Nowadays data security is one of the important issues, especially for increasing transactions via the internet. This paper presents a hybrid cryptosystem using RSA (Asymmetric) and Blowfish (Symmetric) algorithm. Hybrid encryption is a combination of symmetric and asymmetric encryption methods. Symmetric algorithms are mostly used for encryption of messages than asymmetric. The objective of this research is to evaluate the performance of RSA, Blowfish cryptography algorithms and RSA&Blowfish

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... rid cryptography algorithm. The performance of the implemented encryption algorithms is evaluated by means of encryption and decryption time and memory usage. To make comparison experiments, for those algorithms is created program implementation. The programming language Java is used for implementing the encryption algorithms.