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com.jchanghong.crypto.digest.opt.package-info Maven / Gradle / Ivy

/**
 * OTP 是 One-Time Password的简写，表示一次性密码。
 * 

 * 计算OTP串的公式：
 * 
 * OTP(K,C) = Truncate(HMAC-SHA-1(K,C))
 * K：表示秘钥串
 * C：是一个数字，表示随机数
 * Truncate：是一个函数，就是怎么截取加密后的串，并取加密后串的哪些字段组成一个数字。
 * 
 *
 * @author looly
 */
package com.jchanghong.crypto.digest.opt;