(The cryptography courseware of xx University, which also designed detailed algorithms and security protocols, etc. I have obtained these through various paths. I hope to dedicate it to you and me who are learning technology, and move forward together. 51CTO is our spiritual home. Excellent resources, and Let's share together, Dulele is not as good as Zhonglele Dugu Network will only publish high-quality products in the future, and I look forward to our support!)