ios - Crash (EXC_BAD_ACCESS) when using CCCrypt -

-

below code encrypt string,

nsstring *token = @"us=foo;pw=bar;pwalg=false;"; nsstring *key = @"testtest";  const void *vplaintext; size_t plaintextbuffersize;  plaintextbuffersize = [token length]; vplaintext = (const void *) [token utf8string];  cccryptorstatus ccstatus; uint8_t *bufferptr = null; size_t bufferptrsize = 0; size_t *movedbytes;  bufferptrsize = (plaintextbuffersize + kccblocksize3des) & ~(kccblocksize3des - 1); bufferptr = malloc( bufferptrsize * sizeof(uint8_t)); memset((void *)bufferptr, 0x0, bufferptrsize); // memset((void *) iv, 0x0, (size_t) sizeof(iv));   nsstring *initvec = @"init vec"; const void *vkey = (const void *) [key utf8string]; const void *vinitvec = (const void *) [initvec utf8string];  ccstatus = cccrypt(kccencrypt,                    kccalgorithmdes,                    kccoptionecbmode,                    vkey, //"123456789012345678901234", //key                    kcckeysizedes,                    null,// vinitvec, //"init vec", //iv,                    vplaintext, //"your name", //plaintext,                    plaintextbuffersize,                    (void *)bufferptr,                    bufferptrsize,                    movedbytes);  nsstring *result; nsdata *mydata = [nsdata datawithbytes:(const void *)bufferptr length:(nsuinteger)movedbytes]; result = [mydata base64encoding];   nslog( @"original string dddd: %@", result );

it prompt me exc_bad_access on line ccstatus = cccrypt(kccencrypt,

can advice?

it's last parameter cccrypt. it's trying output value (so know size of data written) , you're giving pointer. need give address of size_t variable.

try this:

size_t movedbytes; ccstatus = cccrypt(kccencrypt,                 kccalgorithmdes,                 kccoptionecbmode,                 vkey, //"123456789012345678901234", //key                 kcckeysizedes,                 null,// vinitvec, //"init vec", //iv,                 vplaintext, //"your name", //plaintext,                 plaintextbuffersize,                 (void *)bufferptr,                 bufferptrsize,                 &movedbytes);

Comments

Post a Comment

Popular posts from this blog

c# - SVN Error : "svnadmin: E205000: Too many arguments" -

-
i trying reposotries using c# code process svncommand = null; var psi = new processstartinfo("svnadmin"); psi.redirectstandardoutput = true; psi.redirectstandarderror = true; psi.useshellexecute = false; psi.arguments= @"dump c:\repositories\myrepo > c:\temp\myrepodumpfile.dump"; using (svncommand = process.start(psi)) { var myoutput = svncommand.standardoutput; var myerror = svncommand.standarderror; debug.write("output :" + environment.newline + environment.newline + myoutput.readtoend() + environment.newline + "error :" + environment.newline + environment.newline + myerror.readtoend()); svncommand.close(); } when use dump command commandline svnadmin dump c:\repositories\myrepo > c:\temp\myrepodumpfile.dump it works fine when try ...
Read more

c# - Copy ObservableCollection to another ObservableCollection -

-
how copy observablecollection item observablecollection without reference of first collection? here observablecollection item value changes affecting both collections. code private observablecollection<ratemodel> _allmetalrate = new observablecollection<ratemodel>(); private observablecollection<ratemodel> _metalrateondate = new observablecollection<ratemodel>(); public observablecollection<ratemodel> allmetalrate { { return this._allmetalrate; } set { this._allmetalrate = value; notifypropertychanged("metalrate"); } } public observablecollection<ratemodel> metalrateondate { { return this._metalrateondate; } set { this._metalrateondate = value; notifypropertychanged("metalrateondate"); } } foreach (var item in metalrateondate) allmetalrate.add(item); what causing , how can solve it? you need clone object referenced item before it's a...
Read more

All overlapping substrings matching a java regex -

-
is there api method returns (possibly overlapping) substrings match regular expression? for example, have text string: string t = 04/31 412-555-1235; , , have pattern: pattern p = new pattern("\\d\\d+"); matches strings of 2 or more characters. the matches are: 04, 31, 412, 555, 1235. how overlapping matches? i want code return: 04, 31, 41, 412, 12, 55, 555, 55, 12, 123, 1235, 23, 235, 35. theoretically should possible -- there obvious o(n^2) algorithm enumerates , checks substrings against pattern. edit rather enumerating substrings, safer use region(int start, int end) method in matcher . checking pattern against separate, extracted substring might change result of match (e.g. if there non-capturing group or word boundary check @ start/end of pattern). edit 2 actually, it's unclear whether region() expect zero-width matches. specification vague, , experiments yield disappointing results. for example: string line = "xx90xx"; strin...
Read more