RSA就是他们三人姓氏开头字母拼在一起组成的。 RSA算法是一种非对称密码算法,所谓非对称,就是指该算法需要一对密钥,使用其中一个加密,则需要用另一个才能解密。 非对称算法主要有:RSA、Elgamal、背包算法、Rabin、D-H、ECC(椭圆曲线加密算法)。 使用最广泛的是RSA算法,Elgamal是另一种常用的非对称加密算法。 RSA...
//hash算法,参考hash算法privatefinalstaticString SIGN_ALGORITHM= "MD5withRSA";privatefinalstaticString ALGORITHM="RSA";publicstaticvoidmain(String[] args)throwsException {//动态生成公钥和私钥//Map<Integer, String> keyMap = genKeyPair();//读取已有的公钥和私钥Map<Integer, String> keyMap =getKeyPair...
再随机选取一个正整数e,使e满足条件:e<(N)且GCD(e,(N)=1(即e与(N)的最大公因数是1),根据扩展Euclid算法(Extended Euclidean Algorithm)计算de-1(mod ),即计算满足ed1(mod(N)的d。将e公开,而将d保密,就确定了RSA算法的公开密钥PK=(e,N),私人密钥SK=(d,N),密钥空间:K=(N,p,q,e,d)|N=pq...
Key privateK = keyFactory.generatePrivate(pkcs8KeySpec); Cipher cipher = Cipher.getInstance(keyFactory.getAlgorithm()); cipher.init(Cipher.ENCRYPT_MODE, privateK); int inputLen = data.length; ByteArrayOutputStream out = new ByteArrayOutputStream(); int offSet = 0; byte[] cache; int i = 0;...
NSData *data = [[NSData alloc] initWithBase64EncodedString:encryptedData options:0]; SecKeyAlgorithm algorithm = kSecKeyAlgorithmRSAEncryptionOAEPSHA1; OSStatus status = SecKeyCreateWithData((__bridge CFDataRef)data, (__bridge CFDictionaryRef)@{(__bridge id)kSecAttrKeyType: (__bridge id)kSecA...
One of them is RSA algorithm which play important role for better security. In this paper we use a hybrid approach using RSA algorithm with SLSB technique. This technique is applied directly on output of RSA algorithm. The results of hybrid approach compared with RSA.Ms. Renu Yadav...
KEY_FACTORY = KeyFactory.getInstance(KEY_ALGORITHM); }catch(NoSuchAlgorithmException e) { e.printStackTrace(); } }/** * 私钥加密 * *@paramdata *@paramkey *@return*@throwsException */publicstaticbyte[] encryptByPrivateKey(byte[] data,byte[] key)throwsException {PKCS8EncodedKeySpecencodedKey...
M,如果与原来的明 getch(); return 1; 程序运行结果及分析: 1.需要加密的明文如下: Among the various public key cryptosystem, RSA algorithm is the best choice in bo 38、th theory and application, and it is open used in digital signature and identification system. Modular exponentiation and ...
from cryptography.hazmat.primitives.hashes import HashAlgorithm def get_blind_factor(n: int) -> int: """ Args: n: RSA 密钥对中的参数 n Returns: 满足 1 < r < n 且 r 与 n 互质的数 r """ now = time.time_ns() count: int = 0 ...
- (NSData *)AESCryptWithOperation:(CCOperation)operation key:(NSData *)key iv:(NSData *)iv { CCCryptorRef cryptorRef = NULL; CCCryptorStatus status = CCCryptorCreate(operation, kCCAlgorithmAES, kCCOptionPKCS7Padding, [key bytes], [key length], [iv bytes], &cryptorRef); if ( status...