OPT一次性动态口令验证算法。根据动态支持TOTP和HOTP验证。-A one-time dynamic password authentication algorithm OPT. According to dynamic support for TOTP and HOTP authentication.

OATH 标准 TOTP算法,根据令牌种子计算当前的OTP 口令-OATH standrad alrithm

totp算法用Javascr ipt实现，实现了totp中的所有功能(The totp algorithm is implemented in Javascr ipt and implements all the functions in totp.)