Plaintext-recovery attack breaks Datta-Komargodski-Waters multi-authority ABE
The attack works in the claimed static model with one corrupt authority; a repair is proved under DBDH.
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Stories tagged #multi-authority
Differential Trust: Dynamic Multi-Authority Anonymous Credentials with Epoch-Weighted Updates
Researchers propose MA-ACEW, the first multi-authority anonymous credential model with epoch-weighted issuance and efficient cross-epoch credential updates.