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“Eleven days ago, the nonprofit entity that develops the protocol, Signal Messenger LLC, published a 5,900-word write-up describing its latest updates that bring Signal a significant step toward being fully quantum-resistant,” writes Ars Technica:
The mechanism that has made this constant key evolution possible over the past decade is what protocol developers call a “double ratchet.” Just as a traditional ratchet allows a gear to rotate in one direction but not in the…
