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Title: Calculate The Message Digest of A Text Using The SHA-1 Algorithm in JAVA. Code

This Java code uses the SHA-1 algorithm to generate a message digest or hash of input text. It imports the necessary classes, defines a method to encrypt a string by applying SHA-1 and returning the hashed output, and includes a main method that tests it on two sample inputs and prints the results.

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Amol Shinde
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825 views2 pages

Title: Calculate The Message Digest of A Text Using The SHA-1 Algorithm in JAVA. Code

This Java code uses the SHA-1 algorithm to generate a message digest or hash of input text. It imports the necessary classes, defines a method to encrypt a string by applying SHA-1 and returning the hashed output, and includes a main method that tests it on two sample inputs and prints the results.

Uploaded by

Amol Shinde
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Title : Calculate the message digest of a text using the SHA-1 algorithm in JAVA.

Code :
import java.math.BigInteger;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

public class P7_SHA_1 {


public static String encryptThisString(String input)
{
try {
MessageDigest md = MessageDigest.getInstance("SHA-1");
byte[] messageDigest = md.digest(input.getBytes());
BigInteger no = new BigInteger(1, messageDigest);
String hashtext = no.toString(16);
while (hashtext.length() < 32) {
hashtext = "0" + hashtext;
}
return hashtext;
}
catch (NoSuchAlgorithmException e) {
throw new RuntimeException(e);
}
}
public static void main(String args[]) throws
NoSuchAlgorithmException
{
System.out.println("\n\nHashCode By SHA-1 Algorithm ");

String s1 = "Vilas Sonje";


System.out.println("\n" + s1 + " : " + encryptThisString(s1));

String s2 = "CNS LAB 6";


System.out.println("\n" + s2 + " : " + encryptThisString(s2)+"\n\n");
}
}

Output :

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