A first codeword may be constructed from a cache tag in a cache and an error correction code corresponding to the cache tag. A second codeword may be constructed from a search tag and an error correction code corresponding to the search tag. A hamming distance may be calculated between the first codeword and the second codeword. If the hamming distance is less than or equal to a threshold, a cache hit may be signaled. If the hamming distance is above the threshold, a cache miss may be signaled.