sha256

问题 I'm sorry in advance if something bring you here and I talk about a platform that's not really well-known over the world despite featuring a well-known person dancing in their commercial. It's Shopee Open Platform API I talk about. I was trying to follow very properly their instruction here. https://open.shopee.com/documents?module=63&type=2&id=51 But stuck instantly at step 5 : Shop Authorization. First, I've been given a test partner id, a test key, and I need to set manually the test

问题 Goal: Get a list of files from my directory; get the SHA256 for each of those files Error: await is only valid in async function I'm not sure why that is the case since my function is already wrapped inside an async function.. any help is appreciated! const hasha = require('hasha'); const getFiles = () => { fs.readdir('PATH_TO_FILE', (err, files) => { files.forEach(i => { return i; }); }); } (async () => { const getAllFiles = getFiles() getAllFiles.forEach( i => { const hash = await hasha

问题 I have a database-driven web application where the primary keys of all data rows are obfuscated as follows: SHA256(content type + primary key + secret), truncated to the first 8 characters. The content type is a simple word, e.g. "post" or "message" and the secret is a 20-30 char ASCII constant. The result is stored in a separate indexed column for fast DB lookup. How do I calculate the probability of a hash collision in this scenario? I am not a mathematician at all, but a friend claimed

问题 I am trying to generate a signature using ECDSA with SHA256 in Bouncy Castle as follows, I add the provider in the begining I have built the ECPrivatekey Signature s_oSignature = Signature.getInstance("SHA256withECDSA", BouncyCastleProvider.PROVIDER_NAME); but step 3 throws "java.security.NoSuchAlgorithmException: no such algorithm: SHA256withECDSA for provider BC" . But same "SHA256withECDSA" thing when replaced with "SHA1withECDSA" prceeds without any exception. How is it possible? I am

问题 I am trying to generate a signature using ECDSA with SHA256 in Bouncy Castle as follows, I add the provider in the begining I have built the ECPrivatekey Signature s_oSignature = Signature.getInstance("SHA256withECDSA", BouncyCastleProvider.PROVIDER_NAME); but step 3 throws "java.security.NoSuchAlgorithmException: no such algorithm: SHA256withECDSA for provider BC" . But same "SHA256withECDSA" thing when replaced with "SHA1withECDSA" prceeds without any exception. How is it possible? I am

问题 I am trying to generate a signature using ECDSA with SHA256 in Bouncy Castle as follows, I add the provider in the begining I have built the ECPrivatekey Signature s_oSignature = Signature.getInstance("SHA256withECDSA", BouncyCastleProvider.PROVIDER_NAME); but step 3 throws "java.security.NoSuchAlgorithmException: no such algorithm: SHA256withECDSA for provider BC" . But same "SHA256withECDSA" thing when replaced with "SHA1withECDSA" prceeds without any exception. How is it possible? I am

问题 I am trying to generate a signature using ECDSA with SHA256 in Bouncy Castle as follows, I add the provider in the begining I have built the ECPrivatekey Signature s_oSignature = Signature.getInstance("SHA256withECDSA", BouncyCastleProvider.PROVIDER_NAME); but step 3 throws "java.security.NoSuchAlgorithmException: no such algorithm: SHA256withECDSA for provider BC" . But same "SHA256withECDSA" thing when replaced with "SHA1withECDSA" prceeds without any exception. How is it possible? I am

问题 I am trying to generate signature using ECDSA with secp256r1 curve (P256) and SHA256 algorithm for message hash. Also i am using Bouncy Castle libraries. Code below, public class MyTest { /** * @param args */ public static void main(String[] args) { new MyTest().getSign(); } void getSign() { // Get the instance of the Key Generator with "EC" algorithm try { KeyPairGenerator g = KeyPairGenerator.getInstance("EC"); ECGenParameterSpec kpgparams = new ECGenParameterSpec("secp256r1"); g.initialize

问题 Is sha256 secure to use in the login page of my website then encrypt it by base64_encode? I need your recommendations. Thanks from all. $username = $_POST['username']; $password= $_POST['password']; $sPassword= hash('sha256',$password); $ePassword= base64_encode($sPassword); $insertSQLQuery = $conn->query("INSERT INTO tbl_users (username,password) VALUES ('$username ','$ePassword')"); 回答1: There is no need to use the hash() method and is extremely pointless creating your own hashing

问题 I am trying to connect to an API that uses an outdated hmac hash authentication mechanism for the API's. For an instance: $signature = hash_hmac('sha256', $string_to_sign, $api_sec); vs the one generated in Go: h := hmac.New(sha256.New, []byte(authSecret)) h.Write([]byte(stringToSign)) signature := hex.EncodeToString(h.Sum(nil)) When I use the same stringToSign($string_to_sign) and same authSecret($api_sec) the signature generated with Go results as an invalid signature for the API. But if I