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password/lib/helpers.go

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Go
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package securepassword
import (
"crypto/rand"
"fmt"
"math/big"
)
func randIntn(max int) (int, error) {
cidx, err := rand.Int(rand.Reader, big.NewInt(int64(max)))
if err != nil {
return 0, fmt.Errorf("generating random number: %w", err)
}
return int(cidx.Int64()), nil
}