DESProcess FILE *mfp,*cfp int ttch=0,xorRes,ttbitdiff=0 char mch,cch float bdiff=0 if((mfp=fopen(mfile,\"r\"))==NULL) {cout<<\"Cannot open the file to compare\"<<endl } if((cfp=fopen(cfile,\"r\"))==NULL) {cou

Watermark A visible or invisible signature embedded inside an image to show authenticity or proof of ownership. The hidden watermark should be inseparable the host image, robust enough to resist any manipulations while preserving the image quality. T

BLAKE2 are cryptographic hash functions based on Dan Bernstein s Cha stream cipher, but a permuted copy of the input block, XORed with some round constants, is added before each Cha round. Like SHA-2, there are two variants differing in the word size

通过实现数字签名算法（DSA），加深对数字签名算法的理解，同时学习Hash算法的实现。 1）利用C\C++语言实现DSA算法。 2）DSA中的Hash函数采用SHA算法。 -By implementing the Digital Signature Algorithm (DSA), a better understanding of the digital signature algorithm, while learning to achieve Hash algorithm. 1