IOS Keychain Storage

Simple translation, keychain can store passwords, certificates and so on, as to what benefits, oh da, their own Baidu go, summed up a bit is more secure, and take more convenient bar, see the app scene bar.

This code, divided into two paragraphs, a section for saving code

 1-(BOOL) SaveData: (NSString *) Str 2 {3 Osstatus status = NOERR; 4 nsmutabledictionary *query = [[Nsmutabledicti] Onary alloc] init]; 5 [Query SetObject: (ID) Ksecclassgenericpassword Forkey: (ID) ksecclass]; 6//Query one 7 [query setobject: (ID) ksecmatchlimitone Forkey: (ID) ksecmatchlimit]; 8 [Query setobject:@ "Password" Forkey: (ID) ksecattrservice]; 9 Cfmutabledictionaryref outdicref = nil;10 status = Secitemcopymatching ((cfdictionaryref) query, (CFTYPEREF *) &amp , Outdicref), if (Status==noerr) {NSLog (@ "###################### #query success"), [query re]         Moveobjectforkey: (ID) ksecmatchlimit];15 NSLog (@ "=============code%d", Secitemdelete ((cfdictionaryref) query)); 16 Nsmutabledictionary *DT = [[Nsmutabledictionary alloc] init];17 [DT setobject:@ "label" Forkey: (ID) ksecattr label];18 [dt setobject:@ "Password" Forkey: (ID) ksecattrservice];19 [dt Setobject:[str Datausingencoding:ns Utf8stringencodiNG] Forkey: (ID) ksecvaluedata];20 [dt setobject: (ID) Ksecclassgenericpassword Forkey: (ID) ksecclass];21 22 [DT setobject:@ "Item label" Forkey: (__bridge ID) ksecattrlabel];23 [dt setobject:@ "Item Descriptio N "Forkey: (__bridge ID) ksecattrdescription];25 [dt setobject:@" Account "Forkey: (__bridge ID) KSECATTRACC ount];27 [DT setobject:@ "Service" Forkey: (__bridge ID) ksecattrservice];29 [dt Setobj ect:@ "Your comment here." Forkey: (__bridge id) ksecattrcomment];31 status = Secitemadd ((cfdictionaryref) DT, NULL); 3 2 if (status==noerr) {NSLog (@ "###################### #save success");             yes;36}37 return yes;38}39 else40 if (status==errsecitemnotfound) 41 {42 NSLog (@ "#################### #not found"),//store44 nsmutabledictionary *dt = [nsmutabledict  Ionary Alloc] Init];45           [DT setobject:@ "label" Forkey: (ID) ksecattrlabel];46 [dt setobject:@ "Password" Forkey: (ID) ksecattrse             rvice];47 [DT setobject:[str datausingencoding:nsutf8stringencoding] Forkey: (ID) ksecvaluedata];48  [DT SetObject: (ID) Ksecclassgenericpassword Forkey: (ID) ksecclass];49 [dt setobject:@ "Item label" Forkey: (__bridge ID) ksecattrlabel];51 [dt setobject:@ "Item description" Forkey: (__bridge ID) kS             ecattrdescription];53 [dt setobject:@ "Account" Forkey: (__bridge ID) ksecattraccount];55 [DT setobject:@ "Service" Forkey: (__bridge ID) ksecattrservice];57 [dt Setobje ct:@ "Your comment here." Forkey: (__bridge id) ksecattrcomment];59 status = Secitemadd ((cfdictionaryref) DT, NULL                 ), if (Status==noerr) NSLog (@ "###################### #save Success"), 63 Return yes;64}65 if (outdicref) cfrelease (outdicref); return no;68}69 else70 {NSLog (@ "####################### #error query%d", status);}73 return no;74}

Code a little messy, you will be next, anxious to go to bed ~

Read the code as follows:

 1-(NSString *) GetData 2 {3 Osstatus status = NOERR; 4 nsmutabledictionary *query = [[Nsmutabledictionary alloc ] init]; 5 [Query SetObject: (ID) Ksecclassgenericpassword Forkey: (ID) ksecclass]; 6//Query one 7 [query setobject: (ID) ksecmatchlimitone Forkey: (ID) ksecmatchlimit]; 8 [Query setobject:@ "Service" Forkey: (ID) ksecattrservice]; 9///If you want to get the relevant properties, you must set it here.  In this place, I've been doing this for half a day. [Query setobject: (ID) kcfbooleantrue Forkey: (ID) ksecreturnattributes];11 cfdictionaryref attributes =     NIL;12////Take attribute to the status = Secitemcopymatching ((__bridge cfdictionaryref) query, (CFTYPEREF *) &attributes); 14 if (status==noerr) {NSLog (@ "--------%@", attributes);}18 [Query Removeobjectforkey: (ID) KSECR eturnattributes];19 cfdataref outdata;20////value, where the actual password is stored, here to set the [query SetObject: (ID) kcfbooleantrue Forkey: (i   D) ksecreturndata];22 status = Secitemcopymatching ((cfdictionaryref) query, (CFTYPEREF *) &outdata); 23//Parse back 24  NSString *str = [[NSString alloc] Initwithdata: (__bridge nsdata *) Outdata encoding:nsutf8stringencoding];25 return s TR;26}

Under test:

　　

Take to property:

　　

Take password

　　

IOS Keychain Storage