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Creating a KeyStore in JKS Format
Choose JKS as the type for the new keystore we will be creating as it is the most common and will look like what is seen in the image below: Save the keystore with a keystore password when prompted, just like this: Now that we have a keystore created to hold all our keys and certificates, let us try & create a new key pair.
This section explains how to create a KeyStore using theJKS format as the database format for both the private key, and theassociated certificate or certificate chain. By default, as specifiedin the java.security file, keytool usesJKS as the format of the key and certificate databases (KeyStore andTrustStores). A CA must sign the certificate signing request (CSR).The CA is therefore trusted by the server-side application to whichthe Adapter is connected.
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Note –The Android Keystore system lets you store cryptographic keys in a container to make it more difficult to extract from the device. Once keys are in the keystore, they can be used for cryptographic operations with the key material remaining non-exportable. Save the keystore with a keystore password when prompted, just like this: Now that we have a keystore created to hold all our keys and certificates, let us try & create a new key pair. Navigate to Tools in the menu bar and choose 'Generate Key Pair': Select the algorithm as DSA and the key size as 2048 or anything else as desired.
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Itis recommended to use the default KeyStore
where <c:JavaCAPS> isthe directory where Java CAPS is installed and <MyDomain> isthe name of your domain.
To Generate a KeyStore
Perform the following command.
Once prompted, enter the information required to generatea CSR. A sample key generation section follows.
If the KeyStore password is specified, then the password mustbe provided for the adapter.
Press RETURN when prompted for the key password (thisaction makes the key password the same as the KeyStore password).
This operation creates a KeyStore file clientkeystore in the current working directory. You must specify a fullyqualified domain for the “first and last name” question.The reason for this use is that some CAs such as VeriSign expect thisproperties to be a fully qualified domain name.
Thereare CAs that do not require the fully qualified domain, but it isrecommended to use the fully qualified domain name for the sake ofportability. All the other information given must be valid. If theinformation cannot be validated, a CA such as VeriSign does not signa generated CSR for this entry.
This KeyStore containsan entry with an alias of client.This entry consists of the generated private key and information neededfor generating a CSR as follows:
This command generates a certificate signing request which canbe provided to a CA for a certificate request. The file client.csr contains the CSR in PEM format.
Some CA (one trusted by the web server to which the adapteris connecting) must sign the CSR. The CA generates a certificate forthe corresponding CSR and signs the certificate with its private key.For more information, visit the following web sites:
or
If the certificate is chained with the CA’scertificate, perform step 4; otherwise, perform step 5 in the followinglist:
Perform the following command.
The command imports the certificate and assumes the client certificateis in the file client.cer and theCA’s certificate is in the file CARoot.cer.
Perform the following command to import the CA’scertificate into the KeyStore for chaining with the client’scertificate.
Perform the following command to import the client’scertificate signed by the CA whose certificate was imported in thepreceding step.
The generated file clientkeystoreKey influences on baby boomer generation. containsthe client’s private key and the associated certificate chainused for client authentication and signing. The KeyStore and/or clientkeystore, can then be used as the adapter’sKeyStore.
A KeyStore manages different types of entries. Each type of entry implements the KeyStore.Entry interface. Three basic KeyStore.Entry implementations are provided:
- KeyStore.PrivateKeyEntry
This type of entry holds a cryptographic
PrivateKey, which is optionally stored in a protected format to prevent unauthorized access. It is also accompanied by a certificate chain for the corresponding public key.Private keys and certificate chains are used by a given entity for self-authentication. Applications for this authentication include software distribution organizations which sign JAR files as part of releasing and/or licensing software.
- KeyStore.SecretKeyEntry
This type of entry holds a cryptographic
SecretKey, which is optionally stored in a protected format to prevent unauthorized access. - KeyStore.TrustedCertificateEntry
This type of entry contains a single public key
Certificatebelonging to another party. It is called a trusted certificate because the keystore owner trusts that the public key in the certificate indeed belongs to the identity identified by the subject (owner) of the certificate.This type of entry can be used to authenticate other parties.
Each entry in a keystore is identified by an 'alias' string. In the case of private keys and their associated certificate chains, these strings distinguish among the different ways in which the entity may authenticate itself. For example, the entity may authenticate itself using different certificate authorities, or using different public key algorithms.
Whether aliases are case sensitive is implementation dependent. In order to avoid problems, it is recommended not to use aliases in a KeyStore that only differ in case.
Whether keystores are persistent, and the mechanisms used by the keystore if it is persistent, are not specified here. This allows use of a variety of techniques for protecting sensitive (e.g., private or secret) keys. Smart cards or other integrated cryptographic engines (SafeKeyper) are one option, and simpler mechanisms such as files may also be used (in a variety of formats).
Typical ways to request a KeyStore object include relying on the default type and providing a specific keystore type.
- To rely on the default type: The system will return a keystore implementation for the default type.
- To provide a specific keystore type: The system will return the most preferred implementation of the specified keystore type available in the environment.
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Before a keystore can be accessed, it must be loaded. To create an empty keystore using the above load method, pass null as the InputStream argument.
Once the keystore has been loaded, it is possible to read existing entries from the keystore, or to write new entries into the keystore: Note that although the same password may be used to load the keystore, to protect the private key entry, to protect the secret key entry, and to store the keystore (as is shown in the sample code above), different passwords or other protection parameters may also be used.
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Every implementation of the Java platform is required to support the following standard KeyStore type:
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- PKCS12