X.509

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wikipedia:X.509 standard format for Public key certificate used in TLS.

Tools: openssl, keytool, certinfo (Cloudflare) https://github.com/cloudflare/cfssl/blob/master/certinfo/certinfo.go[1]


Examples

Errors

  • Error response from daemon: Get https://URL/: x509: certificate signed by unknown authority

Security

  • ASN.1 and x509 parsers in the kernel have historically been quite problematic (CVE-2008-1673, CVE-2016-2053),

Activities


Related terms

See also

  • https://prefetch.net/blog/2019/12/10/converting-x509-certificates-to-json-objects/
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