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Updating existing TX size limit test for the new DKG parameters

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Luke Parker
2024-08-06 05:43:56 -04:00
parent dbf32d515f
commit 01de73efd9
1 changed files with 18 additions and 16 deletions
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34
coordinator/src/tests/tributary/mod.rs
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@@ -84,23 +84,25 @@ fn tx_size_limit() {
use tributary::TRANSACTION_SIZE_LIMIT; use tributary::TRANSACTION_SIZE_LIMIT;
let max_dkg_coefficients = (MAX_KEY_SHARES_PER_SET * 2).div_ceil(3) + 1; let max_dkg_coefficients = (MAX_KEY_SHARES_PER_SET * 2).div_ceil(3) + 1;
let max_key_shares_per_individual = MAX_KEY_SHARES_PER_SET - max_dkg_coefficients; // n coefficients
// Handwave the DKG Commitments size as the size of the commitments to the coefficients and // 2 ECDH values per recipient, and the encrypted share
// 1024 bytes for all overhead let elements_outside_of_proof = max_dkg_coefficients + ((2 + 1) * MAX_KEY_SHARES_PER_SET);
let handwaved_dkg_commitments_size = (max_dkg_coefficients * MAX_KEY_LEN) + 1024; // Then Pedersen Vector Commitments for each DH done, and the associated overhead in the proof
assert!( // It's handwaved as one commitment per DH, where we do 2 per coefficient and 1 for the explicit
u32::try_from(TRANSACTION_SIZE_LIMIT).unwrap() >= // ECDHs
(handwaved_dkg_commitments_size * max_key_shares_per_individual) let vector_commitments = (2 * max_dkg_coefficients) + (2 * MAX_KEY_SHARES_PER_SET);
); // Then we have commitments to the `t` polynomial of length 2 + 2 nc, where nc is the amount of
// commitments
let t_commitments = 2 + (2 * vector_commitments);
// The remainder of the proof should be ~30 elements
let proof_elements = 30;
// Encryption key, PoP (2 elements), message let handwaved_dkg_size =
let elements_per_share = 4; ((elements_outside_of_proof + vector_commitments + t_commitments + proof_elements) *
let handwaved_dkg_shares_size = MAX_KEY_LEN) +
(elements_per_share * MAX_KEY_LEN * MAX_KEY_SHARES_PER_SET) + 1024; 1024;
assert!( // Further scale by two in case of any errors in the above
u32::try_from(TRANSACTION_SIZE_LIMIT).unwrap() >= assert!(u32::try_from(TRANSACTION_SIZE_LIMIT).unwrap() >= (2 * handwaved_dkg_size));
(handwaved_dkg_shares_size * max_key_shares_per_individual)
);
} }
#[test] #[test]