Search found 86 matches
- Mon Dec 03, 2018 9:23 pm
- Forum: MCU Programming
- Topic: How to study STM32?
- Replies: 7
- Views: 30415
How to study STM32?
Hello, everyone. I want to study STM32. But a lot of material introduces the STM32. I don't know which one I should choose to see firstly. In other words, for STM32 study, what is the best learning steps?
- Fri Nov 23, 2018 6:15 am
- Forum: Questions & Answers
- Topic: My JAVACARD cannot run on the reader omikey
- Replies: 6
- Views: 9824
Re: My JAVACARD cannot run on the reader omikey
e... Is your PC OK? Or is your omikey reader OK? I think add a hub between pc and reader may help you to resolve the question.
- Wed Nov 21, 2018 5:24 am
- Forum: Questions & Answers
- Topic: My JAVACARD cannot run on the reader omikey
- Replies: 6
- Views: 9824
Re: My JAVACARD cannot run on the reader omikey
Do you have Bus Hound on your PC? I think you may post the data obtained from Bus Hound.
- Wed Nov 21, 2018 5:10 am
- Forum: Questions & Answers
- Topic: My JAVACARD cannot run on the reader omikey
- Replies: 6
- Views: 9824
Re: My JAVACARD cannot run on the reader omikey
What's the error you got?
- Sun Nov 18, 2018 10:28 pm
- Forum: Questions & Answers
- Topic: How to detect the frequency of a card or tag
- Replies: 3
- Views: 8373
Re: How to detect the frequency of a card or tag
In typeB protocol, the ATQB response command contains the bit rate supported by JavaCard.
- Fri Nov 16, 2018 5:36 am
- Forum: Questions & Answers
- Topic: What's the hash prefixes for RIPEMD160
- Replies: 3
- Views: 7826
Re: What's the hash prefixes for RIPEMD160
- MD5: 0x30, 0x20, 0x30, 0x0C, 0x06, 0x08, 0x2A, 0x86, - 0x48, 0x86, 0xF7, 0x0D, 0x02, 0x05, 0x05, 0x00, - 0x04, 0x10 - - RIPEMD-160: 0x30, 0x21, 0x30, 0x09, 0x06, 0x05, 0x2B, 0x24, - 0x03, 0x02, 0x01, 0x05, 0x00, 0x04, 0x14 - - SHA-1: 0x30, 0x21, 0x30, 0x09, 0x06, 0x05, 0x2b, 0x0E, - 0x03, 0x02, 0x...
- Wed Oct 31, 2018 2:56 am
- Forum: Questions & Answers
- Topic: How to set EC parameters of Keypair
- Replies: 5
- Views: 9416
Re: How to set EC parameters of Keypair
If you call KeyPair() as KeyPair(KeyPair.ALG_EC_FP, keyLen), the encapsulated keys are uninitialized. Then genKeyPair() will initialize the key with default paramters.
If you call KeyPair() as KeyPair(pubKey, priKey), the encapsulated keys will be initialized with the parameters of pubKey.
If you call KeyPair() as KeyPair(pubKey, priKey), the encapsulated keys will be initialized with the parameters of pubKey.
- Wed Oct 31, 2018 2:46 am
- Forum: Questions & Answers
- Topic: how to solve this question?
- Replies: 7
- Views: 10572
Re: how to solve this question?
T0 is an imperfect protocol. It claims the applet and host on pc knows how many bytes will be translated. You may add setIncomingAndReceive() and try this apdu again.
- Fri Oct 12, 2018 4:00 am
- Forum: Questions & Answers
- Topic: counter for byte array
- Replies: 1
- Views: 5167
Re: counter for byte array
In JavaCard applet, you can do like this: case (byte)0x02: byte temp[] = new byte[(short)20]; temp[(short)(temp.length -1)] = (byte)0x66; Util.setShort(buf, (short)0, (short)temp.length); Util.arrayCopy(temp, (short)0, buf, (short)2, (short)temp.length); apdu.setOutgoingAndSend((short)0, (short)(2 +...
- Fri Oct 12, 2018 3:43 am
- Forum: Questions & Answers
- Topic: Rsa algorithom with private key
- Replies: 6
- Views: 10729
Re: Rsa algorithom with private key
for 1024bits example: //create 1024bits key 00 00 00 80; // set private key 00 01 00 80 74EFE44606BB20AAFE27BE66391B982EFE381C94B77D9C4FE24A28A4411CBF882A60FD8026938B3D5CD3ABDBE6FB2241101551B228EECF85118FEB7213B6C91D34C411EDC1C3153ECC9192F112B298938FF9DEE798DB89EAAF085542B840998E933637E20E6635B495FF...