sha256

I'm running a service that is using SHA-256 on two sides of the application - one is a server-side PHP implementation and the other is a client-side iOS implementation. The result of using the algorithm on both sides is the same alphanumeric string, except for the fact that all letters are capitalized on iOS and lower case on PHP. The fact that they are identical alphanumeric strings leads me to believe that SHA-256 is case insensitive, but I can't find any documentation supporting my assumption. Can someone show me some documentation to confirm this? If you are referring to a hexadecimal

I'm trying to port a PHP example of an API integration to Javascript / JQuery. In PHP, an encrypted string is created using the following code: $sig = base64_encode(hash_hmac('sha256', $sign, $this->secretAccessKey, true) whose functions are documented here: http://php.net/manual/en/function.hash-hmac.php http://us.php.net/base64_encode In Javascript, I'm using JQuery's crypto to do the HMAC piece: http://code.google.com/p/crypto-js/#HMAC-SHA256 and I'm trying to figure out if I also need to do a base64 encode, as it seems it is already in base64. This is the code I'm currently running: var

I've posted this question on the Nokia Developer forums so please bear with me. I'm writing an app which needs to find the SHA-256 hash of a URL keyed with a unique value – i.e. hmac('sha256', '27/3', '9EWVFmHpHN6n2YKW9QtvUqX3xbsFQUBovlrFddqnF7fpcSDA2q') . What would be the best way to do this in Java ME/J2ME? I've found many examples using the Mac class but this isn't supported in Java ME/J2ME. Thanks in advance. I managed to get things working, the solution is as follows: Digest digest = new SHA256Digest(); HMac hmac = new HMac(digest); hmac.init(new KeyParameter(appKeyHere)); hmac.update

public static string SHA256Hash(string str) { byte[] data = Encoding.UTF8.GetBytes(str); SHA256 shaM = new SHA256Managed(); var hashBytes = shaM.ComputeHash(data); return Convert.ToBase64String(hashBytes); } 来源： https://www.cnblogs.com/wangxlei/p/11679525.html

I am working with spark 2.2.0 and pyspark2. I have created a DataFrame df and now trying to add a new column "rowhash" that is the sha2 hash of specific columns in the DataFrame. For example, say that df has the columns: (column1, column2, ..., column10) I require sha2((column2||column3||column4||...... column8), 256) in a new column "rowhash" . For now, I tried using below methods: 1) Used hash() function but since it gives an integer output it is of not much use 2) Tried using sha2() function but it is failing. Say columnarray has array of columns I need. def concat(columnarray): concat_str

I have been looking all over google to find what the hex output of a SHA256 hash looks like. But I just can't seem to find it. So what does a SHA256 hash look like when it's converted to hexadecimal? dtb A SHA256 hash represented in hexadecimal consists of 64 hexadecimal characters, i.e. it matches the following regex: ^[A-Fa-f0-9]{64}$ Example: 7f83b1657ff1fc53b92dc18148a1d65dfc2d4b1fa3d677284addd200126d9069 来源： https://stackoverflow.com/questions/6630168/what-does-sha256-hexadecimal-string-look-like