Question: Suppose N different systems use the IBM Cryptographic Subsystem with host master keys KMH[i](i = 1, 2, . . . N). Devise a method for

Suppose N different systems use the IBM Cryptographic Subsystem with host master keys KMH[i](i = 1, 2, . . . N). Devise a method for communicating between systems without requiring the system to either share a common host master key or to divulge their individual host master keys.

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