Installing a new certificate to an old keystore often ends in installation errors or the SSL/TLS certificate not working properly. Important: We recommend you generate a new keystore following the process outlined in this section. Step 1: Use Keytool to Create a New Keystore See Tomcat: Create CSR & Install SSL/TLS Certificate with the DigiCert Utility. You can use the DigiCert Utility to generate your CSR and prepare your SSL/TLS certificate file for installation on your Tomcat server. If you are looking for a simpler way to create CSRs, and install and manage your SSL/TLS certificates, we recommend using the DigiCert ® Certificate Utility for Windows. To view these instructions in Spanish, see CSR para Tomcat and Tomcat Instalar Certificado SSL. To install your SSL certificate, see Tomcat Server: Install and Configure Your SSL/TLS Certificate. To create your certificate signing request (CSR), see Tomcat Server: Create Your CSR with Java Keytool. Restart Note: After you've installed your SSL/TLS certificate and configured the server to use it, you must restart the Tomcat service. Use these instructions to generate your certificate signing request (CSR) and install your SSL/TLS certificate on your Tomcat server using Java’s Keytool. The value is a concatenation of a sequence of subvalues.Use Java's Keytool to create a CSR and install your SSL/TLS certificate on your Tomcat (or other Java-based) server With the first form, the issue time is shifted by the specified value from the current time. The option value can be set in one of these two forms: The value of -startdate specifies the issue time of the certificate, also known as the "Not Before" value of the X.509 certificate's Validity field. The -keypass value must have at least six characters. If you press the Enter key at the prompt, then the key password is set to the same password as the keystore password. If a password is not provided, then the user is prompted for it. The value of -keypass is a password used to protect the private key of the generated key pair. If a distinguished name is not provided at the command line, then the user is prompted for one. The -dname value specifies the X.500 Distinguished Name to be associated with the value of -alias, and is used as the issuer and subject fields in the self-signed certificate. This algorithm must be compatible with the -keyalg value. The -sigalg value specifies the algorithm that should be used to sign the self-signed certificate. The -keyalg value specifies the algorithm to be used to generate the key pair, and the -keysize value specifies the size of each key to be generated. This certificate chain and the private key are stored in a new keystore entry that is identified by its alias. Wraps the public key in an X.509 v3 self-signed certificate, which is stored as a single-element certificate chain. Use the -genkeypair command to generate a key pair (a public key and associated private key). Options for each command can be provided in any order.Īll items not italicized or in braces (: Password provided through a protected mechanism The following notes apply to the descriptions in Commands and Options:Īll command and option names are preceded by a hyphen sign ( -). The keytool command stores the keys and certificates in a keystore. The keytool command also enables users to administer secret keys and passphrases used in symmetric encryption and decryption (Data Encryption Standard). Integrity means that the data hasn’t been modified or tampered with, and authenticity means that the data comes from the individual who claims to have created and signed it. When data is digitally signed, the signature can be verified to check the data integrity and authenticity. The keytool command also enables users to cache the public keys (in the form of certificates) of their communicating peers.Ī certificate is a digitally signed statement from one entity (person, company, and so on), which says that the public key (and some other information) of some other entity has a particular value. It enables users to administer their own public/private key pairs and associated certificates for use in self-authentication (where a user authenticates themselves to other users and services) or data integrity and authentication services, by using digital signatures. The keytool command is a key and certificate management utility.
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