It allows users to create a single store, called a keystore, that can hold multiple certificates within it. 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. Using this certificate implies trusting the entity that signed this certificate. If the JKS storetype is used and a keystore file doesnt yet exist, then certain keytool commands can result in a new keystore file being created. The keytool command can create and manage keystore key entries that each contain a private key and an associated certificate chain. The value of date specifies the number of days (starting at the date specified by -startdate, or the current date when -startdate isnt specified) for which the certificate should be considered valid. When there is no value, the extension has an empty value field. If a password is not specified, then the integrity of the retrieved information cant be verified and a warning is displayed. All keystore entries (key and trusted certificate entries) are accessed by way of unique aliases. The -sigalg value specifies the algorithm that should be used to sign the certificate. In this case, the certificate chain must be established from trusted certificate information already stored in the 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). Copy and paste the Entrust chain certificate including the -----BEGIN----- and -----END----- tags into a text editor such as Notepad. 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. 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. You can find the cacerts file in the JRE installation directory. The next certificate in the chain is one that authenticates the CA's public key. file: Retrieve the password from the file named argument. The following are the available options for the -keypasswd command: Use the -keypasswd command to change the password (under which private/secret keys identified by -alias are protected) from -keypass old_keypass to -new new_keypass. keytool -importcert -alias old_cert_alias -file new_cert_file.cer -keystore your_key_store.jks. Public key cryptography requires access to users' public keys. When you dont specify a required password option on a command line, you are prompted for it. The user can provide only one part, which means the other part is the same as the current date (or time). TLS is optional for the REST layer and mandatory for the transport layer. Users should be aware that some combinations of extensions (and other certificate fields) may not conform to the Internet standard. When data is digitally signed, the signature can be verified to check the data integrity and authenticity. You could have the following: In this case, a keystore entry with the alias mykey is created, with a newly generated key pair and a certificate that is valid for 90 days. You can use this command to import entries from a different type of keystore. Certificates are used to secure transport-layer traffic (node-to-node communication within your cluster) and REST-layer traffic (communication between a client and a node within your cluster). If there is no file, then the request is read from the standard input. The -Joption argument can appear for any command. The full form is ca:{true|false}[,pathlen:len] or len, which is short for ca:true,pathlen:len. Requested extensions arent honored by default. If the modifier env or file isnt specified, then the password has the value argument, which must contain at least six characters. As a result, e1 should contain ca, ca1, and ca2 in its certificate chain: The following are the available options for the -genkeypair command: {-groupname name}: Group name. In its printable encoding format, the encoded certificate is bounded at the beginning and end by the following text: X.500 Distinguished Names are used to identify entities, such as those that are named by the subject and issuer (signer) fields of X.509 certificates. For example, an Elliptic Curve name. Select the Edit Certificate Chain sub-menu from the pop-up menu and from there choose Remove Certificate. This is the X.500 Distinguished Name (DN) of the entity. If a password is not provided, then the user is prompted for it. The keytool command supports the following subparts: organizationUnit: The small organization (such as department or division) name. The name argument can be a supported extension name (see Supported Named Extensions ) or an arbitrary OID number. For example, suppose someone sends or emails you a certificate that you put it in a file named /tmp/cert. The following are the available options for the -genseckey command: {-providerclass class [-providerarg arg]}: Add security provider by fully qualified class name with an optional configure argument. Order matters; each subcomponent must appear in the designated order. Signature: A signature is computed over some data using the private key of an entity. You can use the java keytool to remove a cert or key entry from a keystore. Important: Be sure to check a certificate very carefully before importing it as a trusted certificate. If -keypass isnt provided at the command line and is different from the password used to protect the integrity of the keystore, then the user is prompted for it. If the original entry is protected with an entry password, then the password can be supplied with the -keypass option. If the public key in the certificate reply matches the user's public key already stored with alias, then the old certificate chain is replaced with the new certificate chain in the reply. You should be able to convert certificates to PKCS#7 format with openssl, via openssl crl2pkcs7 command. If you have the private key and the public key, use the following. In this case, besides the options you used in the previous example, you need to specify the alias you want to import. The user then has the option of stopping the import operation. Certificates that dont conform to the standard might be rejected by JRE or other applications. When -rfc is specified, the output format is Base64-encoded PEM; otherwise, a binary DER is created. Therefore, both 01:02:03:04 and 01020304 are accepted as identical values. For example, when the keystore resides on a hardware token device. If the chain doesnt end with a self-signed root CA certificate and the -trustcacerts option was specified, the keytool command tries to find one from the trusted certificates in the keystore or the cacerts keystore file and add it to the end of the chain. You can use a subset, for example: If a distinguished name string value contains a comma, then the comma must be escaped by a backslash (\) character when you specify the string on a command line, as in: It is never necessary to specify a distinguished name string on a command line. 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). Extensions can be marked critical to indicate that the extension should be checked and enforced or used. Commands for Generating a Certificate Request. If you have a java keystore, use the following command. Provided there is no ambiguity, the usage argument can be abbreviated with the first few letters or in camel-case style. Open an Administrator command prompt. The signer, which in the case of a certificate is also known as the issuer. When keys are first generated, the chain starts off containing a single element, a self-signed certificate. 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. {-providerclass class [-providerarg arg]}: Add security provider by fully qualified class name with an optional configure argument. You can then export the certificate and supply it to your clients. The following are the available options for the -changealias command: Use the -changealias command to move an existing keystore entry from -alias alias to a new -destalias alias. This is the expected period that entities can rely on the public value, when the associated private key has not been compromised. Note that the input stream from the -keystore option is passed to the KeyStore.load method. When both date and time are provided, there is one (and only one) space character between the two parts. If a key password is not provided, then the -storepass (if provided) is attempted first. If the certificate isnt found and the -noprompt option isnt specified, the information of the last certificate in the chain is printed, and the user is prompted to verify it. If -alias alias is not specified, then the contents of the entire keystore are printed. To import a certificate from a file, use the -import subcommand, as in. The keytool command can import and export v1, v2, and v3 certificates. 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. The keytool command supports these named extensions. keytool -importcert -alias myserverkey -file myserverkey.der -storetype JCEKS -keystore mystore.jck -storepass mystorepass keytool will attempt to verify the signer of the certificate which you are trying to import. When you supply a distinguished name string as the value of a -dname option, such as for the -genkeypair command, the string must be in the following format: All the following items represent actual values and the previous keywords are abbreviations for the following: Case doesnt matter for the keyword abbreviations. The destination entry is protected with -destkeypass. The option can appear multiple times. Importing Certificates in a Chain Separately. For such commands, when the -storepass option isnt provided at the command line, the user is prompted for it. The keytool command is a key and certificate management utility. 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. Existing entries are overwritten with the destination alias name. This option is equivalent to "-keystore path_to_cacerts -storetype type_of_cacerts". Users should ensure that they provide the correct options for -dname, -ext, and so on. You can then stop the import operation. All the data in a certificate is encoded with two related standards called ASN.1/DER. If you prefer, you can use keytool to import certificates. For example. The password value must contain at least six characters. Only when the fingerprints are equal is it assured that the certificate wasnt replaced in transit with somebody else's certificate (such as an attackers certificate). In some cases, such as root or top-level CA certificates, the issuer signs its own certificate. Creating a Self-Signed Certificate. Ensure that the displayed certificate fingerprints match the expected ones. 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. If a password is not provided, then the user is prompted for it. 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