In cryptography, X.509 is an International Telecommunication Union (ITU) standard defining the format of public key certificates. X.509 certificates are...

The most common format for public key certificates is defined by X.509. Because X.509 is very general, the format is further constrained by profiles defined...

referred to a subordinate CA as an RA, this is incorrect according to the X.509 PKI standards. RAs do not have the signing authority of a CA and only manage...

Daniel Kaminsky (February 7, 1979 – April 23, 2021) was an American computer security researcher. He was a co-founder and chief scientist of Human Security...

is an Internet protocol used for obtaining the revocation status of an X.509 digital certificate. It is described in RFC 6960 and is on the Internet...

Format, Version 3.x". Library of Congress. 10 May 2022. Retrieved 2022-07-05. "Encapsulated PostScript (EPS) File Format, Version 3.x". Library of Congress...

Lenstra, Xiaoyun Wang, and Benne de Weger demonstrated construction of two X.509 certificates with different public keys and the same MD5 hash value, a demonstrably...

Challenge) format generated by some web browsers. Before creating a CSR for an X.509 certificate, the applicant first generates a key pair, keeping the private...

upon the certificate. The format of these certificates is specified by the X.509 or EMV standard. One particularly common use for certificate authorities...

as a single file. It is commonly used to bundle a private key with its X.509 certificate or to bundle all the members of a chain of trust. A PKCS #12...

widely used to transfer digital certificates such as X.509. Kerberos Packed Encoding Rules (PER, X.691) Presentation layer Structured Data eXchange Format...

then the certificate's validity dates can be trusted. Special treatment of X.509 certificate fields for self-signed certificate can be found in RFC 3280...

needed. The certificates for which a CRL should be maintained are often X.509/public key certificates, as this format is commonly used by PKI schemes...

the X.500 directory as a source of digital certificates as originally conceived in X.500 (1988). One should contrast the role of X.500 and X.509 to understand...

formats, such as Security Assertion Markup Language (SAML), Kerberos, and X.509. Its main focus is the use of XML Signature and XML Encryption to provide...

Authentication of Named Entities (DANE) is an Internet security protocol to allow X.509 digital certificates, commonly used for Transport Layer Security (TLS),...

Request extension, is a standard for checking the revocation status of X.509 digital certificates. It allows the presenter of a certificate to bear the...

AS2 file transfers typically require both sides of the exchange to trade X.509 certificates and specific "trading partner" names before any transfers can...

authorities in terms of market share since May 2019. As a consequence of choosing X.509 certificates, certificate authorities and a public key infrastructure are...

A domain validated certificate (DV) is an X.509 public key certificate typically used for Transport Layer Security (TLS) where the domain name of the...

OAuth compliant service like so: POST /oauth2/token Content-type: application/x-www-form-urlencoded grant_type=urn:ietf:params:oauth:grant-type:jwt-bearer&assertion=eyJhb...

protocol suite. IKE builds upon the Oakley protocol and ISAKMP. IKE uses X.509 certificates for authentication ‒ either pre-shared or distributed using...

An Extended Validation (EV) Certificate is a certificate conforming to X.509 that proves the legal entity of the owner and is signed by a certificate...

Patterson at Black Hat in Las Vegas, showing multiple methods for attacking the X.509 certificate authority infrastructure. Using these techniques, the team demonstrated...

the future with mandatory extensions, similar to critical extensions in X.509 certificates. tag One of the following properties from the IANA Certification...

it must not be used to represent a wildcard in an X.509 digital certificate Distinguished Name. The X.690 encoding standard for ASN.1 IA5String Information...

certificate was issued by a root that was cross-signed) and form the basis of an X.509-based public key infrastructure (PKI). Either it has matched Authority Key...

509 may refer to: 509 (number) 509, the year 509 Harbourfront, a streetcar route in Toronto 509th Operations Group, the 509th Operations Group of the USAAF...

implementation. The focus of the project is on authentication mechanisms using X.509 public key certificates and optional storage of private keys and certificates...

communication over the network transport layer, as well as interfaces to access X.509, PKCS #12, OpenPGP and other structures. GnuTLS consists of a library that...