MD5(Message Digest Algorithm 5)是一种广泛使用的加密散列函数,用于生成数据的128位(16字节)哈希值。它最初由Ronald Rivest在1992年设计,并被广泛用于确保数据完整性和验证数据一致性。,,以下是一个简单的C语言实现的MD5算法示例:,,“`c,#include,#include,#include,#include,,// MD5 context.,typedef struct {, uint32_t state[4]; // state (ABCD), uint32_t count[2]; // number of bits, modulo 2^64 (lsb first), unsigned char buffer[64]; // input buffer,} MD5_CTX;,,void MD5Init(MD5_CTX* context);,void MD5Update(MD5_CTX* context, unsigned char* input, unsigned int length);,void MD5Final(unsigned char[16], MD5_CTX* context);,void Transform(uint32_t block[4], uint32_t const in[16]);,,unsigned char* MD5(const unsigned char* d, size_t n, unsigned char* md);,,// The main function to test the MD5 implementation.,int main() {, unsigned char digest[16];, const char* string = “hello world”;, MD5((unsigned char*)string, strlen(string), digest);, char mdString[33];, for (int i = 0; i