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add check on hash size passed in

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This commit is contained in:
Jacob Barthelmeh
2022-03-02 16:52:04 -07:00
parent a5ce2a33eb
commit 56de8cd622
1 changed files with 5 additions and 0 deletions
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5
wolfcrypt/src/ecc.c
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@@ -6311,6 +6311,11 @@ int wc_ecc_gen_deterministic_k(const byte* hash, word32 hashSz,
return BAD_FUNC_ARG;
}
if (hashSz != WC_SHA256_DIGEST_SIZE) {
WOLFSSL_MSG("Currently only SHA256 digest is supported");
return BAD_FUNC_ARG;
}
if (mp_unsigned_bin_size(priv) > MAX_ECC_BYTES) {
WOLFSSL_MSG("private key larger than max expected!");
return BAD_FUNC_ARG;