What encryption algorithm, can be encrypted after only the number + English letters

What encryption algorithm, can be encrypted after only the number + English letters
10:25:46
"Bubble" small Q
2014/10/22 10:25:46
No encryption
"Spit Groove" Week y
2014/10/22 10:25:58
How do you do that?
"Bubble" small Q
2014/10/22 10:25:59
No need to consider what encryption algorithm,
"Bubble" small Q
2014/10/22 10:26:08
You're sure it's encrypted, right?
"Bubble" Chen ZX
2014/10/22 10:26:09
The man who has been using VPN for a fee has been strong drifting ~
"Bubble" small Q
2014/10/22 10:26:26
Any symmetric/asymmetric encryption is a byte, then a hex,
"Bubble" small Q
2014/10/22 10:26:37
Isn't that the letter + number?
"Bubble" small Q
2014/10/22 10:26:54
Do not bytes to Base64, do not also meet the need?
"Spit Groove" Week y
2014/10/22 10:27:20
B64 will appear as equals
"Bubble" small Q
2014/10/22 10:27:27
.. Oh, huh?
"Bubble" small Q
2014/10/22 10:27:40
Don't know if there's a Base64 Uri version?
10:28:30
"Spit Groove" Week y
2014/10/22 10:28:30
Have it?
"Bubble" small Q
2014/10/22 10:28:34
Http://zh.wikipedia.org/wiki/Base64
"Bubble" small Q
2014/10/22 10:28:39

"Bubble" small Q
2014/10/22 10:30:00
The simplest way, if you want the URL to transfer to Base64 over something urlencode a bit.
"Spit Groove" Week y
2014/10/22 10:30:01
That's still the idea.
10:30:54
"Bubble" small Q
2014/10/22 10:30:54
The simplest idea is the best idea.

"Bubble" small Q
The simplest idea is the best idea.
"Bubble" small Q
2014/10/22 10:32:18
Http://msdn.microsoft.com/en-us/library/system.web.httpserverutility.urltokenencode (v=vs.110). aspx
"Bubble" small Q
2014/10/22 10:32:24
This method is available on. NET
"Bubble" small Q
2014/10/22 10:32:39
The internal implementation logic is the way it says on Wikipedia above
10:33:23
"Spit Groove" Week y
2014/10/22 10:33:23
. NET 4.5 has only

Or symmetric add a secret, then to base 64 and then replace
"Spit Groove" Week y
2014/10/22 10:34:43

"Bubble" small Q
2014/10/22 10:35:07
http://referencesource.microsoft.com/#System. web/xsp/system/web/util/httpencoder.cs#816
"Bubble" small Q
2014/10/22 10:35:10
Let's see it come true.
10:35:27
"Bubble" small Q
2014/10/22 10:35:27
He replaced the rules within the source of the expression
"Spit Groove" Hu XJ
2014/10/22 10:35:45
This source code address is good
"Bubble" small Q
2014/10/22 10:36:29
http://referencesource.microsoft.com/#System. web/xsp/system/web/util/httpencoder.cs#764
"Bubble" small Q
2014/10/22 10:36:31
This is Decode.

What encryption algorithm, can be encrypted after only the number + English letters