SHA

    Each exported function (at the time of this writing, SHA-1, SHA-2 224, 256, 384 and 512, and SHA-3 224, 256, 384 and 512 functions are implemented) takes in either an , a ByteString or an IO object. This makes it trivial to checksum a file:

    1. shell> cat /tmp/test.txt
    2. test
    3. julia> using SHA
    5. julia> open("/tmp/test.txt") do f
    6.            sha2_256(f)
    7.        end
    8.  0x9f
    9.  0x86
    11.  0x81
    12.  0x88
    13.  0x4c
    14.  0x7d
    15.     ⋮
    16.  0x5d
    17.  0x6c
    18.  0x15
    19.  0xb0
    20.  0xf0
    21.  0x0a

    Due to the colloquial usage of sha256 to refer to sha2_256, convenience functions are provided, mapping shaxxx() function calls to sha2_xxx(). For SHA-3, no such colloquialisms exist and the user must use the full sha3_xxx() names.

    Note that, at the time of this writing, the SHA3 code is not optimized, and as such is roughly an order of magnitude slower than SHA2.