It's not obvious whether Google can afford to drop LetsEncrypt, the single most widely used CA, used on approx 2/3 of all websites, over a unilateral policy decision by Google. It would amount to Google blocking 2/3 of the web in Chrome. Users would be forced to roll back the version or switch to different browsers. However, it's obvious that Let's Encrypt isn't interested in taking that risk. On 22/05/25 20:03, Jay Acuna via NANOG wrote:
On Thu, May 22, 2025 at 12:45 PM Tom Beecher via NANOG <nanog@lists.nanog.org> wrote:
want it imposed on me from on high. It's **YOUR** certificate that **YOU** are creating. The EKU is NOT mandatory to have present. Who is "imposing" something on you? Your CA is imposing it clearly.. in this case LetsEncrypt.
However, their reasoning ultimately is Google is mandating a new standard by fiat, and unilaterally to limit the declared purposes for your certificates.
Although Google is one vendor and doesn't have IETF or any industry standards body in agreement to make EKU a mandatory field. Google holds a monopoly position which they can abuse to bypass all standards bodies and hold your CA hostage should they not agree to any new arbitrary standards or rules they come up with.
If your CA doesn't agree to create and impose the extra restrictions on you and how you can use your certificates with other software, then Google will drop support for all LetsEncrypt certs from their browser Chrome.
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