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How to save a PNG image server-side, from a base64 data string

...o convert canvas drawings to PNG images. What I need now is to turn those base64 strings that this tool generates, into actual PNG files on the server, using PHP. ...
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The input is not a valid Base-64 string as it contains a non-base 64 character

... another console application after converting it to Byte array and then to Base64 string. This part works, but when the same stream is received at the application, it gets manipulated and is no longer a valid Base64 string. Some junk characters are getting introduced into the stream. ...
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Base64 length calculation?

After reading the base64 wiki ... 15 Answers 15 ...
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Http Basic Authentication in Java using HttpClient?

... Have you tried this (using HttpClient version 4): String encoding = Base64Encoder.encode(user + ":" + pwd); HttpPost httpPost = new HttpPost("http://host:post/test/login"); httpPost.setHeader(HttpHeaders.AUTHORIZATION, "Basic " + encoding); System.out.println("executing request " + httpPost....
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Why do we use Base64?

... Your first mistake is thinking that ASCII encoding and Base64 encoding are interchangeable. They are not. They are used for different purposes. When you encode text in ASCII, you start with a text string and convert it to a sequence of bytes. When you encode data in Base64, you...
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Converting Secret Key into a String and Vice Versa

... You can convert the SecretKey to a byte array (byte[]), then Base64 encode that to a String. To convert back to a SecretKey, Base64 decode the String and use it in a SecretKeySpec to rebuild your original SecretKey. For Java 8 SecretKey to String: // create new key SecretKey secret...
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What is base 64 encoding used for?

I've heard people talking about "base 64 encoding" here and there. What is it used for? 18 Answers ...
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NodeJS: How to decode base64 encoded string back to binary? [duplicate]

...ord hashing with salt, so I generated salt as binary, hashed the password, base64 encoded the password and salt then stored them into database. ...
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婚庆O2O:领跑的企业也就只走到B轮 - 资讯 - 清泛网 - 专注C/C++及内核技术

...出现死亡案例。而这近百位参赛选手,基本也是可以被「编码」归类的。 1。婚嫁一站式服务平台:婚礼纪、到喜啦、婚尚起义、591结婚、婚万家 这种是最省心的,类似于私人婚礼管家角色,基于预算、筹备阶段,全程介入,...
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What is the effect of encoding an image in base64?

If I convert an image (jpg or png) to base64, then will it be bigger, or will it have the same size? How much greater will it be? ...