JarCastingntc-jcrypto
ntc-jcrypto is module java cryptography
Maven
<dependency>
<groupId>com.streetcodevn</groupId>
<artifactId>ntc-jcrypto</artifactId>
<version>1.0.2</version>
</dependency>
1. An implementation of Shamir's Secret Sharing Algorithm 256-bits in Java
Usage
Use encode/decode Base64
String s = "nghiatcxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";
SSS sss = new SSS();
List<String> arr = sss.create(3, 6, s, true);
//System.out.println(arr);
for (int i=0; i<arr.size(); i++) {
System.out.println("shares["+i+"]: " + arr.get(i));
}
System.out.println("\nsecret: " + s);
System.out.println("secret.length: " + s.length());
String s1 = sss.combine(arr.subList(0, 3), true);
System.out.println("combines shares 1 length = " + arr.subList(0, 3).size());
System.out.println("secret: " + s1);
System.out.println("secret.length: " + s1.length());
String s2 = sss.combine(arr.subList(3, 6), true);
System.out.println("combines shares 2 length = " + arr.subList(3, 6).size());
System.out.println("secret: " + s2);
System.out.println("secret.length: " + s2.length());
String s3 = sss.combine(arr.subList(1, 5), true);
System.out.println("combines shares 3 length = " + arr.subList(1, 5).size());
System.out.println("secret: " + s3);
System.out.println("secret.length: " + s3.length());
Use encode/decode Hex
String s = "nghiatcxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";
SSS sss = new SSS();
List<String> arr = sss.create(3, 6, s, false);
//System.out.println(arr);
for (int i=0; i<arr.size(); i++) {
System.out.println("shares["+i+"]: " + arr.get(i));
}
System.out.println("\nsecret: " + s);
System.out.println("secret.length: " + s.length());
String s1 = sss.combine(arr.subList(0, 3), false);
System.out.println("combines shares 1 length = " + arr.subList(0, 3).size());
System.out.println("secret: " + s1);
System.out.println("secret.length: " + s1.length());
String s2 = sss.combine(arr.subList(3, 6), false);
System.out.println("combines shares 2 length = " + arr.subList(3, 6).size());
System.out.println("secret: " + s2);
System.out.println("secret.length: " + s2.length());
String s3 = sss.combine(arr.subList(1, 5), false);
System.out.println("combines shares 3 length = " + arr.subList(1, 5).size());
System.out.println("secret: " + s3);
System.out.println("secret.length: " + s3.length());
License
This code is under the Apache License v2.