hmac

HMAC-SHA1: How to do it properly in Java?

匆匆过客 提交于 2019-11-28 03:39:20
I'm hashing some values using HMAC-SHA1, using the following code in Java: public static String hmacSha1(String value, String key) { try { // Get an hmac_sha1 key from the raw key bytes byte[] keyBytes = key.getBytes(); SecretKeySpec signingKey = new SecretKeySpec(keyBytes, "HmacSHA1"); // Get an hmac_sha1 Mac instance and initialize with the signing key Mac mac = Mac.getInstance("HmacSHA1"); mac.init(signingKey); // Compute the hmac on input data bytes byte[] rawHmac = mac.doFinal(value.getBytes()); // Convert raw bytes to Hex byte[] hexBytes = new Hex().encode(rawHmac); // Covert array of

Android : How to create HMAC MD5 string? [closed]

廉价感情. 提交于 2019-11-28 01:10:49
问题 It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center. Closed 7 years ago . I am trying to create an android MD5 hash string to equal the C# code bellow: private string CalculateHMACMd5(string message, string key) { System.Text.ASCIIEncoding encoding = new System.Text.ASCIIEncoding();

How should I implement 'Token Based Authentication' to a set of web APIs in a secure way using PHP and MySQL (without using OAuth)?

让人想犯罪 __ 提交于 2019-11-28 01:06:34
问题 I've developed few web APIs in PHP using Slim framework which are used by mobile apps(iOS and Android) to process their requests and get the required data. Eventually, in every API I'm sending the requests received from mobile app to the respective function present in a code base of my website. Then the respective function accepts the request and request parameters, process the request and returns the required data. Then the API returns the data to the mobile app in JSON format. This is the

How do I sign a POST request using HMAC-SHA512 and the Python requests library?

人走茶凉 提交于 2019-11-27 23:48:39
I'm trying to use Python to access the trading API at poloniex.com, a cryptocurrency exchange. To do this I must follow this prescription: All calls to the trading API are sent via HTTP POST to https://poloniex.com/tradingApi and must contain the following headers: Key - Your API key. Sign - The query's POST data signed by your key's "secret" according to the HMAC-SHA512 method. Additionally, all queries must include a "nonce" POST parameter. The nonce parameter is an integer which must always be greater than the previous nonce used. Here is what I have so far. My current issue is that I do

How to get digest representation of CryptoJS.HmacSHA256 in JS

无人久伴 提交于 2019-11-27 23:08:23
I have to generate string representation of CryptoJS.HmacSHA256 in digest (bytes representation). I need it because i have to duplicate python code which generate such digest in javascript: print hmac.new("secret", "test", hashlib.sha256).digest() ')�kb��>�y+������:�o��H� ' The goal is to duplicate behaviour of code above in javascript. Could you please suggest me how to do this? If you need raw bytes then CryptoJS does not seem to supply code for it. It is mentioned that this is because of lack of cross browser compatibility for Uint8Array and friends. However, after searching, I did find

How to generate HMAC-SHA1 in C#?

扶醉桌前 提交于 2019-11-27 19:49:02
问题 I am trying to make use of a REST API using C#. The API creator has provided sample libraries in PHP, Ruby and Java. I am getting hung up on one part of it where I need to generate an HMAC. Here's how it is done in the sample libraries they have provided. PHP hash_hmac('sha1', $signatureString, $secretKey, false); Ruby digest = OpenSSL::Digest::Digest.new('sha1') return OpenSSL::HMAC.hexdigest(digest, secretKey, signatureString) Java SecretKeySpec signingKey = new SecretKeySpec(secretKey

hmac模块和hashlib模块

家住魔仙堡 提交于 2019-11-27 15:16:34
hmac模块和hashlib模块 一、hash是什么 ​ hash是一种算法(Python3.版本里使用hashlib模块代替了md5模块和sha模块,主要提供 SHA1、SHA224、SHA256、SHA384、SHA512、MD5 算法),该算法接受传入的内容,经过运算得到一串hash值。 hash值的特点: 只要传入的内容一样,得到的hash值一样,可用于非明文密码传输时密码校验 不能由hash值返解成内容,即可以保证非明文密码的安全性 只要使用的hash算法不变,无论校验的内容有多大,得到的hash值长度是固定的,可以用于对文本的哈希处理 hash算法其实可以看成如下图所示的一座工厂,工厂接收你送来的原材料,经过加工返回的产品就是hash值 import hashlib # 作用:密码加密,无论你丢进什么字符串,他都会返回一串固定长度的字符串 m = hashlib.md m = update m1 = hashlib.md5() # 固定写法 m1.update(b'123456') print("m1:", m1.hexdigest()) m2 = hashlib.md5() m2.update(b'123') m2.update(b'456') print("m2: ", m2.hexdigest()) 结果(结果都是一样的):

c# and java - difference between hmacsha256 hash

早过忘川 提交于 2019-11-27 15:06:28
问题 I have the following code in Java: byte[] secretKey = secretAccessKey.getBytes("UTF-8"); SecretKeySpec signingKey = new SecretKeySpec(secretKey, "HmacSHA256"); Mac mac = Mac.getInstance("HmacSHA256"); mac.init(signingKey); byte[] bytes = data.getBytes("UTF-8"); byte[] rawHmac = mac.doFinal(bytes); String result = javax.xml.bind.DatatypeConverter.printBase64Binary(rawHmac); and the following code in C#: UTF8Encoding enc = new UTF8Encoding(); byte[] secretKey = enc.GetBytes(secretAccessKey);

hashlib模块和hmac模块

有些话、适合烂在心里 提交于 2019-11-27 13:54:55
hashlib模块和hmac模块 hashlib模块 一、导入方式 import hashlib 二、作用 无论你丢什么字符串,他都会返回一串 固定长度的字符串 三、模块功能 3.1 经常使用 import hashlib m = hashlib.md5() #生成一个对象 m.update(b'123') m.update(b'456') print(m.hexdigest()) -------------------------------------------------------- e10adc3949ba59abbe56e057f20f883e import hashlib m = hashlib.md5() #生成一个对象 m.update(b'123456') print(m.hexdigest()) ---------------------------------------------------------- e10adc3949ba59abbe56e057f20f883e #两个字符串都一样 注意: 变成固定的字符串 相同的字符串哈希后结果一样 叠加性 hmac模块 一、导入方式 import hmac 二、作用 对密码加密,可以加盐 三、模块功能 3.1 经常使用 # 1 import hmac m = hmac.new(b'a') #加盐 m

069 hmac 模块

谁说胖子不能爱 提交于 2019-11-27 13:51:26
hmac模块 hmac模块:对密码加密,可以加盐 为了防止密码被撞库,我们可以使用python中的另一个hmac 模块,它内部对我们创建key和内容做过某种处理后再加密。 如果要保证hmac模块最终结果一致,必须保证: hmac.new括号内指定的初始key一样 无论update多少次,校验的内容累加到一起是一样的内容 import hmac # 注意hmac模块只接受二进制数据的加密 h1 = hmac.new(b'hash') h1.update(b'hello') h1.update(b'world') print(h1.hexdigest()) # 905f549c5722b5850d602862c34a763e h2 = hmac.new(b'hash') h2.update(b'helloworld') print(h2.hexdigest()) # 905f549c5722b5850d602862c34a763e h3 = hmac.new(b'hashhelloworld') print(h3.hexdigest()) # a7e524ade8ac5f7f33f3a39a8f63fd25 来源: https://www.cnblogs.com/xichenHome/p/11366357.html