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GHC 9.14.1 · lts/ghc-9.14.x · 45dd537 · 2026-10-11

Modulelibsodium-bindings-0.0.3.0Haskell2010

LibSodium.Bindings.Comparison

Secure comparison functions, designed to run in constant time for a given input length.

3 values

Packagelibsodium-bindings-0.0.3.0
Exports3
LanguageHaskell2010
LicenceBSD-3-Clause
SourceComparison.hs

valuesodiumMemcmp

:: Ptr CUChar
First location with data to compare
-> Ptr CUChar
Second location with data to compare
-> CSize
How many bytes to compare
-> CInt
0 if all bytes match, -1 otherwise

Compares the given amount of bytes at the given locations for equality. Constant-time for any given length.

See: sodium_memcmp()

valuesodiumCompare

:: Ptr CUChar
First pointer data (lhs)
-> Ptr CUChar
Second pointer data (rhs)
-> CSize
Bytes to compare
-> IO CInt
Comparison result lhs == rhs -> 0 lhs - -1 lhs > rhs -> 1

Lexicographically compares the requested bytes of the given pointers in constant time.

See: sodium_compare()

valuesodiumIsZero

:: Ptr CUChar
Location with data to check
-> CSize
How many bytes to check
-> CInt
1 if all the bytes were zeroes, 0 otherwise

Checks if the given number of bytes at the given location are all equal to zero. Constant-time for any given length.

See: sodium_is_zero()