return
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}
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slt, sin = salt.(string), sign.(string)
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return
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}
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