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Added FriendlyID() ID generator for human-friendly IDs

master
Gisle Aune 7 years ago
parent
commit
95eae1f797
  1. 22
      generate/id.go

22
generate/id.go

@ -19,6 +19,28 @@ func ID() string {
return strings.ToLower(hex.EncodeToString(bytes))
}
// FriendlyID generates a human-friendly ID that has a higher uniqueness,
// and a limited alphabet designed for human readability and manual copying.
//
// There are 7.98e+22 IDs in a 16-length ID, which means that if there are
// 10,000 items, you're as likely to guess one as winning the grand prize
// of the biggest lotteries around the world billions of times in a row.
func FriendlyID(length int) string {
const alphabet = "0123456789abcdfghjkmpqrtvxy"
const alphabetLength = byte(len(alphabet))
// Generate random bytes
results := make([]byte, length)
rand.Read(results)
// Truncate it within the alphabet
for i := 0; i < 16; i++ {
results[i] = alphabet[results[i]%alphabetLength]
}
return string(results)
}
// SessionID generates a 48 character hex string with crypto/rand
func SessionID() string {
bytes := make([]byte, 24)

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