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Reduce bcrypt cost to 10

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This commit is contained in:
Philipp Heckel 2022-02-07 22:09:31 -05:00
parent a320093cb8
commit 344031b575
2 changed files with 12 additions and 10 deletions
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4
auth/auth_sqlite.go
View file

@ -10,8 +10,8 @@ import (
)
const (
bcryptCost = 11
intentionalSlowDownHash = "$2a$11$eX15DeF27FwAgXt9wqJF0uAUMz74XywJcGBH3kP93pzKYv6ATk2ka" // Cost should match bcryptCost
bcryptCost = 10
intentionalSlowDownHash = "$2a$10$YFCQvqQDwIIwnJM1xkAYOeih0dg17UVGanaTStnrSzC8NCWxcLDwy" // Cost should match bcryptCost
)
// Auther-related queries

18
auth/auth_sqlite_test.go
View file

@ -9,6 +9,8 @@ import (
"time"
)
const minBcryptTimingMillis = int64(50) // Ideally should be >100ms, but this should also run on a Raspberry Pi without massive resources
func TestSQLiteAuth_FullScenario_Default_DenyAll(t *testing.T) {
a := newTestAuth(t, false, false)
require.Nil(t, a.AddUser("phil", "phil", auth.RoleAdmin))
@ -24,14 +26,14 @@ func TestSQLiteAuth_FullScenario_Default_DenyAll(t *testing.T) {
phil, err := a.Authenticate("phil", "phil")
require.Nil(t, err)
require.Equal(t, "phil", phil.Name)
require.True(t, strings.HasPrefix(phil.Hash, "$2a$11$"))
require.True(t, strings.HasPrefix(phil.Hash, "$2a$10$"))
require.Equal(t, auth.RoleAdmin, phil.Role)
require.Equal(t, []auth.Grant{}, phil.Grants)
ben, err := a.Authenticate("ben", "ben")
require.Nil(t, err)
require.Equal(t, "ben", ben.Name)
require.True(t, strings.HasPrefix(ben.Hash, "$2a$11$"))
require.True(t, strings.HasPrefix(ben.Hash, "$2a$10$"))
require.Equal(t, auth.RoleUser, ben.Role)
require.Equal(t, []auth.Grant{
{"mytopic", true, true},
@ -92,7 +94,7 @@ func TestSQLiteAuth_AddUser_Timing(t *testing.T) {
a := newTestAuth(t, false, false)
start := time.Now().UnixMilli()
require.Nil(t, a.AddUser("user", "pass", auth.RoleAdmin))
require.GreaterOrEqual(t, time.Now().UnixMilli()-start, int64(100)) // Ideally should be > 200ms, but let's not make a brittle
require.GreaterOrEqual(t, time.Now().UnixMilli()-start, minBcryptTimingMillis)
}
func TestSQLiteAuth_Authenticate_Timing(t *testing.T) {
@ -103,19 +105,19 @@ func TestSQLiteAuth_Authenticate_Timing(t *testing.T) {
start := time.Now().UnixMilli()
_, err := a.Authenticate("user", "pass")
require.Nil(t, err)
require.GreaterOrEqual(t, time.Now().UnixMilli()-start, int64(100)) // Ideally should be > 200ms, but let's not make a brittle
require.GreaterOrEqual(t, time.Now().UnixMilli()-start, minBcryptTimingMillis)
// Timing an incorrect attempt
start = time.Now().UnixMilli()
_, err = a.Authenticate("user", "INCORRECT")
require.Equal(t, auth.ErrUnauthenticated, err)
require.GreaterOrEqual(t, time.Now().UnixMilli()-start, int64(100)) // Ideally should be > 200ms, but let's not make a brittle
require.GreaterOrEqual(t, time.Now().UnixMilli()-start, minBcryptTimingMillis)
// Timing a non-existing user attempt
start = time.Now().UnixMilli()
_, err = a.Authenticate("DOES-NOT-EXIST", "hithere")
require.Equal(t, auth.ErrUnauthenticated, err)
require.GreaterOrEqual(t, time.Now().UnixMilli()-start, int64(100)) // Ideally should be > 200ms, but let's not make a brittle
require.GreaterOrEqual(t, time.Now().UnixMilli()-start, minBcryptTimingMillis)
}
func TestSQLiteAuth_UserManagement(t *testing.T) {
@ -133,14 +135,14 @@ func TestSQLiteAuth_UserManagement(t *testing.T) {
phil, err := a.User("phil")
require.Nil(t, err)
require.Equal(t, "phil", phil.Name)
require.True(t, strings.HasPrefix(phil.Hash, "$2a$11$"))
require.True(t, strings.HasPrefix(phil.Hash, "$2a$10$"))
require.Equal(t, auth.RoleAdmin, phil.Role)
require.Equal(t, []auth.Grant{}, phil.Grants)
ben, err := a.User("ben")
require.Nil(t, err)
require.Equal(t, "ben", ben.Name)
require.True(t, strings.HasPrefix(ben.Hash, "$2a$11$"))
require.True(t, strings.HasPrefix(ben.Hash, "$2a$10$"))
require.Equal(t, auth.RoleUser, ben.Role)
require.Equal(t, []auth.Grant{
{"mytopic", true, true},