ark::core::Fnv1aHasher

Defined in header “ark/core/hash.hh”.

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This is a hasher that can take in arbitrary data and produce a FNV1A hash (64-bit). You can write to it multiple times before you finalize the hash value.

Methods

• Fnv1aHasher()
  Constructor. Initializes a new hasher.

• void add_data(const void * data, size_t length)
  Adds the new data to the hash. The hash is updated with ’length’ bytes.

   std::vector<uint8_t> data1 = {0x07, 0x1e, 0x62, 0x37, 0x2c, 0x02, 0x40, 0x42, 0x14, 0x69};
  
   Fnv1aHasher hasher;
   hasher.add_data(data1.data(), data1.size());
   EXPECT_EQ(hasher.finalize(), 0ULL);
  

• uint64_t finalize()
  Finalizes the hash and returns the current working value.

   Fnv1aHasher hasher;
  
   hasher.add_data("hello", 5);
   hasher.add_data(" ", 1);
   hasher.add_data("world", 5);
  
   EXPECT_EQ(hasher.finalize(), 0x779a65e7023cd2e7ULL);