US Patent Issued to NTT Research, The Trustees of Princeton University on Dec. 30 for "Cryptographic data message expansion for increasing adversarial storage requirements" (New York, Massachusetts Inventors)

ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,512,984, issued on Dec. 30, was assigned to NTT Research Inc. (Sunnyvale, Calif.) and The Trustees of Princeton University (Princeton, N.J.).

"Cryptographic data message expansion for increasing adversarial storage requirements" was invented by Jiaxin Guan (New York), Daniel Wichs (Boston) and Mark Zhandry (New York).

According to the abstract* released by the U.S. Patent & Trademark Office: "The disclosure relates to generating a ciphertext of arbitrary and flexibly large size and ensures that an adversary learns little about the encrypted data, even if the decryption key later leaks, unless substantially the entire ciphertext is stored. Given that communication will be inconvenient...