base64

Flash Loader and ByteArray

由 与世无争的帅哥 提交于 2020-01-06 03:53:07
问题 I need to be able to load a jpeg/png image from disk and show it in flex and send it to a server as a base64 encoded string. But once the image file is loaded, in my flash.display.LoaderInfo object, the bytes property (type of ByteArray ) contains more byte than the file content. Example: image file size: 3089 flash.display.LoaderInfo.bytesTotal:3089 flash.display.LoaderInfo.bytes.length:3155 As i need to encode the flash.display.LoaderInfo.bytes in base64 string, i don't know which part of

Android: get image from base64binary format

由 ぐ巨炮叔叔 提交于 2020-01-06 02:29:13
问题 I use web service to get image. The service response contains image in base64Binary format. I try to decode response data with Base64.decode() (http://iharder.sourceforge.net/current/java/base64/). See my code below: byte[] data = Base64.decode(responseString); Bitmap bmp = BitmapFactory.decodeByteArray(data, 0, data.length); imageView.setImageBitmap(bmp); decodeByteArray always return null. I try to save data in .png file. I can open this file on my PC and in the Android File Manager

is base64 encoding url safe?

由 人盡茶涼 提交于 2020-01-05 07:12:53
问题 I'm using a node.bcrypt.js hash returning hex numbers in node.js for a password reset token. user.reset_password_token = require('crypto').randomBytes(32).toString('hex' ); Should I also base64 encode the token before I pass it around in urls (ie: link reset email)? Is there any benefit to doing this? I seem to recall base64 encoding can contain forward slashes which would mess up the path: var token = user.reset_password_token; //is there any benefit to doing base64 encoding? var encoded

Convert.FromBase64String() throws “invalid Base-64 string” error

由 筅森魡賤 提交于 2020-01-05 06:28:31
问题 I have a key which is Base64 encoded. While trying to decode I am receiving the following error. The error is thrown by byte[] todecode_byte = Convert.FromBase64String(data); Error in base64DecodeThe input is not a valid Base-64 string as it contains a non-base 64 character, more than two padding characters, or an illegal character among the padding characters. I am using the below method to decode this: public string base64Decode(string data) { try { System.Text.UTF8Encoding encoder = new

Convert.FromBase64String() throws “invalid Base-64 string” error

由 ぃ、小莉子 提交于 2020-01-05 06:28:12
问题 I have a key which is Base64 encoded. While trying to decode I am receiving the following error. The error is thrown by byte[] todecode_byte = Convert.FromBase64String(data); Error in base64DecodeThe input is not a valid Base-64 string as it contains a non-base 64 character, more than two padding characters, or an illegal character among the padding characters. I am using the below method to decode this: public string base64Decode(string data) { try { System.Text.UTF8Encoding encoder = new

Do I need base64 encode my salt (for hashing passwords)?

由 怎甘沉沦 提交于 2020-01-05 05:55:25
问题 Excuse me for this very odd question. I understand the purpose of base64 encoding for transmitting data (i.e. MIME's Base64 encoding), but I don't know if I need to base64 encode my salts. I wrote an utility class (a base abstract class indeed): use Symfony\Component\Security\Core\Encoder\BasePasswordEncoder; abstract class AbstractCryptPasswordEncoder extends BasePasswordEncoder { /** * @return string */ protected abstract function getSaltPrefix(); /** * @return string */ protected abstract

django项目之配置jwt的token认证

由 雨燕双飞 提交于 2020-01-05 00:02:32
1. jwt简介 Json web token (JWT), 是为了在网络应用环境间传递声明而执行的一种基于JSON的开放标准（(RFC 7519).该token被设计为紧凑且安全的，特别适用于分布式站点的单点登录（SSO）场景。JWT的声明一般被用来在身份提供者和服务提供者间传递被认证的用户身份信息，以便于从资源服务器获取资源，也可以增加一些额外的其它业务逻辑所必须的声明信息，该token也可直接被用于认证，也可被加密。 2. jwt构成 jwt就是一段字符串, 由三段信息构成的, 将这三段信息文本用. 链接在一起就构成了jwt字符串, 就像这样: eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiYWRtaW4iOnRydWV9.TJVA95OrM7E2cBab30RMHrHDcEfxjoYZgeFONFh7HgQ 第一部分我们称它为头部(header), 第二部分我们称其为载荷(payload, 类似于飞机上承载的物品), 第三部分是签证(signature). header jwt的头部承载两部分信息: a. 声明类型, 这里是jwt b. 声明加密的算法,通常直接使用 HMAC SHA256 完整的头部就像下面这样的JSON: { 'typ':

Encoding.Default not working in Unity Player

由 不打扰是莪最后的温柔 提交于 2020-01-04 20:29:54
问题 I recently went thru a small issue with my app, which basically downloads a string and an image from my website, now it works perfectly in the Unity Editor, but when I build and run, it doesn't print the image properly anymore! Here is the important code byte[] data = sendMessage("https://mywebsite.com", values); string ret = Encoding.Default.GetString(data); var split = ret.Split(new string[] {"//"}, StringSplitOptions.None); byte[] texdata = Encoding.Default.GetBytes(split[1]); varstr =

base64 decode - nul in string

由 一个人想着一个人 提交于 2020-01-04 13:41:32
问题 I'm trying to create function that will run private API calls on some sites. All those sites are using authentication by signature of the API call as follows in php: base64_encode( hash_hmac('sha512', $post_data, base64_decode($secret), true) ) Using package digest and RCurl I can easily write as: base64Encode( hmac(key = base64Decode(secret), object = post_data, algo = 'sha512', raw = TRUE) ) I'm fighting whole day with the hmac key parameter input: key = base64Decode(secret) The issue is

Download image which is src attribute (base64)

由 牧云@^-^@ 提交于 2020-01-04 06:35:27
问题 through AJAX I receive a image in base64 which I adjunct to the src attribute of a img tag. I want to offer an option to download that image, is it possible to take the data of the src attribute and download it? This is because I cannot download the image again from the server. Thank you. 回答1: Just set the window.location to the encoded URI (or open a popup window), eg window.location.href = 'data:image/png;base64,iVBORw0KGgo.... 来源： https://stackoverflow.com/questions/13354037/download-image
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