PHP openssl_x509_parse does not return data for CSR

Question

I used the following command to create the CSR:

openssl req -nodes -newkey rsa:2048 -keyout mytestserver.key -out mytestserver.csr 

I tried to decode mytestserver.csr with the following PHP code:

 <?php $mydata="-----BEGIN CERTIFICATE REQUEST----- MIICyDCCAbACAQAwgYIxCzAJBgNVBAYTAlVTMQswCQYDVQQIEwJOSDEQMA4GA1UE BxMHQ29uY29yZDESMBAGA1UEChMJTXljb21wYW55MQswCQYDVQQLEwJJVDETMBEG A1UEAxMKbXl0ZXN0LmNvbTEeMBwGCSqGSIb3DQEJARYPdGVzdGVyQHRlc3QuY29t MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA3CcljODQKIJQ9xnPFydW E6fRphmfxtDZF46/J6jT7ctzG3Mv//8p9ene60BCDIWdWiDXvUUUc02nb/qiiaP5 lALl6XeLKOKs6ZEC/lknDfgOBSjqvLz+UzlOXjRdhBpaawaEbVw4rh6idHWIOFGT lzuHmE8YBmJ7R+tfhmEETk5XtPRZ3RL173HH2R/f2YCh0uhMr4GqXVfHtWrkpiw7 gXjvaXFeQhslTSP7Pru8j39uYKqubwLTyJ1uoqHVVOIqmswz+WfSvn+c86VK44p0 oQQnFL1gHoUWBHSbTmU49ufOWog9oLHOo9GUnMRg9TntGL0s55rfmSTZ+qtyB8Lc 7wIDAQABoAAwDQYJKoZIhvcNAQEEBQADggEBALglJeJUBEmxTy1hE0jG4cPAaJe5 FOqaVCUDm4YeoTpLfYLgE7ZkWuqkhZdw4TR9wu4DkiYo9z94avrKzFj2Kq1JHjUX weYAHzGxtFO2IUuz7DSGfSvfJ0mMkAH+QtaxNUV2olnrdA8T5hRzgbZT2RTCc0GV iSyCKXj4O/yRt0lbBCdM/Lja3Yga2BrFtvcsqnaDO6kIj+x1YCpL3cpRsm+3XbvH dE02+hB/iHC0bE4lQciPCASOiXbMWASWxofFjyRCP+Ha+np/FqoxRF6DIUu10dCS wV2kkbQQhNsFuMzCJvYudsmG1ULUfjUTvCAgO9kdBweNg3nklzetoSWoE5k= -----END CERTIFICATE REQUEST-----"; print ("\r\n begin"); print_r(openssl_x509_parse($mydata)); print ("\r\n end"); 

But this gives an empty result.

Any idea of ​​using the PHP OpenSSL library to decode RSA CSR that I generated?

Answer 1

openssl_x509_parse() used to "analyze the X509 certificate." To analyze the certificate signing request, you can use openssl_csr_get_subject() and openssl_csr_get_public_key() .

To get public key information, you should use openssl_pkey_get_details() :

 $keyres = openssl_csr_get_public_key($mydata); $key = openssl_pkey_get_details($keyres); echo "$key[bits] bit public key follows:\n$key[key]\n";