Hello folks! welcome back to a new edition of our tutorial on PHP. In this tutorial guide, we are going to be studying about the PHP openssl_pkey_get_private() Function.
The openssl_pkey_get_private() function returns the private key.
This PHP function returns the private key from the given public/private key.
The openssl_pkey_get_private() function returns the private key.
This PHP function returns the private key from the given public/private key.
syntax
Following below is the syntax to use this function -
openssl_pkey_get_private ( mixed $key [, string $passphrase = "" ] ) : resource
READ: PHP | OpenSSL Functions
Parameter Details
Sr.No | Parameter | Description |
---|---|---|
1 | key | You can take the key from the .pem file or using private key generated from openssl_pkey_new(). |
2 | passphrase | If they key you are using is encrypted , than you will have to specify passphrase. |
Return Value
This function returns a resource identifier if there is no error, or it returns false if the key generation fails.
PHP Version
This PHP function works from PHP version greater than 5.0.0.
Example1
The following example illustrates the usage of the openssl_pkey_get_private() function -
<?php // Generate a new private (and public) key pair $privkey = openssl_pkey_new(); openssl_pkey_export($privkey, $yourprivatekey); $testprivatekey = openssl_pkey_get_private($yourprivatekey); if ($testprivatekey === false) { var_dump(openssl_error_string()); } else { var_dump($testprivatekey); } ?>
Output
When the above code is executed, it will produce the following result -
resource(3) of type (OpenSSL key)
Example2
The following example illustrates the usage of the PHP openssl_pkey_get_private() and PHP openssl_pkey_get_details() functions -
<?php $privkey = openssl_pkey_new(); openssl_pkey_export($privkey, $yourprivatekey); $testprivatekey = openssl_pkey_get_private($yourprivatekey); if ($testprivatekey === false) { var_dump(openssl_error_string()); } else { //var_dump($testprivatekey); $key_details = openssl_pkey_get_details($testprivatekey); print_r($key_details); } ?>
Output
When the above code is executed, it will produce the following result -
Array ( [bits] => 2048 [key] => -----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAnO1F0Gt03mgxLcDpRxlm VEh8sfIfan5o11EcoLaEwaTyKgMNm7A4Rs9LcG3fwkNjXo8XNRQv6OSrhl8y00AX +cPUb78Qp/K3INmyXr8UUVWy0BT+Rxq5kez1TmZhpITxUYLScEL8DPcghFyfstRa 5hP8hc0cwYM6N4ieOlXIxrdmbzTn92MeyiTstTvHxt8aGKbSdpmksWyNeqke22kM 9pBfEsf98XFh5HoQBQaQF6GXL5y00PWIdki7DTzYtXXPRGcQl/53M5HrGGdP0kGS uD4YOFXRWYtQR1ZYLa4Ej+BP0eOpfxXiME0aaH1/2iWqyi+bsvkdgFbu92j5ptsr yQIDAQAB -----END PUBLIC KEY----- [rsa] => Array ( [n] => ��E�kt�h1-��GfTH|��j~h�Q��* ��8F�Kpm��Cc^�5/�䫆_2�@��o��� Ù²^�QU���G��Nfa��Q��pB�� �\��Z�����:7��:U�Æ·fo4��c�$�;����v��l�z��i��_��qa�z���/��vH� <صu�Dg��w3��gO�A��>8U�Y�PGVX-�O���0Mh}�%��/���V��h��+� [e] => [d] => MK��C|��Y5��5}Z�R0;�S�I�V����M��0�Lw�r��R��|��C��d�W�}�#��v�[9iZI��1��&!��A�;8K�%}��`@ ������}��n b�]K�L#�~Sg�' 81!��2R]������`�vl�&�Z�@-q��7u�#����.��d�����]�*Z-�'�|�ܳ ?M j���Ã… [p] => �*&5IXM�U�$u�'��d,�$x��iR�1�ᙯ��A�Cxi`%�FR�5� ��!�a��C��֧t�^�� ��f�$��V�+�Ò¯��]v"�+=��I�w��RN��<�P�e�� 3-�"��^���|_�-�l��lD,���=�26�ۗXGg5�@}q��T.�j��A��#��m,>#YN}��,pk}g [dmp1] => �� �l5o�5L�����Þ…h)I�+��D�n�J!��ycP��1 =u>&��h-HT���K��j;�um �oO\�e��.�� X�%s��Ú•_�|Za3��z$�\n1�N1�u�j)��z� [dmq1] => ��n[������Ç£<��t��^��P��)�F@ni�� �gHꥴ(��@#s�!+$�D��]����{��I㯽l��[$��>i q|�$�GØ¡�I'R��^c "����e"k [iqmp] => �Å–ij� ��a6�W#�:��#bS?�Ó��S�r#�C�×±87])4��Z��`��Ý»��w��.�a�y��@ �Ñ“�p���s�XP.{�o9h�Bq��뵘�EU��n ��&S��tE� ) [type] => 0 )
Example3
The following example illustrates the usage of the openssl_pkey_get_private() function with passphrase -
<?php $privkey = openssl_pkey_new(); openssl_pkey_export($privkey, $testkey, 'helloworld'); $testprivatekey = openssl_pkey_get_private($testkey, 'helloworld'); if ($testprivatekey === false) { var_dump(openssl_error_string()); } else { //var_dump($testprivatekey); $key_details = openssl_pkey_get_details($testprivatekey); print_r($key_details); } ?>
Output
When the above code is executed, it will produce the following result -
Array ( [bits] => 2048 [key] => -----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAs4HV+NM9dQ1ssuxb9PhM 64Yn8RHgv7YKK33nZudmk6SCOr9yRo7immp+bkaA0Lt/9ONJP+UF5VCltpdNdHLb GDTo+TkK5NdTJDalON3L9EhB4cJeQaQQh59uJGf39Et0BJiYiINXsNdlc/pig1/Z XDRyhEtqQ6nZJkOIIWO0gpdj9xj2naq/wy6Oas4p3/A7EvN5nB22xfEVIptKUZzi YWV4Bs5y2OM3GRwVv+jLYKQ49S/ZKq7MpdCxcXC6YxyrlEIz4PL9cWRtybK3BINv JnCWrfWRhUtlAY/CvfXrq2PhXwHVcebsDOPob6A71TcZMirxFZVyqkC+4rGX+5be PwIDAQAB -----END PUBLIC KEY----- [rsa] => Array ( [n] => ��=u l��[��L�'� +}�f�f��:�rF��j~nF�л��I?��P��Mtr�4��9 ��S$6�8��HA��^A���n$g��Kt��W��es�b�_�\4r�KjC��&C�!c��c���.�j�)��;�y���"�JQ��aex�r��7��`�8�/�*�̥бqp�c��B3��qdmɲ��o&p��Ke�½��c�_�q����o�;�72*��r�@�â±—��? [e] => [d] => ��e��e�$% sဩQ��EUA�D��Bu��34$�v�#��P�\��uD��(�z�w+�z��aͲ5���X���q�Pŵڡ��%O+3��]+o�3�FM�*�Z^L��k�/�Ty��/��;�)�sB�Np�5�@�x�,8�z2�#�SyM�o�XÄ‹.��;��K�� ��ÚŠ��qsLLD ^��"j��*=Io{��7`a��{�l�á›…�B����#���\� [p] => ׳��à �tY�@��[N��n�p�Æ‹��f� ��?7/\��y�i�w�X�P�5�@��s BD�C⎓�| �*���JH��/��|`��+�3��]��oc?�fI�Ze�`�C�>U��|�"��ÚŠ:U��^��L��g� �u|@z��F%6�X/� ��Ú��+�_�Yh:��59}�D�&×›��Gc [dmp1] => i�*/ �U�̯�6�� ��|�>3�HP�hN��.�G���9��cxj*�!��0�ؼ��R��:�9E(�Z��$�&�&7>�9.Ih��E�z/�,�QR�"�'�;��^��xq [dmq1] => |�w��`��䛌�� ��3��b���AZ�t��.8���Q]��F�iI��2)�{<��G^ܵt��u�Mb��4I�YL�E�S�8a!�6��&Q�(�^����É�� [iqmp] => \p5��N�� $WC�j�� �|�{>d����Y f��9�3�$rF(ON��>�� ����%��`(� &�op� �}=C+��b�˝�#�G"�0T.���G`t�܈��^��\7 ) [type] => 0 )
Example4
The following example illustrates the usage of the openssl_pkey_get_private() function with .pem file -
<?php //creating private key $privkey = openssl_pkey_new(); openssl_pkey_export_to_file($privkey, 'C:/xampp/htdocs/modules/openssl/fortesting.pem'); //using .pem file with private key. $testprivatekey = openssl_pkey_get_private(file_get_contents('C:/xampp/htdocs/modules/openssl/fortesting.pem')); if ($testprivatekey === false) { var_dump(openssl_error_string()); } else { //var_dump($testprivatekey); $key_details = openssl_pkey_get_details($testprivatekey); print_r($key_details); } ?>
Output
When the above code is executed, it will produce the following result -
Array ( [bits] => 2048 [key] => -----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAqaka1+sKh3D4HgIDzER6 vr/DI5u6h1QF6Xm1q/nOduTn0vlx4bLv+QEbcElXV1Bss4W7wOZRkMIOwj4xcT+e PGKaN95JUyxC/NQ13+F6K5yUk0ish36BVusrHt0wdZj28f63gHm824D0yDnn+aJr s+vSuMppErUD/i0QUFnO86ypHi/zeb+QBEif4a82RtfwRIVUtE/Sxy08ct+1ogA9 pdBd47elLmcekz/dtSUqpUjLj5SNojS7AJCZ5LNxnLOzN3ryCQXGaAn8KHQ284Xs jlYBjSjXFLY/1fLDYDpQGOApoBj2vK9Io8MxFU3uss79Ezb6LwKZG6CmzlbldBrJ YQIDAQAB -----END PUBLIC KEY----- [rsa] => Array ( [n] => ���� �p��Dz�#��T�y��v��q��pIWWPl��Q���>1q?� [d] => �9:���Y��"��*xu�&��gt�� &"��{ ��!Px�r�hn#��!c%�u �Ê»�꛷x��7z��&��|��Ç”v�Ĩѳ�XT?΅��[w"�=e��m�1R_JH�/�hX��.�E���&&'�:�/:��.I�zdx@�6��)��i��1L�z��"X��>��]�t����Rh��g��!8�Y9�G�rÅœ��9z���z��~�����jo_�� [p] => Ù¥���+�iy��Ѷm:#`BF��Bj>����f�2W%�eIAn� ����۪.o� v�`tgg��a�L�%Ù±� L[��\6��`��sx]�~�bU�fF�/Oy�6�+~v��7u� [q] => ÇŽ�Ͱ�u(�.L��l��o�Gc�x��@4��r� `i�i�X��v��'�33X��c��_��m8��M���5#t"��^�{�j vSLi�X��mhÔ·I܀8� 1t� [dmp1] => ���6�$5�Eg�Q�1F"��8y��V`��\��A�{��0� ��ym�6�dUI<�8�f��\��"K�Khja5�z �w�'�m�F9�nv�rÏ‘FP]��i�%��߿L�1�m'�Y��4 @lth7� [dmq1] => il5w*�eG�~��z�2�{��*�"Óž���`�����y�r����%@�lq���De��U�z�� �s.��[ ��G�l_äh���8¢H4N�7$�25Ò£?�L� [iqmp] => 9"l@Ç™�O�[I)}��K�6A/f5S� ���\�u��>��C��� �z��]�B�-ry/��D��w��H|�g:��8���s̙��◻(�B�Eo�`0 )
Alright guys! This is where we are going to be rounding up for this tutorial post. In our next tutorial, we will be studying about the PHP openssl_pkey_get_public() Function.
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