package scrypt import ( "encoding/base64" "strings" g "gobang" ) type scryptTestVector struct { password string salt string N, r, p int output []byte } 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, }, }, { "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, }, }, { "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, }, }, { "p", "s", 2, 1, 1, []byte { 0x48, 0xb0, 0xd2, 0xa8, 0xa3, 0x27, 0x26, 0x11, 0x98, 0x4c, 0x50, 0xeb, 0xd6, 0x30, 0xaf, 0x52, }, }, { "", "", 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, }, }, { "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, }, }, { "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, }, }, // // 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, // }, // }, } const halfMax = (int((^uint(0)) >> 1)) / 2 var bad = []scryptTestVector { {"p", "s", 0, 1, 1, nil}, // N == 0 {"p", "s", 1, 1, 1, nil}, // N == 1 {"p", "s", 7, 8, 1, nil}, // N is not power of 2 {"p", "s", 16, halfMax, halfMax, nil}, // p * r too large } func test_scrypt() { g.TestStart("scrypt()") g.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), ) g.TAssertEqual(err, nil) g.TAssertEqual(k, v.output) } }) g.Testing("bad hashes", func() { for _, v := range bad { _, err := scrypt( []byte(v.password), []byte(v.salt), v.N, v.r, v.p, 32, ) g.TErrorNil(err) } }) g.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, ) g.TAssertEqual(err, nil) given := base64.StdEncoding.EncodeToString(dk) g.TAssertEqual(given, expected) }) } func test_SaltFrom() { g.TestStart("SaltFrom()") g.Testing("reader error is propagated", func() { r := strings.NewReader("input") payload, err := SaltFrom(r) g.TAssertEqual(err.Error(), "unexpected EOF") g.TAssertEqual(payload, []byte(nil)) }) } func test_Salt() { g.TestStart("Salt()") g.Testing("we generate a random salt of a fixed size", func() { salt, err := Salt() g.TErrorIf(err) g.TAssertEqual(len(salt), _SALT_MIN_LENGTH) }) } func test_Hash() { g.TestStart("Hash()") g.Testing("same input, same output", func() { password, err := Salt() g.TErrorIf(err) salt, err := Salt() g.TErrorIf(err) input := HashInput{ Password: password, Salt: salt, } hash1, err := Hash(input) g.TErrorIf(err) hash2, err := Hash(input) g.TErrorIf(err) g.TAssertEqual(hash1, hash2) }) } func test_Check() { g.TestStart("Check()") h := func(password []byte, salt []byte) []byte { input := HashInput{ Password: password, Salt: salt, } hash, err := Hash(input) g.TErrorIf(err) return hash } chk := func(password []byte, salt []byte, hash []byte) bool { input := CheckInput{ Password: password, Salt: salt, Hash: hash, } ok, err := Check(input) g.TErrorIf(err) return ok } g.Testing("true for equal inputs", func() { password1 := []byte("password") password2 := []byte("passw0rd") salt1 := []byte("salt0000111111112222222233333333") salt2 := []byte("salt0000l11111112222222233333333") hash1 := h(password1, salt1) hash2 := h(password1, salt2) hash3 := h(password2, salt1) hash4 := h(password2, salt2) given1 := []bool{ chk(password1, salt1, hash1), chk(password1, salt2, hash2), chk(password2, salt1, hash3), chk(password2, salt2, hash4), } expected1 := []bool{ true, true, true, true, } given2 := []bool{ chk(password1, salt1, hash4), chk(password1, salt2, hash3), chk(password2, salt1, hash2), chk(password2, salt2, hash1), } expected2 := []bool{ false, false, false, false, } g.TAssertEqual(given1, expected1) g.TAssertEqual(given2, expected2) }) } func MainTest() { test_scrypt() test_SaltFrom() test_Salt() test_Hash() test_Check() }