38 lines
726 B
Go
38 lines
726 B
Go
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package rnd
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import (
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"fmt"
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"hash/crc32"
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"strconv"
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)
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// CrcToken returns a string token with checksum.
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func CrcToken() string {
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token := make([]byte, 0, 14)
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token = append(token, []byte(GenerateToken(4))...)
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token = append(token, '-')
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token = append(token, []byte(GenerateToken(4))...)
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checksum := crc32.ChecksumIEEE(token)
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sum := strconv.FormatInt(int64(checksum), 16)
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return fmt.Sprintf("%s-%.4s", token, sum)
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}
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// ValidateCrcToken tests if the token string is valid.
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func ValidateCrcToken(s string) bool {
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if len(s) != 14 {
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return false
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}
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token := []byte(s[:9])
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checksum := crc32.ChecksumIEEE(token)
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sum := strconv.FormatInt(int64(checksum), 16)
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return s == fmt.Sprintf("%s-%.4s", token, sum)
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}
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