openvm_stark_sdk::cost_estimate

Struct MmcsVerifyBatchCostEstimate

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pub struct MmcsVerifyBatchCostEstimate {
    pub num_f_to_hash: usize,
    pub num_compress: usize,
}
Expand description

Mmcs batch verification consist of hashing the leaf and then a normal Merkle proof. We separate the cost of hashing (which requires proper padding to be a crytographic hash) from the cost of 2-to-1 compression function on the hash digest because in tree proofs the internal layers do not need to use a compression function with padding.

Currently the estimate ignores the additional details of hashing in matrices of different heights.

Fields§

§num_f_to_hash: usize

Hash cost in terms of number of field elments to hash. To convert to true hash cost, it depends on the rate of the cryptographic hash.

§num_compress: usize

Number of calls of 2-to-1 compression function.

Implementations§

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impl MmcsVerifyBatchCostEstimate

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pub fn from_dim(width: usize, max_log_height_lde: usize) -> Self

width is number of base field columns. max_log_height_lde is the height of the MMCS (which includes blowup)

Trait Implementations§

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impl Add for MmcsVerifyBatchCostEstimate

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type Output = MmcsVerifyBatchCostEstimate

The resulting type after applying the + operator.
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fn add(self, rhs: Self) -> Self::Output

Performs the + operation. Read more
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impl Clone for MmcsVerifyBatchCostEstimate

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fn clone(&self) -> MmcsVerifyBatchCostEstimate

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for MmcsVerifyBatchCostEstimate

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Copy for MmcsVerifyBatchCostEstimate

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