sha1

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

If this were possible to do prior to posting a form, it may save me having to upload the file to my server... To do that you would have to load the file's binary information into JavaScript. Which is not possible. But here's an implementation of SHA1 in JavaScript. bobince Actually you can read the contents of a client-side file now, as long as it's chosen in a file upload field and you are using Firefox. See the input.files array. You can then indeed hash it, although it might be rather slow. See How would I get a Hash value of a users file with Javascript or Flash? for an example and a

In my Objective C code, I have a consumer key and secret hardcoded in my code to be used in SHA-1 encryption. What I would like to know is whether I could avoid hardcoding to improve security. I have found the following so far, Finding 1 https://www.owasp.org/index.php/Technical_Risks_of_Reverse_Engineering_and_Unauthorized_Code_Modification#Cryptographic_Key_Replacement Steps explained are as follows, Damage static keys that are declared in source code. Such keys should be damaged while on disk to prevent an adversary from analyzing and intercepting the original key; Next, the application

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 am trying to make my Google Translate API work but currently I can't find a way. This is how I have set things in Google Developer Console : I have set my SHA1 fingerprint with the debug certificates. And package name -"bg.webmap.wordy"(which is the actual name). When I try to make a call an "ipRefererBlocked" error is returned in JSON. But when I remove the fingerprint and package name, It works perfectly, but then everybody can use this key, so it is very insecure. So my problem is with authentication. Will my app automatically send this

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

I need generate a single hash over some data in a table CREATE TABLE Table1 ( F1 INT UNSIGNED NOT NULL AUTO_INCREMENT, F2 INT default NULL, F3 Varchar(50) default NULL, .. FN INT default NULL, PRIMARY KEY (F1) ); i.e. F1, F3,FN where F2=10 SELECT md5(CONCAT_WS('#',F1,F3,FN)) FROM Tabe1 WHERE F2=10 Gives a Hash for each row in the table. QUESTIONS 1) How do get a single hash over the whole table? 2) What is the fasts hashing algorithm to use MD5, SHA1, SHA or any other? EDIT: Mysql 4.1 is been used - and it does NOT have Trigger Support 1) SELECT MD5( GROUP_CONCAT( CONCAT_WS('#',F1,F3,FN)

Is there any input that SHA-1 will compute to a hex value of fourty-zeros, i.e. "0000000000000000000000000000000000000000"? I don't think so. There is no easy way to show why it's not possible. If there was, then this would itself be the basis of an algorithm to find collisions. Longer analysis: The preprocessing makes sure that there is always at least one 1 bit in the input. The loop over w[i] will leave the original stream alone, so there is at least one 1 bit in the input (words 0 to 15). Even with clever design of the bit patterns, at least some of the values from 0 to 15 must be non-zero

I'm trying to verify the signature of a file. I followed these instruction to generate a certificate: // generate a private key with size of 2048 bits openssl genrsa -out private_key.pem 2048 // derive a public key from the above private key openssl rsa -in private_key.pem -out public_key.pem -outform PEM -pubout // iOS will not import PEM encoded data so it needs to be converted to DER encoded data openssl rsa -pubin -inform PEM -outform DER -in public_key.pem -out public_key.der // generate a self-signed certificate for testing openssl req -new -x509 -key private_key.pem -out test_cert.pem

I am running into an issue when managing openssl certificates from Java Framework. openssl x509 -subject_hash ... output differs to the one that Java framework returns when calling X509_NAME_hash() , see below. The reason for this is that openssl changed the way it calculates the SHA1. Now, instead of basing the hash in the ASN.1 DER representation of the subject, as it does for MD5, it first calculates the CANONICAL representation and then based on that, it calculates the ASN.1 DER, and then uses that as the input for the SHA1 algorithm. NativeCrypto.java : // --- X509_NAME ------------------