This research presents experimental research of data encrypted data to compare the moment processing of data encryption and decryption of data algorithm, the algorithm number 3. 2. the DES algorithm, the algorithm Blowfish algorithm: 3. AES-128.3 algorithms are algorithms that have been popular. By bringing all three algorithms encrypt data with different data include data files of type text (.text) alone is the same size. The file is divided into two language files, data files, and Thailand the English text with images (.doc) of equal size. The file is divided into two language files, and files in English and Thailand last is an image file (.jpg) file number 1. All data files will be through data encryption and decryption of data 15 times to find out the average processing time of data encryption and decipher information. Then the average value of all, the algorithm compares the average of the period in order to obtain the best value and the most suitable of the codes and decoding the data.The research found that the size of the plain TeX affect differences in average processing time of encoding and decoding the data and information is the average minimum AES128.
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