Abstract: Systems and methods for facilitating electronic commerce by securely providing certificate-related and other services including certificate validation and warranty. In a preferred embodiment, these services are provided within the context of a four-corner trust model. The four-corner model comprises a buyer, or subscribing customer, and a seller, or relying customer, who engage in an on-line transaction. The buyer is a customer of a first financial institution, or issuing participant. The issuing participant operates a certificate authority and issues the buyer a hardware token including a private key and a digital certificate signed by the issuing participant. The seller is a customer of a second financial institution, or relying participant. The relying participant operates a certificate authority and issues the seller a hardware token including a private key and a digital certificate signed by the relying participant.

Abstract: System and methods for facilitating electronic commerce by securely providing certificate-related and other services, including certificate validation and warranty services. The system services include a certificate status check service and a warranty service. The certificate status check service allows a relying customer to validate a subscribing customer's digital certificate. The warranty service allows the relying customer to receive a collateral-backed warranty that the subscribing customer's digital certificate is valid, and also confirms the ability of the subscribing customer to pay. All participants and a root entity are provided with a transaction coordinator for combining services and operations into a single transaction having the qualities of atomicity, consistency, isolation, and durability. The transaction coordinator provides a single consistent interface for certificate-status messages and requests, as well as messages and requests relating to other services.

Abstract: Systems and methods for facilitating electronic commerce by securely providing certificate-related and other services including certificate validation and warranty. In a preferred embodiment, these services are provided within the context of a four-corner trust model. The four-corner model comprises a buyer, or subscribing customer, and a seller, or relying customer, who engage in an on-line transaction. The buyer is a customer of a first financial institution, or issuing participant. The issuing participant operates a certificate authority and issues the buyer a hardware token including a private key and a digital certificate signed by the issuing participant. The seller is a customer of a second financial institution, or relying participant. The relying participant operates a certificate authority and issues the seller a hardware token including a private key and a digital certificate signed by the relying participant.

Abstract: A system and method for facilitating electronic commerce by securely providing certificate-related and other services including certificate validation and warranty is disclosed. In a preferred embodiment, these services are provided within the context of a four-corner trust model. The four-corner model comprises a buyer, or subscribing customer, and a seller, or relying customer, who engage in an on-line transaction. The buyer is a customer of a first financial institution, or issuing participant. The issuing participant operates a certificate authority and issues the buyer a hardware token including a private key and a digital certificate signed by the issuing participant. The seller is a customer of a second financial institution, or relying participant. The relying participant operates a certificate authority and issues the buyer a hardware token including a private key and a digital certificate signed by the relying participant.