blockworks-foundation
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solana-with-rpc-optimizations
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This commit is contained in:
Michael Vines 2021-10-01 07:40:09 -07:00
parent 667e72144e
commit 409b55ad81
1 changed files with 7 additions and 1 deletions
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8
zk-token-sdk/src/encryption/dlog.rs
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@ -25,7 +25,7 @@ pub struct DiscreteLogInstance {
pub target: RistrettoPoint, pub target: RistrettoPoint,
} }
/// Solves the discrete log instance using a 18/14 bit offline/online split /// Solves the discrete log instance using a 16/16 bit offline/online split
impl DiscreteLogInstance { impl DiscreteLogInstance {
/// Solves the discrete log problem under the assumption that the solution /// Solves the discrete log problem under the assumption that the solution
/// is a 32-bit number. /// is a 32-bit number.
@ -34,6 +34,7 @@ impl DiscreteLogInstance {
self.decode_u32_online(&hashmap) self.decode_u32_online(&hashmap)
} }
/// Builds a HashMap of 2^16 elements
pub fn decode_u32_precomputation(generator: RistrettoPoint) -> HashMap<HashableRistretto, u32> { pub fn decode_u32_precomputation(generator: RistrettoPoint) -> HashMap<HashableRistretto, u32> {
let mut hashmap = HashMap::new(); let mut hashmap = HashMap::new();
@ -50,6 +51,8 @@ impl DiscreteLogInstance {
hashmap hashmap
} }
/// Solves the discrete log instance using the pre-computed HashMap by enumerating through 2^16
/// possible solutions
pub fn decode_u32_online(self, hashmap: &HashMap<HashableRistretto, u32>) -> Option<u32> { pub fn decode_u32_online(self, hashmap: &HashMap<HashableRistretto, u32>) -> Option<u32> {
// iterator for 0G, -1G, -2G, ... // iterator for 0G, -1G, -2G, ...
let ristretto_iter = RistrettoIterator::new( let ristretto_iter = RistrettoIterator::new(
@ -77,6 +80,7 @@ impl DiscreteLogInstance {
self.decode_u32_online_alt(&hashmap) self.decode_u32_online_alt(&hashmap)
} }
/// Builds a HashMap of 2^18 elements
pub fn decode_u32_precomputation_alt( pub fn decode_u32_precomputation_alt(
generator: RistrettoPoint, generator: RistrettoPoint,
) -> HashMap<HashableRistretto, u32> { ) -> HashMap<HashableRistretto, u32> {
@ -95,6 +99,8 @@ impl DiscreteLogInstance {
hashmap hashmap
} }
/// Solves the discrete log instance using the pre-computed HashMap by enumerating through 2^14
/// possible solutions
pub fn decode_u32_online_alt(self, hashmap: &HashMap<HashableRistretto, u32>) -> Option<u32> { pub fn decode_u32_online_alt(self, hashmap: &HashMap<HashableRistretto, u32>) -> Option<u32> {
// iterator for 0G, -1G, -2G, ... // iterator for 0G, -1G, -2G, ...
let ristretto_iter = RistrettoIterator::new( let ristretto_iter = RistrettoIterator::new(