Zig 0.17.0-dev (Split by item)

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iterativeApi

verify.iterativeApi

pub fn iterativeApi(comptime Hash: anytype) !void

File

lib/std/hash/verify.zig:46

Code

pub fn iterativeApi(comptime Hash: anytype) !void {
    // Sum(1..32) = 528
    var buf: [528]u8 = @splat(0);
    var len: usize = 0;
    const seed = 0;

    var hasher = initMaybeSeed(Hash, seed);
    for (1..32) |i| {
        const r = hashMaybeSeed(Hash.hash, seed, buf[0 .. len + i]);
        hasher.update(buf[len..][0..i]);
        const f1 = hasher.final();
        const f2 = hasher.final();
        if (f1 != f2) return error.IterativeHashWasNotIdempotent;
        if (f1 != r) return error.IterativeHashDidNotMatchDirect;
        len += i;
    }
}