IOS Keychain fingerprint Identifies the difference between get and post requests
Last Update:2015-07-01
Source: Internet
Author: User
<span id="Label3"></p><p class="p1"><p class="p1"><strong><span class="s1">01- <span class="s2">Key String</span></span></strong></p></p><p class="p2"><p class="p2"><span class="s3">1. The <span class="s1">system-provided keychain function can save the password locally <span class="s3">, the <span class="s1">system uses <span class="s3">AES <span class="s1">to encrypt the password <span class="s3">A. <span class="s1">view <span class="s3"> <span class="s1">saved passwords <span class="s3"></span> in Safari </span></span></span></span></span></span></span></span></span></span></p></p><p class="p2"><p class="p2"><span class="s3">2. <span class="s1">use a third-party framework <span class="s3">Sskeychain <span class="s1">to save the password to the keychain and get the password in the keychain <span class="s3">A. <span class="s1">get all users <span class="s3"></span> in keychain</span> </span> </span> </span></span></span></p></p><p class="p3"><p class="p3"><span class="s1">[sskeychain allaccounts]<br>B. <span class="s4">save the password to the Keychain <span class="s1">service <span class="s4">can be used <span class="s1">Boundleid</span> </span> </span> </span></span></p></p><p class="p3"><p class="p3"><span class="s1">[sskeychain SetPassword:self.pwdView.text Forservice:kpwdchainkey account:self.nameView.text]; C. <span class="s4">get the password <span class="s1"></span> from the keychain</span></span></p></p><p class="p3"><p class="p3"><span class="s1">Self.pwdView.text = [sskeychain Passwordforservice:kpwdchainkey account:self.nameView.text];</span></p></p><p class="p4"><p class="p4"><strong><span class="s5">02- <span class="s1">fingerprint identification <span class="s6"></span> </span></span></strong></p></p><p class="p3"><p class="p3"><span class="s1">1. <span class="s4">fingerprint identification<span class="s1"><br>A. iphone5s <span class="s4">introduced fingerprint identification <span class="s1">, TouchID b. iOS8 <span class="s4">open the fingerprint Identification <span class="s1">SDK</span> </span> </span> </span></span></span></span></p></p><p class="p2"><p class="p2"><span class="s3">2. <span class="s1">use <span class="s3"></span> of fingerprint identification</span></span></p></p> <ol class="ol1"> <ol class="ol1"> <li class="li5"><span class="s1"><span class="s4">Import Header File <span class="s1"><br>#import <LocalAuthentication/LocalAuthentication.h><br></span></span></span></li> <li class="li6"><span class="s1"><span class="s4">Determine if the device supports fingerprint identification <span class="s1"><br>Lacontext *ctx = [[lacontext alloc] init];<br></span></span></span></li> </ol> </ol><p class="p3"><p class="p3"><span class="s1"><span class="s4">determine if fingerprint recognition is supported<span class="s1"><br>If ([ctx canevaluatepolicy:lapolicydeviceownerauthenticationwithbiometrics error:null]) {</span></span></span></p></p><p class="p3"><p class="p3"><span class="s1">NSLog (@ " <span class="s4">support <span class="s1">");</span> </span></span></p></p><p class="p2"><p class="p2"><span class="s3"><span class="s1">fingerprint identification <span class="s3"></span> </span></span></p></p><p class="p3"><p class="p3"><span class="s1">[ctx evaluatepolicy:lapolicydeviceownerauthenticationwithbiometrics localizedreason:@ " <span class="s4">fingerprint verification <span class="s1">" Reply: ^ (BOOL success, nserror *error) {</span> </span></span></p></p><p class="p3"><p class="p3"><span class="s1">NSLog (@ "= =%d===%@", success,error); If (success) {</span></p></p><p class="p2"><p class="p2"><span class="s3"><span class="s1">after the fingerprint verification <span class="s3">is successful, <span class="s1">request the server to pay or log in <span class="s3">}</span> </span> </span> </span></span></p></p><p class="p3"><p class="p3"><span class="s1">}]; }else{</span></p></p><p class="p3"><p class="p3"><span class="s1">NSLog (@ " <span class="s4">not supported <span class="s1">");}</span> </span></span></p></p><p class="p2"><p class="p2"><span class="s3">3. <span class="s1">only <span class="s3">iOS8 <span class="s1">after the fingerprint identification of the <span class="s3">api// <span class="s1">determine whether the device is a <span class="s3">iOS8 <span class="s1">system <span class="s3"></span> </span> </span> </span> </span> </span> </span> </span></span></p></p><p class="p3"><p class="p3"><span class="s1">If ([uidevice Currentdevice].systemversion.floatvalue < 8) {</span></p></p><p class="p3"><p class="p3"><span class="s1">Return }</span></p></p><p class="p2"><p class="p2"><span class="s3">4. <span class="s1">Errors <span class="s3"></span> in fingerprint identification</span></span></p></p><p class="p2"><p class="p2"><span class="s3"><span class="s1">fingerprint not recognized <span class="s3"></span> </span></span></p></p><p class="p3"><p class="p3"><span class="s1">laerrorauthenticationfailed = klaerrorauthenticationfailed,// <span class="s4">user clicked the Cancel button <span class="s1"></span> </span></span></p></p><p class="p3"><p class="p3"><span class="s1">laerrorusercancel// <span class="s4">User clicked the Enter Password button <span class="s1"></span> </span></span></p></p><p class="p3"><p class="p3"><span class="s1">laerroruserfallback// <span class="s4">System canceled <span class="s1">, <span class="s4">other <span class="s1"></span> apps activated</span> </span> </span></span></p></p><p class="p3"><p class="p3"><span class="s1">= klaerrorusercancel, = klaerroruserfallback,</span></p></p><p class="p3"><p class="p3"><span class="s1">laerrorsystemcancel// <span class="s4">authentication does not start <span class="s1">, <span class="s4">no password <span class="s1"></span> is set on the device</span> </span> </span></span></p></p><p class="p3"><p class="p3"><span class="s1">= klaerrorsystemcancel,</span></p></p><p class="p3"><p class="p3"><span class="s1">Laerrorpasscodenotset = klaerrorpasscodenotset,// <span class="s4">authentication cannot start <span class="s1">, <span class="s4">no <span class="s1">Touch ID</span> on device</span> </span> </span></span></p></p><p class="p3"><p class="p3"><span class="s1">Laerrortouchidnotavailable = klaerrortouchidnotavailable,// <span class="s4">verification failed <span class="s1">to start, <span class="s4">no fingerprint <span class="s1"></span> entered</span> </span> </span></span></p></p><p class="p3"><p class="p3"><span class="s1">laerrortouchidnotenrolled = klaerrortouchidnotenrolled,</span></p></p><p class="p1"><p class="p1"><strong><span class="s1">The. GET <span class="s2"> <span class="s1">vs. <span class="s2">POST <span class="s1"></span> comparison</span> </span> </span></span></strong></p></p><p class="p2"><p class="p2"><span class="s5">A. GET<span class="s6"><br><span class="s3">I. Get <span class="s1">is generally to get the data <span class="s3"></span> on the server</span></span></span></span></p></p><p class="p2"><p class="p2"><span class="s3">The GET <span class="s1">method is <span class="s3"> <span class="s1">to pass the data through <span class="s3">the url, <span class="s1">high efficiency <span class="s3">iii. the <span class="s1">requested data is <span class="s3"> <span class="s1"> <span class="s3"> <span class="s1">not secure <span class="s3"></span> </span> </span> on</span> the URL</span> </span> </span> </span> </span> </span> </span> </span></span></p></p><p class="p3"><p class="p3"><span class="s1">1) login.php?username=zs&pwd=123456</span></p></p><p class="p2"><p class="p2"><span class="s3">2) <span class="s1">If there is a Chinese and a special symbol <span class="s3">(? = &, etc.) in the parameters, <span class="s1"> <span class="s3"> <span class="s1"> <span class="s3">URL <span class="s1">encoding IV should be performed <span class="s3">. <span class="s1">The result of a GET request can be <span class="s3"></span> cached by the browser</span> </span> </span> </span> </span> </span> </span> </span> </span></span></p></p><p class="p2"><p class="p2"><span class="s5">B. POST<span class="s6"><br><span class="s3">I. POST <span class="s1">typically submits data <span class="s3">to <span class="s1">the server and gets the results <span class="s3"></span> returned by the server</span> </span> </span></span></span></span></p></p><p class="p2"><p class="p2"><span class="s3">Ii. POST <span class="s1">is the transfer of data through the request body <span class="s3">, <span class="s1">low efficiency <span class="s3">Iii. <span class="s1">the requested data is not visible to the user <span class="s3">and is <span class="s1">relatively secure <span class="s3"></span> </span> </span> </span> </span> </span> </span> </span></span></p></p><p class="p2"><p class="p2"><span class="s3">Iv. POST <span class="s1">requests cannot be <span class="s3"></span> cached by the browser</span></span></p></p><p><p>IOS Keychain fingerprint Identifies the difference between get and post requests</p></p></span>
