Init: copy code from gobang

1 files changed, 462 insertions, 0 deletions

diff --git a/tests/scrypt.go b/tests/scrypt.go
new file mode 100644
index 0000000..d6d59c3
--- /dev/null
+++ b/tests/scrypt.go
@@ -0,0 +1,462 @@
+package scrypt
+
+import (
+	"crypto/sha1"
+	"crypto/sha256"
+	"encoding/base64"
+	"encoding/hex"
+	"fmt"
+	"hash"
+	"os"
+	"reflect"
+)
+
+
+
+func showColour() bool {
+	return os.Getenv("NO_COLOUR") == ""
+}
+
+func testStart(name string) {
+	fmt.Fprintf(os.Stderr, "%s:\n", name)
+}
+
+func testing(message string, body func()) {
+	if showColour() {
+		fmt.Fprintf(
+			os.Stderr,
+			"\033[0;33mtesting\033[0m: %s... ",
+			message,
+		)
+		body()
+		fmt.Fprintf(os.Stderr, "\033[0;32mOK\033[0m.\n")
+	} else {
+		fmt.Fprintf(os.Stderr, "testing: %s... ", message)
+		body()
+		fmt.Fprintf(os.Stderr, "OK.\n")
+	}
+}
+
+func assertEq(given any, expected any) {
+	if !reflect.DeepEqual(given, expected) {
+		if showColour() {
+			fmt.Fprintf(os.Stderr, "\033[0;31mERR\033[0m.\n")
+		} else {
+			fmt.Fprintf(os.Stderr, "ERR.\n")
+		}
+		fmt.Fprintf(os.Stderr, "given != expected\n")
+		fmt.Fprintf(os.Stderr, "given:    %#v\n", given)
+		fmt.Fprintf(os.Stderr, "expected: %#v\n", expected)
+		os.Exit(1)
+	}
+}
+
+
+type pbkdfTestVector struct {
+	password string
+	salt     string
+	iter     int
+	output   []byte
+}
+
+// Test vectors from RFC 6070, http://tools.ietf.org/html/rfc6070
+var sha1TestVectors = []pbkdfTestVector {
+	{
+		"password",
+		"salt",
+		1,
+		[]byte {
+			0x0c, 0x60, 0xc8, 0x0f, 0x96, 0x1f, 0x0e, 0x71,
+			0xf3, 0xa9, 0xb5, 0x24, 0xaf, 0x60, 0x12, 0x06,
+			0x2f, 0xe0, 0x37, 0xa6,
+		},
+	},
+	{
+		"password",
+		"salt",
+		2,
+		[]byte{
+			0xea, 0x6c, 0x01, 0x4d, 0xc7, 0x2d, 0x6f, 0x8c,
+			0xcd, 0x1e, 0xd9, 0x2a, 0xce, 0x1d, 0x41, 0xf0,
+			0xd8, 0xde, 0x89, 0x57,
+		},
+	},
+	{
+		"password",
+		"salt",
+		4096,
+		[]byte{
+			0x4b, 0x00, 0x79, 0x01, 0xb7, 0x65, 0x48, 0x9a,
+			0xbe, 0xad, 0x49, 0xd9, 0x26, 0xf7, 0x21, 0xd0,
+			0x65, 0xa4, 0x29, 0xc1,
+		},
+	},
+	// // This one takes too long
+	// {
+	// 	"password",
+	// 	"salt",
+	// 	16777216,
+	// 	[]byte {
+	// 		0xee, 0xfe, 0x3d, 0x61, 0xcd, 0x4d, 0xa4, 0xe4,
+	// 		0xe9, 0x94, 0x5b, 0x3d, 0x6b, 0xa2, 0x15, 0x8c,
+	// 		0x26, 0x34, 0xe9, 0x84,
+	// 	},
+	// },
+	{
+		"passwordPASSWORDpassword",
+		"saltSALTsaltSALTsaltSALTsaltSALTsalt",
+		4096,
+		[]byte{
+			0x3d, 0x2e, 0xec, 0x4f, 0xe4, 0x1c, 0x84, 0x9b,
+			0x80, 0xc8, 0xd8, 0x36, 0x62, 0xc0, 0xe4, 0x4a,
+			0x8b, 0x29, 0x1a, 0x96, 0x4c, 0xf2, 0xf0, 0x70,
+			0x38,
+		},
+	},
+	{
+		"pass\000word",
+		"sa\000lt",
+		4096,
+		[]byte{
+			0x56, 0xfa, 0x6a, 0xa7, 0x55, 0x48, 0x09, 0x9d,
+			0xcc, 0x37, 0xd7, 0xf0, 0x34, 0x25, 0xe0, 0xc3,
+		},
+	},
+}
+
+// Test vectors from
+// http://stackoverflow.com/questions/5130513/pbkdf2-hmac-sha2-test-vectors
+var sha256TestVectors = []pbkdfTestVector {
+	{
+		"password",
+		"salt",
+		1,
+		[]byte {
+			0x12, 0x0f, 0xb6, 0xcf, 0xfc, 0xf8, 0xb3, 0x2c,
+			0x43, 0xe7, 0x22, 0x52, 0x56, 0xc4, 0xf8, 0x37,
+			0xa8, 0x65, 0x48, 0xc9,
+		},
+	},
+	{
+		"password",
+		"salt",
+		2,
+		[]byte {
+			0xae, 0x4d, 0x0c, 0x95, 0xaf, 0x6b, 0x46, 0xd3,
+			0x2d, 0x0a, 0xdf, 0xf9, 0x28, 0xf0, 0x6d, 0xd0,
+			0x2a, 0x30, 0x3f, 0x8e,
+		},
+	},
+	{
+		"password",
+		"salt",
+		4096,
+		[]byte {
+			0xc5, 0xe4, 0x78, 0xd5, 0x92, 0x88, 0xc8, 0x41,
+			0xaa, 0x53, 0x0d, 0xb6, 0x84, 0x5c, 0x4c, 0x8d,
+			0x96, 0x28, 0x93, 0xa0,
+		},
+	},
+	{
+		"passwordPASSWORDpassword",
+		"saltSALTsaltSALTsaltSALTsaltSALTsalt",
+		4096,
+		[]byte {
+			0x34, 0x8c, 0x89, 0xdb, 0xcb, 0xd3, 0x2b, 0x2f,
+			0x32, 0xd8, 0x14, 0xb8, 0x11, 0x6e, 0x84, 0xcf,
+			0x2b, 0x17, 0x34, 0x7e, 0xbc, 0x18, 0x00, 0x18,
+			0x1c,
+		},
+	},
+	{
+		"pass\000word",
+		"sa\000lt",
+		4096,
+		[]byte {
+			0x89, 0xb6, 0x9d, 0x05, 0x16, 0xf8, 0x29, 0x89,
+			0x3c, 0x69, 0x62, 0x26, 0x65, 0x0a, 0x86, 0x87,
+		},
+	},
+}
+
+func testHash(h func() hash.Hash, hashName string, vectors []pbkdfTestVector) {
+	for _, v := range vectors {
+		out := _PBKDF2Key(
+			[]byte(v.password),
+			[]byte(v.salt),
+			v.iter,
+			len(v.output),
+			h,
+		)
+		assertEq(out, v.output)
+	}
+}
+
+func test__PBKDF() {
+	testStart("_PBKDF()")
+
+	testing("HMAC with SHA1", func() {
+		testHash(sha1.New, "SHA1", sha1TestVectors)
+	})
+
+	testing("HMAC with SHA256", func() {
+		testHash(sha256.New, "SHA256", sha256TestVectors)
+	})
+}
+
+type scryptTestVector struct {
+	password string
+	salt     string
+	N, r, p  int
+	output   []byte
+	err      error
+}
+
+var good = []scryptTestVector {
+	{
+		"password",
+		"salt",
+		2, 10, 10,
+		[]byte {
+			0x48, 0x2c, 0x85, 0x8e, 0x22, 0x90, 0x55, 0xe6, 0x2f,
+			0x41, 0xe0, 0xec, 0x81, 0x9a, 0x5e, 0xe1, 0x8b, 0xdb,
+			0x87, 0x25, 0x1a, 0x53, 0x4f, 0x75, 0xac, 0xd9, 0x5a,
+			0xc5, 0xe5, 0xa, 0xa1, 0x5f,
+		},
+		nil,
+	},
+	{
+		"password",
+		"salt",
+		16, 100, 100,
+		[]byte {
+			0x88, 0xbd, 0x5e, 0xdb, 0x52, 0xd1, 0xdd, 0x0, 0x18,
+			0x87, 0x72, 0xad, 0x36, 0x17, 0x12, 0x90, 0x22, 0x4e,
+			0x74, 0x82, 0x95, 0x25, 0xb1, 0x8d, 0x73, 0x23, 0xa5,
+			0x7f, 0x91, 0x96, 0x3c, 0x37,
+		},
+		nil,
+	},
+	{
+		"this is a long \000 password",
+		"and this is a long \000 salt",
+		16384, 8, 1,
+		[]byte {
+			0xc3, 0xf1, 0x82, 0xee, 0x2d, 0xec, 0x84, 0x6e, 0x70,
+			0xa6, 0x94, 0x2f, 0xb5, 0x29, 0x98, 0x5a, 0x3a, 0x09,
+			0x76, 0x5e, 0xf0, 0x4c, 0x61, 0x29, 0x23, 0xb1, 0x7f,
+			0x18, 0x55, 0x5a, 0x37, 0x07, 0x6d, 0xeb, 0x2b, 0x98,
+			0x30, 0xd6, 0x9d, 0xe5, 0x49, 0x26, 0x51, 0xe4, 0x50,
+			0x6a, 0xe5, 0x77, 0x6d, 0x96, 0xd4, 0x0f, 0x67, 0xaa,
+			0xee, 0x37, 0xe1, 0x77, 0x7b, 0x8a, 0xd5, 0xc3, 0x11,
+			0x14, 0x32, 0xbb, 0x3b, 0x6f, 0x7e, 0x12, 0x64, 0x40,
+			0x18, 0x79, 0xe6, 0x41, 0xae,
+		},
+		nil,
+	},
+	{
+		"p",
+		"s",
+		2, 1, 1,
+		[]byte {
+			0x48, 0xb0, 0xd2, 0xa8, 0xa3, 0x27, 0x26, 0x11, 0x98,
+			0x4c, 0x50, 0xeb, 0xd6, 0x30, 0xaf, 0x52,
+		},
+		nil,
+	},
+
+	{
+		"",
+		"",
+		16, 1, 1,
+		[]byte {
+			0x77, 0xd6, 0x57, 0x62, 0x38, 0x65, 0x7b, 0x20, 0x3b,
+			0x19, 0xca, 0x42, 0xc1, 0x8a, 0x04, 0x97, 0xf1, 0x6b,
+			0x48, 0x44, 0xe3, 0x07, 0x4a, 0xe8, 0xdf, 0xdf, 0xfa,
+			0x3f, 0xed, 0xe2, 0x14, 0x42, 0xfc, 0xd0, 0x06, 0x9d,
+			0xed, 0x09, 0x48, 0xf8, 0x32, 0x6a, 0x75, 0x3a, 0x0f,
+			0xc8, 0x1f, 0x17, 0xe8, 0xd3, 0xe0, 0xfb, 0x2e, 0x0d,
+			0x36, 0x28, 0xcf, 0x35, 0xe2, 0x0c, 0x38, 0xd1, 0x89,
+			0x06,
+		},
+		nil,
+	},
+	{
+		"password",
+		"NaCl",
+		1024, 8, 16,
+		[]byte {
+			0xfd, 0xba, 0xbe, 0x1c, 0x9d, 0x34, 0x72, 0x00, 0x78,
+			0x56, 0xe7, 0x19, 0x0d, 0x01, 0xe9, 0xfe, 0x7c, 0x6a,
+			0xd7, 0xcb, 0xc8, 0x23, 0x78, 0x30, 0xe7, 0x73, 0x76,
+			0x63, 0x4b, 0x37, 0x31, 0x62, 0x2e, 0xaf, 0x30, 0xd9,
+			0x2e, 0x22, 0xa3, 0x88, 0x6f, 0xf1, 0x09, 0x27, 0x9d,
+			0x98, 0x30, 0xda, 0xc7, 0x27, 0xaf, 0xb9, 0x4a, 0x83,
+			0xee, 0x6d, 0x83, 0x60, 0xcb, 0xdf, 0xa2, 0xcc, 0x06,
+			0x40,
+		},
+		nil,
+	},
+	{
+		"pleaseletmein", "SodiumChloride",
+		16384, 8, 1,
+		[]byte {
+			0x70, 0x23, 0xbd, 0xcb, 0x3a, 0xfd, 0x73, 0x48, 0x46,
+			0x1c, 0x06, 0xcd, 0x81, 0xfd, 0x38, 0xeb, 0xfd, 0xa8,
+			0xfb, 0xba, 0x90, 0x4f, 0x8e, 0x3e, 0xa9, 0xb5, 0x43,
+			0xf6, 0x54, 0x5d, 0xa1, 0xf2, 0xd5, 0x43, 0x29, 0x55,
+			0x61, 0x3f, 0x0f, 0xcf, 0x62, 0xd4, 0x97, 0x05, 0x24,
+			0x2a, 0x9a, 0xf9, 0xe6, 0x1e, 0x85, 0xdc, 0x0d, 0x65,
+			0x1e, 0x40, 0xdf, 0xcf, 0x01, 0x7b, 0x45, 0x57, 0x58,
+			0x87,
+		},
+		nil,
+	},
+	// // Disabled: needs 1 GiB RAM and takes too long for a simple test.
+	// {
+	// 	"pleaseletmein", "SodiumChloride",
+	// 	1048576, 8, 1,
+	// 	[]byte{
+	// 		0x21, 0x01, 0xcb, 0x9b, 0x6a, 0x51, 0x1a, 0xae, 0xad,
+	// 		0xdb, 0xbe, 0x09, 0xcf, 0x70, 0xf8, 0x81, 0xec, 0x56,
+	// 		0x8d, 0x57, 0x4a, 0x2f, 0xfd, 0x4d, 0xab, 0xe5, 0xee,
+	// 		0x98, 0x20, 0xad, 0xaa, 0x47, 0x8e, 0x56, 0xfd, 0x8f,
+	// 		0x4b, 0xa5, 0xd0, 0x9f, 0xfa, 0x1c, 0x6d, 0x92, 0x7c,
+	// 		0x40, 0xf4, 0xc3, 0x37, 0x30, 0x40, 0x49, 0xe8, 0xa9,
+	// 		0x52, 0xfb, 0xcb, 0xf4, 0x5c, 0x6f, 0xa7, 0x7a, 0x41,
+	// 		0xa4,
+	// 	},
+	// 	nil,
+	// },
+}
+
+const halfMax = maxInt / 2
+var bad = []scryptTestVector {
+	{"p", "s", 0,  1,       1,       nil, BadNError},            // N == 0
+	{"p", "s", 1,  1,       1,       nil, BadNError},            // N == 1
+	{"p", "s", 7,  8,       1,       nil, BadNError},            // N is not power of 2
+	{"p", "s", 16, halfMax, halfMax, nil, ParamsTooLargeError},  // p * r too large
+}
+
+func test_validParams() {
+	testStart("validParams()")
+
+	return // FIXME
+	testing("bad hashes", func() {
+		for _, v := range bad {
+			_, err := scrypt(
+				[]byte(v.password),
+				[]byte(v.salt),
+				v.N,
+				v.r,
+				v.p,
+				32,
+			)
+			// fmt.Println("N: %#v\n", v.N)
+			assertEq(err, v.err)
+		}
+	})
+}
+
+func test_scrypt() {
+	testStart("scrypt()")
+
+	testing("good hashes", func() {
+		for _, v := range good {
+			k, err := scrypt(
+				[]byte(v.password),
+				[]byte(v.salt),
+				v.N,
+				v.r,
+				v.p,
+				len(v.output),
+			)
+			assertEq(err, nil)
+			assertEq(k, v.output)
+		}
+	})
+
+	testing("bad hashes", func() {
+		for _, v := range bad {
+			_, err := scrypt(
+				[]byte(v.password),
+				[]byte(v.salt),
+				v.N,
+				v.r,
+				v.p,
+				32,
+			)
+			// fmt.Println("N: %#v\n", v.N)
+			assertEq(err, v.err)
+		}
+	})
+
+	testing("example value", func() {
+		const expected = "lGnMz8io0AUkfzn6Pls1qX20Vs7PGN6sbYQ2TQgY12M="
+		// DO NOT use this salt value; generate your own random salt.
+		// 8 bytes is a good length.
+		salt := []byte{0xc8, 0x28, 0xf2, 0x58, 0xa7, 0x6a, 0xad, 0x7b}
+
+		dk, err := scrypt(
+			[]byte("some password"),
+			salt,
+			1<<15,
+			8,
+			1,
+			32,
+		)
+		assertEq(err, nil)
+
+		given := base64.StdEncoding.EncodeToString(dk)
+		assertEq(given, expected)
+	})
+}
+
+func test_Random() {
+	testStart("Random()")
+
+/*
+FIXME
+	testing("we get the desired output size", func() {
+		for i := 0; i < 100; i++ {
+			buffer := Random(i)
+			assertEq(len(buffer), i)
+		}
+	})
+	*/
+}
+
+func test_Salt() {
+	testStart("Salt()")
+
+	testing("we generate a random salt of a fixed size", func() {
+		salt := Salt()
+		assertEq(len(salt), scryptSaltMinLength)
+
+		var buffer [scryptSaltMinLength * 2]byte
+		hex.Encode(buffer[:], salt)
+		fmt.Fprintf(os.Stderr, "%s ", string(buffer[:]))
+	})
+}
+
+func test_Hash() {
+	testStart("Hash()")
+
+	testing("same input, same output", func() {
+		password := Salt()
+		salt := Salt()
+		hash1 := Hash(password, salt)
+		hash2 := Hash(password, salt)
+		assertEq(hash1, hash2)
+	})
+}
+
+
+func MainTest() {
+	test__PBKDF()
+	test_validParams()
+	test_scrypt()
+	test_Hash()
+	test_Random()
+	test_Salt()
+}