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@ -114,13 +114,13 @@ TLS keys for the whole domain.
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### Extensions
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HTTP-Based Public Key Pinning (HPKP) and
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[https://www.certificate-transparency.org](Certificate transparency) are
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[Certificate transparency](https://www.certificate-transparency.org) are
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both HTTP extensions which attempt to work around some of the deficiencies in
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the CA model, by making it more obvious if a CA has issued a certificate
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incorrectly.
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HPKP has not been particularly successful, and is
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[deprecated]((https://developers.google.com/web/updates/2018/04/chrome-67-deps-rems#deprecate_http-based_public_key_pinning)
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[deprecated](https://developers.google.com/web/updates/2018/04/chrome-67-deps-rems#deprecate_http-based_public_key_pinning)
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in Google Chrome as of April 2018. Certificate transparency, however, is seeing
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widespread adoption from Certificate Authories and HTTP clients.
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