Hi Jim, First of all thanks for your fast answer. But still it don't understand 100%! If have an SignatureValue which is
724PlFGHTTL1cFlLFU6g6UetcPVBEAN6oNpogAUx3rgELFH86gA+NqvjVf316zek But how can I but this now into an ECDSA_SIG struct? Jürgen -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of jimmy Sent: Dienstag, 20. März 2007 09:57 To: openssl-users@openssl.org Subject: Re: Problem with ecdsa Jürgen Heiss wrote: > Hi Nils, > > Hmm, I thin k I can't follow you. > Can you maybe give me a short example? > > Thanks and regards > > Jürgen > what he means is that there is no asn.1 sequence, just the 2 integers concat'ed. normally you would've expected to have something like this: sequence { // der tag 0x30 int r; int s; } in the absence of such a struct u just have 2 int's put together (no tags), as he mentioned. IIRC ssh-dss signature is similar, just 2 int's concat'd. hope that's clear. >>> 724PlFGHTTL1cFlLFU6g6UetcPVBEAN6oNpogAUx3rgELFH86gA+NqvjVf316zek >> are you _really_ sure that this is a ecdsa-with-something signature ? >> Your data starts with 0xEF,0x6E... but a ecdsa signature is a >> asn.1 sequence of two asn.1 integers and hence must begin with 0x30 ... > > hmm, actually I was wrong. According to rfc 4050 the xml ecdsa-* signature > value is simply the concatenation of the two signature value without the > asn.1 der encoding ... > OpenSSL has no function to handle this signature format directly. > > Nils -jb -- mathematician, n.: Some one who believes imaginary things appear right before your i's. ______________________________________________________________________ OpenSSL Project http://www.openssl.org User Support Mailing List openssl-users@openssl.org Automated List Manager [EMAIL PROTECTED] ______________________________________________________________________ OpenSSL Project http://www.openssl.org User Support Mailing List openssl-users@openssl.org Automated List Manager [EMAIL PROTECTED]
