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This commit is contained in:
Kamran Khan
2020-12-10 21:26:44 -08:00
parent 9c9f9efcce
commit a7eb38aac8
1 changed files with 2 additions and 1 deletions
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3
src/ctap/apdu.rs
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@@ -174,7 +174,8 @@ impl TryFrom<&[u8]> for APDU {
return Err(ApduStatusCode::SW_WRONG_LENGTH); return Err(ApduStatusCode::SW_WRONG_LENGTH);
} }
let extended_apdu_le_len: usize = payload.len() - extended_apdu_lc - 3; let extended_apdu_le_len: usize =
payload.len().checked_sub(extended_apdu_lc + 3).unwrap_or(0);
if extended_apdu_le_len > 3 { if extended_apdu_le_len > 3 {
return Err(ApduStatusCode::SW_WRONG_LENGTH); return Err(ApduStatusCode::SW_WRONG_LENGTH);
} }