cryptography - brainpool320r1 Elliptic Curve not supported in Java Card? -

-

i working on java card 3.0.1 applet on use ecc. card supports ecc gf(p) 320bits, tried use brainpool320r1 elliptic curve (parameters). problem cryptoexception don't understand... same kind of problem had few time ago: restricted elliptic curves in java card solution given doesn't match case (the curve defined 320bits prime).

i post corresponding code :

byte[] p = new byte[] { (byte) 0xd3, (byte) 0x5e, (byte) 0x47, (byte) 0x20,         (byte) 0x36, (byte) 0xbc, (byte) 0x4f, (byte) 0xb7,         (byte) 0xe1, (byte) 0x3c, (byte) 0x78, (byte) 0x5e,         (byte) 0xd2, (byte) 0x01, (byte) 0xe0, (byte) 0x65,         (byte) 0xf9, (byte) 0x8f, (byte) 0xcf, (byte) 0xa6,         (byte) 0xf6, (byte) 0xf4, (byte) 0x0d, (byte) 0xef,         (byte) 0x4f, (byte) 0x92, (byte) 0xb9, (byte) 0xec,         (byte) 0x78, (byte) 0x93, (byte) 0xec, (byte) 0x28,         (byte) 0xfc, (byte) 0xd4, (byte) 0x12, (byte) 0xb1,         (byte) 0xf1, (byte) 0xb3, (byte) 0x2e, (byte) 0x27 };  byte[] = new byte[] { (byte) 0x3e, (byte) 0xe3, (byte) 0x0b, (byte) 0x56,     (byte) 0x8f, (byte) 0xba, (byte) 0xb0, (byte) 0xf8,     (byte) 0x83, (byte) 0xcc, (byte) 0xeb, (byte) 0xd4,     (byte) 0x6d, (byte) 0x3f, (byte) 0x3b, (byte) 0xb8,     (byte) 0xa2, (byte) 0xa7, (byte) 0x35, (byte) 0x13,     (byte) 0xf5, (byte) 0xeb, (byte) 0x79, (byte) 0xda,     (byte) 0x66, (byte) 0x19, (byte) 0x0e, (byte) 0xb0,     (byte) 0x85, (byte) 0xff, (byte) 0xa9, (byte) 0xf4,     (byte) 0x92, (byte) 0xf3, (byte) 0x75, (byte) 0xa9,     (byte) 0x7d, (byte) 0x86, (byte) 0x0e, (byte) 0xb4 };  byte[] b = new byte[] { (byte) 0x52, (byte) 0x08, (byte) 0x83, (byte) 0x94,     (byte) 0x9d, (byte) 0xfd, (byte) 0xbc, (byte) 0x42,     (byte) 0xd3, (byte) 0xad, (byte) 0x19, (byte) 0x86,     (byte) 0x40, (byte) 0x68, (byte) 0x8a, (byte) 0x6f,     (byte) 0xe1, (byte) 0x3f, (byte) 0x41, (byte) 0x34,     (byte) 0x95, (byte) 0x54, (byte) 0xb4, (byte) 0x9a,     (byte) 0xcc, (byte) 0x31, (byte) 0xdc, (byte) 0xcd,     (byte) 0x88, (byte) 0x45, (byte) 0x39, (byte) 0x81,     (byte) 0x6f, (byte) 0x5e, (byte) 0xb4, (byte) 0xac,     (byte) 0x8f, (byte) 0xb1, (byte) 0xf1, (byte) 0xa6 };  byte[] r = new byte[] { (byte) 0xd3, (byte) 0x5e, (byte) 0x47, (byte) 0x20,     (byte) 0x36, (byte) 0xbc, (byte) 0x4f, (byte) 0xb7,     (byte) 0xe1, (byte) 0x3c, (byte) 0x78, (byte) 0x5e,     (byte) 0xd2, (byte) 0x01, (byte) 0xe0, (byte) 0x65,     (byte) 0xf9, (byte) 0x8f, (byte) 0xcf, (byte) 0xa5,     (byte) 0xb6, (byte) 0x8f, (byte) 0x12, (byte) 0xa3,     (byte) 0x2d, (byte) 0x48, (byte) 0x2e, (byte) 0xc7,     (byte) 0xee, (byte) 0x86, (byte) 0x58, (byte) 0xe9,     (byte) 0x86, (byte) 0x91, (byte) 0x55, (byte) 0x5b,     (byte) 0x44, (byte) 0xc5, (byte) 0x93, (byte) 0x11 };  byte[] g = new byte[] { (byte) 0x04, (byte) 0x43, (byte) 0xbd, (byte) 0x7e,     (byte) 0x9a, (byte) 0xfb, (byte) 0x53, (byte) 0xd8,     (byte) 0xb8, (byte) 0x52, (byte) 0x89, (byte) 0xbc,     (byte) 0xc4, (byte) 0x8e, (byte) 0xe5, (byte) 0xbf,     (byte) 0xe6, (byte) 0xf2, (byte) 0x01, (byte) 0x37,     (byte) 0xd1, (byte) 0x0a, (byte) 0x08, (byte) 0x7e,     (byte) 0xb6, (byte) 0xe7, (byte) 0x87, (byte) 0x1e,     (byte) 0x2a, (byte) 0x10, (byte) 0xa5, (byte) 0x99,     (byte) 0xc7, (byte) 0x10, (byte) 0xaf, (byte) 0x8d,     (byte) 0x0d, (byte) 0x39, (byte) 0xe2, (byte) 0x06,     (byte) 0x11, (byte) 0x14, (byte) 0xfd, (byte) 0xd0,     (byte) 0x55, (byte) 0x45, (byte) 0xec, (byte) 0x1c,     (byte) 0xc8, (byte) 0xab, (byte) 0x40, (byte) 0x93,     (byte) 0x24, (byte) 0x7f, (byte) 0x77, (byte) 0x27,     (byte) 0x5e, (byte) 0x07, (byte) 0x43, (byte) 0xff,     (byte) 0xed, (byte) 0x11, (byte) 0x71, (byte) 0x82,     (byte) 0xea, (byte) 0xa9, (byte) 0xc7, (byte) 0x78,     (byte) 0x77, (byte) 0xaa, (byte) 0xac, (byte) 0x6a,     (byte) 0xc7, (byte) 0xd3, (byte) 0x52, (byte) 0x45,     (byte) 0xd1, (byte) 0x69, (byte) 0x2e, (byte) 0x8e, (byte) 0xe1 };      ecpublickey ecdhpubkey = (ecpublickey) keybuilder.buildkey(             keybuilder.type_ec_fp_public, (short) 0x0140, false);     ecdhpubkey.setfieldfp(p, (short) 0x0000, (short) 0x0028);     ecdhpubkey.seta(a, (short) 0x0000, (short) 0x0028);     ecdhpubkey.setb(b, (short) 0x0000, (short) 0x0028);     ecdhpubkey.setr(r, (short) 0x0000, (short) 0x0028);     ecdhpubkey.setg(g, (short) 0x0000, (short) g.length);      ecprivatekey ecdhprivkey = (ecprivatekey) keybuilder.buildkey(         keybuilder.type_ec_fp_private, (short) 0x0140, false);      // generate key pair (x, xg) ecdh.     keypair keypair = new keypair(ecdhpubkey, ecdhprivkey);     keypair.genkeypair();

i checked step step, going right, except last line keypair.genkeypair(); raises cryptoexception.illegal_value. in java card specifications, said means values fp, a, b, r , g specified ecpublickey invalid... verified, corresponds brainpool520r1. ? doing wrong ? curve not defined ecc ? thank in advance.

as maarten bodewes said in comments above, the problem didn't set domain parameters ecprivatekey although java card specifications mentions necessary ecpublickey.


Comments

Post a Comment

Popular posts from this blog

python - jinja2: TemplateSyntaxError: expected token ',', got 'string' -

-
i new jinja2 , having issue using python regular expression (re). in following code bold lines have error string in them. {% block content %} <div class="container"> {% l in lines %} {% if re.search(r"error", l) %} {# <<< throws error #} <b> {{ l }} </b> {% else %} {{ l }} <hr> {% endif %} {% endfor %} </div> {% endblock %} the re.search above throws following error: jinja2.exceptions.templatesyntaxerror templatesyntaxerror: expected token ',', got 'string' raw python code not supported in jinja2 template syntax. {% if re.search(r"error", l) %} replace line with {% if "error" in l %} can fix problem. if logical condition more complicated, should consider defining own custom filters (which can call python code) or complicated things in view layer. go check global namespace .
Read more

Qt4: how to send QString inside a struct via QSharedMemory -

-
i have struct struct control_data{ int column_number; qstring cell; }; i need send thread of qsharememory. read can't because qstring contains pointers inside. other ways? you have serialize struct byte array. can convert qstring const char* this: mystring.tostdstring().c_str(); but serializing qstring should work. the first step serialize struct qdatastream using qt, example here . then once struct can read , written can pass shared memory. a complete example of using qsharedmemory can found here . here relevant code: // first, test whether shared memory segment attached process. // if so, detach if (sharedmem.isattached()) { sharedmem.detach(); } ... qbuffer buffer; buffer.open( qbuffer::readwrite ); qdatastream out( &buffer ); out << youstruct; int size = buffer.size(); // size of int + size of qstring in bytes if ( !sharedmem.create( size ) ) { return; } // write shared memory sharedmem.lock(); char *to = (char*...
Read more

node.js - NodeJS remote terminal to Dropbear OpenWRT-Server -

-
i wandering whether there valid solution have remote terminal openwrt-box out of nodejs-app? connecting terminal works: ssh -i ~/.mykeys/id_rsa root@192.168.178.39 busybox v1.23.2 (2015-04-22 23:25:48 utc) built-in shell (ash) root@openwrt:~# the only interactive ssh solution nodejs doesn't interactive part described in readme.md following: var client = require('ssh2').client; var conn = new client(); conn.on('ready', function() { console.log('client :: ready'); conn.shell(function(err, stream) { if (err) throw err; stream.on('close', function() { console.log('stream :: close'); conn.end(); }).on('data', function(data) { console.log('stdout: ' + data); }).stderr.on('data', function(data) { console.log('stderr: ' + data); }); stream.end('ls -l\nexit\n'); }); }).connect({ host: '192.168.100.100', port: 22, username...
Read more