Thank you for your help.
I finally understood how to struct the R and S. Following the TLV, I can get the right signature.
Thank everybody.
Search found 86 matches
- Tue Nov 17, 2015 4:34 am
- Forum: Algorithm School
- Topic: how to define total length of ECC F2M 571bits signture
- Replies: 5
- Views: 9968
- Fri Nov 06, 2015 12:31 am
- Forum: Algorithm School
- Topic: Why length of R is 168bits in ECC FP 160?
- Replies: 1
- Views: 6578
Why length of R is 168bits in ECC FP 160?
hello,
Lately, I tested ECC. When I generated a ecc keypair of 160bits, I found the length R is 168bits. That made me very doubt.
Why length of R is 168bits while ecc key length is 160bits?
Lately, I tested ECC. When I generated a ecc keypair of 160bits, I found the length R is 168bits. That made me very doubt.
Why length of R is 168bits while ecc key length is 160bits?
- Fri Nov 06, 2015 12:22 am
- Forum: Algorithm School
- Topic: how to define total length of ECC F2M 571bits signture
- Replies: 5
- Views: 9968
Re: how to define total length of ECC F2M 571bits signture
UNKNwYSHSA wrote:Have you tried to calculate the signature of this bits length using openssl?
yes. I got a signature such as "30 81 94 02 ...".
- Wed Nov 04, 2015 9:37 pm
- Forum: Communication
- Topic: How long after the fido u2f initialization package to receive cont packets?
- Replies: 1
- Views: 6122
How long after the fido u2f initialization package to receive cont packets?
hello,
I have a question about fido. how process time out?
When I received a fido init packet and payload data length is greater than report payload, I need receive cont packet. Then, how long after the fido u2f initialization package to receive cont packets?
I have a question about fido. how process time out?
When I received a fido init packet and payload data length is greater than report payload, I need receive cont packet. Then, how long after the fido u2f initialization package to receive cont packets?
- Wed Nov 04, 2015 7:34 am
- Forum: Shopping FAQ
- Topic: Have cards with mifare?
- Replies: 3
- Views: 8361
Have cards with mifare?
hello,
Do you have cards with mifare? which chip manufacturer of the card?
Do you have cards with mifare? which chip manufacturer of the card?
- Wed Nov 04, 2015 7:30 am
- Forum: Algorithm School
- Topic: how to define total length of ECC F2M 571bits signture
- Replies: 5
- Views: 9968
how to define total length of ECC F2M 571bits signture
Hello,
when I compute a signature of ecc f2m 571bits, I get a result. But the result's length greater than 0x80. how to define total length of ECC F2M 571bits signture?
when I compute a signature of ecc f2m 571bits, I get a result. But the result's length greater than 0x80. how to define total length of ECC F2M 571bits signture?