| 类 | 说明 |
|---|---|
| ECCryptor |
EC Cryptor based xor
origin ≡ origin ⊕ key ⊕ key
一、首先：生成随机数dk，在曲线上计算得到dk的倍点beta point，
beta point(public key) = basePointG(public key) * dk，
beta point(public key)作为公钥，dk作为私钥
二、加密：1）生成随机数rk，在曲线上计算得到rk的倍点gamma point，
gamma point(public key) = basePointG(public key) * rk，
由椭圆曲线特性可得出：beta point(public key) * rk = ECPoint S = gamma point(public key) * dk
2）ECPoint S = beta point(public key) * rk，把ECPoint S作为中间对称密钥，
通过HASH函数计算对称加密密钥：key = HmacSHA-512(ECPoint S)
3）加密：origin ⊕ key = cipher
4）打包加密数据Encrypted = {gamma point(public key), cipher}
三、解密：1）解析加密数据Encrypted： {gamma point(public key), cipher}，得到：gamma point(public key)，cipher
2）用第一步的私钥dk与gamma point(public key)进行计算得到：ECPoint S = gamma point(public key) * dk
3）通过HASH函数计算对称加密密钥：key = HmacSHA-512(ECPoint S)
4）解密：cipher ⊕ key = origin
|
| ECKey |
This is Elliptic Curve key
|
| ECPoint |
The EC point of lie on the curve
|
| EllipticCurve |
An implementation of an elliptic curve over a finite field.
|
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