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fix: check that data is large enough to fit header and mac (#7118)

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This commit is contained in:
Dan Cline
2024-03-12 12:09:15 -04:00
committed by GitHub
parent f75bebd8d5
commit eb6828350d
1 changed files with 7 additions and 0 deletions
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7
crates/net/ecies/src/algorithm.rs
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@ -637,6 +637,13 @@ impl ECIES {
}
pub fn read_header(&mut self, data: &mut [u8]) -> Result<usize, ECIESError> {
// If the data is not large enough to fit the header and mac bytes, return an error
//
// The header is 16 bytes, and the mac is 16 bytes, so the data must be at least 32 bytes
if data.len() < 32 {
return Err(ECIESErrorImpl::InvalidHeader.into())
}
let (header_bytes, mac_bytes) = split_at_mut(data, 16)?;
let header = HeaderBytes::from_mut_slice(header_bytes);
let mac = B128::from_slice(&mac_bytes[..16]);