nonce

user name or password in To those that is http-compatible.One advantage of the basic access authentication is any Web browsers support it. Rarely it is used on publicly accessible Internet Web sites and may sometimes being used by small, private systems. A later mechanism, Digest access authentication, was developed in order to replace the basic access authentication and ENA BLE credentials to is passed in a relatively secure manner over an otherwise unsecure channel.Http authentication ..... D

follows: Unauthenticated client requests a restricted webpage The server returns an HTTP 401 response. This response contains a nonce value (a random Character Sequence). The web server ensures its uniqueness before sending the nonce. The client uses this nonce, password, user name, and other values to create a hash. Hashed strings and plain text us

, or encrypt the parameters of the signature, this interface is generally less, but provides some very regular data display. The following illustration shows the description and the approximate application scenario of these types of access methods. 4. The implementation of WEB API using secure signature First of all, we register for users, we need to be recognized by the terminal launch, that is, they need to carry out security signatures, the background to confirm the validity of th

such as connection information, timestamp, and nonce in other blocks in the block chain, as follows: Block identifier The block has two identifiers, one is the hash value of the block header and the other is the block height. The hash value of the chunk header is the number obtained by the SHA256 algorithm for two hash calculations of the block head. A chunk hash value can uniquely and unambiguously identify a block, and any node can obtain the chun

( "crypto/sha256" "fmt" "math/big")func main() { data1 := []byte("I like donuts") data2 := []byte("I like donutsca07ca") targetBits := 24 target := big.NewInt(1) target.Lsh(target, uint(256-targetBits)) fmt.Printf("%x\n", sha256.Sum256(data1)) fmt.Printf("%64x\n", target) fmt.Printf("%x\n", sha256.Sum256(data2))} Output: You can think of a target as an upper bound of a range: if a number (from a hash is converted) is smaller than the upper bound, then this is v

I. Concepts and definitions 1, what is replay attack?When we design the interface, we are most concerned that an interface is intercepted by an ulterior user and used for replay attacks. What is replay attack? is to send the request to be sent unaltered, once, two times ... n times.2. Consequences of replay attacksThe general request is submitted to the background execution, after "page verification" is submitted to the "background logic", submitted to the "background logic" process, the request

', ' VSNF ': ' 1 ', ' vsnval ': ', ' su ': ', ' service ': ' Miniblog ', ' Servertime ': ', ' nonce ': ', ' pwencode ': ' rsa2 ', ' sp ': ', ' Encoding ': ' UTF-8 ', ' prelt ': ' The ' is ', ' rsakv ': ', ' url ': ' http://weibo.com/ajaxlogin.php?framelogin=1callback= Parent.sinaSSOController.feedBackUrlCallBack ', ' returntype ': ' META '} def get_servertime (self,username): url = ' htt P://login.sina.com.cn/sso/prelogin.php?entry=ssocallback=sinass

secret = y2 ^ x1% p At this point, you can generate the corresponding decryption key for this session: Decode key = hmac-sha256 (Shared-secret, hmac-sha256 (responder Nonce,initiator nonce)) Encode key = hmac-sha256 (Shared-secret, hmac-sha256 (initiator Nonce,responder nonce)) These decryption keys use only the low 1

alternative because basic authentication is too dangerous. However, it is only a substitute for basic authentication, because it is not very safe and has some weaknesses.(1) digest authentication can only be used as a permission authentication mechanism, rather than a confidentiality measure, because the message body is not encrypted. Qop uses "auth-int" to ensure that the message body is not modified and cannot be peeked.(2) Replay attack: attackers may intercept abstract information and then

XML data becomes: xx xx Additionally, in "Safe Mode", two fields are added to the Http Post Request line: Encrypt_type and msg_signuature for message type determination and cryptographic message content validation: POST/?signature=891789ec400309a6be74ac278030e472f90782a5xtamp=1419214101nonce=788148964encrypt_type= aesmsg_signature=87d7b127fab3771b452bc6a592f530cd8edba950 http/1.1\r\n which Encrypt_type = "AES", which indicates that the message is

, under Chrome will not pop up the authentication dialog box, should be replaced by "," or " , "Www-authenticate:digest realm= "Restricted area", qop= "Auth,auth-int", nonce= "58e8e52922398", opaque= " Cdce8a5c95a1427d74df7acbf41c9ce0 ", algorithm=" MD5 " www-authenticate: Authentication Header sent by the server Qop: Quality assurance, the list of authentication algorithms that are used in the summary challenge to inform the client servi

An alternative method of Basic authentication proposed by Certified Digest authentication ←http1.1 Server-side to nonce for questioning, the client to the user name, password, nonce,http method, the request URI, such as the basis of information generated by the response information to authenticate the way. ※ Clear Text delivery without a password Summary Authentication steps: 1. Clients access a resource t

does not require signature authentication), using the GET call Method [HttpGet] public IHttpActionResult GetToken (string signKey) {if (string. isNullOrEmpty (signKey) return Json 2. Client call method, GET or POST (1) GET: must be added to the Request Header: timespan (timestamp), nonce (random number), signKey (key), signature (signature parameter) Public static T Get (2) POST is not written here. Similarly, you need to set header request paramet

[Original] Summary of ASP. net webapi access to the public platform, Token verification failure solution, webapitoken First, let me say: shit! This problem is not difficult, but there is too little information about ASP. net webapi on the Internet. PHP and so on. I was inspired by reading a blog of a great god and made a little research. Let's take a look! 1. The access method of the public platform is composed of four parameters (signature, timestamp, nonc