mirror of
https://github.com/Luzifer/password.git
synced 2024-11-09 09:50:07 +00:00
Initial running version
This commit is contained in:
commit
8896698ac2
4 changed files with 344 additions and 0 deletions
1
.gitignore
vendored
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1
.gitignore
vendored
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password
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121
lib/generator.go
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121
lib/generator.go
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package securepassword // import "github.com/Luzifer/password/lib"
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import (
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"fmt"
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"math/rand"
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"regexp"
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"strings"
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"time"
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)
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type SecurePassword struct {
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characterTables map[string]string
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insecurePattern []string
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badCharacters []string
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}
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func NewSecurePassword() *SecurePassword {
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return &SecurePassword{
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characterTables: map[string]string{
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"numeric": "0123456789",
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"simple": "abcdefghijklmnopqrstuvwxyz",
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"special": "!#$%&()*+,-_./:;=?@[]^{}~|",
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},
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insecurePattern: []string{
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"abcdefghijklmnopqrstuvwxyz", // Alphabet
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"zyxwvutsrqponmlkjihgfedcba", // Alphabet reversed
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"01234567890", // Numeric increasing
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"09876543210", // Numeric decreasing
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"qwertzuiopasdfghjklyxcvbnm", // German keyboard layout
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"mnbvcxylkjhgfdsapoiuztrewq", // German keyboard layout reversed
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"qwertyuiopasdfghjklzxcvbnm", // US keyboard layout
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"mnbvcxzlkjhgfdsapoiuytrewq", // US keyboard layour reversed
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"789_456_123_147_258_369_159_753", // Numpad patterns
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},
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badCharacters: []string{"I", "l", "0", "O", "B", "8"}, // Characters that could lead to confusion due to font
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}
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}
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func (s *SecurePassword) GeneratePassword(length int, special bool) string {
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characterTable := strings.Join([]string{
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s.characterTables["simple"],
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strings.ToUpper(s.characterTables["simple"]),
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s.characterTables["numeric"],
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}, "")
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if special {
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characterTable = strings.Join([]string{characterTable, s.characterTables["special"]}, "")
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}
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password := ""
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rand.Seed(time.Now().UnixNano())
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for {
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password = fmt.Sprintf("%s%s",
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password,
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string(characterTable[rand.Intn(len(characterTable))]),
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)
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if len(password) == length {
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if s.CheckPasswordSecurity(password, special) {
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break
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}
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password = ""
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}
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}
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return password
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}
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func (s *SecurePassword) CheckPasswordSecurity(password string, needsSpecialCharacters bool) bool {
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return !s.hasInsecurePattern(password) &&
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s.matchesBasicSecurity(password, needsSpecialCharacters) &&
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!s.hasCharacterRepetition(password)
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}
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func (s *SecurePassword) hasInsecurePattern(password string) bool {
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for i := 0; i < len(password)-3; i++ {
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slice := password[i : i+3] // Extract an 3 char slice to check
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for _, pattern := range s.insecurePattern {
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if strings.Contains(pattern, slice) {
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return true
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}
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if strings.Contains(strings.ToUpper(pattern), slice) {
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return true
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}
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}
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}
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return false
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}
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func (s *SecurePassword) matchesBasicSecurity(password string, needsSpecialCharacters bool) bool {
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bytePassword := []byte(password)
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// Passwords does require numeric characters
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if !regexp.MustCompile(`[0-9]`).Match(bytePassword) {
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return false
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}
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// Passwords does require lowercase alphabetical characters
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if !regexp.MustCompile(`[a-z]`).Match(bytePassword) {
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return false
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}
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// Passwords does require uppercase alphabetical characters
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if !regexp.MustCompile(`[A-Z]`).Match(bytePassword) {
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return false
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}
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// If request was to require special characters check for their existance
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if needsSpecialCharacters && !regexp.MustCompile(`[^a-zA-Z0-9]`).Match(bytePassword) {
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return false
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}
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return true
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}
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func (s *SecurePassword) hasCharacterRepetition(password string) bool {
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for i := 1; i < len(password); i++ {
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if password[i-1] == password[i] {
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return true
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}
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}
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return false
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}
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136
lib/generator_test.go
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136
lib/generator_test.go
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package securepassword
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import "testing"
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func TestInsecurePasswords(t *testing.T) {
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passwords := map[string]string{
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"8452028337962356": "Password with only numeric characters was accepted.",
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"adfgjadrgdagasdf": "Password with only lowercase characters was accepted.",
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"ASEFSTDHQAEGFADF": "Password with only uppercase characters was accepted.",
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"135fach74nc94bd6": "Password without uppercase characters was accepted.",
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"235JGOA0YTVKS46S": "Password without lowercase characters was accepted.",
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"cKTn5mQXfasdS6qy": "Password with pattern asd was accepted.",
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"cKTn5mQXfdsaS6qy": "Password with pattern dsa was accepted.",
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"cKTn5mQXf345S6qy": "Password with pattern 345 was accepted.",
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"cKTn5mQXf987S6qy": "Password with pattern 987 was accepted.",
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"cKTn5mQXfabcS6qy": "Password with pattern abc was accepted.",
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"cKTn5mQXfcbaS6qy": "Password with pattern cba was accepted.",
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"cKTn5mQXfABCS6qy": "Password with pattern ABC was accepted.",
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"cKTn5mQXfONMS6qy": "Password with pattern ONM was accepted.",
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"Gncj5zzK29Dvx92h": "Password with character repetition was accepted",
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"Gncj5%%K29Dvx92h": "Password with character repetition was accepted",
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"Gncj55%K29Dvx92h": "Password with character repetition was accepted",
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}
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for password, errorMessage := range passwords {
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if NewSecurePassword().CheckPasswordSecurity(password, false) {
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t.Error(errorMessage)
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}
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}
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}
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func TestSecurePasswords(t *testing.T) {
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passwords := []string{
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"6e1GZ6V2empWAky5Z13a",
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"DLHZA2zfWor1XUoJYvFR",
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"sMf3uNf2E1pxPFMymah5",
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"prb4tX1vtyVL7R316dKU",
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"7bWc9C1ciL62h5u26Z9g",
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}
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for _, password := range passwords {
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if !NewSecurePassword().CheckPasswordSecurity(password, false) {
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t.Errorf("Password was rejected: %s", password)
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}
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}
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}
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func TestPasswordWithoutSpecialCharaterFail(t *testing.T) {
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passwords := []string{
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"6e1GZ6V2empWAky5Z13a",
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"DLHZA2zfWor1XUoJYvFR",
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"sMf3uNf2E1pxPFMymah5",
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"prb4tX1vtyVL7R316dKU",
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"7bWc9C1ciL62h5u26Z9g",
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}
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for _, password := range passwords {
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if NewSecurePassword().CheckPasswordSecurity(password, true) {
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t.Errorf("Password was accepted: %s", password)
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}
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}
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}
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func TestSecurePasswordWithSpecialCharacter(t *testing.T) {
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passwords := []string{
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`a*5S(+zQ9=<J~bH}!F])`,
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`9?)k1Ge?[F}5w{#$Ho(6`,
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`LRrot)%qVH!>3%/1MiNr`,
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`/K}.]C4-a/{,39r$"(D+`,
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`9dk#:@xjPd_m$:F"}>Cj`,
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}
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for _, password := range passwords {
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if !NewSecurePassword().CheckPasswordSecurity(password, true) {
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t.Errorf("Password was rejected: %s", password)
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}
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}
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}
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func BenchmarkGeneratePasswords8Char(b *testing.B) {
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pwd := NewSecurePassword()
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for i := 0; i < b.N; i++ {
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pwd.GeneratePassword(8, false)
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}
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}
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func BenchmarkGeneratePasswords8CharSpecial(b *testing.B) {
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pwd := NewSecurePassword()
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for i := 0; i < b.N; i++ {
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pwd.GeneratePassword(8, true)
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}
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}
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func BenchmarkGeneratePasswords16Char(b *testing.B) {
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pwd := NewSecurePassword()
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for i := 0; i < b.N; i++ {
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pwd.GeneratePassword(16, false)
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}
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}
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func BenchmarkGeneratePasswords16CharSpecial(b *testing.B) {
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pwd := NewSecurePassword()
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for i := 0; i < b.N; i++ {
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pwd.GeneratePassword(16, true)
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}
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}
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func BenchmarkGeneratePasswords32Char(b *testing.B) {
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pwd := NewSecurePassword()
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for i := 0; i < b.N; i++ {
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pwd.GeneratePassword(32, false)
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}
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}
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func BenchmarkGeneratePasswords32CharSpecial(b *testing.B) {
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pwd := NewSecurePassword()
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for i := 0; i < b.N; i++ {
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pwd.GeneratePassword(32, true)
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}
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}
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func BenchmarkGeneratePasswords128Char(b *testing.B) {
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pwd := NewSecurePassword()
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for i := 0; i < b.N; i++ {
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pwd.GeneratePassword(128, false)
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}
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}
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func BenchmarkGeneratePasswords128CharSpecial(b *testing.B) {
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pwd := NewSecurePassword()
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for i := 0; i < b.N; i++ {
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pwd.GeneratePassword(128, true)
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}
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}
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86
main.go
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86
main.go
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package main
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import (
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"fmt"
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"net/http"
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"os"
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"strconv"
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"github.com/Luzifer/password/lib"
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"github.com/codegangsta/cli"
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"github.com/gorilla/mux"
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)
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var pwd *securepassword.SecurePassword
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func init() {
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pwd = securepassword.NewSecurePassword()
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}
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func main() {
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app := cli.NewApp()
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app.Usage = "generates secure random passwords"
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app.Version = "1.0.0"
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app.Commands = []cli.Command{
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{
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Name: "serve",
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Usage: "start an API server to request passwords",
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Action: startAPIServer,
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Flags: []cli.Flag{
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cli.IntFlag{
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Name: "port",
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Value: 3000,
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Usage: "port to listen on",
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},
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},
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},
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{
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Name: "get",
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Usage: "generate and return a secure random password",
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Action: printPassword,
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Flags: []cli.Flag{
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cli.IntFlag{
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Name: "length, l",
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Value: 20,
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Usage: "length of the generated password",
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},
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cli.BoolFlag{
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Name: "special, s",
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Usage: "use special characters in your password",
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},
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},
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},
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}
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app.Run(os.Args)
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}
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func startAPIServer(c *cli.Context) {
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r := mux.NewRouter()
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r.HandleFunc("/v1/getPassword", handleAPIGetPasswordv1).Methods("GET")
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http.Handle("/", r)
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http.ListenAndServe(fmt.Sprintf(":%d", c.Int("port")), nil)
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}
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func printPassword(c *cli.Context) {
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fmt.Println(pwd.GeneratePassword(c.Int("length"), c.Bool("special")))
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}
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func handleAPIGetPasswordv1(res http.ResponseWriter, r *http.Request) {
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length, err := strconv.Atoi(r.URL.Query().Get("length"))
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if err != nil {
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length = 20
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}
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special := r.URL.Query().Get("special") == "true"
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if length > 128 {
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http.Error(res, "Please do not use length with more than 128 characters!", http.StatusNotAcceptable)
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return
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}
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res.Header().Add("Content-Type", "text/plain")
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res.Header().Add("Cache-Control", "no-cache")
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res.Write([]byte(pwd.GeneratePassword(length, special)))
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}
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