COMMUNICATION WITH NON-REPUDIATION

Apparatus, systems, and methods may operate to compare a first hashed value of at least a first decryption key, the first decryption key received from a sender, to a second hashed value of at least a second decryption key that has been received as a signed value from a receiver. Further operations may include sending the first decryption key to the receiver and sending the signed value to the sender upon determining that the first hashed value matches the second hashed value. Additional apparatus, systems, and methods are disclosed.