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fed-prims: Phase E — Ed25519 verify (RFC 8032), pure-OCaml bignum + edwards25519
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Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
giles
2026-05-18 17:05:59 +00:00
parent d8b57784fe
commit 76d1e9f53a
4 changed files with 352 additions and 2 deletions
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45
hosts/ocaml/bin/run_tests.ml
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@@ -1422,6 +1422,51 @@ let run_foundation_tests () =
| String s -> String.length s > 1 && s.[0] = 'b'
| _ -> false));
Printf.printf "\nSuite: ed25519\n";
let hx = Sx_ed25519.unhex in
let edv pk msg sg = call "ed25519-verify"
[String (hx pk); String (hx msg); String (hx sg)] in
(* RFC 8032 §7.1 TEST 1-3 (deterministic; re-derived independently). *)
assert_eq "ed25519 RFC T1"
(Bool true)
(edv "d75a980182b10ab7d54bfed3c964073a0ee172f3daa62325af021a68f707511a"
""
"e5564300c360ac729086e2cc806e828a84877f1eb8e5d974d873e065224901555fb8821590a33bacc61e39701cf9b46bd25bf5f0595bbe24655141438e7a100b");
assert_eq "ed25519 RFC T2"
(Bool true)
(edv "3d4017c3e843895a92b70aa74d1b7ebc9c982ccf2ec4968cc0cd55f12af4660c"
"72"
"92a009a9f0d4cab8720e820b5f642540a2b27b5416503f8fb3762223ebdb69da085ac1e43e15996e458f3613d0f11d8c387b2eaeb4302aeeb00d291612bb0c00");
assert_eq "ed25519 RFC T3"
(Bool true)
(edv "fc51cd8e6218a1a38da47ed00230f0580816ed13ba3303ac5deb911548908025"
"af82"
"6291d657deec24024827e69c3abe01a30ce548a284743a445e3680d7db5ac3ac18ff9b538d16f290ae67f760984dc6594a7c15e9716ed28dc027beceea1ec40a");
(* Tampered message -> false. *)
assert_eq "ed25519 tampered msg"
(Bool false)
(edv "fc51cd8e6218a1a38da47ed00230f0580816ed13ba3303ac5deb911548908025"
"af83"
"6291d657deec24024827e69c3abe01a30ce548a284743a445e3680d7db5ac3ac18ff9b538d16f290ae67f760984dc6594a7c15e9716ed28dc027beceea1ec40a");
(* Tampered signature -> false. *)
assert_eq "ed25519 tampered sig"
(Bool false)
(edv "d75a980182b10ab7d54bfed3c964073a0ee172f3daa62325af021a68f707511a"
""
"f5564300c360ac729086e2cc806e828a84877f1eb8e5d974d873e065224901555fb8821590a33bacc61e39701cf9b46bd25bf5f0595bbe24655141438e7a100b");
(* Total: wrong-length pubkey / sig -> false, no exception. *)
assert_eq "ed25519 short pubkey"
(Bool false)
(call "ed25519-verify" [String "abc"; String ""; String (String.make 64 '\000')]);
assert_eq "ed25519 short sig"
(Bool false)
(call "ed25519-verify"
[String (hx "d75a980182b10ab7d54bfed3c964073a0ee172f3daa62325af021a68f707511a");
String ""; String "short"]);
assert_eq "ed25519 non-string args"
(Bool false)
(call "ed25519-verify" [Integer 1; Integer 2; Integer 3]);
Printf.printf "\nSuite: vm-extension-dispatch\n";
let make_bc op = ({
vc_arity = 0; vc_rest_arity = -1; vc_locals = 0;