#include <stdio.h>
#include <openssl/bn.h>
#include <openssl/asn1.h>
#include <openssl/dh.h>
#include <openssl/pem.h>
/*8*16*8=1024,1024代表密钥长度(二进制位数)*/
unsigned char data[] =
{ 0x97, 0xF6, 0x42, 0x61, 0xCA, 0xB5, 0x05, 0xDD,
0x28, 0x28, 0xE1, 0x3F, 0x1D, 0x68, 0xB6, 0xD3,
0xDB, 0xD0, 0xF3, 0x13, 0x04, 0x7F, 0x40, 0xE8,
0x56, 0xDA, 0x58, 0xCB, 0x13, 0xB8, 0xA1, 0xBF,
0x2B, 0x78, 0x3A, 0x4C, 0x6D, 0x59, 0xD5, 0xF9,
0x2A, 0xFC, 0x6C, 0xFF, 0x3D, 0x69, 0x3F, 0x78,
0xB2, 0x3D, 0x4F, 0x31, 0x60, 0xA9, 0x50, 0x2E,
0x3E, 0xFA, 0xF7, 0xAB, 0x5E, 0x1A, 0xD5, 0xA6,
0x5E, 0x55, 0x43, 0x13, 0x82, 0x8D, 0xA8, 0x3B,
0x9F, 0xF2, 0xD9, 0x41, 0xDE, 0xE9, 0x56, 0x89,
0xFA, 0xDA, 0xEA, 0x09, 0x36, 0xAD, 0xDF, 0x19,
0x71, 0xFE, 0x63, 0x5B, 0x20, 0xAF, 0x47, 0x03,
0x64, 0x60, 0x3C, 0x2D, 0xE0, 0x59, 0xF5, 0x4B,
0x65, 0x0A, 0xD8, 0xFA, 0x0C, 0xF7, 0x01, 0x21,
0xC7, 0x47, 0x99, 0xD7, 0x58, 0x71, 0x32, 0xBE,
0x9B, 0x99, 0x9B, 0xB9, 0xB7, 0x87, 0xE8, 0xAB,
};
main()
{
DH *dh;
dh = DH_new(); //构造新的dh结构
dh->p = BN_bin2bn(data, sizeof(data), NULL);
//将data中的size位的正整数转化为大数,大数返回
dh->g = BN_new(); //新生成一个BIGNUM结构
BN_set_word(dh->g, 2); //dh->g=2
PEM_write_DHparams(stdout, dh); //将dh参数写出
}
原文地址:http://blog.csdn.net/sjtu_chenchen/article/details/46491043