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Merge pull request #141 from julek-wolfssl/fenrir-dilithium-ctxlen-fix 

Use byte ctxLen in wc_dilithium_verify_ctx_msg cdef (F-4014)
pull/138/head
philljj 2026-07-29 23:25:42 -05:00 committed by GitHub
parent f82dbb6e11 2fea30cd32
commit b297f8a00b
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GPG Key ID: B5690EEEBB952194
2 changed files with 5 additions and 1 deletions
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2
scripts/build_ffi.py
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@ -1350,7 +1350,7 @@ def build_ffi(local_wolfssl, features):
int wc_dilithium_import_public(const byte* in, word32 inLen, dilithium_key* key);
int wc_dilithium_sign_ctx_msg(const byte* ctx, byte ctxLen, const byte* msg, word32 msgLen, byte* sig, word32* sigLen, dilithium_key* key, WC_RNG* rng);
int wc_dilithium_sign_ctx_msg_with_seed(const byte* ctx, byte ctxLen, const byte* msg, word32 msgLen, byte* sig, word32* sigLen, dilithium_key* key, const byte* seed);
int wc_dilithium_verify_ctx_msg(const byte* sig, word32 sigLen, const byte* ctx, word32 ctxLen, const byte* msg, word32 msgLen, int* res, dilithium_key* key);
int wc_dilithium_verify_ctx_msg(const byte* sig, word32 sigLen, const byte* ctx, byte ctxLen, const byte* msg, word32 msgLen, int* res, dilithium_key* key);
typedef dilithium_key MlDsaKey;
int wc_MlDsaKey_GetPrivLen(MlDsaKey* key, int* len);
int wc_MlDsaKey_GetPubLen(MlDsaKey* key, int* len);

4
wolfcrypt/ciphers.py
View File

@ -2364,6 +2364,10 @@ if _lib.ML_DSA_ENABLED:
if ctx is not None:
ctx_bytestype = t2b(ctx)
if len(ctx_bytestype) > 255:
raise ValueError(
f"context length {len(ctx_bytestype)} too large: must be 255 or less"
)
ret = _lib.wc_dilithium_verify_ctx_msg(
sig_bytestype,
len(sig_bytestype),