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feat: extend margin

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This commit is contained in:
Mårten Blankfors
2024-04-16 09:18:27 +02:00
parent 54dcbb7d52
commit 23a06a3fab
1 changed files with 4 additions and 4 deletions
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8
libsigner/src/messages.rs
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@@ -402,10 +402,10 @@ impl StacksMessageCodec for SignerMessage {
}
}
SignerMessageTypePrefix::EncryptedSignerState => {
// Typically the size of the signer state is much smaller, but in the fully degenerate case the size of dkg shares is
// (2800 + 2800) * 32 (threshold * shares * 32).
// The signer state holds some additional information, so we're adding a factor 4 to have some margin
let max_encrypted_state_size = (2800 + 2800) * 32 * 4;
// Typically the size of the signer state is much smaller, but in the fully degenerate case the size of the persisted state is
// 2800 * 32 * 4 + C for some small constant C.
// To have some margin, we're expanding the left term with an additional factor 4
let max_encrypted_state_size = 2800 * 32 * 4 * 4;
let mut bound_reader = BoundReader::from_reader(fd, max_encrypted_state_size);
let encrypted_state = read_next::<_, _>(&mut bound_reader)?;
SignerMessage::EncryptedSignerState(encrypted_state)