Abstract: When revoking permissions in existing blockchain access control schemes, multiple rounds of encryption and the dissemination of new keys resulted in high computational and storage overhead. To address this, a blockchain access control scheme based on Identity-Based Broadcast Encryption (IBBE) was proposed. This scheme leveraged the single broadcast characteristic of IBBE, requiring only the removal of the target user from the receiver identity set during permission revocation, thus avoiding the need to re-encrypt keys for each user individually, significantly reducing the computational and storage burden of permission revocation. Furthermore, a grouping mechanism was designed in conjunction with the blockchain organizational structure to reduce the computational complexity of IBBE. At the same time, to address the limited storage capacity on the blockchain, a collaborative storage mechanism between on-chain and off-chain storage was constructed to alleviate the storage overhead on the blockchain. Experimental results show that IBBE reduces encryption latency by approximately 80% compared to IBE and significantly reduces storage overhead compared to HE during member revocation. The optimized encryption latency after grouping is reduced by approximately 70% compared with before optimization.