Function RtlGenRandom [src]

Call RtlGenRandom() instead of CryptGetRandom() on Windows https://github.com/rust-lang-nursery/rand/issues/111 https://bugzilla.mozilla.org/show_bug.cgi?id=504270

Prototype

pub fn RtlGenRandom(output: []u8) RtlGenRandomError!void

Parameters

output: []u8

Possible Errors

Unexpected

Source

  pub fn RtlGenRandom(output: []u8) RtlGenRandomError!void {
    var total_read: usize = 0;
    var buff: []u8 = output[0..];
    const max_read_size: ULONG = maxInt(ULONG);

    while (total_read < output.len) {
        const to_read: ULONG = @min(buff.len, max_read_size);

        if (advapi32.RtlGenRandom(buff.ptr, to_read) == 0) {
            return unexpectedError(GetLastError());
        }

        total_read += to_read;
        buff = buff[to_read..];
    }
}  