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@@ -0,0 +1,766 @@
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+package test_core_crypto
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+
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+import "base:runtime"
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+import "core:encoding/hex"
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+import "core:fmt"
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+import "core:testing"
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+
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+import field "core:crypto/_fiat/field_curve25519"
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+import "core:crypto/ed25519"
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+import "core:crypto/ristretto255"
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+import "core:crypto/x25519"
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+
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+import tc "tests:common"
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+
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+@(test)
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+test_ecc25519 :: proc(t: ^testing.T) {
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+ runtime.DEFAULT_TEMP_ALLOCATOR_TEMP_GUARD()
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+
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+ tc.log(t, "Testing curve25519 ECC")
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+
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+ test_sqrt_ratio_m1(t)
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+ test_ristretto255(t)
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+
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+ test_ed25519(t)
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+ test_x25519(t)
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+}
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+
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+@(test)
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+test_sqrt_ratio_m1 :: proc(t: ^testing.T) {
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+ tc.log(t, "Testing sqrt_ratio_m1")
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+
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+ test_vectors := []struct {
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+ u: string,
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+ v: string,
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+ r: string,
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+ was_square: bool,
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+ } {
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+ {
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+ "0000000000000000000000000000000000000000000000000000000000000000",
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+ "0000000000000000000000000000000000000000000000000000000000000000",
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+ "0000000000000000000000000000000000000000000000000000000000000000",
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+ true,
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+ },
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+ {
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+ "0000000000000000000000000000000000000000000000000000000000000000",
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+ "0100000000000000000000000000000000000000000000000000000000000000",
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+ "0000000000000000000000000000000000000000000000000000000000000000",
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+ true,
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+ },
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+ {
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+ "0100000000000000000000000000000000000000000000000000000000000000",
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+ "0000000000000000000000000000000000000000000000000000000000000000",
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+ "0000000000000000000000000000000000000000000000000000000000000000",
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+ false,
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+ },
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+ {
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+ "0200000000000000000000000000000000000000000000000000000000000000",
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+ "0100000000000000000000000000000000000000000000000000000000000000",
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+ "3c5ff1b5d8e4113b871bd052f9e7bcd0582804c266ffb2d4f4203eb07fdb7c54",
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+ false,
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+ },
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+ {
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+ "0400000000000000000000000000000000000000000000000000000000000000",
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+ "0100000000000000000000000000000000000000000000000000000000000000",
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+ "0200000000000000000000000000000000000000000000000000000000000000",
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+ true,
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+ },
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+ {
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+ "0100000000000000000000000000000000000000000000000000000000000000",
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+ "0400000000000000000000000000000000000000000000000000000000000000",
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+ "f6ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff3f",
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+ true,
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+ },
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+ }
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+ for v, _ in test_vectors {
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+ u_bytes, _ := hex.decode(transmute([]byte)(v.u), context.temp_allocator)
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+ v_bytes, _ := hex.decode(transmute([]byte)(v.v), context.temp_allocator)
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+ r_bytes, _ := hex.decode(transmute([]byte)(v.r), context.temp_allocator)
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+
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+ u_ := transmute(^[32]byte)(raw_data(u_bytes))
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+ v_ := transmute(^[32]byte)(raw_data(v_bytes))
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+ r_ := transmute(^[32]byte)(raw_data(r_bytes))
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+
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+ u, vee, r: field.Tight_Field_Element
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+ field.fe_from_bytes(&u, u_)
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+ field.fe_from_bytes(&vee, v_)
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+ was_square := field.fe_carry_sqrt_ratio_m1(
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+ &r,
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+ field.fe_relax_cast(&u),
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+ field.fe_relax_cast(&vee),
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+ )
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+
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+ tc.expect(
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+ t,
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+ (was_square == 1) == v.was_square && field.fe_equal_bytes(&r, r_) == 1,
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+ fmt.tprintf(
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+ "Expected (%v, %s) for SQRT_RATIO_M1(%s, %s), got %s",
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+ v.was_square,
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+ v.r,
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+ v.u,
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+ v.v,
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+ fe_str(&r),
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+ ),
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+ )
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+ }
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+}
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+
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+@(test)
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+test_ristretto255 :: proc(t: ^testing.T) {
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+ tc.log(t, "Testing ristretto255")
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+
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+ ge_gen: ristretto255.Group_Element
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+ ristretto255.ge_generator(&ge_gen)
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+
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+ // Invalid encodings.
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+ bad_encodings := []string {
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+ // Non-canonical field encodings.
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+ "00ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff",
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+ "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff7f",
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+ "f3ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff7f",
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+ "edffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff7f",
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+
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+ // Negative field elements.
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+ "0100000000000000000000000000000000000000000000000000000000000000",
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+ "01ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff7f",
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+ "ed57ffd8c914fb201471d1c3d245ce3c746fcbe63a3679d51b6a516ebebe0e20",
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+ "c34c4e1826e5d403b78e246e88aa051c36ccf0aafebffe137d148a2bf9104562",
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+ "c940e5a4404157cfb1628b108db051a8d439e1a421394ec4ebccb9ec92a8ac78",
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+ "47cfc5497c53dc8e61c91d17fd626ffb1c49e2bca94eed052281b510b1117a24",
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+ "f1c6165d33367351b0da8f6e4511010c68174a03b6581212c71c0e1d026c3c72",
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+ "87260f7a2f12495118360f02c26a470f450dadf34a413d21042b43b9d93e1309",
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+
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+ // Non-square x^2.
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+ "26948d35ca62e643e26a83177332e6b6afeb9d08e4268b650f1f5bbd8d81d371",
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+ "4eac077a713c57b4f4397629a4145982c661f48044dd3f96427d40b147d9742f",
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+ "de6a7b00deadc788eb6b6c8d20c0ae96c2f2019078fa604fee5b87d6e989ad7b",
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+ "bcab477be20861e01e4a0e295284146a510150d9817763caf1a6f4b422d67042",
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+ "2a292df7e32cababbd9de088d1d1abec9fc0440f637ed2fba145094dc14bea08",
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+ "f4a9e534fc0d216c44b218fa0c42d99635a0127ee2e53c712f70609649fdff22",
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+ "8268436f8c4126196cf64b3c7ddbda90746a378625f9813dd9b8457077256731",
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+ "2810e5cbc2cc4d4eece54f61c6f69758e289aa7ab440b3cbeaa21995c2f4232b",
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+
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+ // Negative x * y value.
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+ "3eb858e78f5a7254d8c9731174a94f76755fd3941c0ac93735c07ba14579630e",
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+ "a45fdc55c76448c049a1ab33f17023edfb2be3581e9c7aade8a6125215e04220",
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+ "d483fe813c6ba647ebbfd3ec41adca1c6130c2beeee9d9bf065c8d151c5f396e",
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+ "8a2e1d30050198c65a54483123960ccc38aef6848e1ec8f5f780e8523769ba32",
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+ "32888462f8b486c68ad7dd9610be5192bbeaf3b443951ac1a8118419d9fa097b",
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+ "227142501b9d4355ccba290404bde41575b037693cef1f438c47f8fbf35d1165",
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+ "5c37cc491da847cfeb9281d407efc41e15144c876e0170b499a96a22ed31e01e",
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+ "445425117cb8c90edcbc7c1cc0e74f747f2c1efa5630a967c64f287792a48a4b",
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+
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+ // s = -1, which causes y = 0.
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+ "ecffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff7f",
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+ }
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+ for x, _ in bad_encodings {
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+ b, _ := hex.decode(transmute([]byte)(x), context.temp_allocator)
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+
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+ ge: ristretto255.Group_Element
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+ ok := ristretto255.ge_set_bytes(&ge, b)
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+ tc.expect(t, !ok, fmt.tprintf("Expected false for %s", x))
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+ }
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+
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+ generator_multiples := []string {
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+ "0000000000000000000000000000000000000000000000000000000000000000",
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+ "e2f2ae0a6abc4e71a884a961c500515f58e30b6aa582dd8db6a65945e08d2d76",
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+ "6a493210f7499cd17fecb510ae0cea23a110e8d5b901f8acadd3095c73a3b919",
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+ "94741f5d5d52755ece4f23f044ee27d5d1ea1e2bd196b462166b16152a9d0259",
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+ "da80862773358b466ffadfe0b3293ab3d9fd53c5ea6c955358f568322daf6a57",
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+ "e882b131016b52c1d3337080187cf768423efccbb517bb495ab812c4160ff44e",
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+ "f64746d3c92b13050ed8d80236a7f0007c3b3f962f5ba793d19a601ebb1df403",
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+ "44f53520926ec81fbd5a387845beb7df85a96a24ece18738bdcfa6a7822a176d",
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+ "903293d8f2287ebe10e2374dc1a53e0bc887e592699f02d077d5263cdd55601c",
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+ "02622ace8f7303a31cafc63f8fc48fdc16e1c8c8d234b2f0d6685282a9076031",
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+ "20706fd788b2720a1ed2a5dad4952b01f413bcf0e7564de8cdc816689e2db95f",
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+ "bce83f8ba5dd2fa572864c24ba1810f9522bc6004afe95877ac73241cafdab42",
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+ "e4549ee16b9aa03099ca208c67adafcafa4c3f3e4e5303de6026e3ca8ff84460",
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+ "aa52e000df2e16f55fb1032fc33bc42742dad6bd5a8fc0be0167436c5948501f",
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+ "46376b80f409b29dc2b5f6f0c52591990896e5716f41477cd30085ab7f10301e",
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+ "e0c418f7c8d9c4cdd7395b93ea124f3ad99021bb681dfc3302a9d99a2e53e64e",
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+ }
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+ ges: [16]ristretto255.Group_Element
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+ for x, i in generator_multiples {
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+ b, _ := hex.decode(transmute([]byte)(x), context.temp_allocator)
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+
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+ ge := &ges[i]
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+ ok := ristretto255.ge_set_bytes(ge, b)
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+ tc.expect(t, ok, fmt.tprintf("Expected true for %s", x))
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+
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+ x_check := ge_str(ge)
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+
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+ tc.expect(
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+ t,
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+ x == x_check,
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+ fmt.tprintf(
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+ "Expected %s (round-trip) but got %s instead",
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+ x,
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+ x_check,
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+ ),
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+ )
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+
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+ if i == 1 {
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+ tc.expect(
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+ t,
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+ ristretto255.ge_equal(ge, &ge_gen) == 1,
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+ "Expected element 1 to be the generator",
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+ )
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+ }
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+ }
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+
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+ // Addition/Multiplication.
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+ for _, i in ges {
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+ sc: ristretto255.Scalar
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+ ristretto255.sc_set_u64(&sc, u64(i))
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+
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+ ge_check: ristretto255.Group_Element
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+
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+ ristretto255.ge_scalarmult_generator(&ge_check, &sc)
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+ x_check := ge_str(&ge_check)
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+ tc.expect(
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+ t,
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+ x_check == generator_multiples[i],
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+ fmt.tprintf(
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+ "Expected %s for G * %d (specialized), got %s",
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+ generator_multiples[i],
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+ i,
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+ x_check,
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+ ),
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+ )
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+
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+ ristretto255.ge_scalarmult(&ge_check, &ges[1], &sc)
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+ x_check = ge_str(&ge_check)
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+ tc.expect(
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+ t,
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+ x_check == generator_multiples[i],
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+ fmt.tprintf(
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+ "Expected %s for G * %d (generic), got %s (slow compare)",
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+ generator_multiples[i],
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+ i,
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+ x_check,
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+ ),
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+ )
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+
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+ ristretto255.ge_scalarmult_vartime(&ge_check, &ges[1], &sc)
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+ x_check = ge_str(&ge_check)
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+ tc.expect(
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+ t,
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+ x_check == generator_multiples[i],
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+ fmt.tprintf(
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+ "Expected %s for G * %d (generic vartime), got %s (slow compare)",
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+ generator_multiples[i],
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+ i,
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+ x_check,
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+ ),
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+ )
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+
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+ switch i {
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+ case 0:
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+ case:
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+ ge_prev := &ges[i-1]
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+ ristretto255.ge_add(&ge_check, ge_prev, &ge_gen)
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+
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+ x_check = ge_str(&ge_check)
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+ tc.expect(
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+ t,
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+ x_check == generator_multiples[i],
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+ fmt.tprintf(
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+ "Expected %s for ges[%d] + ges[%d], got %s (slow compare)",
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+ generator_multiples[i],
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+ i-1,
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+ 1,
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+ x_check,
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+ ),
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+ )
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+
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+ tc.expect(
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+ t,
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+ ristretto255.ge_equal(&ges[i], &ge_check) == 1,
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+ fmt.tprintf(
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+ "Expected %s for ges[%d] + ges[%d], got %s (fast compare)",
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+ generator_multiples[i],
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+ i-1,
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+ 1,
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+ x_check,
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+ ),
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+ )
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+ }
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+ }
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+
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+ wide_test_vectors := []struct {
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+ input: string,
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+ output: string,
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+ } {
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+ {
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+ "5d1be09e3d0c82fc538112490e35701979d99e06ca3e2b5b54bffe8b4dc772c14d98b696a1bbfb5ca32c436cc61c16563790306c79eaca7705668b47dffe5bb6",
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+ "3066f82a1a747d45120d1740f14358531a8f04bbffe6a819f86dfe50f44a0a46",
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+ },
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+ {
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+ "f116b34b8f17ceb56e8732a60d913dd10cce47a6d53bee9204be8b44f6678b270102a56902e2488c46120e9276cfe54638286b9e4b3cdb470b542d46c2068d38",
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+ "f26e5b6f7d362d2d2a94c5d0e7602cb4773c95a2e5c31a64f133189fa76ed61b",
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+ },
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+ {
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+ "8422e1bbdaab52938b81fd602effb6f89110e1e57208ad12d9ad767e2e25510c27140775f9337088b982d83d7fcf0b2fa1edffe51952cbe7365e95c86eaf325c",
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+ "006ccd2a9e6867e6a2c5cea83d3302cc9de128dd2a9a57dd8ee7b9d7ffe02826",
|
|
|
|
+ },
|
|
|
|
+ {
|
|
|
|
+ "ac22415129b61427bf464e17baee8db65940c233b98afce8d17c57beeb7876c2150d15af1cb1fb824bbd14955f2b57d08d388aab431a391cfc33d5bafb5dbbaf",
|
|
|
|
+ "f8f0c87cf237953c5890aec3998169005dae3eca1fbb04548c635953c817f92a",
|
|
|
|
+ },
|
|
|
|
+ {
|
|
|
|
+ "165d697a1ef3d5cf3c38565beefcf88c0f282b8e7dbd28544c483432f1cec7675debea8ebb4e5fe7d6f6e5db15f15587ac4d4d4a1de7191e0c1ca6664abcc413",
|
|
|
|
+ "ae81e7dedf20a497e10c304a765c1767a42d6e06029758d2d7e8ef7cc4c41179",
|
|
|
|
+ },
|
|
|
|
+ {
|
|
|
|
+ "a836e6c9a9ca9f1e8d486273ad56a78c70cf18f0ce10abb1c7172ddd605d7fd2979854f47ae1ccf204a33102095b4200e5befc0465accc263175485f0e17ea5c",
|
|
|
|
+ "e2705652ff9f5e44d3e841bf1c251cf7dddb77d140870d1ab2ed64f1a9ce8628",
|
|
|
|
+ },
|
|
|
|
+ {
|
|
|
|
+ "2cdc11eaeb95daf01189417cdddbf95952993aa9cb9c640eb5058d09702c74622c9965a697a3b345ec24ee56335b556e677b30e6f90ac77d781064f866a3c982",
|
|
|
|
+ "80bd07262511cdde4863f8a7434cef696750681cb9510eea557088f76d9e5065",
|
|
|
|
+ },
|
|
|
|
+ // These all produce the same output.
|
|
|
|
+ {
|
|
|
|
+ "edffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff1200000000000000000000000000000000000000000000000000000000000000",
|
|
|
|
+ "304282791023b73128d277bdcb5c7746ef2eac08dde9f2983379cb8e5ef0517f",
|
|
|
|
+ },
|
|
|
|
+ {
|
|
|
|
+ "edffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff",
|
|
|
|
+ "304282791023b73128d277bdcb5c7746ef2eac08dde9f2983379cb8e5ef0517f",
|
|
|
|
+ },
|
|
|
|
+ {
|
|
|
|
+ "0000000000000000000000000000000000000000000000000000000000000080ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff7f",
|
|
|
|
+ "304282791023b73128d277bdcb5c7746ef2eac08dde9f2983379cb8e5ef0517f",
|
|
|
|
+ },
|
|
|
|
+ {
|
|
|
|
+ "00000000000000000000000000000000000000000000000000000000000000001200000000000000000000000000000000000000000000000000000000000080",
|
|
|
|
+ "304282791023b73128d277bdcb5c7746ef2eac08dde9f2983379cb8e5ef0517f",
|
|
|
|
+ },
|
|
|
|
+ }
|
|
|
|
+ for v, _ in wide_test_vectors {
|
|
|
|
+ in_bytes, _ := hex.decode(transmute([]byte)(v.input), context.temp_allocator)
|
|
|
|
+
|
|
|
|
+ ge: ristretto255.Group_Element
|
|
|
|
+ ristretto255.ge_set_wide_bytes(&ge, in_bytes)
|
|
|
|
+
|
|
|
|
+ ge_check := ge_str(&ge)
|
|
|
|
+ tc.expect(
|
|
|
|
+ t,
|
|
|
|
+ ge_check == v.output,
|
|
|
|
+ fmt.tprintf(
|
|
|
|
+ "Expected %s for %s, got %s",
|
|
|
|
+ v.output,
|
|
|
|
+ ge_check,
|
|
|
|
+ ),
|
|
|
|
+ )
|
|
|
|
+ }
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+@(test)
|
|
|
|
+test_ed25519 :: proc(t: ^testing.T) {
|
|
|
|
+ tc.log(t, "Testing ed25519")
|
|
|
|
+
|
|
|
|
+ test_vectors_rfc := []struct {
|
|
|
|
+ priv_key: string,
|
|
|
|
+ pub_key: string,
|
|
|
|
+ msg: string,
|
|
|
|
+ sig: string,
|
|
|
|
+ } {
|
|
|
|
+ // Test vectors from RFC 8032
|
|
|
|
+ {
|
|
|
|
+ "9d61b19deffd5a60ba844af492ec2cc44449c5697b326919703bac031cae7f60",
|
|
|
|
+ "d75a980182b10ab7d54bfed3c964073a0ee172f3daa62325af021a68f707511a",
|
|
|
|
+ "",
|
|
|
|
+ "e5564300c360ac729086e2cc806e828a84877f1eb8e5d974d873e065224901555fb8821590a33bacc61e39701cf9b46bd25bf5f0595bbe24655141438e7a100b",
|
|
|
|
+ },
|
|
|
|
+ {
|
|
|
|
+ "4ccd089b28ff96da9db6c346ec114e0f5b8a319f35aba624da8cf6ed4fb8a6fb",
|
|
|
|
+ "3d4017c3e843895a92b70aa74d1b7ebc9c982ccf2ec4968cc0cd55f12af4660c",
|
|
|
|
+ "72",
|
|
|
|
+ "92a009a9f0d4cab8720e820b5f642540a2b27b5416503f8fb3762223ebdb69da085ac1e43e15996e458f3613d0f11d8c387b2eaeb4302aeeb00d291612bb0c00",
|
|
|
|
+ },
|
|
|
|
+ {
|
|
|
|
+ "c5aa8df43f9f837bedb7442f31dcb7b166d38535076f094b85ce3a2e0b4458f7",
|
|
|
|
+ "fc51cd8e6218a1a38da47ed00230f0580816ed13ba3303ac5deb911548908025",
|
|
|
|
+ "af82",
|
|
|
|
+ "6291d657deec24024827e69c3abe01a30ce548a284743a445e3680d7db5ac3ac18ff9b538d16f290ae67f760984dc6594a7c15e9716ed28dc027beceea1ec40a",
|
|
|
|
+ },
|
|
|
|
+ // TEST 1024 omitted for brevity, because all that does is add more to SHA-512
|
|
|
|
+ {
|
|
|
|
+ "833fe62409237b9d62ec77587520911e9a759cec1d19755b7da901b96dca3d42",
|
|
|
|
+ "ec172b93ad5e563bf4932c70e1245034c35467ef2efd4d64ebf819683467e2bf",
|
|
|
|
+ "ddaf35a193617abacc417349ae20413112e6fa4e89a97ea20a9eeee64b55d39a2192992a274fc1a836ba3c23a3feebbd454d4423643ce80e2a9ac94fa54ca49f",
|
|
|
|
+ "dc2a4459e7369633a52b1bf277839a00201009a3efbf3ecb69bea2186c26b58909351fc9ac90b3ecfdfbc7c66431e0303dca179c138ac17ad9bef1177331a704",
|
|
|
|
+ },
|
|
|
|
+ }
|
|
|
|
+ for v, _ in test_vectors_rfc {
|
|
|
|
+ priv_bytes, _ := hex.decode(transmute([]byte)(v.priv_key), context.temp_allocator)
|
|
|
|
+ pub_bytes, _ := hex.decode(transmute([]byte)(v.pub_key), context.temp_allocator)
|
|
|
|
+ msg_bytes, _ := hex.decode(transmute([]byte)(v.msg), context.temp_allocator)
|
|
|
|
+ sig_bytes, _ := hex.decode(transmute([]byte)(v.sig), context.temp_allocator)
|
|
|
|
+
|
|
|
|
+ priv_key: ed25519.Private_Key
|
|
|
|
+ ok := ed25519.private_key_set_bytes(&priv_key, priv_bytes)
|
|
|
|
+ tc.expect(
|
|
|
|
+ t,
|
|
|
|
+ ok,
|
|
|
|
+ fmt.tprintf(
|
|
|
|
+ "Expected %s to be a valid private key",
|
|
|
|
+ v.priv_key,
|
|
|
|
+ ),
|
|
|
|
+ )
|
|
|
|
+
|
|
|
|
+ key_bytes: [32]byte
|
|
|
|
+ ed25519.private_key_bytes(&priv_key, key_bytes[:])
|
|
|
|
+ tc.expect(
|
|
|
|
+ t,
|
|
|
|
+ ok,
|
|
|
|
+ fmt.tprintf(
|
|
|
|
+ "Expected private key %s round-trip, got %s",
|
|
|
|
+ v.priv_key,
|
|
|
|
+ string(hex.encode(key_bytes[:], context.temp_allocator)),
|
|
|
|
+ ),
|
|
|
|
+ )
|
|
|
|
+
|
|
|
|
+ pub_key: ed25519.Public_Key
|
|
|
|
+ ok = ed25519.public_key_set_bytes(&pub_key, pub_bytes)
|
|
|
|
+ tc.expect(
|
|
|
|
+ t,
|
|
|
|
+ ok,
|
|
|
|
+ fmt.tprintf(
|
|
|
|
+ "Expected %s to be a valid public key (priv->pub: %s)",
|
|
|
|
+ v.pub_key,
|
|
|
|
+ string(hex.encode(priv_key._pub_key._b[:], context.temp_allocator)),
|
|
|
|
+ ),
|
|
|
|
+ )
|
|
|
|
+
|
|
|
|
+ ed25519.public_key_bytes(&pub_key, key_bytes[:])
|
|
|
|
+ tc.expect(
|
|
|
|
+ t,
|
|
|
|
+ ok,
|
|
|
|
+ fmt.tprintf(
|
|
|
|
+ "Expected public key %s round-trip, got %s",
|
|
|
|
+ v.pub_key,
|
|
|
|
+ string(hex.encode(key_bytes[:], context.temp_allocator)),
|
|
|
|
+ ),
|
|
|
|
+ )
|
|
|
|
+
|
|
|
|
+ sig: [ed25519.SIGNATURE_SIZE]byte
|
|
|
|
+ ed25519.sign(&priv_key, msg_bytes, sig[:])
|
|
|
|
+ x := string(hex.encode(sig[:], context.temp_allocator))
|
|
|
|
+ tc.expect(
|
|
|
|
+ t,
|
|
|
|
+ x == v.sig,
|
|
|
|
+ fmt.tprintf(
|
|
|
|
+ "Expected %s for sign(%s, %s), got %s",
|
|
|
|
+ v.sig,
|
|
|
|
+ v.priv_key,
|
|
|
|
+ v.msg,
|
|
|
|
+ x,
|
|
|
|
+ ),
|
|
|
|
+ )
|
|
|
|
+
|
|
|
|
+ ok = ed25519.verify(&pub_key, msg_bytes, sig_bytes)
|
|
|
|
+ tc.expect(
|
|
|
|
+ t,
|
|
|
|
+ ok,
|
|
|
|
+ fmt.tprintf(
|
|
|
|
+ "Expected true for verify(%s, %s, %s)",
|
|
|
|
+ v.pub_key,
|
|
|
|
+ v.msg,
|
|
|
|
+ v.sig,
|
|
|
|
+ ),
|
|
|
|
+ )
|
|
|
|
+
|
|
|
|
+ ok = ed25519.verify(&priv_key._pub_key, msg_bytes, sig_bytes)
|
|
|
|
+ tc.expect(
|
|
|
|
+ t,
|
|
|
|
+ ok,
|
|
|
|
+ fmt.tprintf(
|
|
|
|
+ "Expected true for verify(pub(%s), %s %s)",
|
|
|
|
+ v.priv_key,
|
|
|
|
+ v.msg,
|
|
|
|
+ v.sig,
|
|
|
|
+ ),
|
|
|
|
+ )
|
|
|
|
+
|
|
|
|
+ // Corrupt the message and make sure verification fails.
|
|
|
|
+ switch len(msg_bytes) {
|
|
|
|
+ case 0:
|
|
|
|
+ tmp_msg := []byte{69}
|
|
|
|
+ msg_bytes = tmp_msg[:]
|
|
|
|
+ case:
|
|
|
|
+ msg_bytes[0] = msg_bytes[0] ~ 69
|
|
|
|
+ }
|
|
|
|
+ ok = ed25519.verify(&pub_key, msg_bytes, sig_bytes)
|
|
|
|
+ tc.expect(
|
|
|
|
+ t,
|
|
|
|
+ ok == false,
|
|
|
|
+ fmt.tprintf(
|
|
|
|
+ "Expected false for verify(%s, %s (corrupted), %s)",
|
|
|
|
+ v.pub_key,
|
|
|
|
+ v.msg,
|
|
|
|
+ v.sig,
|
|
|
|
+ ),
|
|
|
|
+ )
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ // Test cases from "Taming the many EdDSAs", which aim to exercise
|
|
|
|
+ // all of the ed25519 edge cases/implementation differences.
|
|
|
|
+ //
|
|
|
|
+ // - https://eprint.iacr.org/2020/1244
|
|
|
|
+ // - https://github.com/novifinancial/ed25519-speccheck
|
|
|
|
+ test_vectors_speccheck := []struct {
|
|
|
|
+ pub_key: string,
|
|
|
|
+ msg: string,
|
|
|
|
+ sig: string,
|
|
|
|
+ pub_key_ok: bool,
|
|
|
|
+ sig_ok: bool,
|
|
|
|
+ sig_ok_relaxed: bool, // Ok if the small-order A check is relaxed.
|
|
|
|
+ } {
|
|
|
|
+ // S = 0, small-order A, small-order R
|
|
|
|
+ {
|
|
|
|
+ "c7176a703d4dd84fba3c0b760d10670f2a2053fa2c39ccc64ec7fd7792ac03fa",
|
|
|
|
+ "8c93255d71dcab10e8f379c26200f3c7bd5f09d9bc3068d3ef4edeb4853022b6",
|
|
|
|
+ "c7176a703d4dd84fba3c0b760d10670f2a2053fa2c39ccc64ec7fd7792ac037a0000000000000000000000000000000000000000000000000000000000000000",
|
|
|
|
+ true,
|
|
|
|
+ false,
|
|
|
|
+ true,
|
|
|
|
+ },
|
|
|
|
+ // 0 < S < L, small-order A, mixed-order R
|
|
|
|
+ {
|
|
|
|
+ "c7176a703d4dd84fba3c0b760d10670f2a2053fa2c39ccc64ec7fd7792ac03fa",
|
|
|
|
+ "9bd9f44f4dcc75bd531b56b2cd280b0bb38fc1cd6d1230e14861d861de092e79",
|
|
|
|
+ "f7badec5b8abeaf699583992219b7b223f1df3fbbea919844e3f7c554a43dd43a5bb704786be79fc476f91d3f3f89b03984d8068dcf1bb7dfc6637b45450ac04",
|
|
|
|
+ true,
|
|
|
|
+ false,
|
|
|
|
+ true,
|
|
|
|
+ },
|
|
|
|
+ // 0 < S < L, mixed-order A, small-order R
|
|
|
|
+ {
|
|
|
|
+ "f7badec5b8abeaf699583992219b7b223f1df3fbbea919844e3f7c554a43dd43",
|
|
|
|
+ "aebf3f2601a0c8c5d39cc7d8911642f740b78168218da8471772b35f9d35b9ab",
|
|
|
|
+ "c7176a703d4dd84fba3c0b760d10670f2a2053fa2c39ccc64ec7fd7792ac03fa8c4bd45aecaca5b24fb97bc10ac27ac8751a7dfe1baff8b953ec9f5833ca260e",
|
|
|
|
+ true,
|
|
|
|
+ true,
|
|
|
|
+ true,
|
|
|
|
+ },
|
|
|
|
+ // 0 < S < L, mixed-order A, mixed-order R
|
|
|
|
+ {
|
|
|
|
+ "cdb267ce40c5cd45306fa5d2f29731459387dbf9eb933b7bd5aed9a765b88d4d",
|
|
|
|
+ "9bd9f44f4dcc75bd531b56b2cd280b0bb38fc1cd6d1230e14861d861de092e79",
|
|
|
|
+ "9046a64750444938de19f227bb80485e92b83fdb4b6506c160484c016cc1852f87909e14428a7a1d62e9f22f3d3ad7802db02eb2e688b6c52fcd6648a98bd009",
|
|
|
|
+ true,
|
|
|
|
+ true,
|
|
|
|
+ true,
|
|
|
|
+ },
|
|
|
|
+ // 0 < S < L, mixed-order A, mixed-order R
|
|
|
|
+ {
|
|
|
|
+ "cdb267ce40c5cd45306fa5d2f29731459387dbf9eb933b7bd5aed9a765b88d4d",
|
|
|
|
+ "e47d62c63f830dc7a6851a0b1f33ae4bb2f507fb6cffec4011eaccd55b53f56c",
|
|
|
|
+ "160a1cb0dc9c0258cd0a7d23e94d8fa878bcb1925f2c64246b2dee1796bed5125ec6bc982a269b723e0668e540911a9a6a58921d6925e434ab10aa7940551a09",
|
|
|
|
+ true,
|
|
|
|
+ true, // cofactored-only
|
|
|
|
+ true,
|
|
|
|
+ },
|
|
|
|
+ // 0 < S < L, mixed-order A, L-order R
|
|
|
|
+ {
|
|
|
|
+ "cdb267ce40c5cd45306fa5d2f29731459387dbf9eb933b7bd5aed9a765b88d4d",
|
|
|
|
+ "e47d62c63f830dc7a6851a0b1f33ae4bb2f507fb6cffec4011eaccd55b53f56c",
|
|
|
|
+ "21122a84e0b5fca4052f5b1235c80a537878b38f3142356b2c2384ebad4668b7e40bc836dac0f71076f9abe3a53f9c03c1ceeeddb658d0030494ace586687405",
|
|
|
|
+ true,
|
|
|
|
+ true, // cofactored only, (fail if 8h is pre-reduced)
|
|
|
|
+ true,
|
|
|
|
+ },
|
|
|
|
+ // S > L, L-order A, L-order R
|
|
|
|
+ {
|
|
|
|
+ "442aad9f089ad9e14647b1ef9099a1ff4798d78589e66f28eca69c11f582a623",
|
|
|
|
+ "85e241a07d148b41e47d62c63f830dc7a6851a0b1f33ae4bb2f507fb6cffec40",
|
|
|
|
+ "e96f66be976d82e60150baecff9906684aebb1ef181f67a7189ac78ea23b6c0e547f7690a0e2ddcd04d87dbc3490dc19b3b3052f7ff0538cb68afb369ba3a514",
|
|
|
|
+ true,
|
|
|
|
+ false,
|
|
|
|
+ false,
|
|
|
|
+ },
|
|
|
|
+ // S >> L, L-order A, L-order R
|
|
|
|
+ {
|
|
|
|
+ "442aad9f089ad9e14647b1ef9099a1ff4798d78589e66f28eca69c11f582a623",
|
|
|
|
+ "85e241a07d148b41e47d62c63f830dc7a6851a0b1f33ae4bb2f507fb6cffec40",
|
|
|
|
+ "8ce5b96c8f26d0ab6c47958c9e68b937104cd36e13c33566acd2fe8d38aa19427e71f98a473474f2f13f06f97c20d58cc3f54b8bd0d272f42b695dd7e89a8c22",
|
|
|
|
+ true,
|
|
|
|
+ false,
|
|
|
|
+ false,
|
|
|
|
+ },
|
|
|
|
+ // 0 < S < L, mixed-order A, small-order R (non-canonical R, reduced for hash)
|
|
|
|
+ {
|
|
|
|
+ "f7badec5b8abeaf699583992219b7b223f1df3fbbea919844e3f7c554a43dd43",
|
|
|
|
+ "9bedc267423725d473888631ebf45988bad3db83851ee85c85e241a07d148b41",
|
|
|
|
+ "ecffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff03be9678ac102edcd92b0210bb34d7428d12ffc5df5f37e359941266a4e35f0f",
|
|
|
|
+ true,
|
|
|
|
+ false,
|
|
|
|
+ false,
|
|
|
|
+ },
|
|
|
|
+ // 0 < S < L, mixed-order A, small-order R (non-canonical R, not reduced for hash)
|
|
|
|
+ {
|
|
|
|
+ "f7badec5b8abeaf699583992219b7b223f1df3fbbea919844e3f7c554a43dd43",
|
|
|
|
+ "9bedc267423725d473888631ebf45988bad3db83851ee85c85e241a07d148b41",
|
|
|
|
+ "ecffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffca8c5b64cd208982aa38d4936621a4775aa233aa0505711d8fdcfdaa943d4908",
|
|
|
|
+ true,
|
|
|
|
+ false,
|
|
|
|
+ false,
|
|
|
|
+ },
|
|
|
|
+ // 0 < S < L, small-order A, mixed-order R (non-canonical A, reduced for hash)
|
|
|
|
+ {
|
|
|
|
+ "ecffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff",
|
|
|
|
+ "e96b7021eb39c1a163b6da4e3093dcd3f21387da4cc4572be588fafae23c155b",
|
|
|
|
+ "a9d55260f765261eb9b84e106f665e00b867287a761990d7135963ee0a7d59dca5bb704786be79fc476f91d3f3f89b03984d8068dcf1bb7dfc6637b45450ac04",
|
|
|
|
+ false,
|
|
|
|
+ false,
|
|
|
|
+ false,
|
|
|
|
+ },
|
|
|
|
+ // 0 < S < L, small-order A, mixed-order R (non-canonical A, not reduced for hash)
|
|
|
|
+ {
|
|
|
|
+ "ecffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff",
|
|
|
|
+ "39a591f5321bbe07fd5a23dc2f39d025d74526615746727ceefd6e82ae65c06f",
|
|
|
|
+ "a9d55260f765261eb9b84e106f665e00b867287a761990d7135963ee0a7d59dca5bb704786be79fc476f91d3f3f89b03984d8068dcf1bb7dfc6637b45450ac04",
|
|
|
|
+ false,
|
|
|
|
+ false,
|
|
|
|
+ false,
|
|
|
|
+ },
|
|
|
|
+ }
|
|
|
|
+ for v, i in test_vectors_speccheck {
|
|
|
|
+ pub_bytes, _ := hex.decode(transmute([]byte)(v.pub_key), context.temp_allocator)
|
|
|
|
+ msg_bytes, _ := hex.decode(transmute([]byte)(v.msg), context.temp_allocator)
|
|
|
|
+ sig_bytes, _ := hex.decode(transmute([]byte)(v.sig), context.temp_allocator)
|
|
|
|
+
|
|
|
|
+ pub_key: ed25519.Public_Key
|
|
|
|
+ ok := ed25519.public_key_set_bytes(&pub_key, pub_bytes)
|
|
|
|
+ tc.expect(
|
|
|
|
+ t,
|
|
|
|
+ ok == v.pub_key_ok,
|
|
|
|
+ fmt.tprintf(
|
|
|
|
+ "speccheck/%d: Expected %s to be a (in)valid public key, got %v",
|
|
|
|
+ i,
|
|
|
|
+ v.pub_key,
|
|
|
|
+ ok,
|
|
|
|
+ ),
|
|
|
|
+ )
|
|
|
|
+
|
|
|
|
+ // If A is rejected for being non-canonical, skip signature check.
|
|
|
|
+ if !v.pub_key_ok {
|
|
|
|
+ continue
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ ok = ed25519.verify(&pub_key, msg_bytes, sig_bytes)
|
|
|
|
+ tc.expect(
|
|
|
|
+ t,
|
|
|
|
+ ok == v.sig_ok,
|
|
|
|
+ fmt.tprintf(
|
|
|
|
+ "speccheck/%d Expected %v for verify(%s, %s, %s)",
|
|
|
|
+ i,
|
|
|
|
+ v.sig_ok,
|
|
|
|
+ v.pub_key,
|
|
|
|
+ v.msg,
|
|
|
|
+ v.sig,
|
|
|
|
+ ),
|
|
|
|
+ )
|
|
|
|
+
|
|
|
|
+ // If the signature is accepted, skip the relaxed signature check.
|
|
|
|
+ if v.sig_ok {
|
|
|
|
+ continue
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ ok = ed25519.verify(&pub_key, msg_bytes, sig_bytes, true)
|
|
|
|
+ tc.expect(
|
|
|
|
+ t,
|
|
|
|
+ ok == v.sig_ok_relaxed,
|
|
|
|
+ fmt.tprintf(
|
|
|
|
+ "speccheck/%d Expected %v for verify(%s, %s, %s, true)",
|
|
|
|
+ i,
|
|
|
|
+ v.sig_ok_relaxed,
|
|
|
|
+ v.pub_key,
|
|
|
|
+ v.msg,
|
|
|
|
+ v.sig,
|
|
|
|
+ ),
|
|
|
|
+ )
|
|
|
|
+ }
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+@(test)
|
|
|
|
+test_x25519 :: proc(t: ^testing.T) {
|
|
|
|
+ tc.log(t, "Testing X25519")
|
|
|
|
+
|
|
|
|
+ // Local copy of this so that the base point doesn't need to be exported.
|
|
|
|
+ _BASE_POINT: [32]byte = {
|
|
|
|
+ 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
|
|
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ test_vectors := []struct {
|
|
|
|
+ scalar: string,
|
|
|
|
+ point: string,
|
|
|
|
+ product: string,
|
|
|
|
+ } {
|
|
|
|
+ // Test vectors from RFC 7748
|
|
|
|
+ {
|
|
|
|
+ "a546e36bf0527c9d3b16154b82465edd62144c0ac1fc5a18506a2244ba449ac4",
|
|
|
|
+ "e6db6867583030db3594c1a424b15f7c726624ec26b3353b10a903a6d0ab1c4c",
|
|
|
|
+ "c3da55379de9c6908e94ea4df28d084f32eccf03491c71f754b4075577a28552",
|
|
|
|
+ },
|
|
|
|
+ {
|
|
|
|
+ "4b66e9d4d1b4673c5ad22691957d6af5c11b6421e0ea01d42ca4169e7918ba0d",
|
|
|
|
+ "e5210f12786811d3f4b7959d0538ae2c31dbe7106fc03c3efc4cd549c715a493",
|
|
|
|
+ "95cbde9476e8907d7aade45cb4b873f88b595a68799fa152e6f8f7647aac7957",
|
|
|
|
+ },
|
|
|
|
+ }
|
|
|
|
+ for v, _ in test_vectors {
|
|
|
|
+ scalar, _ := hex.decode(transmute([]byte)(v.scalar), context.temp_allocator)
|
|
|
|
+ point, _ := hex.decode(transmute([]byte)(v.point), context.temp_allocator)
|
|
|
|
+
|
|
|
|
+ derived_point: [x25519.POINT_SIZE]byte
|
|
|
|
+ x25519.scalarmult(derived_point[:], scalar[:], point[:])
|
|
|
|
+ derived_point_str := string(hex.encode(derived_point[:], context.temp_allocator))
|
|
|
|
+
|
|
|
|
+ tc.expect(
|
|
|
|
+ t,
|
|
|
|
+ derived_point_str == v.product,
|
|
|
|
+ fmt.tprintf(
|
|
|
|
+ "Expected %s for %s * %s, but got %s instead",
|
|
|
|
+ v.product,
|
|
|
|
+ v.scalar,
|
|
|
|
+ v.point,
|
|
|
|
+ derived_point_str,
|
|
|
|
+ ),
|
|
|
|
+ )
|
|
|
|
+
|
|
|
|
+ // Abuse the test vectors to sanity-check the scalar-basepoint multiply.
|
|
|
|
+ p1, p2: [x25519.POINT_SIZE]byte
|
|
|
|
+ x25519.scalarmult_basepoint(p1[:], scalar[:])
|
|
|
|
+ x25519.scalarmult(p2[:], scalar[:], _BASE_POINT[:])
|
|
|
|
+ p1_str := string(hex.encode(p1[:], context.temp_allocator))
|
|
|
|
+ p2_str := string(hex.encode(p2[:], context.temp_allocator))
|
|
|
|
+ tc.expect(
|
|
|
|
+ t,
|
|
|
|
+ p1_str == p2_str,
|
|
|
|
+ fmt.tprintf(
|
|
|
|
+ "Expected %s for %s * basepoint, but got %s instead",
|
|
|
|
+ p2_str,
|
|
|
|
+ v.scalar,
|
|
|
|
+ p1_str,
|
|
|
|
+ ),
|
|
|
|
+ )
|
|
|
|
+ }
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+@(private)
|
|
|
|
+ge_str :: proc(ge: ^ristretto255.Group_Element) -> string {
|
|
|
|
+ b: [ristretto255.ELEMENT_SIZE]byte
|
|
|
|
+ ristretto255.ge_bytes(ge, b[:])
|
|
|
|
+ return string(hex.encode(b[:], context.temp_allocator))
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+@(private)
|
|
|
|
+fe_str :: proc(fe: ^field.Tight_Field_Element) -> string {
|
|
|
|
+ b: [32]byte
|
|
|
|
+ field.fe_to_bytes(&b, fe)
|
|
|
|
+ return string(hex.encode(b[:], context.temp_allocator))
|
|
|
|
+}
|