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fdh_rsa.ml

JJ: Description from source commit:
use Eqaf
This commit is contained in:
swrup 2026-02-24 19:31:39 +01:00
parent 61150598d2
commit 854d4ce583
4 changed files with 106 additions and 117 deletions
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23
test/test_crypto.ml
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@ -77,7 +77,7 @@ let () =
let xts = salt |> decode in
let ikm = ikm |> decode in
let ctx = ctx |> decode in
let okm = Crypto.FDH_RSA.Kdf.kdf ~xts ~ikm ~ctx ~len:out_len in
let okm = Fdh_rsa.Kdf.kdf ~xts ~ikm ~ctx ~len:out_len in
let okm = okm |> encode in
assert (okm = out);
@ -99,12 +99,27 @@ let () =
"3KHKZJZ30ABB4E56MA2V0EQWGCWH0QQG9P2ZHYHR186C5HZXJMM4N9WXAQTKS94QSV9Y17GGNXN5MB1PZZFG7Q0FY88QPKKRG4MYCPSMTZK5W59R0MJVNJ4P4AQM96TDG5W7RV8GSNR1QQZ1GNHW3CX6D6ZRTMXB2NKB5SSYTDJS79F5ZFBRZ4HVED9JBBPWSR79KVV5QQ4APBGHBCKGMF9NJJS53A1BVYHDEVYAGFYF2SNEP827ZP50FKJ5GKGV8NQ15ESEZ69AT7GJG0T3TZVENY2YN9CVR98W3BKEZ53J7VTANARG8SJS8AMJQ7S23P5HRJ7XE9KTNRNXKH49MXV9JHHYE5535N7AGWEKR47SBCGNF44Z7XJ9RV5BQV12ZRJKN4HBZQHDNCMH3QKX9Z6G64"
in
let open Crypto in
let msg = message_hash |> decode in
let pub =
rsa_public_key |> decode |> RsaPublicKey.of_octets |> Result.get_ok
in
let bks = blinding_key_secret |> decode in
let s = FDH_RSA.rsa_blind pub ~bks ~msg |> encode in
assert (s = blinded_message);
let msg = decode message_hash in
let bmsg = Fdh_rsa.blind_msg pub ~bks msg in
assert (encode bmsg = blinded_message);
()
let () = Mirage_crypto_rng_unix.use_default ()
let () =
let open Crypto in
let priv, pub = RsaPrivateKey.generate ~bits:2048 () in
let bks = "deadbeaf" in
let msg = "uhuh." in
let bmsg = Fdh_rsa.blind_msg pub ~bks msg in
let bsig = Fdh_rsa.sign ~key:priv bmsg in
let sig_ = Fdh_rsa.unblind_sig pub ~bks bsig in
let res = Fdh_rsa.verify ~key:pub sig_ ~msg in
assert (Result.is_ok res);
()