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  2. Root certificate - Wikipedia

    en.wikipedia.org/wiki/Root_certificate

    The role of root certificate as in the chain of trust. In cryptography and computer security, a root certificate is a public key certificate that identifies a root certificate authority (CA). [1] Root certificates are self-signed (and it is possible for a certificate to have multiple trust paths, say if the certificate was issued by a root that ...

  3. Public key infrastructure - Wikipedia

    en.wikipedia.org/wiki/Public_key_infrastructure

    Public key infrastructure. A public key infrastructure (PKI) is a set of roles, policies, hardware, software and procedures needed to create, manage, distribute, use, store and revoke digital certificates and manage public-key encryption. The purpose of a PKI is to facilitate the secure electronic transfer of information for a range of network ...

  4. Public key certificate - Wikipedia

    en.wikipedia.org/wiki/Public_key_certificate

    Public key certificate. In cryptography, a public key certificate, also known as a digital certificate or identity certificate, is an electronic document used to prove the validity of a public key. [ 1 ][ 2 ] The certificate includes the public key and information about it, information about the identity of its owner (called the subject), and ...

  5. Chain of trust - Wikipedia

    en.wikipedia.org/wiki/Chain_of_trust

    The roles of root certificate, intermediate certificate and end-entity certificate as in the chain of trust. In computer security, a chain of trust is established by validating each component of hardware and software from the end entity up to the root certificate. It is intended to ensure that only trusted software and hardware can be used ...

  6. X.509 - Wikipedia

    en.wikipedia.org/wiki/X.509

    In cryptography, X.509 is an International Telecommunication Union (ITU) standard defining the format of public key certificates. [ 1 ] X.509 certificates are used in many Internet protocols, including TLS/SSL, which is the basis for HTTPS, [ 2 ] the secure protocol for browsing the web. They are also used in offline applications, like ...

  7. Certificate authority - Wikipedia

    en.wikipedia.org/wiki/Certificate_authority

    Certificate authority. In cryptography, a certificate authority or certification authority (CA) is an entity that stores, signs, and issues digital certificates. A digital certificate certifies the ownership of a public key by the named subject of the certificate. This allows others (relying parties) to rely upon signatures or on assertions ...

  8. Let's Encrypt - Wikipedia

    en.wikipedia.org/wiki/Let's_Encrypt

    The root certificate was used to sign two intermediate certificates, [44] which are also cross-signed by the certificate authority IdenTrust. [ 7 ] [ 45 ] One of the intermediate certificates is used to sign issued certificates, while the other is kept offline as a backup in case of problems with the first intermediate certificate. [ 44 ]

  9. Code signing - Wikipedia

    en.wikipedia.org/wiki/Code_signing

    Code signing is the process of digitally signing executables and scripts to confirm the software author and guarantee that the code has not been altered or corrupted since it was signed. The process employs the use of a cryptographic hash to validate authenticity and integrity. [1] Code signing was invented in 1995 by Michael Doyle, as part of ...