The Optimal Combination Mode of Three-digit Cryptography Based on Letters and Numbers

In order to better protect the file information from being leaked, the best combination mode with one-letter and two-digit passwords was discussed here. We mainly talked over the possible positions of the letters: firstly, according to the position of the letters, three combinations was listed; then, Advanced Archive Password Recovery was used to crack the three possible combinations and the relevant parameters was recorded; finally, the experimental parameters of each combination mode were analyzed by data analysis method, and the most reliable combination method was found according to the analysis results.