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// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.// Copyright 2014-2017 browserify-aes contributors. All rights reserved. MIT license.// Copyright 2013 Maxwell Krohn. All rights reserved. MIT license.// Copyright 2009-2013 Jeff Mott. All rights reserved. MIT license.
export function incr32(iv) {  let len = iv.length;  let item;  while (len--) {    item = iv.readUInt8(len);    if (item === 255) {      iv.writeUInt8(0, len);    } else {      item++;      iv.writeUInt8(item, len);      break;    }  }}