keytool -importcert -alias old_cert_alias -file new_cert_file.cer -keystore your_key_store.jks. The -sigalg value specifies the algorithm that should be used to sign the self-signed certificate. Read Common Command Options for the grammar of -ext. This is specified by the following line in the security properties file: To have the tools utilize a keystore implementation other than the default, you can change that line to specify a different keystore type. Private Keys: These are numbers, each of which is supposed to be known only to the particular entity whose private key it is (that is, it is supposed to be kept secret). When you import a certificate reply, the certificate reply is validated with trusted certificates from the keystore, and optionally, the certificates configured in the cacerts keystore file when the -trustcacerts option is specified. You can find the cacerts file in the JRE installation directory. From the keytool man - it imports certificate chain, if input is given in PKCS#7 format, otherwise only the single certificate is imported. Where: tomcat is the actual alias of your keystore. During the import, all new entries in the destination keystore will have the same alias names and protection passwords (for secret keys and private keys). You use the keytool command and options to manage a keystore (database) of cryptographic keys, X.509 certificate chains, and trusted certificates. After you import a certificate that authenticates the public key of the CA that you submitted your certificate signing request to (or there is already such a certificate in the cacerts file), you can import the certificate reply and replace your self-signed certificate with a certificate chain. The Java keytool is a command-line utility used to manage keystores in different formats containing keys and certificates. Digitally Signed: If some data is digitally signed, then it is stored with the identity of an entity and a signature that proves that entity knows about the data. Be very careful to ensure the certificate is valid before importing it as a trusted certificate. The data is rendered unforgeable by signing with the entity's private key. Order matters; each subcomponent must appear in the designated order. If the alias doesnt point to a key entry, then the keytool command assumes you are adding a trusted certificate entry. You can use this command to import entries from a different type of keystore. This certificate chain and the private key are stored in a new keystore entry identified by alias. Generating the key pair created a self-signed certificate; however, a certificate is more likely to be trusted by others when it is signed by a CA. The following commands creates four key pairs named ca, ca1, ca2, and e1: The following two commands create a chain of signed certificates; ca signs ca1 and ca1 signs ca2, all of which are self-issued: The following command creates the certificate e1 and stores it in the e1.cert file, which is signed by ca2. The -help command is the default. Remember to separate the password option and the modifier with a colon (:). In Linux: Open the csr file in a text editor. To install the Entrust Chain/Intermediate Certificate, complete the following steps: 1. The keytool command can import and export v1, v2, and v3 certificates. Typically, a key stored in this type of entry is a secret key, or a private key accompanied by the certificate chain for the corresponding public key. Otherwise, the one from the certificate request is used. See Commands and Options for a description of these commands with their options. If the -trustcacerts option was specified, then additional certificates are considered for the chain of trust, namely the certificates in a file named cacerts. Note: All other options that require passwords, such as -keypass, -srckeypass, -destkeypass, -srcstorepass, and -deststorepass, accept the env and file modifiers. A keystore type defines the storage and data format of the keystore information, and the algorithms used to protect private/secret keys in the keystore and the integrity of the keystore. The term provider refers to a package or a set of packages that supply a concrete implementation of a subset of services that can be accessed by the Java Security API. These refer to the subject's common name (CN), organizational unit (OU), organization (O), and country (C). This may not be perfect, but I had some notes on my use of keytool that I've modified for your scenario. However, you can do this only when you call the -importcert command without the -noprompt option. A different reply format (defined by the PKCS #7 standard) includes the supporting certificate chain in addition to the issued certificate. An alias is specified when you add an entity to the keystore with the -genseckey command to generate a secret key, the -genkeypair command to generate a key pair (public and private key), or the -importcert command to add a certificate or certificate chain to the list of trusted certificates. If a password is not provided, then the user is prompted for it. What is the location of my alias keystore? Then, import it using the following command: keytool -import -trustcacerts -alias tomcat -file certificate.p7b -keystore yourkeystore.jks. Before you add the root CA certificate to your keystore, you should view it with the -printcert option and compare the displayed fingerprint with the well-known fingerprint obtained from a newspaper, the root CA's Web page, and so on. Submit myname.csr to a CA, such as DigiCert. In this case, the bottom certificate in the chain is the same (a certificate signed by the CA, authenticating the public key of the key entry), but the second certificate in the chain is a certificate signed by a different CA that authenticates the public key of the CA you sent the CSR to. If you press the Enter key at the prompt, then the key password is set to the same password as the keystore password. This certificate chain and the private key are stored in a new keystore entry that is identified by its alias. If the chain ends with a self-signed root CA certificate and the -trustcacerts option was specified, the keytool command attempts to match it with any of the trusted certificates in the keystore or the cacerts keystore file. 2. keytool -list -keystore ..\lib\security\cacerts. This certificate authenticates the public key of the entity addressed by -alias. From the Finder, click Go -> Utilities -> KeyChain Access. These are the only modules included in JDK that need a configuration, and therefore the most widely used with the -providerclass option. The keytool command can import X.509 v1, v2, and v3 certificates, and PKCS#7 formatted certificate chains consisting of certificates of that type. Step# 2. 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. See Certificate Conformance Warning. {-addprovider name [-providerarg arg]}: Add security provider by name (such as SunPKCS11) with an optional configure argument. Identify each of the certificates by the ---- BEGIN CERTIFICATE---- and ----END CERTIFICATE---- statements. Private and public keys exist in pairs in all public key cryptography systems (also referred to as public key crypto systems). Commands for Creating or Adding Data to the Keystore: Commands for Importing Contents from Another Keystore: Commands for Generating a Certificate Request: Commands for Creating or Adding Data to the Keystore. However, a password shouldnt be specified on a command line or in a script unless it is for testing, or you are on a secure system. See Certificate Chains. To display a list of keytool commands, enter: To display help information about a specific keytool command, enter: The -v option can appear for all commands except --help. The option can only be provided one time. The names arent case-sensitive. If -file file is not specified, then the certificate or certificate chain is read from stdin. If a file is not specified, then the CSR is output to -stdout. The following are the available options for the -printcertreq command: Use the -printcertreq command to print the contents of a PKCS #10 format certificate request, which can be generated by the keytool -certreq command. If there is no file, then the request is read from the standard input. If -alias alias is not specified, then the contents of the entire keystore are printed. Because you trust the CAs in the cacerts file as entities for signing and issuing certificates to other entities, you must manage the cacerts file carefully. If the alias does exist, then the keytool command outputs an error because a trusted certificate already exists for that alias, and doesnt import the certificate. The keytool command can handle both types of entries, while the jarsigner tool only handles the latter type of entry, that is private keys and their associated certificate chains. The following are the available options for the -certreq command: {-addprovider name [-providerarg arg]}: Add security provider by name (such as SunPKCS11) with an optional configure argument. The user must provide the exact number of digits shown in the format definition (padding with 0 when shorter). If a password is not provided, then the user is prompted for it. The cacerts file should contain only certificates of the CAs you trust. The -keypass value is a password that protects the secret key. The value for this name is a comma-separated list of all (all requested extensions are honored), name{:[critical|non-critical]} (the named extension is honored, but it uses a different isCritical attribute), and -name (used with all, denotes an exception). If the -v option is specified, then the certificate is printed in human-readable format, with additional information such as the owner, issuer, serial number, and any extensions. Users should be aware that some combinations of extensions (and other certificate fields) may not conform to the Internet standard. Use the -exportcert command to read a certificate from the keystore that is associated with -alias alias and store it in the cert_file file. Operates on the cacerts keystore . The password value must contain at least six characters. That is, there is a corresponding abstract KeystoreSpi class, also in the java.security package, which defines the Service Provider Interface methods that providers must implement. If, besides the -ext honored option, another named or OID -ext option is provided, this extension is added to those already honored. Create a keystore and then generate the key pair. The following are the available options for the -importkeystore command: {-srckeystore keystore}: Source keystore name, {-destkeystore keystore}: Destination keystore name, {-srcstoretype type}: Source keystore type, {-deststoretype type}: Destination keystore type, [-srcstorepass arg]: Source keystore password, [-deststorepass arg]: Destination keystore password, {-srcprotected Source keystore password protected, {-destprotected}: Destination keystore password protected, {-srcprovidername name}: Source keystore provider name, {-destprovidername name}: Destination keystore provider name, [-destkeypass arg]: Destination key password, {-providerclass class [-providerarg arg]}: Add security provider by fully qualified class name with an optional configure argument. The following are the available options for the -delete command: [-alias alias]: Alias name of the entry to process. When the -Joption is used, the specified option string is passed directly to the Java interpreter. In this case, a comma doesnt need to be escaped by a backslash (\). Some commands require a private/secret key password. If the certificate is read from a file or stdin, then it might be either binary encoded or in printable encoding format, as defined by the RFC 1421 Certificate Encoding standard. The command reads the request from file. This entry is placed in your home directory in a keystore named .keystore . Abstract Syntax Notation 1 describes data. Now a Certification Authority (CA) can act as a trusted third party. Later, after a Certificate Signing Request (CSR) was generated with the -certreq command and sent to a Certification Authority (CA), the response from the CA is imported with -importcert, and the self-signed certificate is replaced by a chain of certificates. This is because before you add a certificate to the list of trusted certificates in the keystore, the -importcert command prints out the certificate information and prompts you to verify it. You can use the java keytool to remove a cert or key entry from a keystore. System administrators can configure and manage that file with the keytool command by specifying jks as the keystore type. A password shouldnt be specified on a command line or in a script unless it is for testing purposes, or you are on a secure system. X.509 Version 2 introduced the concept of subject and issuer unique identifiers to handle the possibility of reuse of subject or issuer names over time. Error: ==== This step requires Vault Admin credentials using CyberArk authentication, and a restart of PTA services. Certificates that dont conform to the standard might be rejected by JRE or other applications. This option can be used independently of a keystore. See the code snippet in Sign a JAR file using AWS CloudHSM and Jarsigner for instruction on using Java code to verify the certificate chain. It is assumed that CAs only create valid and reliable certificates because they are bound by legal agreements. Ensure that the displayed certificate fingerprints match the expected ones. When dname is provided, it is used as the subject of the generated certificate. This standard is primarily meant for storing or transporting a user's private keys, certificates, and miscellaneous secrets. Commands for Generating a Certificate Request. If this attempt fails, then the keytool command prompts you for the private/secret key password. For example, if keytool -genkeypair is called and the -keystore option isnt specified, the default keystore file named .keystore is created in the user's home directory if it doesnt already exist. Otherwise, the password is retrieved as follows: env: Retrieve the password from the environment variable named argument. The following are the available options for the -printcrl command: Use the -printcrl command to read the Certificate Revocation List (CRL) from -file crl . Users should ensure that they provide the correct options for -dname, -ext, and so on. stateName: State or province name. Because there are two keystores involved in the -importkeystore command, the following two options, -srcprotected and -destprotected, are provided for the source keystore and the destination keystore respectively. The methods of determining whether the certificate reply is trusted are as follows: If the reply is a single X.509 certificate, then the keytool command attempts to establish a trust chain, starting at the certificate reply and ending at a self-signed certificate (belonging to a root CA). . keytool -certreq -alias <cert_alias> -file <CSR.csr> -keystore <keystore_name.jks>. The CSR is stored in the-file file. If -alias refers to a trusted certificate, then that certificate is output. This is a cross platform keystore based on the RSA PKCS12 Personal Information Exchange Syntax Standard. 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