Description: 本程序是用java程序包实现RSA安全认证算法的实现程序，可用于网络安全传输和数字签名-this procedure is used java package to achieve RSA Security Authentication Algorithm procedures, can be used for transmission of network security and digital signature Platform: |
Size: 983 |
Author:许可 |
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Description: 说明：
1、里面有什么：
1.1、org.bouncycastle.*下的所有软件是bouncycastle组织开发的软件包
1.2、org.infosecurity.*下的软件包括：
DES_CBC算法的实现
RSA算法的实现（包括：密钥生成、公钥加密和私钥解密、数字签名及签名验证）
数字信封的实现
利用数字信封实现大文件的加密、解密。
2、有什么用：
2.1 研究、学习信息安全中的密码学设计与实现技术。
2.2 当然如果大家觉得在其它地方用的上，我会觉得很高兴的。
3、还有什么改进：
3.1 对文件加密、解密的时候要频繁的IO，如果加一个缓冲区，比如10K、50K等，
只有缓冲区满了才写入DISK这样将提高效率。
3.2 RSA私钥积存的时候可以按PKCS8形式，再经BASE64编码保存比较好。-Note : 1, mean there : 1.1, org.bouncycastle .* of all software development organizations is bouncycastle package 1.2, org.infosecurity .* The software includes : DES_CBC algorithm to achieve the realization of the RSA algorithm (including : key generation, public key and private key encryption decryption, digital signatures and signature verification), the realization of digital envelope using digital envelope realize document encryption, decryption. Two, what is the use of : 2.1, learning the information security cryptography design and technology. 2.2 Of course, if you think in the other parts, I feel very happy. Three, what is there for improvement : 3.1 pairs of file encryption, decryption, and the time to frequent the IO, plus a buffer, such as 10K, 50K, the only buffer is needed for Platform: |
Size: 212992 |
Author:雷敏 |
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Description: 本程序是用java程序包实现RSA安全认证算法的实现程序，可用于网络安全传输和数字签名-this procedure is used java package to achieve RSA Security Authentication Algorithm procedures, can be used for transmission of network security and digital signature Platform: |
Size: 1024 |
Author:许可 |
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Description: 自己写的java版的加密解密网络算法应用。有对称，非对称，数字签名，等应用-himself wrote the java version of the network encryption and decryption algorithm application. A symmetric, asymmetric, digital signature, and other applications Platform: |
Size: 297984 |
Author:jimmyzyp |
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Description: Digital Signature Algorithm (DSA)是Schnorr和ElGamal签名算法的变种，被美国NIST作为DSS(DigitalSignature Standard)。算法中应用了下述参数：
p：L bits长的素数。L是64的倍数，范围是512到1024；
q：p - 1的160bits的素因子；
g：g = h^((p-1)/q) mod p，h满足h < p - 1, h^((p-1)/q) mod p > 1；
x：x < q，x为私钥 ；
y：y = g^x mod p ，( p, q, g, y )为公钥；
H( x )：One-Way Hash函数。DSS中选用SHA( Secure Hash Algorithm )。
p, q, g可由一组用户共享，但在实际应用中，使用公共模数可能会带来一定的威胁。签名及验证协议如下：
1. P产生随机数k，k < q；
2. P计算 r = ( g^k mod p ) mod q
s = ( k^(-1) (H(m) + xr)) mod q
签名结果是( m, r, s )。
3. 验证时计算 w = s^(-1)mod q
u1 = ( H( m ) * w ) mod q
u2 = ( r * w ) mod q
v = (( g^u1 * y^u2 ) mod p ) mod q
若v = r，则认为签名有效。
DSA是基于整数有限域离散对数难题的，其安全性与RSA相比差不多。DSA的一个重要特点是两个素数公开，这样，当使用别人的p和q时，即使不知道私钥，你也能确认它们是否是随机产生的，还是作了手脚。RSA算法却作不到。
Platform: |
Size: 136192 |
Author:wildkaede |
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Description: ElGamal算法的Java实现，Elgamal是用来进行数字签名的重要算法。-Java realize ElGamal algorithm, Elgamal digital signature is used to carry out the important algorithms. Platform: |
Size: 3072 |
Author:杨平安 |
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Description: 实用数字签名的步骤
（1）发送方使用MD5算法对原始信息进行计算，获得一个固定长度的信息摘要
（2）发送方用自己的私钥加密生成的信息生成发送方的数字签名，发送方把这个数字签名作为发送信息的附件和明文信息，一同用接收方的公钥进行加密，将加密后的密文一同发送给接收方；
（3）接收方首先把接收到的密文用自己的私钥解密，得到明文信息和数字签名，再用发送方的公钥对数字签名进行解密，然后使用相同的单向散列算法来计算解密得到的明文信息，得到信息摘要；对比计算出来的信息摘要和发送方发送过来的信息摘要是否一致-Practical steps to a digital signature
(1) sender MD5 algorithm used to calculate the original information, access to a fixed length message digest
(2) use their own sender s private key to generate encrypted information generated by the sender s digital signature, the sender of the digital signature as an annex to send a message and express information, together with the recipient s public key for encryption, will be encrypted ciphertext sent to the receiver together
(3) the recipient first received ciphertext with its own private key to decrypt received explicit information and digital signatures, and then the sender s public key to decrypt the digital signature, and then use the same one-way hash algorithm to calculate the explicit information to be decrypted, the message digest contrast calculated message digest and the sender sent the message digest are consistent Platform: |
Size: 23552 |
Author:张云 |
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Description: 这里以对字符串的签名和验证为例，说明数字签名函数用法。算法为MD5WITHRSA.-Here for the signature and verification of the string as an example to illustrate usage of the digital signature function. Algorithm MD5WITHRSA. Platform: |
Size: 1024 |
Author:mengmeng |
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Description: 本文件主要是java安全通信的代码包括：md5 密码加密与验证 对称加密与解密 非对称加密以解密 基于MD5信息摘要算法实现密码加密与验证 凯撒加密算法 数字签名与验证 消息验证码 消息摘要（都经过调试无错误）-java security of communications, including: md5 password encryption and authentication of non-symmetric encryption and decryption based on symmetric encryption to decrypt the message digest algorithm MD5 password encryption and digital signature authentication and encryption algorithms Caesar Message Authentication Code Message Digest Authentication Platform: |
Size: 519168 |
Author:qiao |
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Description: 软件是bouncycastle组织开发的软件包，包括DES_CBC算法的实现、RSA算法的实现（包括：密钥生成、公钥加密和私钥解密、数字签名及签名验证）、数字信封的实现、利用数字信封实现大文件的加密、解密。可以作为研究、学习信息安全中的密码学设计与实现技术。在原版的基础上进行一些改进，对文件加密、解密的时候要频繁的IO加一个缓冲区，RSA私钥积存的时候可以按PKCS8形式，再经BASE64编码保存。-Software development organization is bouncycastle package, including DES_CBC Algorithm, RSA algorithm implementation (including: key generation, public key encryption and private decryption, digital signature and signature verification), the realization of digital envelope using the envelope to achieve digital large file encryption and decryption. Can be used as research, study of information security design and implementation of cryptographic technology. On the basis of the original number of improvements, file encryption, decryption time to frequent the IO plus a buffer, RSA private key can PKCS8 accumulated when the form and then saved by the BASE64 encoding. Platform: |
Size: 212992 |
Author:鹿淑煜 |
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Description: 它是第一个既能用于数据加密也能用于数字签名的算法,本文件是rsa算法的java实现的代码-It is the first one that can be used both for data encryption can be used for digital signature algorithm, this document rsa algorithm java implementation code Platform: |
Size: 4096 |
Author:zheng |
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Description: 用JAVA语言设计并实现一个密码学综合工具，实现常用的称加密算法、非对称加密算法、HASH算法、MAC算法、数字签名算法-
Design and implement a comprehensive tool cryptography JAVA language, called achieve common encryption algorithms, asymmetric encryption algorithm, HASH algorithm, MAC algorithm, the Digital Signature Algorithm Platform: |
Size: 9040896 |
Author:LiYj |
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Search - digital signature algorithm java