sha256

Rehashing passwords without asking all users to change them

由 此生再无相见时 提交于 2019-12-11 11:44:07
问题 A former developer used the PHP hash() function with the SHA256 algorithm to store password hashes. To improve the security of the system, I'd like to start using crypt() with the Blowfish algorithm (unfortunately we don't have PHP 5.5 and thus password_hash() is not available). Since SHA256 is a non-reversible hashing algorithm, is there a way to start using crypt() with the salted passwords without asking everyone to reset their password? 回答1: You should use the compatibility library then.

Verification of Hashing password is not working

由 送分小仙女□ 提交于 2019-12-11 11:11:42
问题 I have asked a question of which I did get a lot of great feedback, along with a good answer. I assume that I am doing something wrong with my verification check of the 2 hashes. Perhaps the code in the loop is fine, but my code with understanding of bytes and base64 etc. is the problem? Here is the original question. Password Hashing - Why salt 60,000 times Problem is these hashes do not match if (resultHash.Equals(hashPassword)) Code public string BuildVerify() { string password = "";

Hashing a csv file in python with a key

由 二次信任 提交于 2019-12-11 09:59:34
问题 I have a csv file with 1000+ emailadreses which I want to hash using a SHA256 HMAC and a shared key, encoded to Base64. There was a similiar problem here, but I can't adapt the solution to work for me. I am new to python and I don't know where to change the code in order to make use of the shared key. This is the slightly adapted code from the answer: import csv import hashlib import hmac import base64 IN_PATH = 'test.csv' OUT_PATH = 'test_hashed.csv' ENCODING = 'utf8' HASH_COLUMNS = dict

Node.JS crypto.createHmac('sha256') command line analog

由 旧巷老猫 提交于 2019-12-11 08:48:04
问题 In Node.js I use following code hash = crypto.createHmac('sha256', SECRET).update(file).digest('hex'); to calculate HMAC. However Linux command line analog produces different hash code: > openssl sha256 -hmac "SECRET" file What is wrong in command line? What are correct arguments? 来源： https://stackoverflow.com/questions/50884630/node-js-crypto-createhmacsha256-command-line-analog

SignedData giving Invalid algorithm specified.exception

由 自作多情 提交于 2019-12-11 08:04:23
问题 I tried to sign and valid my signed data using myCert.pfx file private and public key. But while signing the data I am getting " Invalid algorithm specified." exception .Net framework we are using is 4.5 and the code is as below public static void CallMainMethod() { string str = "Sign and verify the data"; X509Certificate2 certificate = LoadPrivateKey(); byte[] hashBytes = GetDataHash(str); byte[] signature = GetDigitalSignature(hashBytes); } private static X509Certificate2 LoadPrivateKey() {

What is the fastest way to SHA-256 encode many short String values in Java (on an Intel CPU)?

由 徘徊边缘 提交于 2019-12-11 05:14:08
问题 There question is slightly related to these two questions, but with these two differences: 1) I want to know how to hook specific Intel instructions from the JVM (hopefully via existing libary) 2) I don't care about one large file, but millions of short (< 50 characters) String and Number objects. I noticed that Intel provides native extensions (https://software.intel.com/en-us/articles/intel-sha-extensions) for creating SHA256 hashes. Is there any existing library in Java that can hook these

Impact of SHA1 Certificate Deprecation

由 浪子不回头ぞ 提交于 2019-12-11 04:23:46
问题 I am currently developing in an environment where EAP-TLS authentication is being used on an embedded WiFi radio. On that radio, we load multiple certificates for authentication (a client certificate, a private key file for the client, and a root CA certificate). I have recently come across this Windows Blog post and a few other posts about the deprecation of the SHA1 hash algorithm for certificate signing. My main question/concern is that the radio that I am using does not support the use of

How to Hex Encode a SHA-256 Hash

由 ε祈祈猫儿з 提交于 2019-12-11 03:25:12
问题 How to Hex Encode a SHA-256 hash properly in C#? private static string ToHex(byte[] bytes, bool upperCase) { StringBuilder result = new StringBuilder(bytes.Length * 2); for (int i = 0; i < bytes.Length; i++) result.Append(bytes[i].ToString(upperCase ? "X2" : "x2")); return result.ToString(); } private string hashRequestBody(string reqBody) { string hashString; using (var sha256 = SHA256Managed.Create()) { var hash = sha256.ComputeHash(Encoding.Default.GetBytes(reqBody)); hashString = ToHex

How many iterations does the scram-sha-256 setting use in PostgreSQL 10?

由 冷暖自知 提交于 2019-12-11 03:24:43
问题 How many iterations does the scram-sha-256 setting use in PostgreSQL 10? The docs just say Setting this parameter to scram-sha-256 will encrypt the password with SCRAM-SHA-256. The build log reads. Add SCRAM-SHA-256 support for password negotiation and storage (Michael Paquier, Heikki Linnakangas) This proves better security than the existing md5 negotiation and storage method. 回答1: It's a compile-time variable in scram-common.h known as SCRAM_ITERATIONS_DEFAULT. Currently it's set to 4096.

关于metabase的启动问题

由 余生长醉 提交于 2019-12-11 03:21:13
发现这个metabase真的是很神奇，从github上原封不动download的代码，push到gitlab上，然后再从gitlab上clone下来想在本地执行，始终是没办法执行，比对了代码也是一模一样的。 报的错是： Refused to execute inline script because it violates the following Content Security Policy directive: "script-src 'self' 'unsafe-eval' https://maps.google.com https://apis.google.com https://www.google-analytics.com https://*.googleapis.com *.gstatic.com localhost:8080 'sha256-JQDbp3Mhu24XN1+s9uU0HkmkcixHffMicidPncBvl44=' 'sha256-th95qRHdfM3L4RZBzA4kCzxGwFYlM995AM5Jk99o8lI=' 'sha256-9BXohtg6TyBdzvQQ5FFJDMsrtNBx3p29yA8VDrZuug0='". Either the 'unsafe-inline' keyword, a hash ('sha256
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