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@ -25,7 +25,7 @@ pub struct DiscreteLogInstance {
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pub target: RistrettoPoint,
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}
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/// Solves the discrete log instance using a 18/14 bit offline/online split
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/// Solves the discrete log instance using a 16/16 bit offline/online split
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impl DiscreteLogInstance {
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/// Solves the discrete log problem under the assumption that the solution
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/// is a 32-bit number.
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@ -34,6 +34,7 @@ impl DiscreteLogInstance {
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self.decode_u32_online(&hashmap)
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}
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/// Builds a HashMap of 2^16 elements
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pub fn decode_u32_precomputation(generator: RistrettoPoint) -> HashMap<HashableRistretto, u32> {
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let mut hashmap = HashMap::new();
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@ -50,6 +51,8 @@ impl DiscreteLogInstance {
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hashmap
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}
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/// Solves the discrete log instance using the pre-computed HashMap by enumerating through 2^16
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/// possible solutions
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pub fn decode_u32_online(self, hashmap: &HashMap<HashableRistretto, u32>) -> Option<u32> {
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// iterator for 0G, -1G, -2G, ...
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let ristretto_iter = RistrettoIterator::new(
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@ -77,6 +80,7 @@ impl DiscreteLogInstance {
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self.decode_u32_online_alt(&hashmap)
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}
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/// Builds a HashMap of 2^18 elements
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pub fn decode_u32_precomputation_alt(
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generator: RistrettoPoint,
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) -> HashMap<HashableRistretto, u32> {
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@ -95,6 +99,8 @@ impl DiscreteLogInstance {
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hashmap
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}
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/// Solves the discrete log instance using the pre-computed HashMap by enumerating through 2^14
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/// possible solutions
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pub fn decode_u32_online_alt(self, hashmap: &HashMap<HashableRistretto, u32>) -> Option<u32> {
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// iterator for 0G, -1G, -2G, ...
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let ristretto_iter = RistrettoIterator::new(
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