hmac

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I've a script to download file from AWS S3 and it works from a separate server outside of AWS. But when I put this script on an EC2 instance and tried it then it returns error "SignatureDoesNotMatch - The request signature we calculated does not match the signature you provided. Check your key and signing method." But it works on the other server. The ec2 is on the same region as the s3 host. I'm guessing it has something to do with the host. I tried these host/url but it returns the same error. Anyone able to download s3 files from ec2 with

I am attempting to replicate the Python HMAC-SHA256 equivalent in Android (Java). The Python representation is shown bellow with the correct output: Python print (hmac.new(key = binascii.unhexlify("0123465789"),msg = binascii.unhexlify("ABCDEF"),digestmod=hashlib.sha256).hexdigest()).upper() Output 5B5EE08A20DDD645A31384E51AC581A4551E9BE5AC8BF7E690A5527F2B9372CB However, I am unable to get the same output in Java using the code below: Java Mac sha256_HMAC = Mac.getInstance("HmacSHA256"); SecretKeySpec secretKey = new SecretKeySpec("0123465789".getBytes("UTF-8"), "HmacSHA256"); sha256_HMAC.init

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm trying to convert an ASP/VBScript OAuth library to VBA. One of the challenges is this line of code: Get_Signature = b64_hmac_sha1(strSecret, strBaseSignature) This function, b64_hmac_sha1 is actually a function contained in a JavaScript library. It appears to me that calling a JavaScript function from VBA is fairly impractical. Because I know so little about encryption, it's not even clear to me what this b64_hmac_sha1 function does. Is HMAC SHA1 different from SHA1? I half suspect I might be able to find some VBA code online to do what

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm trying to convert an ASP/VBScript OAuth library to VBA. One of the challenges is this line of code: Get_Signature = b64_hmac_sha1(strSecret, strBaseSignature) This function, b64_hmac_sha1 is actually a function contained in a JavaScript library. It appears to me that calling a JavaScript function from VBA is fairly impractical. Because I know so little about encryption, it's not even clear to me what this b64_hmac_sha1 function does. Is HMAC SHA1 different from SHA1? I half suspect I might be able to find some VBA code online to do what

I am using the below code to create a hmac key and returning it as a string. KeyGenerator keyGen = null; try { keyGen = KeyGenerator.getInstance("HmacSHA256"); } catch (NoSuchAlgorithmException e) { e.printStackTrace(); } SecretKey key = keyGen.generateKey(); byte[] encoded = key.getEncoded(); String s=Base64.encodeToString(encoded, Base64.DEFAULT); Log.i("Hmac key before encrypt",s); try { KeyStore keystore = KeyStore.getInstance("AndroidKeyStore"); keystore.load(null, null); KeyStore.PrivateKeyEntry privateKeyEntry = (KeyStore.PrivateKeyEntry) keystore.getEntry("temp", null); RSAPublicKey

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: This question already has an answer here: CommonHMAC in Swift 10 answers I'm trying to encrypt data to send to the API. The API requires the data to be sent as hmac_sha512 encrypted hash. I've found various examples of how it possibly could have been done for sha1 and others (not sha512 ) and also in older versions of Swift. None of the examples that I tried work for swift 3.1 Any help in the right direction will be appreciated. Edit: In PHP, I successfully send it using: $sign = hash_hmac('sha512', $post_data, $this->secret); Edit 2: I did

I'm an encryption novice trying to pass some values back and forth between systems. I can encrypt the value, but can't seem to figure out how to decrypt on the other end. I've created a simple Windows Forms application using VB.NET. Trying to input a value and a key, encrypt and then decrypt to get the original value. Here's my code so far. Any help greatly appreciated. Thanks. Imports System Imports System.IO Imports System.Security.Cryptography Imports System.Text Public Class Form1 Private Sub btnEncode_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnEncode

Is there any function for creating Hmac256 string in android ? I am using php as my back end for my android application, in php we can create hmac256 string using the php function hash_hmac () [ ref ] is there any function like this in Android Please help me. Calculate the message digest with the hashing algorithm HMAC-SHA256 in the Android platform: private void generateHashWithHmac256(String message, String key) { try { final String hashingAlgorithm = "HmacSHA256"; //or "HmacSHA1", "HmacSHA512" byte[] bytes = hmac(hashingAlgorithm, key.getBytes(), message.getBytes()); final String

In the application I'm writing I need to do HKDF to derive two different keys from one password. Searching for examples on how to it in Java I found these two: https://github.com/WhisperSystems/libsignal-protocol-java/blob/master/java/src/main/java/org/whispersystems/libsignal/kdf/HKDF.java https://www.javatips.net/api/keywhiz-master/hkdf/src/main/java/keywhiz/hkdf/Hkdf.java In both cases HKDF is implemented on top of the HMAC provided by JCA. I haven't read those implementations in detail yet but I was wondering, is this not implemented anywhere in JCA or itself? Do I have to implement my own