[pandastronaut]

Candid question : if this is european legislation, how browser editor would handle this regional specific requirement ? Provide several flavor of their browser ? I doubt people and companies from outside europe would agree to use a european flavored version of their browser.

[GTP]

In the past, browsers needed to have "export-grade cryptography", because the USA considered ciphers a weapon, thus subject to export rescriction. And this ended up playing a crucial role in downgrade attacks later on. So I would say yes, they already had to handle a similar situation in the past.