A method comprising: receiving, by a server computer, a thin client identifier from a thin client on a communication device; retrieving, by the server computer, an encrypted first cryptographic key based on the thin client identifier, wherein the encrypted first cryptographic key is a first cryptographic key that is encrypted with a second cryptographic key; initiating, by the server computer, the sending of the encrypted first cryptographic key to the thin client; receiving, by the server computer, an encrypted secret from the thin client, the encrypted secret being a secret encrypted with the first cryptographic key; initiating, by the server computer, a translation of the secret from being encrypted with the first cryptographic key to being encrypted with a third cryptographic key, wherein the third cryptographic key is a transport computer cryptographic key; after initiating the translation of the secret, obtaining, by the server computer, the secret encrypted with the third cryptographic key; and providing, by the server computer, the secret encrypted with the third cryptographic key to a transport computer, wherein the transport computer decrypts the secret encrypted with the third cryptographic key to obtain the secret; wherein the secret encrypted with the third cryptographic key is provided to the transport computer in an authorization request message, and wherein the transport computer decrypts the encrypted secret using the third cryptographic key, encrypts the secret with a fourth cryptographic key, wherein the fourth cryptographic key is an authorizing entity computer cryptographic key, modifies the authorization request message to include the secret encrypted with the fourth cryptographic key and provides the modified authorization request message to an authorizing entity computer, wherein the authorizing entity computer decrypts the secret using the fourth cryptographic key, determines whether or not to authorize an interaction associated with the secret, generates an indication of whether or not the interaction is authorized, generates an authorization response message including the indication of whether or not the interaction is authorized, and provides the authorization response message to the server computer via the transport computer, wherein the method further comprises: receiving, by the server computer, the authorization response message; and providing, by the server computer, the authorization response message to the thin client. receiving, by a server computer, a thin client identifier from a thin client on a communication device; retrieving, by the server computer, an encrypted first cryptographic key based on the thin client identifier, wherein the encrypted first cryptographic key is a first cryptographic key that is encrypted with a second cryptographic key; initiating, by the server computer, the sending of the encrypted first cryptographic key to the thin client; receiving, by the server computer, an encrypted secret from the thin client, the encrypted secret being a secret encrypted with the first cryptographic key; initiating, by the server computer, a translation of the secret from being encrypted with the first cryptographic key to being encrypted with a third cryptographic key, wherein the third cryptographic key is a transport computer cryptographic key; after initiating the translation of the secret, obtaining, by the server computer, the secret encrypted with the third cryptographic key; and providing, by the server computer, the secret encrypted with the third cryptographic key to a transport computer, wherein the transport computer decrypts the secret encrypted with the third cryptographic key to obtain the secret; wherein the secret encrypted with the third cryptographic key is provided to the transport computer in an authorization request message, and wherein the transport computer decrypts the encrypted secret using the third cryptographic key, encrypts the secret with a fourth cryptographic key, wherein the fourth cryptographic key is an authorizing entity computer cryptographic key, modifies the authorization request message to include the secret encrypted with the fourth cryptographic key and provides the modified authorization request message to an authorizing entity computer, wherein the authorizing entity computer decrypts the secret using the fourth cryptographic key, determines whether or not to authorize an interaction associated with the secret, generates an indication of whether or not the interaction is authorized, generates an authorization response message including the indication of whether or not the interaction is authorized, and provides the authorization response message to the server computer via the transport computer, wherein the method further comprises: receiving, by the server computer, the authorization response message; and providing, by the server computer, the authorization response message to the thin client. receiving, by the server computer, the authorization response message; and providing, by the server computer, the authorization response message to the thin client.