This article covers the creation of a new Java keystore using Java keytool.
Dec 19, 2019 Generate Keystores To generate keystores for signing Android apps at the command line, use: $ keytool -genkey -v -keystore my-key.keystore -alias aliasname -keyalg RSA -keysize 2048 -validity 10000 A debug keystore which is used to sign an Android app during development needs a specific alias and password combination as dictated by Google. How to generate a Certificate Signing Request (CSR) via Java Keystore A CSR is encoded text that contains information about the certificate requester. This information includes, but is not limited to, the publisher name for the certificate (referred to as a “Common Name”), organization name (if applicable), and a contact email for the.
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You can watch the video below for a tutorial.
If this task perform sequentially bit by bit basis, those ciphers known as “ stream ciphers“. A stream ciphers is a symmetric key cipher where plaintext bits are combined with a pseudo-random cipher called keystream.Unlike stream ciphers, a block cipher takes fixed length block of plaintext & generate a block of ciphertext of the same length. Most block ciphers are designed to apply a simpler function repeatedly to the block. Round key generation rc5 block diagram. Below shows the asymmetric key usage (page 68 – CWSP Official Study Guide) Stream Ciphers Vs Block CiphersDuring cryptographic process, the plaintext needs to be combine with random data bits to create ciphertext.
Or, you can check the step by step guidelines below.
1. Create a new keystore:
Open a command prompt in the same directory as Java keytool; alternatively, you may specify the full path of keytool in your command. Pay close attention to the alias you specify in this command as it will be needed later on.keytool -genkey -alias mydomain -keyalg RSA -keystore KeyStore.jks -keysize 2048
2. Generate a CSR based on the new keystore:keytool -certreq -alias mydomain -keystore KeyStore.jks -file mydomain.csr
Answer each question when prompted. Use the chart below to guide you through the process:
Field | Example |
---|---|
First & Last Name | Domain Name for SSL Certificates Entity Name for Code Signing |
Organizational Unit | Support (Optional, e.g. a department) |
Organization | GMO GlobalSign Inc (Entity's Legal Name) |
City / Locality | Portsmouth (Full City name) |
State / Province | New Hampshire (Full State Name) |
Country Code | US (2 Letter Code) |
Confirm or reject the details by typing 'Yes' or 'No' and pressing Enter
Press Enter to use the same password as the keystore, alternatively specify a separate password and press enter.
You should now have a file called mydomain.csr which can be used to order or reissue a digital certificate from GlobalSign.
3. While the order processes, download the root & intermediate certificates for your order. You can identify the correct root & intermediate certificate based on hash algorithm and product type.
4. Import the root & intermediate certificates into your keystore. Import the root certificate first, followed by the intermediate. Make sure you specify the correct alias of 'root' and 'intermediate' respectively.keytool -import -trustcacerts -alias root -file root.crt -keystore KeyStore.jks
keytool -import -trustcacerts -alias intermediate -file intermediate.crt -keystore KeyStore.jks
5. Download & import your new certificate
Download your new certificate; save it as mydomain.crt.
Use the same alias as the private key so it associates them together. The alias here must match the alias of the private key in the first command.keytool -import -trustcacerts -alias mydomain -file mydomain.crt -keystore KeyStore.jks
The keystore is now complete and can be used for signing code or deploying on a Java based web server depending on the product you ordered.