openssl pem.h 中提供了关于pem格式密钥对的操作接口

通常使用.pem的格式文件来保存openssl 生成的密钥对；

在终端下 cat xxx.pem 可以看到

-----BEGIN RSA PRIVATE KEY-----

XXXX


-----END RSA PRIVATE KEY-----

密钥数据进行了BASE64编码

1. 示例：将生成的密钥对保存成pem文件

void testWriteRSA2PEM()

{

    //生成密钥对

    RSA *r = RSA_new();

    int bits = ;

    BIGNUM *e = BN_new();

    BN_set_word(e, );

    RSA_generate_key_ex(r, bits, e, NULL);

    RSA_print_fp(stdout, r, );

    BIO *out;

    out = BIO_new_file("/Users/cocoajin/Desktop/opriv.pem","w");

    //这里生成的私钥没有加密，可选加密

    int ret = PEM_write_bio_RSAPrivateKey(out, r, NULL, NULL, , NULL, NULL);

    printf("writepri:%d\n",ret);

    BIO_flush(out);

    BIO_free(out);

    out = BIO_new_file("/Users/cocoajin/Desktop/opub.pem","w");

    ret = PEM_write_bio_RSAPublicKey(out, r);

    printf("writepub:%d\n",ret);

    BIO_flush(out);

    BIO_free(out);

    BN_free(e);

    RSA_free(r);

}

在目标路径保存了生成的公钥opub.pem和私钥oprov.pem

输出日志

Private-Key: ( bit)

modulus:

    :e6::f5:6f:4d:5e:c2:ad:0d:f5:::::

    ca:6f::4f:3a:::e2:ee:a2:cc::::e2:

    3d:0d:e3:0d:c0:6a:::b6:c7:de:e2:d6:::

    9e::::dd:2d::c5:a8:f2:c1::8b::f9:

    :0a:7a::

publicExponent:  (0x10001)

privateExponent:

    :ca:1b::6f:c5:de:c2:bf:2f:b6::f7:ad:d8:

    ::fc::fd:0a:e0::6b::::ea::8c:

    b0:7a:d3:d8::b7:fb::f1:4e::9d:bf::3a:

    e0:f3:fa::d3::fd:b0:f5:cd:5c::d1::8c:

    :e3:fb:c7:

prime1:

    :f6:d7::c4:1a:2f:eb:0b:c4:::3b:fe:f6:

    0d:c1:::ca:6c::fc:de:d7::ac::9d::

    :fe:9b

prime2:

    :ef:::::4d:ac::aa:ed:e9:a7:1d:5d:

    b1:7d:1c:1a:ef::8f:2d:bc:8a:e7::f5:f8::

    ::

exponent1:

    :f4:d2:c0:6f:b8:ed::fa:::2f::::

    b3::9f:c0:6c:b8:::b1:df:b4::fd:2a::

    :ec:2b

exponent2:

    :b5::c1::bc:3d::f8:::db:f9:5c:c4:

    :d8::fe:::7e:a6:b4:6a:::db::d0:

    ::

coefficient:

    0a:::2f:e9:ca:b6::::3b:5a::ea:5e:

    8d:::b9:7a:::c4::cb::0e::6b:1b:

    e5:c4

writepri:

writepub:

Program ended with exit code:

2. 示例：从pem文件中获取公钥私钥方式一（利用了BIO）

void testReadRSAFromPEM()

{

    RSA *pubkey = RSA_new();

    RSA *prikey = RSA_new();

    BIO *pubio;

    BIO *priio;

    priio = BIO_new_file("/Users/cocoajin/Desktop/opriv.pem", "rb");

    prikey = PEM_read_bio_RSAPrivateKey(priio, &prikey, NULL, NULL);

    pubio = BIO_new_file("/Users/cocoajin/Desktop/opub.pem", "rb");

    pubkey = PEM_read_bio_RSAPublicKey(pubio, &pubkey, NULL, NULL);

    RSA_print_fp(stdout, pubkey, );

    RSA_print_fp(stdout, prikey, );

    RSA_free(pubkey);

    BIO_free(pubio);

    RSA_free(prikey);

    BIO_free(priio);

}

从目标路径读取公钥opub.pem和私钥opriv.pem

输出日志

Public-Key: ( bit)

Modulus:

    :e6::f5:6f:4d:5e:c2:ad:0d:f5:::::

    ca:6f::4f:3a:::e2:ee:a2:cc::::e2:

    3d:0d:e3:0d:c0:6a:::b6:c7:de:e2:d6:::

    9e::::dd:2d::c5:a8:f2:c1::8b::f9:

    :0a:7a::

Exponent:  (0x10001)

Private-Key: ( bit)

modulus:

    :e6::f5:6f:4d:5e:c2:ad:0d:f5:::::

    ca:6f::4f:3a:::e2:ee:a2:cc::::e2:

    3d:0d:e3:0d:c0:6a:::b6:c7:de:e2:d6:::

    9e::::dd:2d::c5:a8:f2:c1::8b::f9:

    :0a:7a::

publicExponent:  (0x10001)

privateExponent:

    :ca:1b::6f:c5:de:c2:bf:2f:b6::f7:ad:d8:

    ::fc::fd:0a:e0::6b::::ea::8c:

    b0:7a:d3:d8::b7:fb::f1:4e::9d:bf::3a:

    e0:f3:fa::d3::fd:b0:f5:cd:5c::d1::8c:

    :e3:fb:c7:

prime1:

    :f6:d7::c4:1a:2f:eb:0b:c4:::3b:fe:f6:

    0d:c1:::ca:6c::fc:de:d7::ac::9d::

    :fe:9b

prime2:

    :ef:::::4d:ac::aa:ed:e9:a7:1d:5d:

    b1:7d:1c:1a:ef::8f:2d:bc:8a:e7::f5:f8::

    ::

exponent1:

    :f4:d2:c0:6f:b8:ed::fa:::2f::::

    b3::9f:c0:6c:b8:::b1:df:b4::fd:2a::

    :ec:2b

exponent2:

    :b5::c1::bc:3d::f8:::db:f9:5c:c4:

    :d8::fe:::7e:a6:b4:6a:::db::d0:

    ::

coefficient:

    0a:::2f:e9:ca:b6::::3b:5a::ea:5e:

    8d:::b9:7a:::c4::cb::0e::6b:1b:

    e5:c4

Program ended with exit code:

3. 示例：从pem文件中读取公钥私钥方式二(利用FILE)

void testPEMReadRSA()

{

    RSA *pubkey = RSA_new();

    RSA *prikey = RSA_new();

    FILE *pubf = fopen("/Users/cocoajin/Desktop/opub.pem", "rb");

    pubkey = PEM_read_RSAPublicKey(pubf, &pubkey, NULL, NULL);

    FILE *prif = fopen("/Users/cocoajin/Desktop/opriv.pem", "rb");

    prikey = PEM_read_RSAPrivateKey(prif, &prikey, NULL, NULL);

    RSA_print_fp(stdout, pubkey, );

    RSA_print_fp(stdout, prikey, );

    fclose(pubf);

    fclose(prif);

    RSA_free(pubkey);

    RSA_free(prikey);

}

输出日志

Public-Key: ( bit)

Modulus:

    :e6::f5:6f:4d:5e:c2:ad:0d:f5:::::

    ca:6f::4f:3a:::e2:ee:a2:cc::::e2:

    3d:0d:e3:0d:c0:6a:::b6:c7:de:e2:d6:::

    9e::::dd:2d::c5:a8:f2:c1::8b::f9:

    :0a:7a::

Exponent:  (0x10001)

Private-Key: ( bit)

modulus:

    :e6::f5:6f:4d:5e:c2:ad:0d:f5:::::

    ca:6f::4f:3a:::e2:ee:a2:cc::::e2:

    3d:0d:e3:0d:c0:6a:::b6:c7:de:e2:d6:::

    9e::::dd:2d::c5:a8:f2:c1::8b::f9:

    :0a:7a::

publicExponent:  (0x10001)

privateExponent:

    :ca:1b::6f:c5:de:c2:bf:2f:b6::f7:ad:d8:

    ::fc::fd:0a:e0::6b::::ea::8c:

    b0:7a:d3:d8::b7:fb::f1:4e::9d:bf::3a:

    e0:f3:fa::d3::fd:b0:f5:cd:5c::d1::8c:

    :e3:fb:c7:

prime1:

    :f6:d7::c4:1a:2f:eb:0b:c4:::3b:fe:f6:

    0d:c1:::ca:6c::fc:de:d7::ac::9d::

    :fe:9b

prime2:

    :ef:::::4d:ac::aa:ed:e9:a7:1d:5d:

    b1:7d:1c:1a:ef::8f:2d:bc:8a:e7::f5:f8::

    ::

exponent1:

    :f4:d2:c0:6f:b8:ed::fa:::2f::::

    b3::9f:c0:6c:b8:::b1:df:b4::fd:2a::

    :ec:2b

exponent2:

    :b5::c1::bc:3d::f8:::db:f9:5c:c4:

    :d8::fe:::7e:a6:b4:6a:::db::d0:

    ::

coefficient:

    0a:::2f:e9:ca:b6::::3b:5a::ea:5e:

    8d:::b9:7a:::c4::cb::0e::6b:1b:

    e5:c4

Program ended with exit code:

4. 在终端下使用openssl命令生成公钥私钥

//生成1024位的RSA私钥

openssl genrsa -out private.pem 

//再由私钥生成公钥

openssl rsa -in private.pem -pubout -out public.pem

//私钥文件private.pem

//公钥文件public.pem

//上面私钥是没加密的，可选加密，指定一个加密算法生成时输入密码

以上测试使用openssl 1.1.0c

参考：https://www.openssl.org/docs/man1.1.0/crypto/PEM_read_bio_RSAPublicKey.html

openssl pem 生成公钥和私钥及文件的更多相关文章

  1. openssl windows 生成公钥与私钥

    链接: https://pan.baidu.com/s/1qn-qeFxovor-vcAWFl8jIw 提取码: zy5v 一,下载安装windows平台openssl密钥生成工具,执行安装目录bin ...

  2. git 生成公钥、私钥方法与clone使用方法

    我的配置流程 Git配置 Git安装完之后,需做git配置.打开git bash,分别执行以下两句命令 git config --global user.name "用户名" gi ...

  3. Git简单生成生成公钥和私钥方法

    Git简单生成生成公钥和私钥方法 Git配置 Git安装完之后,需做最后一步配置.打开git bash,分别执行以下两句命令 git config --global user.name “用户名” g ...

  4. Git安装与使用（windows环境）（一）----Git安装、生成公钥和私钥、添加SSH

    安装 1.从官网下载git:http://git-scm.com/downloads 2.安装git,选择git组件安装,如下图 3.一直next,直到出现下面的窗口.这里是选择命令行形式.(可以理解 ...

  5. GIT生成公钥和私钥

    转载至:https://blog.csdn.net/gwz1196281550/article/details/80268200 打开 git bash! git config --global us ...

  6. MAC下用OPENSSL生成公钥和私钥

    MAC OS自带了OpenSSL,所以不用去编译那一坨跟SHIT一样的源码.直接在命令行里使用OPENSSL就可以. 打开命令行工具,然后输入 openssl打开openssl,接着只要三句命令就可以 ...

  7. 使用keytool生成公钥、私钥、证书并且读取出来，使用私钥签名jar并验证（转）

    参考链接:http://happyqing.iteye.com/blog/2139504 :https://blog.csdn.net/arjelarxfc/article/details/52461 ...

  8. xshell生成公钥和私钥

    一.打开你的xshell工具,工具栏有一个工具选项,点开选择新建用户密钥生成向导(如下图所示) 二. 点开之后就会如上图所示一样,点击选择下一步,出现如下,再点击下一步 点击完下一步会出现如下图所示 ...

  9. sourceTree 生成公钥和私钥 然后拉项目代码

    第一步 用sourceTree生成公钥pub和私钥文件ppk    打开sourceTree -> 工具 -> 创建或导入ssh密钥 -> 点击generate -> 上面会显 ...

随机推荐

  1. VIM 常用快捷键

    一,光标移动 大家不要觉得光标移动不重要,其实它是基础,更好的光标移动,复制,粘贴,删除等才能更加的得心应手,进入了编辑器里面后,鼠标就不能用了. 光标移动 h 或 向左箭头键(←) 20h或者20( ...

  2. 编写ros串口节点，使用官方serial包

    参考http://www.roswiki.com/read.php?tid=557&fid=39 1.通过sudo apt-get install ros-<distro>-ser ...

  3. [原创]Visual Studio 使用 Just My Code引起无法断点

    今天遇到的问题,同样的代码,在一台机器上用Release配置可以命中断点,在另一台上用Release断点就都失效了.后来发现是因为断点失效的机器上设置了Just My Code.在Debug-Opti ...

  4. VS 与JIRA Bamboo的连接

    atlassian-vs-connector 可以百度下地址 一些配置     效果:        

  5. setAlpha与View Layer关系

    如果开启了硬件加速,它们两者是没有关系的.一个先执行,一个后执行. 如果View Layer type is VIEW_LAYER_NONE, 生成display list,然后加上alpha送入GP ...

  6. 浮动【电梯】或【回到顶部】小插件：iElevator.js

    iElevator.js 是一个jquery小插件,使用简单,兼容IE6,支持UMD和3种配置方式,比锚点更灵活. Default Options _defaults = { floors: null ...

  7. php日常日志写入格式记录

    从数据库取出数据数组格式保存 file_put_contents('/tmp/bak_trusted_list'.date('H').'.php', '<?php return '.var_ex ...

  8. Submit Text 快捷键总结

    Ctrl+D : 选择单词,重复可增加选择下一个相同的单词Ctrl+F : 查找内容Ctrl+G : 跳转到指定行Ctrl+H : 替换    Ctrl+J : 合并行(已选择需要合并的多行时)Ctr ...

  9. js阻止form表单重复提交

    防止表单重复提交的方法总体来说有两种,一种是在js中阻止重复提交:另一种是在后台利用token令牌实现,大致思路是生成一个随机码放到session和form表单的隐藏输入框中,提交表单时两者对比,表单 ...

  10. python的tab自动补全

    vi tab.py #!/usr/bin/env python # python startup file import sys import readline import rlcompleter ...