| // Copyright 2009 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| package rsa |
| |
| import ( |
| "big" |
| "bytes" |
| "crypto" |
| "crypto/rand" |
| "crypto/sha1" |
| "encoding/base64" |
| "encoding/hex" |
| "io" |
| "testing" |
| "testing/quick" |
| ) |
| |
| func decodeBase64(in string) []byte { |
| out := make([]byte, base64.StdEncoding.DecodedLen(len(in))) |
| n, err := base64.StdEncoding.Decode(out, []byte(in)) |
| if err != nil { |
| return nil |
| } |
| return out[0:n] |
| } |
| |
| type DecryptPKCS1v15Test struct { |
| in, out string |
| } |
| |
| // These test vectors were generated with `openssl rsautl -pkcs -encrypt` |
| var decryptPKCS1v15Tests = []DecryptPKCS1v15Test{ |
| { |
| "gIcUIoVkD6ATMBk/u/nlCZCCWRKdkfjCgFdo35VpRXLduiKXhNz1XupLLzTXAybEq15juc+EgY5o0DHv/nt3yg==", |
| "x", |
| }, |
| { |
| "Y7TOCSqofGhkRb+jaVRLzK8xw2cSo1IVES19utzv6hwvx+M8kFsoWQm5DzBeJCZTCVDPkTpavUuEbgp8hnUGDw==", |
| "testing.", |
| }, |
| { |
| "arReP9DJtEVyV2Dg3dDp4c/PSk1O6lxkoJ8HcFupoRorBZG+7+1fDAwT1olNddFnQMjmkb8vxwmNMoTAT/BFjQ==", |
| "testing.\n", |
| }, |
| { |
| "WtaBXIoGC54+vH0NH0CHHE+dRDOsMc/6BrfFu2lEqcKL9+uDuWaf+Xj9mrbQCjjZcpQuX733zyok/jsnqe/Ftw==", |
| "01234567890123456789012345678901234567890123456789012", |
| }, |
| } |
| |
| func TestDecryptPKCS1v15(t *testing.T) { |
| for i, test := range decryptPKCS1v15Tests { |
| out, err := DecryptPKCS1v15(nil, rsaPrivateKey, decodeBase64(test.in)) |
| if err != nil { |
| t.Errorf("#%d error decrypting", i) |
| } |
| want := []byte(test.out) |
| if bytes.Compare(out, want) != 0 { |
| t.Errorf("#%d got:%#v want:%#v", i, out, want) |
| } |
| } |
| } |
| |
| func TestEncryptPKCS1v15(t *testing.T) { |
| random := rand.Reader |
| k := (rsaPrivateKey.N.BitLen() + 7) / 8 |
| |
| tryEncryptDecrypt := func(in []byte, blind bool) bool { |
| if len(in) > k-11 { |
| in = in[0 : k-11] |
| } |
| |
| ciphertext, err := EncryptPKCS1v15(random, &rsaPrivateKey.PublicKey, in) |
| if err != nil { |
| t.Errorf("error encrypting: %s", err) |
| return false |
| } |
| |
| var rand io.Reader |
| if !blind { |
| rand = nil |
| } else { |
| rand = random |
| } |
| plaintext, err := DecryptPKCS1v15(rand, rsaPrivateKey, ciphertext) |
| if err != nil { |
| t.Errorf("error decrypting: %s", err) |
| return false |
| } |
| |
| if bytes.Compare(plaintext, in) != 0 { |
| t.Errorf("output mismatch: %#v %#v", plaintext, in) |
| return false |
| } |
| return true |
| } |
| |
| config := new(quick.Config) |
| if testing.Short() { |
| config.MaxCount = 10 |
| } |
| quick.Check(tryEncryptDecrypt, config) |
| } |
| |
| // These test vectors were generated with `openssl rsautl -pkcs -encrypt` |
| var decryptPKCS1v15SessionKeyTests = []DecryptPKCS1v15Test{ |
| { |
| "e6ukkae6Gykq0fKzYwULpZehX+UPXYzMoB5mHQUDEiclRbOTqas4Y0E6nwns1BBpdvEJcilhl5zsox/6DtGsYg==", |
| "1234", |
| }, |
| { |
| "Dtis4uk/q/LQGGqGk97P59K03hkCIVFMEFZRgVWOAAhxgYpCRG0MX2adptt92l67IqMki6iVQyyt0TtX3IdtEw==", |
| "FAIL", |
| }, |
| { |
| "LIyFyCYCptPxrvTxpol8F3M7ZivlMsf53zs0vHRAv+rDIh2YsHS69ePMoPMe3TkOMZ3NupiL3takPxIs1sK+dw==", |
| "abcd", |
| }, |
| { |
| "bafnobel46bKy76JzqU/RIVOH0uAYvzUtauKmIidKgM0sMlvobYVAVQPeUQ/oTGjbIZ1v/6Gyi5AO4DtHruGdw==", |
| "FAIL", |
| }, |
| } |
| |
| func TestEncryptPKCS1v15SessionKey(t *testing.T) { |
| for i, test := range decryptPKCS1v15SessionKeyTests { |
| key := []byte("FAIL") |
| err := DecryptPKCS1v15SessionKey(nil, rsaPrivateKey, decodeBase64(test.in), key) |
| if err != nil { |
| t.Errorf("#%d error decrypting", i) |
| } |
| want := []byte(test.out) |
| if bytes.Compare(key, want) != 0 { |
| t.Errorf("#%d got:%#v want:%#v", i, key, want) |
| } |
| } |
| } |
| |
| func TestNonZeroRandomBytes(t *testing.T) { |
| random := rand.Reader |
| |
| b := make([]byte, 512) |
| err := nonZeroRandomBytes(b, random) |
| if err != nil { |
| t.Errorf("returned error: %s", err) |
| } |
| for _, b := range b { |
| if b == 0 { |
| t.Errorf("Zero octet found") |
| return |
| } |
| } |
| } |
| |
| type signPKCS1v15Test struct { |
| in, out string |
| } |
| |
| // These vectors have been tested with |
| // `openssl rsautl -verify -inkey pk -in signature | hexdump -C` |
| var signPKCS1v15Tests = []signPKCS1v15Test{ |
| {"Test.\n", "a4f3fa6ea93bcdd0c57be020c1193ecbfd6f200a3d95c409769b029578fa0e336ad9a347600e40d3ae823b8c7e6bad88cc07c1d54c3a1523cbbb6d58efc362ae"}, |
| } |
| |
| func TestSignPKCS1v15(t *testing.T) { |
| for i, test := range signPKCS1v15Tests { |
| h := sha1.New() |
| h.Write([]byte(test.in)) |
| digest := h.Sum() |
| |
| s, err := SignPKCS1v15(nil, rsaPrivateKey, crypto.SHA1, digest) |
| if err != nil { |
| t.Errorf("#%d %s", i, err) |
| } |
| |
| expected, _ := hex.DecodeString(test.out) |
| if bytes.Compare(s, expected) != 0 { |
| t.Errorf("#%d got: %x want: %x", i, s, expected) |
| } |
| } |
| } |
| |
| func TestVerifyPKCS1v15(t *testing.T) { |
| for i, test := range signPKCS1v15Tests { |
| h := sha1.New() |
| h.Write([]byte(test.in)) |
| digest := h.Sum() |
| |
| sig, _ := hex.DecodeString(test.out) |
| |
| err := VerifyPKCS1v15(&rsaPrivateKey.PublicKey, crypto.SHA1, digest, sig) |
| if err != nil { |
| t.Errorf("#%d %s", i, err) |
| } |
| } |
| } |
| |
| // In order to generate new test vectors you'll need the PEM form of this key: |
| // -----BEGIN RSA PRIVATE KEY----- |
| // MIIBOgIBAAJBALKZD0nEffqM1ACuak0bijtqE2QrI/KLADv7l3kK3ppMyCuLKoF0 |
| // fd7Ai2KW5ToIwzFofvJcS/STa6HA5gQenRUCAwEAAQJBAIq9amn00aS0h/CrjXqu |
| // /ThglAXJmZhOMPVn4eiu7/ROixi9sex436MaVeMqSNf7Ex9a8fRNfWss7Sqd9eWu |
| // RTUCIQDasvGASLqmjeffBNLTXV2A5g4t+kLVCpsEIZAycV5GswIhANEPLmax0ME/ |
| // EO+ZJ79TJKN5yiGBRsv5yvx5UiHxajEXAiAhAol5N4EUyq6I9w1rYdhPMGpLfk7A |
| // IU2snfRJ6Nq2CQIgFrPsWRCkV+gOYcajD17rEqmuLrdIRexpg8N1DOSXoJ8CIGlS |
| // tAboUGBxTDq3ZroNism3DaMIbKPyYrAqhKov1h5V |
| // -----END RSA PRIVATE KEY----- |
| |
| var rsaPrivateKey = &PrivateKey{ |
| PublicKey: PublicKey{ |
| N: fromBase10("9353930466774385905609975137998169297361893554149986716853295022578535724979677252958524466350471210367835187480748268864277464700638583474144061408845077"), |
| E: 65537, |
| }, |
| D: fromBase10("7266398431328116344057699379749222532279343923819063639497049039389899328538543087657733766554155839834519529439851673014800261285757759040931985506583861"), |
| Primes: []*big.Int{ |
| fromBase10("98920366548084643601728869055592650835572950932266967461790948584315647051443"), |
| fromBase10("94560208308847015747498523884063394671606671904944666360068158221458669711639"), |
| }, |
| } |