From 6db4433778f422bbd0887b203d4fd9fc1d2ee4ff Mon Sep 17 00:00:00 2001
From: Jeff Wendling <jeff@influxdata.com>
Date: Thu, 13 Sep 2018 16:39:11 -0600
Subject: [PATCH] remove dependency on golang.org/x/crypto in md4 tests

---
 md4_test.go | 88 +++++++++++++++++++++++++++++------------------------
 1 file changed, 48 insertions(+), 40 deletions(-)

diff --git a/md4_test.go b/md4_test.go
index a4ca3f7..b31c7e6 100644
--- a/md4_test.go
+++ b/md4_test.go
@@ -16,29 +16,60 @@ package openssl
 
 import (
 	"crypto/rand"
-	"golang.org/x/crypto/md4"
+	"encoding/hex"
 	"io"
 	"testing"
 )
 
-func TestMD4(t *testing.T) {
-	for i := 0; i < 100; i++ {
-		buf := make([]byte, 10*1024-i)
-		if _, err := io.ReadFull(rand.Reader, buf); err != nil {
+var md4Examples = []struct{ out, in string }{
+	{"31d6cfe0d16ae931b73c59d7e0c089c0", ""},
+	{"93875419eca14bbf961e412147839d04", "99"},
+	{"89b4c9a073ae963f95370a9a1e897a74", "7b89"},
+	{"be47aa5b399de162db079674047af65b", "803c78"},
+	{"6d97329845e30e79335fef1eb9d76d5e", "79b08de9"},
+	{"7115059e7a77e50cf722afbaad19611d", "42251df47b"},
+	{"468d3dfe53a140993d10cb977708c22c", "bd0ae6faa6e8"},
+	{"97f951156d4fe99e935b437ea5535a85", "ce511e2fd6e596"},
+	{"e50e5be10795a54d45aba39e6af2ecd5", "3f526ded71688ef0"},
+	{"c6c6d4ba2070c842f4d4388e3919a75c", "68aa2699f3fd154a5c"},
+	{"821fac95ab8a7443e3e0a47711e3e4ae", "133fc4081c3c9d0fe962"},
+	{"ac9e63ee02c6fdc097de1e2735cd1415", "f2b43f4e0e4448054e57fc"},
+	{"db82e7f6c26468e41b9f34082dcbf976", "ba8d2fd4323e389a23477216"},
+	{"bdd168bbe205e36bb852518113247a9e", "3b3b832ff6ff259ab028689bc5"},
+	{"c08b6b2eeab0bf3234314eb6a573cd9e", "ef0746f1fba74e018d718e74bdf1"},
+	{"0c2b7a7701bbe40f4668677cf3cc9bb9", "d3fd98ccbf59e8f61277ec9a668212"},
+	{"ce5087675d227d65de1ae02db2c8aec4", "551705b22d1b12c7056018d8a8468a7b"},
+	{"8130c37467524e6ab64999c4bde575a4", "d075bb0ee09f90399508e27d3059619abf"},
+	{"736cea235c6e67772a05d5c4c24ed5bb", "53a1880520136e99a5e42235a706ca929c5c"},
+	{"cdd0dc65d134efe608113ad57c053e82", "b15c56e59f525c60d563a0064866b2a8550aa8"},
+	{"29105f10e7570f7242e0b8f3a3514f82", "f4e6b432479abb4095cd7e4788ce9cf077acc932"},
+	{"33f1a70b35b51f42704aec6a01d06f8f", "6b0e95b9a09996809a1ac25142be3d46a01b78c26d"},
+	{"bf4a3ebf686409832d92ac0ecf70fc6e", "ee0f76cd3e233058ba311fefc089ce1d9217ab3ae229"},
+	{"5359d01e422ce2617f516e48b1693003", "57788a4e5514fbec6a7db6abf3f8d41cba2c843496467b"},
+	{"a8ad7335fa62b8f4eb40f711b2793972", "840ca6f027703fe7119bba138bfc399d8c9725854b7a36c1"},
+	{"5bf38c84aa17043ca1ac3b6a0d70d6f6", "a8340d43b3c2f19b963f16989b60aab83a5e90415f205fdd99"},
+	{"612e96a3a484716f8648874b1b3e8b16", "e66e7141838666e06e01d45dc9eaab610bf46710287b9ad6b40e"},
+	{"d436e950d55f25548c86ebf065a5d23e", "e8af98c8e8d86f7df0d65e225c0d48c075fafc27733d28b4a53077"},
+	{"b48d7af2252ec0107f5631736d756ff9", "34554eb3f2df01135aab9a157c0de8c5804c9df20b8241b83b7999e1"},
+	{"bcd8447e2c1de19c076c8b7a04f7469e", "af7ecf59b66eea345800d48e00e2953eb654efbf433abb27ad2c497a08"},
+	{"1eeb6f74cf827b50d285d6749404c5e3", "c0f89522341128dc5e5e73c8b96775d7eb3d550d9786cc88b23479e14d11"},
+	{"6e593341e62194911d5cc31e39835f27", "c5e4bc73821faa34adf9468441ffd97520a96cd5debda4d51edcaaf2b23fbd"},
+}
+
+func TestMD4Examples(t *testing.T) {
+	for _, ex := range md4Examples {
+		buf, err := hex.DecodeString(ex.in)
+		if err != nil {
 			t.Fatal(err)
 		}
 
-		expected := [16]byte{}
-		md4Ctx := md4.New()
-		md4Ctx.Write(buf)
-		copy(expected[:], md4Ctx.Sum(nil))
 		got, err := MD4(buf)
 		if err != nil {
 			t.Fatal(err)
 		}
 
-		if expected != got {
-			t.Fatalf("exp:%x got:%x", expected, got)
+		if hgot := hex.EncodeToString(got[:]); hgot != ex.out {
+			t.Fatalf("%s: %s != %s", ex.in, hgot, ex.out)
 		}
 	}
 }
@@ -48,35 +79,28 @@ func TestMD4Writer(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
-	hash := md4.New()
 
-	for i := 0; i < 100; i++ {
+	for _, ex := range md4Examples {
 		if err := ohash.Reset(); err != nil {
 			t.Fatal(err)
 		}
-		hash.Reset()
-		buf := make([]byte, 10*1024-i)
-		if _, err := io.ReadFull(rand.Reader, buf); err != nil {
+
+		buf, err := hex.DecodeString(ex.in)
+		if err != nil {
 			t.Fatal(err)
 		}
 
 		if _, err := ohash.Write(buf); err != nil {
 			t.Fatal(err)
 		}
-		if _, err := hash.Write(buf); err != nil {
-			t.Fatal(err)
-		}
 
-		var got, exp [16]byte
-
-		hash.Sum(exp[:0])
 		got, err := ohash.Sum()
 		if err != nil {
 			t.Fatal(err)
 		}
 
-		if got != exp {
-			t.Fatalf("exp:%x got:%x", exp, got)
+		if hgot := hex.EncodeToString(got[:]); hgot != ex.out {
+			t.Fatalf("%s: %s != %s", ex.in, hgot, ex.out)
 		}
 	}
 }
@@ -99,22 +123,6 @@ func BenchmarkMD4Large_openssl(b *testing.B) {
 	benchmarkMD4(b, 1024*1024, func(buf []byte) { MD4(buf) })
 }
 
-func BenchmarkMD4Large_stdlib(b *testing.B) {
-	benchmarkMD4(b, 1024*1024, func(buf []byte) {
-		md4Ctx := md4.New()
-		md4Ctx.Write(buf)
-		md4Ctx.Sum(nil)
-	})
-}
-
 func BenchmarkMD4Small_openssl(b *testing.B) {
 	benchmarkMD4(b, 1, func(buf []byte) { MD4(buf) })
 }
-
-func BenchmarkMD4Small_stdlib(b *testing.B) {
-	benchmarkMD4(b, 1, func(buf []byte) {
-		md4Ctx := md4.New()
-		md4Ctx.Write(buf)
-		md4Ctx.Sum(nil)
-	})
-}