We propose oblivious printing, a novel approach to document printing in which a set of printers can cooperate to print a secret message-in human or machine readable form-without learning the message. We present multi-party protocols for obliviously printing a secret in three settings: obliviously printing the contents of a ciphertext, obliviously printing a randomized message, and generating and obliviously printing a DSA/Elgamal keypair. We propose an approach to improving the legibility of messages in the presence of numerous participants. Finally we propose some potential applications of oblivious printing in the context of electronic voting and digital cash.
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