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Dilithium: fixes

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Fixes to hint error dectection.
Fix public key decode to fail when DER length is zero for the public key
data.
This commit is contained in:
Sean Parkinson
2024-09-23 09:05:17 +10:00
parent bc6881974d
commit 67528f91b3
1 changed files with 2 additions and 2 deletions
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4
wolfcrypt/src/dilithium.c
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@@ -3411,7 +3411,7 @@ static int dilithium_check_hint(const byte* h, byte k, byte omega)
}
}
/* Ensure the last hint is less than the current hint. */
else if (h[i - 1] > h[i]) {
else if (h[i - 1] >= h[i]) {
ret = SIG_VERIFY_E;
break;
}
@@ -9654,7 +9654,7 @@ int wc_Dilithium_PublicKeyDecode(const byte* input, word32* inOutIdx,
ret = dilitihium_get_der_length(input, &idx, &length, inSz);
}
if (ret == 0) {
if (input[idx] != 0) {
if ((input[idx] != 0) || (length == 0)) {
ret = ASN_PARSE_E;
}
idx++;