时间:2021-07-01 10:21:17 帮助过:34人阅读
密钥生成
openssl genrsa 用于生成rsa私钥文件,生成是可以指定私钥长度和密码保护,具体参数请参考文档。
openssl genrsa -out rsa_private_key.pem 1024
openssl pkcs8 -topk8 -inform PEM -in rsa_private_key.pem -outform PEM -nocrypt -out private_key.pem
openssl rsa -in rsa_private_key.pem -pubout -out rsa_public_key.pem
第一条命令生成原始 RSA私钥文件 rsa_private_key.pem,第二条命令将原始 RSA私钥转换为 pkcs8格式,并输出文件名为private_key.pem的私钥,第三条根据私钥生成对应的RSA公钥 rsa_public_key.pem
从上面看出通过私钥能生成对应的公钥,因此我们将私钥private_key.pem用在服务器端,公钥发放给android跟ios等前端,反过来也可以,注意复制的时候只复制openssl后面的内容即可。
2.PHP用RSA加解密
开始前需要准备php openssl环境,开启PHP openssl扩展,window将php的配置文件php.ini中的
;extension=php_openssl.dll
改为
extension=php_openssl.dll
代码如下:
$private_key = '-----BEGIN RSA PRIVATE KEY----- MIICXQIBAAKBgQC3//sR2tXw0wrC2DySx8vNGlqt3Y7ldU9+LBLI6e1KS5lfc5jl TGF7KBTSkCHBM3ouEHWqp1ZJ85iJe59aF5gIB2klBd6h4wrbbHA2XE1sq21ykja/ Gqx7/IRia3zQfxGv/qEkyGOx+XALVoOlZqDwh76o2n1vP1D+tD3amHsK7QIDAQAB AoGBAKH14bMitESqD4PYwODWmy7rrrvyFPEnJJTECLjvKB7IkrVxVDkp1XiJnGKH 2h5syHQ5qslPSGYJ1M/XkDnGINwaLVHVD3BoKKgKg1bZn7ao5pXT+herqxaVwWs6 ga63yVSIC8jcODxiuvxJnUMQRLaqoF6aUb/2VWc2T5MDmxLhAkEA3pwGpvXgLiWL 3h7QLYZLrLrbFRuRN4CYl4UYaAKokkAvZly04Glle8ycgOc2DzL4eiL4l/+x/gaq deJU/cHLRQJBANOZY0mEoVkwhU4bScSdnfM6usQowYBEwHYYh/OTv1a3SqcCE1f+ qbAclCqeNiHajCcDmgYJ53LfIgyv0wCS54kCQAXaPkaHclRkQlAdqUV5IWYyJ25f oiq+Y8SgCCs73qixrU1YpJy9yKA/meG9smsl4Oh9IOIGI+zUygh9YdSmEq0CQQC2 4G3IP2G3lNDRdZIm5NZ7PfnmyRabxk/UgVUWdk47IwTZHFkdhxKfC8QepUhBsAHL QjifGXY4eJKUBm3FpDGJAkAFwUxYssiJjvrHwnHFbg0rFkvvY63OSmnRxiL4X6EY yI9lblCsyfpl25l7l5zmJrAHn45zAiOoBrWqpM5edu7c -----END RSA PRIVATE KEY-----'; $public_key = '-----BEGIN PUBLIC KEY----- MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC3//sR2tXw0wrC2DySx8vNGlqt 3Y7ldU9+LBLI6e1KS5lfc5jlTGF7KBTSkCHBM3ouEHWqp1ZJ85iJe59aF5gIB2kl Bd6h4wrbbHA2XE1sq21ykja/Gqx7/IRia3zQfxGv/qEkyGOx+XALVoOlZqDwh76o 2n1vP1D+tD3amHsK7QIDAQAB -----END PUBLIC KEY-----'; //echo $private_key;$pi_key = openssl_pkey_get_private($private_key);//这个函数可用来判断私钥是否是可用的,可用返回资源id Resource id$pu_key = openssl_pkey_get_public($public_key);//这个函数可用来判断公钥是否是可用的 print_r($pi_key);echo"\n"; print_r($pu_key);echo"\n"; $data = "aassssasssddd";//原始数据$encrypted = ""; $decrypted = ""; echo"source data:",$data,"\n"; echo"private key encrypt:\n"; openssl_private_encrypt($data,$encrypted,$pi_key);//私钥加密$encrypted = base64_encode($encrypted);//加密后的内容通常含有特殊字符,需要编码转换下,在网络间通过url传输时要注意base64编码是否是url安全的echo$encrypted,"\n"; echo"public key decrypt:\n"; openssl_public_decrypt(base64_decode($encrypted),$decrypted,$pu_key);//私钥加密的内容通过公钥可用解密出来echo$decrypted,"\n"; echo"---------------------------------------\n"; echo"public key encrypt:\n"; openssl_public_encrypt($data,$encrypted,$pu_key);//公钥加密$encrypted = base64_encode($encrypted); echo$encrypted,"\n"; echo"private key decrypt:\n"; openssl_private_decrypt(base64_decode($encrypted),$decrypted,$pi_key);//私钥解密echo$decrypted,"\n";
结果:
原数据为:我的帐号是:shiki,密码是:matata 加密成功,加密后数据(base64_encode后)为:X6q/u/hUW4o7z0tETaWuRt3ahvgT9/m+yiqABDDs9ccHRekB0YU9UAv5zA/VZawLoDVhiyl9bAc3WHeRIexz+gybUJKkI69RFkWHL5n3llfCeTdnSXIQ4Aa+ysfmCicxXwMeP2vUWZBcxJiRVLiGGe1shJjw/TxvmocOlaFRVnQ= 解密成功,解密后数据为:我的帐号是:shiki,密码是:matata
以上就介绍了PHP RSA加解密示例,包括了方面的内容,希望对PHP教程有兴趣的朋友有所帮助。