sha256

What kind of hashing algorithm is used in the built-in HASH() function? I'm ideally looking for a SHA512/SHA256 hash, similar to what the SHA() function offers within the linkedin datafu UDFs for Pig. HASH function (as of Hive 0.11) uses algorithm similar to java.util.List#hashCode . Its code looks like this: int hashCode = 0; // Hive HASH uses 0 as the seed, List#hashCode uses 1. I don't know why. for (Object item: items) { hashCode = hashCode * 31 + (item == null ? 0 : item.hashCode()); } Basically it's a classic hash algorithm as recommended in the book Effective Java. To quote a great man

I can make an HMAC using the following: var encrypt = crypto.createHmac("SHA256", secret).update(string).digest('base64'); I am trying to decrypt an encoded HMAC with the secret: var decrypt = crypto.createDecipher("SHA256", secret).update(string).final("ascii"); The following was unsuccessful. How can I decrypt a HMAC with the key? I get the following error: node-crypto : Unknown cipher SHA256 crypto.js:155 return (new Decipher).init(cipher, password); ^ Error: DecipherInit error HMAC is a MAC/keyed hash, not a cipher. It's not designed to be decrypted. If you want to encrypt something, use a

I'm looking for an implementation of the SHA-256 hash function written in Python. I want to use it to get a better understanding of how the SHA-256 function works, and I think Python is the ideal language for this. Pseudo-code has the limitation that I can't run/test it, to see what my modifications of the code do to the output. PyPy's source contains a pure-python implementation of SHA-256 here . Poking around in that directory, you'll probably also find pure-python implementations of other standard hashes. initial_hash_values=[ '6a09e667','bb67ae85','3c6ef372','a54ff53a', '510e527f',

Ingress 及 Ingress Controller 简介 Ingress ：是 k8s 资源对象 ，用于对外暴露服务，该资源对象定义了不同主机名（域名）及 URL 和对应后端 Service（k8s Service）的绑定，根据不同的路径路由 http 和 https 流量。 Ingress Contoller ：是一个 pod服务 ，封装了一个 Web前端负载均衡器 ，同时在其基础上实现了 动态感知Ingress 并根据Ingress的定义动态生成 前端web负载均衡器的配置文件 ，比如 Nginx Ingress Controller 本质上就是一个 Nginx ，只不过它能根据 Ingress 资源的定义动态生成 Nginx 的配置文件，然后 动态 Reload 。 Ingress Controller 工作架构 借用 traefik 官方的图 Ingress Nginx 部署 下面是根据官方yaml文件基础上修改 apiVersion : v1 kind : Namespace metadata : name : ingress - nginx labels : app.kubernetes.io/name : ingress - nginx app.kubernetes.io/part-of : ingress - nginx --- kind :

Windows校验文件值的三种方式 win键+R键输入cmd调出命令行 查看MD5值： certutil -hashfile 文件名 MD5 查看 SHA1 certutil -hashfile 文件名 SHA1 查看SHA256 certutil -hashfile 文件名 SHA256 来源： https://www.cnblogs.com/cy666/p/11547461.html

I can use SHA256 in Scheme using external libraries (Java, C or system dependent) or using a specific Scheme implementation (like Chicken e.g.), but I wonder if there is a "pure" scheme implementation. I wrote an implementation today. Alas, R5RS has neither bytevectors nor binary I/O, so this uses the R7RS APIs for bytevectors and binary I/O. It should be easy to bridge those APIs to your Scheme implementation's native APIs (for example, I actually tested my implementation on Racket and Guile). A few notes: This code assumes case-sensitivity. This is the default for R7RS, but not R5RS, so if

I use jdbcRealm for security in my glassfish v3.0.1 b22. It is set up so that it use the USER table inside my database for authentication by following this blog: http://blogs.oracle.com/foo/entry/mort_learns_jdbc_realm_authentication . I got it working fine, if I leave the digest algorithm as plain text. However when i try to use SHA-256 for digest algorithm, it stop working. What I did is specify in Glassfish - Security - Realm - jdbcRealm - digest that I want SHA-256 (I just type SHA-256 inside digest field). Then I wrote a simple Java program to convert password text into SHA-256 hash. I

I've made encrypting of the password in my register script and they are stored in the database, and I have to use them to login, so I would want to use the unencrypted ones to login. I've read some of the threads in here but nothing is helping me. How can I add it in my login.php? The salt is also stored in the database. This is my register.php script for encrypting $hash = hash('sha256', $password1); function createSalt() { $text = md5(uniqid(rand(), TRUE)); return substr($text, 0, 3); } $salt = createSalt(); $password = hash('sha256', $salt . $hash); and this is my login.php with season /