Abstract: Disclosed herein is a computer implemented method for providing authentication for secure transactions in a multi-server system, the method comprising; receiving, at an authentication server from a requestor server, a request for a cryptogram, the request being associated with a transaction and including a requestor identifier; in response to receiving the request, generating a cryptogram; sending, from the authentication server, the cryptogram to the requestor server; receiving, at the authentication server from a merchant server, the cryptogram, a payment token, and a unique merchant identifier, and a merchant secret; validating, at the authentication server, the cryptogram; comparing, at the authentication server, the unique merchant identifier and the merchant secret with a unique merchant identifier and a merchant secret pair stored in a database; and authorizing, at the authentication server, the transaction when there is a match.

Abstract: The present disclosure relates to a computer-implemented method and to a system for authenticating a transaction over a secure network. The method comprises, prior to authorization of a transaction: receiving, by a digital service server, from a merchant plug-in (MPI) computing device, via a directory server, a token and a first cryptogram for the transaction; decrypting, by the digital service server, the token into sensitive data; generating, by the digital service server, a first message including a validation result and the sensitive data; and transmitting, by the digital service server, the first message to an issuer server to authenticate the transaction.

Abstract: The present disclosure relates to a computer-implemented method for authenticating a transaction over a secure network. The method comprises receiving, by a first authentication server, a sensitive data payload and a cryptogram, wherein the first authentication server is configured to either receive or generate a token associated with the sensitive data payload; transmitting, by the first authentication server, the token and the cryptogram to a second authentication server, wherein the second authentication server is configured to validate the token and the cryptogram and generate a first message including a validation result; transmitting, by the second authentication server, the first message to an issuer server to authenticate the transaction; and reviewing, by the issuer server, the validation result and generating an authentication value including a validation flag based on the review of the validation result.

Abstract: The present disclosure relates to a computer-implemented method for authenticating a transaction over a secure network. The method comprises receiving, by a first authentication server, a sensitive data payload and a cryptogram, wherein the first authentication server is configured to either receive or generate a token associated with the sensitive data payload; transmitting, by the first authentication server, the token and the cryptogram to a second authentication server, wherein the second authentication server is configured to validate the token and the cryptogram and generate a first message including a validation result; transmitting, by the second authentication server, the first message to an issuer server to authenticate the transaction; and reviewing, by the issuer server, the validation result and generating an authentication value including a validation flag based on the review of the validation result.

Abstract: Disclosed herein is a computer implemented method for providing authentication for secure transactions in a multi-server system, the method comprising; receiving, at an authentication server from a requestor server, a request for a cryptogram, the request being associated with a transaction and including a requestor identifier; in response to receiving the request, generating a cryptogram; sending, from the authentication server, the cryptogram to the requestor server; receiving, at the authentication server from a merchant server, the cryptogram, a payment token, and a unique merchant identifier, and a merchant secret; validating, at the authentication server, the cryptogram; comparing, at the authentication server, the unique merchant identifier and the merchant secret with a unique merchant identifier and a merchant secret pair stored in a database; and authorizing, at the authentication server, the transaction when there is a match.