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31 lines
730 B
Go
31 lines
730 B
Go
package secret
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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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// NewID generates a unique 128-bit random ID as a hex-encoded string.
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func NewID() (string, error) {
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if s, err := New(16); err != nil {
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return "", err
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} else {
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return s.String(), nil
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}
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}
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// RandomAlphaNumeric generates a random string of the specified length using the characters [a-z0-9].
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func RandomAlphaNumeric(length int) (string, error) {
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const charSet = "abcdefghijklmnopqrstuvwxyz0123456789"
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s := make([]byte, length)
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for i := range s {
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randIdx, err := rand.Int(rand.Reader, big.NewInt(int64(len(charSet))))
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if err != nil {
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return "", fmt.Errorf("get random number: %w", err)
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}
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s[i] = charSet[randIdx.Int64()]
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}
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return string(s), nil
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}
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