openssl 源码（openssl使用）

Lu珊Han
#include <openssl/rsa.h> #include <openssl/sha.h> int main() { RSA *r; int bits=1024,ret,len,flen,padding,i; unsigned long e=RSA_3; BIGNUM *bne; unsigned char*key,*p; BIO *b; unsigned charfrom[500],to[500],out[500]; bne=BN_new(); ret=BN_set_word(bne,e); r=RSA_new(); ret=RSA_generate_key_ex(r,bits,bne,NULL); if(ret!=1) { printf("RSA_generate_key_ex err!\n"); return -1; } /* 私钥i2d */ b=BIO_new(BIO_s_mem()); ret=i2d_RSAPrivateKey_bio(b,r); key=malloc(1024); len=BIO_read(b,key,1024); BIO_free(b); b=BIO_new_file("rsa.key","w"); ret=i2d_RSAPrivateKey_bio(b,r); BIO_free(b); /* 私钥d2i */ /* 公钥i2d */ /* 公钥d2i */ /* 私钥加密 */ flen=RSA_size(r); printf("please select private enc padding : \n"); printf("1.RSA_PKCS1_PADDING\n"); printf("3.RSA_NO_PADDING\n"); printf("5.RSA_X931_PADDING\n"); scanf("%d",&padding); if(padding==RSA_PKCS1_PADDING) flen-=11; else if(padding==RSA_X931_PADDING) flen-=2; else if(padding==RSA_NO_PADDING) flen=flen; else { printf("rsa not surport !\n"); return -1; } for(i=0;i<flen;i++) memset(&from[i],i,1); len=RSA_private_encrypt(flen,from,to,r,padding); if(len<=0) { printf("RSA_private_encrypt err!\n"); return -1; } len=RSA_public_decrypt(len,to,out,r,padding); if(len<=0) { printf("RSA_public_decrypt err!\n"); return -1; } if(memcmp(from,out,flen)) { printf("err!\n"); return -1; } /* */ printf("please select public enc padding : \n"); printf("1.RSA_PKCS1_PADDING\n"); printf("2.RSA_SSLV23_PADDING\n"); printf("3.RSA_NO_PADDING\n"); printf("4.RSA_PKCS1_OAEP_PADDING\n"); scanf("%d",&padding); flen=RSA_size(r); if(padding==RSA_PKCS1_PADDING) flen-=11; else if(padding==RSA_SSLV23_PADDING) flen-=11; else if(padding==RSA_X931_PADDING) flen-=2; else if(padding==RSA_NO_PADDING) flen=flen; else if(padding==RSA_PKCS1_OAEP_PADDING) flen=flen-2 * SHA_DIGEST_LENGTH-2 ; else { printf("rsa not surport !\n"); return -1; } for(i=0;i<flen;i++) memset(&from[i],i+1,1); len=RSA_public_encrypt(flen,from,to,r,padding); if(len<=0) { printf("RSA_public_encrypt err!\n"); return -1; } len=RSA_private_decrypt(len,to,out,r,padding); if(len<=0) { printf("RSA_private_decrypt err!\n"); return -1; } if(memcmp(from,out,flen)) { printf("err!\n"); return -1; } printf("test ok!\n"); RSA_free(r); return 0; }上述程序中当采用公钥RSA_SSLV23_PADDING加密，用私钥RSA_SSLV23_PADDING解密时会报错，原因是openssl源代码错误： rsa_ssl.c函数RSA_padding_check_SSLv23有： if (k == -1) /* err */ { RSAerr(RSA_F_RSA_PADDING_CHECK_SSLV23,RSA_R_SSLV3_ROLLBACK_ATTACK); return (-1); }修改为k!=-1即可。各种padding对输入数据长度的要求：私钥加密： RSA_PKCS1_PADDING RSA_size-11 RSA_NO_PADDING RSA_size-0 RSA_X931_PADDING RSA_size-2公钥加密 RSA_PKCS1_PADDING RSA_size-11 RSA_SSLV23_PADDING RSA_size-11 RSA_X931_PADDING RSA_size-2 RSA_NO_PADDING RSA_size-0 RSA_PKCS1_OAEP_PADDING RSA_size-2 * SHA_DIGEST_LENGTH-2
2021-02-24 12:00:01

售微星二开源码
tar -zxf openssl-1.0.1g.tar.gzcd openssl-1.0.1g./configmakemake testmake install查看openssl的版本openssl version若还是旧版的话，执行下面的命令：mv /usr/bin/openssl /root/ln -s /usr/local/ssl/bin/openssl /usr/bin/opens
2021-02-12 00:08:07

礼品代发源码
如何在源码包编译安装的 LEMP 环境下开启 OpenSSL 功能,不进行make install安装的话，就在你openssl的源码目录里，当然你config的时候需要指明shared，否则只有.a的，没有.so的。如果config的时候，指定了prefix，那么就到你指定的目录去找，下面应该有个lib目录。如果你的linux自带openssl的话，系统...
2021-02-12 00:08:07