Re: Problem with signature verification on microchip embedded controller

2011-10-18 Thread Kenneth Goldman
Yes, you can verify 'by hand' by doing the raw public key operation, stripping off the padding and OID (what you call the asn1 formatting), and then comparing the hashes. When you say "this is what I got from the PIC controller, I assume you mean the result of applying the public key to the signa

RE: Problem with signature verification on microchip embedded controller

2011-10-18 Thread Dave Thompson
> From: owner-openssl-us...@openssl.org On Behalf Of TSCOconan > Sent: Tuesday, 18 October, 2011 14:57 >I'm trying to implement certificate signature verification > on a Microchip pic controller. >After reading PKCS#1 V2.1 > I realized that encryption is essentially the same as > si