Zig 0.17.0-dev (Split by item)

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initBlocks

argon2.initBlocks

fn initBlocks(
    blocks: *Blocks,
    h0: *H0,
    memory: u32,
    threads: u24,
) void

File

lib/std/crypto/argon2.zig:180

Code

fn initBlocks(
    blocks: *Blocks,
    h0: *H0,
    memory: u32,
    threads: u24,
) void {
    var block0: [1024]u8 = undefined;
    var lane: u24 = 0;
    while (lane < threads) : (lane += 1) {
        const j = lane * (memory / threads);
        mem.writeInt(u32, h0[Blake2b512.digest_length + 4 ..][0..4], lane, .little);

        mem.writeInt(u32, h0[Blake2b512.digest_length..][0..4], 0, .little);
        blake2bLong(&block0, h0);
        for (&blocks.items[j + 0], 0..) |*v, i| {
            v.* = mem.readInt(u64, block0[i * 8 ..][0..8], .little);
        }

        mem.writeInt(u32, h0[Blake2b512.digest_length..][0..4], 1, .little);
        blake2bLong(&block0, h0);
        for (&blocks.items[j + 1], 0..) |*v, i| {
            v.* = mem.readInt(u64, block0[i * 8 ..][0..8], .little);
        }
    }
}