The entries in the Provider have an unmodifiable set view that can be obtained using the method entrySet() in the class java.security.Provider. This method requires no parameters and it returns the unmodifiable set view for the entries in the Provider.A program that demonstrates this is given as follows −Example Live Demoimport java.security.*; import java.util.*; public class Demo {    public static void main(String[] argv) {       try {          SecureRandom sRandom = SecureRandom.getInstance("SHA1PRNG");          Provider p = sRandom.getProvider();          Set set = p.entrySet();          Iterator i = ... Read More

Web scraping not only excite the data science enthusiasts but to the students or a learner, who wants to dig deeper into websites. Python provides many webscraping libraries including, ScrapyUrllibBeautifulSoupSeleniumPython RequestsLXMLWe’ll discuss the lxml library of python to scrape data from a webpage, which is built on top of the libxml2 XML parsing library written in C, which helps make it faster than Beautiful Soup but also harder to install on some computers, specifically Windows.Installing and importing lxmllxml can be installed from command line using pip, pip install lxmlorconda install -c anaconda lxmlOnce lxml installation is complete, import the html ... Read More

An enumeration of the values in the hash table can be obtained using the method elements() in the class java.security.Provider. This method requires no parameters and it returns the enumeration of the values in the hash table.A program that demonstrates this is given as follows −Example Live Demoimport java.security.*; import java.util.*; public class Demo {    public static void main(String[] argv) {       try {          SecureRandom sRandom = SecureRandom.getInstance("SHA1PRNG");          Provider p = sRandom.getProvider();          Enumeration enumeration;          enumeration = p.elements();          System.out.println("The ... Read More

The parameters can be generated using the method generateParameters() in the class java.security.AlgorithmParameterGenerator. This method requires no parameters and it returns the AlgorithmParameter object.A program that demonstrates this is given as follows −Example Live Demoimport java.security.*; import java.util.*; public class Demo {    public static void main(String[] argv) {       try {          AlgorithmParameterGenerator apGenerator = AlgorithmParameterGenerator.getInstance("DiffieHellman");          apGenerator.init(1024);          AlgorithmParameters aParameters = apGenerator.generateParameters();          System.out.println(aParameters);       } catch (NoSuchAlgorithmException e) {          System.out.println("Error!!! NoSuchAlgorithmException");       } catch (ProviderException e) ... Read More

The algorithm name for the parameter generator can be obtained using the method getAlgorithm() in the class java.security.AlgorithmParameterGenerator. This method requires no parameters and it returns the algorithm name in string form.A program that demonstrates this is given as follows −Example Live Demoimport java.security.*; import java.util.*; public class Demo {    public static void main(String[] argv) {       try {          AlgorithmParameterGenerator apGenerator = AlgorithmParameterGenerator.getInstance("DiffieHellman");          apGenerator.init(1024);          String algorithm = apGenerator.getAlgorithm();          System.out.println("The Algorithm is: " + algorithm);       } catch (NoSuchAlgorithmException e) { ... Read More

We are going to cover some useful python tricks and tips that will come handy when you are writing program in competitive programming or for your company as they reduce the code and optimized execution. Get n largest elements in a list using the module heapq Example import heapq marks = [91, 67, 34, 56, 78, 99, 87, 23, 78, 66] print("Marks = ", marks) print("Largest =", heapq.nlargest(2, marks)) Output Marks = [91, 67, 34, 56, 78, 99, 87, 23, 78, 66] Largest = [99, 91] Get n smallest elements in a list using the ... Read More

The provider of the generator object can be obtained using the method getProvider() in the class java.security.AlgorithmParameterGenerator. This method requires no parameters and it returns the provider of the generator object.A program that demonstrates this is given as follows −Example Live Demoimport java.security.*; import java.util.*; public class Demo {    public static void main(String[] argv) {       try {          AlgorithmParameterGenerator apGenerator = AlgorithmParameterGenerator.getInstance("DiffieHellman");          apGenerator.init(1024);          Provider provider = apGenerator.getProvider();          System.out.println("The Provider is: " + provider);       } catch (NoSuchAlgorithmException e) { ... Read More

Image Processing Using OpenCVOpenCV(Open source computer vision) is an open source programming library basically developed for machine learning and computer vision. It provides common infrastructure to work on computer vision applications and to fasten the use of machine learning in commercial products.With more than 2.5 thousand optimized algorithms for both computer vision and machine learning are both classic and state-of-the-art algorithms. With so many algorithms, makes it to use the library for multiple purposes including face detection & recognization, identify objects, classify human actions in videos, track camera movements, join images together to produce a high resolution image of an ... Read More

The algorithm name for the KeyFactory can be obtained using the method getAlgorithm() in the class java.security.KeyFactory. This method requires no parameters and it returns the algorithm name for the KeyFactory.A program that demonstrates this is given as follows −Example Live Demoimport java.security.*; import java.util.*; import java.security.spec.*; public class Demo {    public static void main(String[] argv) throws Exception {       try {          KeyFactory kf = KeyFactory.getInstance("RSA");          String algorithm = kf.getAlgorithm();          System.out.println("The Algortihm is: " + algorithm);       } catch (NoSuchAlgorithmException e) { ... Read More

The algorithm name for the key pair generator can be obtained using the method getAlgorithm() in the class java.security.KeyPairGenerator. This method requires no parameters and it returns the algorithm name for the key pair generator.A program that demonstrates this is given as follows −Example Live Demoimport java.security.*; import java.util.*; public class Demo {    public static void main(String[] argv) {       try {          KeyPairGenerator kpGenerator = KeyPairGenerator.getInstance("DSA");          String algorithm = kpGenerator.getAlgorithm();          System.out.println("The Algorithm is: " + algorithm);       } catch (NoSuchAlgorithmException e) {     ... Read More