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The trusted computing group (TCG) has developed specifications for computing platforms that create a foundation of trust for software processes, based on credentials. But according to research on those credentials, we found management of those credentials is too complicated to implement, and the complication leads to underlying insecurity. The paper proposes a new architecture for credentials, making use of the EK credential and platform identity credential to accomplish the trust mechanism. This is a significant improvement on the previously five credentials required which are now reduced to only three. The proposal provides evidence for superiority in security and availability.