To generate a random string, concatenate characters drawn randomly from the set of acceptable symbols until the string reaches the desired length. Here's some fairly simple and very flexible code for generating random identifiers. Read the information that follows for important application notes. Java.util.Random class; Math.random method: Can Generate Random Numbers of double type. ThreadLocalRandom class; 1) java.util.Random. For using this class to generate random numbers, we have to first create an instance of this class and then invoke methods such as nextInt, nextDouble, nextLong etc using that instance.
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- Random Key Generation Algorithm In Java Free
- Random Key Generation Algorithm In Java Code
- Random Key Generation Algorithm In Java Free
- Data Structure And Algorithm In Java
Greenhorn
posted 8 years agohii frnds need help in the algorithm required for random key generation algorithm and code for my project ....for encrypting the datafile ...and even for decrypting also
thnks ;
thnks ;
Saloon Keeper
posted 8 years agoWhat do you have so far, and where are you stuck making progress? If you haven't started yet, what ideas have you had?
Bartender
posted 8 years agoHang on, you should be showing some effort. You cannot expect people here to just tell you the algorithm and also give you the code. So if you need someone to do that then you must hire someone to do that.
Mohamed Sanaulla | My Blog | Author of Java 9 Cookbook | Java 11 Cookbook
Bartender
posted 8 years agoHi, and welcome to the Ranch!
It's not at all clear what your requirments are, or what part you're having trouble with. Please TellTheDetails(⇐click) so people will have a better understanding and be better able to guide you.
Also, please UseOneThreadPerQuestion.(⇐click) Posting the same question multiple times leads to fragmented discussions.
https://coderanch.com/t/571137/java/java/help-random-key-generation-algorithm
https://coderanch.com/t/571135/java/java/hii-algorithm-code-encryption-decryption
It's not at all clear what your requirments are, or what part you're having trouble with. Please TellTheDetails(⇐click) so people will have a better understanding and be better able to guide you.
Also, please UseOneThreadPerQuestion.(⇐click) Posting the same question multiple times leads to fragmented discussions.
https://coderanch.com/t/571137/java/java/help-random-key-generation-algorithm
https://coderanch.com/t/571135/java/java/hii-algorithm-code-encryption-decryption
Rancher
posted 8 years ago
Saloon Keeper
posted 8 years agoThe book 'Core Java 6' (I think it was volume II) had an excellent example of a generate/encode/decode java program.
Greenhorn
posted 8 years agoTim Moores wrote:What do you have so far, and where are you stuck making progress? If you haven't started yet, what ideas have you had?
we are thinking to develop a project .. in which on providing a key as an input ..should produce or generate a random key(number) which is used in encryption of a datafile ...could you suggest me any algorithm which is useful or wit any reference book ..please
thank you
Sheriff
![Random Key Generation Algorithm In Java Random Key Generation Algorithm In Java](/uploads/1/2/5/8/125872874/593663821.png)
Cryptography is highly complicated subject. It is very easy to mess things up in a single piece of code and compromise the security of the overall solution. To be able to generate safe keys for encryption, you'd need very strong knowledge in cryptography, which you're not going to infer from a single book or internet discussion. If you're interested, you might read how some innocuous shortcomings in the design and use of the Enigma encoding machine helped the allies break the cipher in the WW2.
If you need the encryption to survive a determined attack, you should definitely obtain proper security certificate from a professional company and use that to do the encryption. Somebody (not me) might be able to help you with the details. If this top-notch security is not actually your goal, a simpler solution might suffice. In any case, the Security forum would be probably better suited for the discussion.
If you need the encryption to survive a determined attack, you should definitely obtain proper security certificate from a professional company and use that to do the encryption. Somebody (not me) might be able to help you with the details. If this top-notch security is not actually your goal, a simpler solution might suffice. In any case, the Security forum would be probably better suited for the discussion.
Greenhorn
posted 6 years agohii frnds need help in the algorithm required for random key generation algorithm and code for my project ....for encrypting the datafile ...and even for decrypting also
Rancher
posted 6 years agoRandom Key Generation Algorithm In Java Free
Tim asked a spot-on question way back when:Tim Moores wrote:What do you have so far, and where are you stuck making progress? If you haven't started yet, what ideas have you had?
Bartender
posted 6 years agodurai pandi wrote:hii frnds need help in the algorithm required for random key generation algorithm and code for my project ....for encrypting the datafile ...and even for decrypting also
Authentication unique keys and salts generator. How to update the WordPress Authentication Keys and Salts – the hard wayThere are 3 steps to resetting the keys and salts 1. Backup your WordPress database and wp-config.php fileIf you’re running on your WordPress site, simply run a quick backup, wait until it’s complete and continue on.
Durai,
1. Welcome to JavaRanch.
2. Please don't revive old threads to simply re-post the same question. It's called 'hi-jacking' - and it's frowned on on almost any site; not just ours.
Winston
'Leadership is nature's way of removing morons from the productive flow' - Dogbert
Articles by Winston can be found here
Articles by Winston can be found here
- Java Cryptography Tutorial
- Message Digest and MAC
- Keys and Key Store
- Generating Keys
- Digital Signature
- Cipher Text
- Java Cryptography Resources
- Selected Reading
Java provides KeyGenerator class this class is used to generate secret keys and objects of this class are reusable.
To generate keys using the KeyGenerator class follow the steps given below.
Step 1: Create a KeyGenerator object
The KeyGenerator class provides getInstance() method which accepts a String variable representing the required key-generating algorithm and returns a KeyGenerator object that generates secret keys.
Create KeyGenerator object using the getInstance() method as shown below.
Step 2: Create SecureRandom object
The SecureRandom class of the java.Security package provides a strong random number generator which is used to generate random numbers in Java. Instantiate this class as shown below.
Step 3: Initialize the KeyGenerator
![Java Java](/uploads/1/2/5/8/125872874/905212870.png)
The KeyGenerator class provides a method named init() this method accepts the SecureRandom object and initializes the current KeyGenerator.
Random Key Generation Algorithm In Java Code
Initialize the KeyGenerator object created in the previous step using the init() method.
Example
Following example demonstrates the key generation of the secret key using the KeyGenerator class of the javax.crypto package.
Random Key Generation Algorithm In Java Free
Output
Data Structure And Algorithm In Java
The above program generates the following output −