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Description: 这是一个用Java实现ElGamal加密解密和签名验证的算法,还包含了一个安全电子邮件发送系统。
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Size: 127154 |
Author: 张格 |
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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。
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Size: 3120 |
Author: 杨平安 |
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Description: 这是一个用Java实现ElGamal加密解密和签名验证的算法,还包含了一个安全电子邮件发送系统。-Did soil stamp instance using Java wife of mother
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Size: 126976 |
Author: 张格 |
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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。
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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.
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Size: 3072 |
Author: 杨平安 |
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Description: ElGamal method is an aymetric method to crypt message. You can use ElGamal to crypt the key session of symetric method.
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Size: 6144 |
Author: mathlouthi |
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Description: el gamal decryption and encryption example
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Size: 1024 |
Author: bilih |
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Description: 一个ElGamal的例子,key是随机生成-El Gamal example with random key generation
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Size: 1024 |
Author: 蒋理 |
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Description: ElGamal algorithm in java
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Size: 11264 |
Author: stane |
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Description: this is elgamal key generating program
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Size: 1024 |
Author: sanket |
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Description: encryption and decryption algorithm for digital signature in java
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Size: 7168 |
Author: tuls |
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Description: ELGAMAL algorithm implementation in java
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Size: 1024 |
Author: Ananth |
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Description: ElGamal source code with bouncy castle library
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Size: 2048 |
Author: tque |
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Description: java编写的加密系统基于ElGamal算法能够对数字进行加密解密。-written in Java encryption system based on the ElGamal algorithm for encryption and decryption of digital.
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Size: 15360 |
Author: 张起 |
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Description: Algoritm Elgamal em java
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Size: 1024 |
Author: raul santos |
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