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/**
* Copyright 2014 Paul Querna
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package hotp
import (
"github.com/pquerna/otp"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"encoding/base32"
"testing"
)
type tc struct {
Counter uint64
TOTP string
Mode otp.Algorithm
Secret string
}
var (
secSha1 = base32.StdEncoding.EncodeToString([]byte("12345678901234567890"))
rfcMatrixTCs = []tc{
{0, "755224", otp.AlgorithmSHA1, secSha1},
{1, "287082", otp.AlgorithmSHA1, secSha1},
{2, "359152", otp.AlgorithmSHA1, secSha1},
{3, "969429", otp.AlgorithmSHA1, secSha1},
{4, "338314", otp.AlgorithmSHA1, secSha1},
{5, "254676", otp.AlgorithmSHA1, secSha1},
{6, "287922", otp.AlgorithmSHA1, secSha1},
{7, "162583", otp.AlgorithmSHA1, secSha1},
{8, "399871", otp.AlgorithmSHA1, secSha1},
{9, "520489", otp.AlgorithmSHA1, secSha1},
}
)
// Test values from http://tools.ietf.org/html/rfc4226#appendix-D
func TestValidateRFCMatrix(t *testing.T) {
for _, tx := range rfcMatrixTCs {
valid, err := ValidateCustom(tx.TOTP, tx.Counter, tx.Secret,
ValidateOpts{
Digits: otp.DigitsSix,
Algorithm: tx.Mode,
})
require.NoError(t, err,
"unexpected error totp=%s mode=%v counter=%v", tx.TOTP, tx.Mode, tx.Counter)
require.True(t, valid,
"unexpected totp failure totp=%s mode=%v counter=%v", tx.TOTP, tx.Mode, tx.Counter)
}
}
func TestGenerateRFCMatrix(t *testing.T) {
for _, tx := range rfcMatrixTCs {
passcode, err := GenerateCodeCustom(tx.Secret, tx.Counter,
ValidateOpts{
Digits: otp.DigitsSix,
Algorithm: tx.Mode,
})
assert.Nil(t, err)
assert.Equal(t, tx.TOTP, passcode)
}
}
func TestValidateInvalid(t *testing.T) {
secSha1 := base32.StdEncoding.EncodeToString([]byte("12345678901234567890"))
valid, err := ValidateCustom("foo", 11, secSha1,
ValidateOpts{
Digits: otp.DigitsSix,
Algorithm: otp.AlgorithmSHA1,
})
require.Equal(t, otp.ErrValidateInputInvalidLength, err, "Expected Invalid length error.")
require.Equal(t, false, valid, "Valid should be false when we have an error.")
valid, err = ValidateCustom("foo", 11, secSha1,
ValidateOpts{
Digits: otp.DigitsEight,
Algorithm: otp.AlgorithmSHA1,
})
require.Equal(t, otp.ErrValidateInputInvalidLength, err, "Expected Invalid length error.")
require.Equal(t, false, valid, "Valid should be false when we have an error.")
valid, err = ValidateCustom("000000", 11, secSha1,
ValidateOpts{
Digits: otp.DigitsSix,
Algorithm: otp.AlgorithmSHA1,
})
require.NoError(t, err, "Expected no error.")
require.Equal(t, false, valid, "Valid should be false.")
valid = Validate("000000", 11, secSha1)
require.Equal(t, false, valid, "Valid should be false.")
}
// This tests for issue #10 - secrets without padding
func TestValidatePadding(t *testing.T) {
valid, err := ValidateCustom("831097", 0, "JBSWY3DPEHPK3PX",
ValidateOpts{
Digits: otp.DigitsSix,
Algorithm: otp.AlgorithmSHA1,
})
require.NoError(t, err, "Expected no error.")
require.Equal(t, true, valid, "Valid should be true.")
}
func TestGenerate(t *testing.T) {
k, err := Generate(GenerateOpts{
Issuer: "SnakeOil",
AccountName: "alice@example.com",
})
require.NoError(t, err, "generate basic TOTP")
require.Equal(t, "SnakeOil", k.Issuer(), "Extracting Issuer")
require.Equal(t, "alice@example.com", k.AccountName(), "Extracting Account Name")
require.Equal(t, 16, len(k.Secret()), "Secret is 16 bytes long as base32.")
k, err = Generate(GenerateOpts{
Issuer: "SnakeOil",
AccountName: "alice@example.com",
SecretSize: 20,
})
require.NoError(t, err, "generate larger TOTP")
require.Equal(t, 32, len(k.Secret()), "Secret is 32 bytes long as base32.")
k, err = Generate(GenerateOpts{
Issuer: "",
AccountName: "alice@example.com",
})
require.Equal(t, otp.ErrGenerateMissingIssuer, err, "generate missing issuer")
require.Nil(t, k, "key should be nil on error.")
k, err = Generate(GenerateOpts{
Issuer: "Foobar, Inc",
AccountName: "",
})
require.Equal(t, otp.ErrGenerateMissingAccountName, err, "generate missing account name.")
require.Nil(t, k, "key should be nil on error.")
k, err = Generate(GenerateOpts{
Issuer: "SnakeOil",
AccountName: "alice@example.com",
SecretSize: 17, // anything that is not divisable by 5, really
})
require.NoError(t, err, "Secret size is valid when length not divisable by 5.")
require.NotContains(t, k.Secret(), "=", "Secret has no escaped characters.")
}
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