19 lines
491 B
Go
19 lines
491 B
Go
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package helper
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import (
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"crypto/rand"
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"fmt"
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"math/big"
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)
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// GenerateRandomSerial generates a random serial number to be used in X.509 certificates. The implementation is
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// compliant to https://www.rfc-editor.org/rfc/rfc5280#section-4.1.2.2.
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func GenerateRandomSerial() (*big.Int, error) {
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serial, err := rand.Int(rand.Reader, new(big.Int).Lsh(big.NewInt(1), 160))
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if err != nil {
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return nil, fmt.Errorf("could not generate random serial number: %w", err)
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}
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return serial, nil
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}
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