* * * @throws Exception 如果加密过程中发生任何异常 */ public static void encrypt() throws Exception { // 原始文本 String originalText = "Hello, RSA encryption and decryption!"; // 公钥的Base64编码字符串 String publicKeyBase64 = "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEApzRwXn03DL1Hf...
因此rsa加密过程中涉及的a、N就被称为公钥(public key)。而用于解密的b就被称为密钥(private key)。完整演示代码如下: /* rsa.c: demo of RSA encryption and decryption */ #include <stdio.h> /* Choose 2 large primes */ const int p=89; const int q=97; const int phi=(p-1)*(q-1); ...
将加密过程(encryption)和解密过程(decryption)分别视为一种处理程序,分别用E和D表示表示。明文消息和密文消息分别用M和C表示。则公钥加密系统有如下四种特性: (a)对于加密后的密文C=E(M),对应的解密程序能够处理得到明文:D(C)=D(E(M))=M。 (b)加密过程E和解密过程D是容易计算的。 (c)由公开的加密程序...
加密和解密是任何密码系统的基本过程。有许多加密和解密算法可以使用；其中一种算法被称为RSA（Rivest-Shamir-Adlean）算法。本文着重于开发一个加密处理器，处理RSA演算法的密钥产生、密钥分配及加密处理，并讨论验证此核心模块所需的设计环境。Cryptoprocessors are becoming a standard tomake the data-usage more dis...
The invention discloses a communication data encryption and decryption method based on a DES encryption algorithm, an RSA encryption algorithm and fragile digital watermarking. The method includes the steps that (1), data to be encrypted and sent are obtained; (2), the data to be sent are ...
一)对称加密(Symmetric Cryptography) 对称加密是最快速、最简单的一种加密方式,加密(encryption)与解密(decryption)用的是同样的**(secret key)。对称加密有很多种算法,由于它效率很高,所以被广泛使用在很多加密协议的核心当中。 对称加密通常使用的是相对较小的**,一般小于256 bit。因为**越大,加密越强,但加密与...
Key Words: Cryptology; RSA; Encryption; Decryption RSA加密解密算法 RSA加密解密算法如下: ⑴取两个随机大素数p和q(保密); ⑵计算公开的模数n=pq(公开); ⑶计算秘密的欧拉函数φ(n)=(p-1)(q-1)(保密),两个素数p和q不再需要,应该丢弃,不要让任何人知道; ...
[6] Sun Hungmin,Wu Muen,HINEK M J,et al.Trading decryption for speeding encryption in Rebalanced-RSA[J].The Journal of Systems and Software 82,2009,82(9):1503-1512. [7] 赵军.基于Android平台加密算法的研究与实现[D].南京:南京理工大学,2012. ...
The greatly increased amount of computation involved in the asymmetric encryption/decryption process significantly cuts the channel capacity (bits per second of message information communicated). For roughly 20 years, for comparably secure systems, it has been possible to achieve a throughput 1,000 to...
RSA is a type of asymmetric encryption, which uses linked public and private keys. Symmetric encryption uses only a private key. How does the RSA algorithm work? Use of the RSA algorithm typically consists of four stages: key generation, key distribution, encryption and decryption: ...