Convert a binary string into a hexadecimal string without cache-timing leaks
ParagonIE_Sodium_Core_Util::abs
ParagonIE_Sodium_Core_SipHash::sipHash24
Implements Siphash-2-4 using only 32-bit numbers.
ParagonIE_Sodium_Core_SipHash::rotl_64
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ParagonIE_Sodium_Core_SipHash::add
Add two 32 bit integers representing a 64-bit integer.