Which term relies on a system of digital certificates and asymmetric keys?

Which term relies on a system of digital certificates and asymmetric keys?

• A. Secure Electronic Transaction (SET)
• B. 3-D
• C. Elliptic Curve Cryptography (ECC)
• D. Web Service

Answer: (A)

Digital certificates and asymmetric keys are the backbone of a PKI-based framework that provides authentication, integrity, and non-repudiation for electronic transactions. Secure Electronic Transaction uses this approach to secure online card payments: participants hold public/private key pairs, and messages are signed with private keys and verified with public keys. Digital certificates issued by trusted authorities bind a public key to an identity, enabling entities like buyers, merchants, and payment gateways to trust each other and to securely exchange sensitive data over insecure networks. Other options don’t embody that same certificate-driven, public-key infrastructure role. The 3-D Secure protocol focuses on authenticating the cardholder during online transactions, but it isn’t defined by a system of digital certificates and asymmetric keys. Elliptic Curve Cryptography is a type of public-key cryptography method that uses elliptic curves, but the term itself isn’t a whole certificate-based system. Web Service describes how software components communicate over the web, not a PKI-based framework for securing transactions.

Digital certificates and asymmetric keys are the backbone of a PKI-based framework that provides authentication, integrity, and non-repudiation for electronic transactions. Secure Electronic Transaction uses this approach to secure online card payments: participants hold public/private key pairs, and messages are signed with private keys and verified with public keys. Digital certificates issued by trusted authorities bind a public key to an identity, enabling entities like buyers, merchants, and payment gateways to trust each other and to securely exchange sensitive data over insecure networks.

Other options don’t embody that same certificate-driven, public-key infrastructure role. The 3-D Secure protocol focuses on authenticating the cardholder during online transactions, but it isn’t defined by a system of digital certificates and asymmetric keys. Elliptic Curve Cryptography is a type of public-key cryptography method that uses elliptic curves, but the term itself isn’t a whole certificate-based system. Web Service describes how software components communicate over the web, not a PKI-based framework for securing transactions.