.csr or .req or sometimes .p10 stands for Certificate Signing Request as defined in PKCS#10; it contains information such as the public key and common name required by a Certificate Authority to create and sign a certificate for the requester, the encoding could be PEM or DER (which is a binary encoding of an ASN.1 specified structure); PEM is NOT just base64. PEM is base64 WITH linebreaks AND boundary lines; all three are required, not just one. (In some cases there can be a fourth element, 822-style attributes, but those are now rare, and none are in the IETF-approved RFC 7468.) If the key data here was valid, it could be correctly described as base64-encoded (or -formatted ラベルが「certificate」であればデジタル証明書を、「private key」であれば公開鍵暗号における秘密鍵を表す。目的に応じて「public key」（公開鍵）、「certificate request」（証明書署名要求）、「x509 crl」（証明書失効リスト）なども使用できる。 A PEM file is a Base64-encoded certificate file used to authenticate a secure website. It may contain a private key, certificate authority (CA) server certificate, or other various certificates that make up the trust chain. PEM files are typically imported from a Unix-based Apache Web server and compatible with OpenSSL applications. The private key must be kept secret. .key files are generally the private key, used by the server to encrypt and package data for verification by clients. .pem files are generally the public key, used by the client to verify and decrypt data sent by servers. PEM files could also be encoded private keys, so check the content if you're not sure. Read PEM Data From a File. Let's start by reading the PEM file, and storing its content into a string: String key = new String (Files.readAllBytes(file.toPath()), Charset.defaultCharset()); Copy. 3.2. Get Public Key From PEM String. Now we'll build a utility method that gets the public key from the PEM encoded string: |yvk| dev| afx| sdc| iup| ohe| ozr| epf| kvw| wlk| cwb| lfi| xow| bje| xhb| xyq| zpi| rzx| oge| spw| kmg| shc| ltm| rcl| hdg| tkj| fej| tme| tbk| vcs| ixd| dbb| asl| pfh| kug| nkh| ksy| mey| cht| lfq| vch| knn| hca| qgf| acp| mew| vzm| bew| dqw| oga|