Description: 利用java实现文件的AES加密功能
This Java AES Crypt package contains the Java class es.vocali.util.AESCrypt, which provides file encryption and decryption using aescrypt file format.
Requirements
The Java AES Crypt package only works in Java 6, but can be easily adapted to Java 5 by replacing the call to NetworkInterface.getHardwareAddress() with something else.
In order to use 256 bit AES keys, you must download and install "Java Cryptography Extension (JCE) Unlimited Strength Jurisdiction Policy Files" from http://java.sun.com/javase/downloads/index.jsp -Java files using the AES encryption This Java AES Crypt package contains the Java class es.vocali.util.AESCrypt, which provides file encryption and decryption using aescrypt file format. RequirementsThe Java AES Crypt package only works in Java 6, but can be easily adapted to Java 5 by replacing the call to NetworkInterface.getHardwareAddress () with something else. In order to use 256 bit AES keys, you must download and install Platform: |
Size: 35840 |
Author:王小军 |
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Description: ES（The Advanced Encryption Standard）是美国国家标准与技术研究所用于加密电子数据的规范。它被预期能成为人们公认的加密包括金融、电信和政府数字信息的方法。
AES 是一个新的可以用于保护电子数据的加密算法。明确地说，AES 是一个迭代的、对称密钥分组的密码，它可以使用128、192 和 256 位密钥，并且用 128 位（16字节）分组加密和解密数据。与公共密钥密码使用密钥对不同，对称密钥密码使用相同的密钥加密和解密数据。通过分组密码返回的加密数据 的位数与输入数据相同。迭代加密使用一个循环结构，在该循环中重复置换（permutations ）和替换(substitutions）输入数据。Figure 1 显示了 AES 用192位密钥对一个16位字节数据块进行加密和解密的情形。-ES (The Advanced Encryption Standard) are the United States National Institute of Standards and Technology for encrypting electronic data specification. It is expected to become the recognized encryption including financial, telecommunications and government figure information.
AES is a new electronic data can be used to protect the encryption algorithm. Specifically, AES is an iterative, symmetric-key password packet, it can use the keys 128,192 and 256, and with 128 (16 bytes) packet encryption and decryption of data. Password and public key to use of different keys, symmetric keys use the same password key encryption and decryption of data. Back through the block cipher encryption of data and input data the same as the median. Encrypted using a cycle of iterative structure, in the replacement cycle to repeat (permutations) and replacement (substitutions) input data. Figure 1 shows the AES with 192 keys on a 16-byte data block for encryption and decryption case. Platform: |
Size: 1024 |
Author:皮艾尔 |
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Description:
AES 是一种使用安全码进行信息加密的标准。
它支持 128 位、192 位和 256 位的密匙。
加密算法的实现在 ElAES.pas 单元中。
本人将其加密方法封装在 AES.pas 单元中，
只需要调用两个标准函数就可以完成字符串的加密和解密。
(* 密匙长度 *)
128 位支持长度为 16 个字符
192 位支持长度为 24 个字符
256 位支持长度为 32 个字符
所有加密和解密操作在默认情况下为 128 位密匙。-A popular method of product validation is using keys similar to VJJJBX-H2BBCC-68CF7F-2BXD4R-3XP7FB-JDVQBC. These compact keys can be derived using Symmetric Key Cryptosystems such as the Advanced Encryption Standard (AES).
Other Public Key Cryptosystems are available such as RSA. However, these systems generally produce larger keys (which the user will eventually have to enter into the program to unlock functionality). Smaller producing Cryptosystems exist, but it is the author s opinion that they are highly encumbered with patents. Quartz is one such example. It is a Public Key Encryption System that produces a smaller cipher text based on Hidden Field Equations (HFEs). The Quartz website is littered with phrases such as "must license" and "pay royalties".
The reader is also encouraged to investigate Signature Schemes (with Recovery) as an alternative method to producing Product Keys. An example is PSS-R, a Message Recovery Signature Scheme based on RSA. PSS-R is not suitable fo Platform: |
Size: 768000 |
Author:harris |
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Description: Modern symmetrical encryption systems use a starting “key” that is up to 256 bits long (for us civilians anyway) and combine this with an initialization-vector (also up to 256 bits long). By applying the vector to the key through some scary mathematics, millions of unique permutations can be created, and these are combined with the data to obscure it. This process can then be run in reverse to retrieve the original information (hence the term “symmetrical”).
A problem with these mathematical encryption systems is that the process is mathematically derived, and the algorithms published. For every encryption algorithm that gets created, eventually someone works out a mathematical way of solving it. Even the latest and greatest AES algorithms have now been theoretically cracked.
The idea that chaos theory could be used to generate encryption keys is not necessarily a new one, but as yet I have not seen any examples. Platform: |
Size: 185344 |
Author:Anbei |
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