On Tue, Mar 18, 2014 at 1:02 PM, axisofevil wrote:
> I dug into source - it's in DER format so a sleezy hacked function is this: (
> I use curve NID_X9_62_prime256v1 )
> ECDSA_SIG * sig
> BIGNUM * r;
> BIGNUM * s;
>
> /* A correct DER-encoded signatu
On Tue, Mar 18, 2014, axisofevil wrote:
> I dug into source - it's in DER format so a sleezy hacked function is this: (
> I use curve NID_X9_62_prime256v1 )
> ECDSA_SIG * sig
> BIGNUM * r;
> BIGNUM * s;
>
> /* A correct DER-encoded signature has the fol
I dug into source - it's in DER format so a sleezy hacked function is this: (
I use curve NID_X9_62_prime256v1 )
ECDSA_SIG * sig
BIGNUM * r;
BIGNUM * s;
/* A correct DER-encoded signature has the following form:
0x30: a header by
I had been using the lower level ECDSA_do_sign for EC signing but had to
migrate to EVP functions.
If I get signature from EVP_DigestSignFinal(), what format is the signature,
and how can I extract the 'real' bytes? I'd expect 32 bytes each for r and
s. I need the 'real bytes' for compatibility.
