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Added link to Weblate from translatable strings once the translator mode
is activated in the workspace settings. This required the addition of a new lib (in source form) for a SipHash implementation.
This commit is contained in:
106
siphash-zackehh/src/main/java/com/zackehh/siphash/SipHash.java
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106
siphash-zackehh/src/main/java/com/zackehh/siphash/SipHash.java
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package com.zackehh.siphash;
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import static com.zackehh.siphash.SipHashConstants.*;
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/**
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* Main entry point for SipHash, providing a basic hash
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* interface. Assuming you have your full String to hash,
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* you can simply provide it to ${@link SipHash#hash(byte[])}.
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*
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* This class can be initialized and stored in case the
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* developer wishes to use the same key over and over again.
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*
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* This avoids the overhead of having to create the initial
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* key over and over again.
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*
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* <pre>
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* {@code
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* List<String> inputs = Arrays.asList("input1", "input2", "input3");
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* SipHash hasher = new SipHash("this key is mine".getBytes());
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* for (int i = 0; i < inputs.size(); i++) {
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* hasher.hash(inputs.get(i));
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* }
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* }
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* </pre>
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*/
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public class SipHash {
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/**
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* The values of SipHash-c-d, to determine which of the SipHash
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* family we're using for this hash.
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*/
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private final int c, d;
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/**
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* Initial seeded value of v0.
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*/
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private final long v0;
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/**
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* Initial seeded value of v1.
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*/
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private final long v1;
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/**
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* Initial seeded value of v2.
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*/
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private final long v2;
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/**
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* Initial seeded value of v3.
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*/
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private final long v3;
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/**
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* Accepts a 16 byte key input, and uses it to initialize
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* the state of the hash. This uses the default values of
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* c/d, meaning that we default to SipHash-2-4.
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*
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* @param key a 16 byte key input
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*/
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public SipHash(byte[] key){
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this(key, DEFAULT_C, DEFAULT_D);
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}
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/**
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* Accepts a 16 byte key input, and uses it to initialize
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* the state of the hash. This constructor allows for
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* providing the c/d values, allowing the developer to
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* select any of the SipHash family to use for hashing.
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*
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* @param key a 16 byte key input
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* @param c the number of compression rounds
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* @param d the number of finalization rounds
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*/
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public SipHash(byte[] key, int c, int d){
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this.c = c;
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this.d = d;
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SipHashKey hashKey = new SipHashKey(key);
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this.v0 = (INITIAL_V0 ^ hashKey.k0);
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this.v1 = (INITIAL_V1 ^ hashKey.k1);
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this.v2 = (INITIAL_V2 ^ hashKey.k0);
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this.v3 = (INITIAL_V3 ^ hashKey.k1);
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}
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/**
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* The basic hash implementation provided in the library.
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* Assuming you have your full input, you can provide it and
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* it will be hashed based on the values which were provided
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* to the constructor of this class.
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*
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* @param data the bytes to hash
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* @return a ${@link SipHashResult} instance
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*/
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public SipHashResult hash(byte[] data) {
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SipHashDigest digest = new SipHashDigest(v0, v1, v2, v3, c, d);
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for (byte aData : data) {
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digest.update(aData);
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}
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return digest.finish();
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}
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}
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