using?System;
namespace?GoogleAuthorization
{
????public?static?class?base32
????{
????????public?static?byte[]?ToBytes（string?input）
????????{
????????????if?（string.IsNullOrEmpty（input））
????????????{
????????????????throw?new?ArgumentNullException（“input“）;
????????????}

????????????input?=?input.TrimEnd（‘=‘）;?
????????????int?byteCount?=?input.Length?*?5?/?8;?
????????????byte[]?returnArray?=?new?byte[byteCount];

????????????byte?curByte?=?0?bitsRemaining?=?8;
????????????int?mask?=?0?arrayIndex?=?0;

????????????foreach?（char?c?in?input）
????????????{
????????????????int?cValue?=?CharToValue（c）;

????????????????if?（bitsRemaining?>?5）
????????????????{
????????????????????mask?=?cValue?<????????????????????curByte?=?（byte）（curByte?|?mask）;
????????????????????bitsRemaining?-=?5;
????????????????}
????????????????else
????????????????{
????????????????????mask?=?cValue?>>?（5?-?bitsRemaining）;
????????????????????curByte?=?（byte）（curByte?|?mask）;
????????????????????returnArray[arrayIndex++]?=?curByte;
????????????????????curByte?=?（byte）（cValue?<????????????????????bitsRemaining?+=?3;
????????????????}
????????????}

????????????if?（arrayIndex?!=?byteCount）
????????????{
????????????????returnArray[arrayIndex]?=?curByte;
????????????}

????????????return?returnArray;
????????}

????????public?static?string?ToString（byte[]?input）
????????{
????????????if?（input?==?null?||?input.Length?==?0）
????????????{
????????????????throw?new?ArgumentNullException（“input“）;
????????????}

????????????int?charCount?=?（int）Math.Ceiling（input.Length?/?5d）?*?8;
????????????char[]?returnArray?=?new?char[charCount];

????????????byte?nextChar?=?0?bitsRemaining?=?5;
????????????int?arrayIndex?=?0;

????????????foreach?（byte?b?in?input）
????????????{
????????????????nextChar?=?（byte）（nextChar?|?（b?>>?（8?-?bitsRemaining）））;
????????????????returnArray[arrayIndex++]?=?ValueToChar（nextChar）;

????????????????if?（bitsRemaining?????????????????{
????????????????????nextChar?=?（byte）（（b?>>?（3?-?bitsRemaining））?&?31）;
????????????????????returnArray[arrayIndex++]?=?ValueToChar（nextChar）;
????????????????????bitsRemaining?+=?5;
????????????????}

????????????????bitsRemaining?-=?3;
????????????????nextChar?=?（byte）（（b?<????????????}

????????????if?（arrayIndex?!=?charCount）
????????????{
????????????????returnArray[arrayIndex++]?=?ValueToChar（nextChar）;
????????????????while?（arrayIndex?!=?charCount）?returnArray[arrayIndex++]?=?‘=‘;?
????????????}

????????????return?new?string（returnArray）;
????????}

????????private?static?int?CharToValue（char?c）
????????{
????????????var?value?=?（int）c;

????????????if?（value??64）
????????????{
????????????????return?value?-?65;
????????????}
????????????if?（value??49）
????????????{
????????????????return?value?-?24;
????????????}
????????????if?（value??96）
????????????{
????????????????return?value?-?97;
?????

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2019-11-13?01:22??GoogleAuthenticator-master\
?????文件????????5850??2019-11-13?01:22??GoogleAuthenticator-master\.gitignore
?????文件????????1004??2019-11-13?01:22??GoogleAuthenticator-master\GoogleAuthenticator.sln
?????目錄???????????0??2019-11-13?01:22??GoogleAuthenticator-master\GoogleAuthorization\
?????文件????????3453??2019-11-13?01:22??GoogleAuthenticator-master\GoogleAuthorization\base32.cs
?????文件????????3420??2019-11-13?01:22??GoogleAuthenticator-master\GoogleAuthorization\GoogleAuthenticator.cs
?????文件????????2545??2019-11-13?01:22??GoogleAuthenticator-master\GoogleAuthorization\GoogleAuthenticator.csproj
?????文件?????????873??2019-11-13?01:22??GoogleAuthenticator-master\GoogleAuthorization\Program.cs
?????目錄???????????0??2019-11-13?01:22??GoogleAuthenticator-master\GoogleAuthorization\Properties\
?????文件????????1326??2019-11-13?01:22??GoogleAuthenticator-master\GoogleAuthorization\Properties\AssemblyInfo.cs
?????文件????????1028??2019-11-13?01:22??GoogleAuthenticator-master\README.md