As a graduate student at the Massachusetts Institute of Technology in 1996, Amit Sahai was fascinated by the strange notion of a “zero-knowledge” proof, a type of mathematical protocol for convincing ...

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A cryptographic master tool called indistinguishability obfuscation has for years seemed too good to be true. Three researchers have figured out that it can work. A recent cryptographic breakthrough ...

A long-sought “holy grail” in cryptography is poised to change the way we protect sensitive information. Today’s standard encryption schemes take an all-or-nothing approach. Once scrambled, your data ...