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Hybrid Encryption Technique using Cyclic Bit Shift and RC4

Data security is an important aspect when data is sent over public networks such as the internet. Securing data can use cryptographic techniques. In symmetric cryptographic techniques, there are permutation and stream techniques, where each technique has its own weaknesses and strengths. This research combines two techniques into a hybrid technique to get stronger encryption. The proposed permutation technique is cyclic bit shift, while the proposed stream technique is RC4. The results of the combination of two methods are then performed performance tests using the avalanche effect (AE), bit error ratio (BER), the time required for decryption encryption and character error rate (CER). Based on the results of testing the proposed method is superior compared to the method that has been previously proposed.