hmac

time模块 打印三种不同格式的时间 time.time() # 打印当前时间(秒) time.sleep() # 睡眠 datetime模块 修改时间 datetime.datetime.now() + datetime.timedelta(3) hashlib模块 加密 m = hashlib.md5() m.update(b'hello') m.update(b'hello') print(m.hexdigest()) m = hashlib.md5() m.update(b'hellohello') print(m.hexdigest()) 结果永远都是相同长度的字符串 叠加性 hmac模块 加密, 加盐处理 m = hmac.new(b'123') m.update(b'hellow') print(m.hexdigest()) 来源： https://www.cnblogs.com/shiqizz/p/11515046.html

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 current work flow. Now, I want to make the availability of website resources (i.e. functions from

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(); byte[] keyByte = encoding.GetBytes(key); HMACMD5 hmacmd5 = new HMACMD5(keyByte); byte[] messageBytes = encoding.GetBytes(message); byte[] hashmessage = hmacmd5.ComputeHash(messageBytes); string HMACMd5Value = ByteToString(hashmessage); return HMACMd5Value; } private static string ByteToString(byte[] buff) { string sbinary = ""; for (int i = 0; i < buff.Length; i++) { sbinary += buff[i]

I need to generate HMAC-SHA256 signatures for the Amazon web services API. The old DCPcrypt library has sha256 routines but does not do HMAC signing. Anyone know of a free hashing library I could use? After a little more searching I found OpenStreamSec - which looks like it was abandoned a few years ago but still compiles in D2007. http://sourceforge.net/projects/openstrsecii/ Generating a HMAC-256 for Amazon is really simple: StrToMime64(HMACString(haSHA256, SecretKey, 32, DataToHash)); shunty My favourite answer - I would use the OpenSSL libraries, the HMAC function. I've successfully used

I have this php code which generate a HMAC (and not a simple message digest): <?php $key = "0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF"; $binkey = pack("H*", $key); echo strtoupper(hash_hmac('sha512', "ABC", $binkey)); ?> And with ABC input its output is: 100A6A016A4B21AE120851D51C93B293D95B7D8A44B16ACBEFC2D1C9DF02B6F54FA3C2D6802E52FED5DF8652DDD244788A204682D2D1CE861FDA4E67F2792643 And I need to clone it in java. So here is my current java clone : private String generateHMAC( String datas ) { // final Charset

im trying to get a call to amazon web service and im stuck on getting the signature, looked at this but i still have a question on it. using this example what is the NSData *keyData; NSData *clearTextData ? what do i need to pass for these two values? /* inputs: NSData *keyData; NSData *clearTextData */ uint8_t digest[CC_SHA1_DIGEST_LENGTH] = {0}; CCHmacContext hmacContext; CCHmacInit(&hmacContext, kCCHmacAlgSHA1, keyData.bytes, keyData.length); CCHmacUpdate(&hmacContext, clearTextData.bytes, clearTextData.length); CCHmacFinal(&hmacContext, digest); NSData *out = [NSData dataWithBytes:digest

In a RESTful API that uses S3-style authentication, the API client signs the request with his secret key using HMAC-SHA1, so the secret key is never transmitted over the wire. The server then authenticates the client by using that client's secret key to repeat the signature process itself and compare the result to the signature transmitted by the client. This is all nice and good but it means the the server requires access to the plaintext of the client's shared secret. That flies in the face of all the advice out there against storing user passwords in the clear inside your database. Storing