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java card- ECDSA signature
Posted: Wed Oct 19, 2016 11:37 pm
by Usiger
I have a java card. And I found that this card supports ECC over GF(p) for keys up to 320 bits and SHA-256 as well. Does this mean that the card supports ECDSA signature mode such as ALG_ECDSA_SHA256? Thanks for any help.
Re: java card- ECDSA signature
Posted: Thu Oct 20, 2016 3:35 am
by Heather
Generally speaking, your card will support ALG_ECDSA_SHA256 as well. But it really depends on the implementation.
Re: java card- ECDSA signature
Posted: Thu Oct 20, 2016 3:55 am
by chico0609
Run JCALGTest on your card and you can get all the supported terms from the test result.
viewtopic.php?f=30&t=40
Re: java card- ECDSA signature
Posted: Thu Oct 20, 2016 5:52 am
by Usiger
Thank you for all help. I have run JCAlgTest and my card supports ALG_ECDSA_SHA256 mode.
