有人请说明 RSA 算法的两个或三个应用。我听说 RSA 用于 SSL。真的吗?
我在解密字符串时遇到了上述异常.
以下是我的代码:
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.NoSuchAlgorithmException;
import javax.crypto.Cipher;
public class EncryptAndDecrypt {
public static Cipher createCipher () throws Exception{
Cipher cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding");
return cipher;
}
public static KeyPair generateKey () throws NoSuchAlgorithmException{
KeyPairGenerator keyGen = KeyPairGenerator.getInstance ("RSA");
keyGen.initialize(1024);
KeyPair key = keyGen.generateKeyPair();
return key;
}
public static byte [] encrypt (String str, Cipher cip, KeyPair key) {
byte [] cipherText = null;
try {
byte [] plainText = str.getBytes("UTF8");
cip.init(Cipher.ENCRYPT_MODE, key.getPublic());
cipherText = cip.doFinal(plainText);
} catch (Exception …Run Code Online (Sandbox Code Playgroud) 我将加密CLASSIFIED数据,我的数据必须使用最先进的加密保护.我使用AES加密数据,使用RSA加密密钥.我的RSA代码如下.请确认此代码是否安全:
static class Program
{
static void Main()
{
var csp = new RSACryptoServiceProvider(3072);
var privKey = csp.ExportParameters(true);
var pubKey = csp.ExportParameters(false);
string pubKeyString;
{
var sw = new System.IO.StringWriter();
var xs = new System.Xml.Serialization.XmlSerializer(typeof(RSAParameters));
xs.Serialize(sw, pubKey);
pubKeyString = sw.ToString();
}
{
//get a stream from the string
var sr = new System.IO.StringReader(pubKeyString);
//we need a deserializer
var xs = new System.Xml.Serialization.XmlSerializer(typeof(RSAParameters));
//get the object back from the stream
pubKey = (RSAParameters)xs.Deserialize(sr);
}
csp = new RSACryptoServiceProvider();
csp.ImportParameters(pubKey);
var plainTextData …Run Code Online (Sandbox Code Playgroud) C# 中是否有用于 RSA 算法的 mod 运算符?我一直在使用 % ,因为我认为这可以用作 mod,但是我得到的 c 和 m 的答案不正确,所以我意识到 % 不起作用。
double e = 13;
double d; //decryption
double de = 7;
d = ((de * euiler) + 1) / e;
double message = 25;
double c = Pow(message, e) % n;
double m = Pow(c, d) % n;
Run Code Online (Sandbox Code Playgroud) 给出 N, e, c 如下:
n = 35390004486354300347521848565413257959442624589297688131017877221807025004928966206454752329594506530598099849274956709610488234955109039874355077958460196991750855650029096905451
e = 65537
c = 34976328528100445602888072790831380493399287679380757676967266152942525578548886648293955777757882335796410272725253490310142371251759362170135820927390507970457244397459500624458
Run Code Online (Sandbox Code Playgroud)
我尝试了几种方法来解密它,比如factordb,yafu甚至发现了一个类似的问题,它被RsaCtfTool解决了。也许我的电脑的性能很糟糕......有人可以帮忙吗?非常感谢!