tokengen is small, simple and flexible token generator. tokengen allows you to specify your character set and token length, and as such is ideally suited for generating secure tokens in any language, random urls, passwords, and access tokens.
tokengen relies on the crypto/rand package, mapping values evenly to the character set
given, disregarding any values out of range.
func GenerateOneTimePassword() (string, error){
tokengen, err := tokengen.New(tokengen.DefaultCharset, 40)
if err != nil {
return tokengen, err
}
return tokengen.GenerateToken()
}Please make sure that the character set and length of token you choose are large enough to ensure a reasonable amount of entropy.