K key This option allows you to set the key used for encryption or decryption. This is the key directly used by the cipher algorithm. If no key is given OpenSSL will derive it from a password. This process is described in PKCS5#5 (RFC-2898).-md messagedigest This specifies the message digest which is used for key derivation.. Run the following command to decrypt the. View the content of CSR (Certificate Signing Request) We can use the following command to generate a CSR using the key we created in the previous example: ~]# openssl req -new -key ca.key -out client.csr. Syntax to view the content of this CSR: ~]# openssl req -noout -text -in <CSR_FILE>. Sample output from my terminal:.
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