Re: [cryptopp-users] Recovering public key from hash and signature
It should be obvious, but you cannot verify (as in "technically impossible") a digital signature without having public key of the signer. It is not recommended to re-invent the basic digital signature algorithms or implementations. > On Sep 22, 2021, at 15:30, Luca Bonaldo wrote: > > Hi Jeff, I apologize for my insistance but I do really need support. I'm > writing this code for an important project and I cannot wrap my head around a > solution. If I'm not asking for too much, could you please guide me to the > correct wiki's pages or help me writing a pseudo code to achieve my goal? > Thank you so much! > > Il giorno domenica 19 settembre 2021 alle 21:45:26 UTC+2 Jeffrey Walton ha > scritto: >> On Sun, Sep 19, 2021 at 5:09 AM Luca Bonaldo wrote: >> > >> > Hi, I was writing a library to generate a pair of keys, use the private >> > key to sign a hash and finally verify the signature only knowing the hash >> > and the signature. >> > >> > I'm having quite a hard time doing that, in fact I searched so much just >> > to find myself at the start point. I'll leave my code here, hope that >> > someone can help me. >> > >> > https://www.codepile.net/pile/Jx2RlQxm >> >> You should probably take a look at >> https://www.cryptopp.com/wiki/Main_Page. It has lots of examples. >> >> Jeff > > -- > You received this message because you are subscribed to the Google Groups > "Crypto++ Users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to cryptopp-users+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/cryptopp-users/547f5190-b89b-4068-a594-29e231579ed2n%40googlegroups.com. -- You received this message because you are subscribed to the Google Groups "Crypto++ Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to cryptopp-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/cryptopp-users/03187FDB-FE20-4A40-8E6E-51EB37656EE5%40gmail.com. smime.p7s Description: S/MIME cryptographic signature
Re: [cryptopp-users] Recovering public key from hash and signature
Hi Jeff, I apologize for my insistance but I do really need support. I'm writing this code for an important project and I cannot wrap my head around a solution. If I'm not asking for too much, could you please guide me to the correct wiki's pages or help me writing a pseudo code to achieve my goal? Thank you so much! Il giorno domenica 19 settembre 2021 alle 21:45:26 UTC+2 Jeffrey Walton ha scritto: > On Sun, Sep 19, 2021 at 5:09 AM Luca Bonaldo wrote: > > > > Hi, I was writing a library to generate a pair of keys, use the private > key to sign a hash and finally verify the signature only knowing the hash > and the signature. > > > > I'm having quite a hard time doing that, in fact I searched so much just > to find myself at the start point. I'll leave my code here, hope that > someone can help me. > > > > https://www.codepile.net/pile/Jx2RlQxm > > You should probably take a look at > https://www.cryptopp.com/wiki/Main_Page. It has lots of examples. > > Jeff > -- You received this message because you are subscribed to the Google Groups "Crypto++ Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to cryptopp-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/cryptopp-users/547f5190-b89b-4068-a594-29e231579ed2n%40googlegroups.com.
Re: [cryptopp-users] Recovering public key from hash and signature
On Sun, Sep 19, 2021 at 5:09 AM Luca Bonaldo wrote: > > Hi, I was writing a library to generate a pair of keys, use the private key > to sign a hash and finally verify the signature only knowing the hash and the > signature. > > I'm having quite a hard time doing that, in fact I searched so much just to > find myself at the start point. I'll leave my code here, hope that someone > can help me. > > https://www.codepile.net/pile/Jx2RlQxm You should probably take a look at https://www.cryptopp.com/wiki/Main_Page. It has lots of examples. Jeff -- You received this message because you are subscribed to the Google Groups "Crypto++ Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to cryptopp-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/cryptopp-users/CAH8yC8kLJKCuE-9ZtMFEKjc9gsAoSWKV77XXmFRASEh1DKj2MA%40mail.gmail.com.
