Ok David, now i'm deleting RNG from class members. I'm not sure that I've
understand your example but i will try...
Il giorno sabato 14 luglio 2012 19:08:07 UTC+2, David Irvine ha scritto:
>
> It seems you may not be using the RNG correctly. It's generally preferred
> to have on per thread at le
Yes, i've done (i wrote my method in last post and called that variable
DigitalSign) but it Segfault However thanks.
Now I'm reading the link that David posted.
Il giorno sabato 14 luglio 2012 19:58:45 UTC+2, Ingo Naumann ha scritto:
>
> I believe that you should declare the variable "Sign"
I believe that you should declare the variable "Sign" in your method
"SignHash" and maybe you should not have named it "Sign" because you
are using that for some other things already.
I am referring to the variable inside the "StringSink" command. So,
tru to rename that into "result", or whatever,
Hi Ingo,
what i want is sign the RIPEMD128 hash and the sign it. I choose RSA
because it is most common and available in cryptopp, and its signature
scheme use SHA1...
Variable string Sign is the end of StringSink, i define it in class Sign
(chek my last post) and i initialize that so:
void Si
It seems you may not be using the RNG correctly. It's generally preferred
to have on per thread at least (or a global if you like). i.e. in test.cpp
you will see how this was done. In your case I am not sure you should have
a class member RNG used as you have. This can cause all sorts of issues
w
Hi David,
this is the error i read in the shell: /bin/sh: line 1: 5233 Segmentation
fault/root//debug/ . /src/ . I'm new user of
C++ so it could be not a segfault, but i'm not able to understand if it is
or not. The class Sign is:
class Sign
{
private:
RSA::PrivateKey RSAprivate;
strin
Dear Michele,
How do you initialize the string variable "Sign"?
And, BTW, one comment on item 4) in your first mail. The command you
are using in your code is for signing a message. The message gets
hashed and then the RSA function is applied to this hash (simplified
explanation). In your case, y
Are you sure you are getting a segfault and not an exception (possibly from
the RNG, I am not sure how you are using this). Could you post the frame
stack or perhaps a mini (smallest possible) version of a program that
exposes this issue.
Best Regards
David Irvine
On Sat, Jul 14, 2012 at 4:37 PM,
Thank you very much!
David Irvine-2 wrote:
>
> You may find that reading the file test.cpp will help you quickly grab the
> simpler concepts. There is a simple.h which will show you
> default initialised algorithms. See test.cpp line 483 (approx, see below)
> HmacFile for an implementation to s
You may find that reading the file test.cpp will help you quickly grab the
simpler concepts. There is a simple.h which will show you
default initialised algorithms. See test.cpp line 483 (approx, see below)
HmacFile for an implementation to start you off. It's trivial to replace
the hash algorithm
OK, now i'm sure that i generate a pair RSAprivate/RSApublic of valid keys.
My new signing function is:
void Sign::SignHash( string Digest)
{
RSASS < PSS , SHA1 >::Signer Signer(RSAprivate);
StringSource( Digest, true, new SignerFilter( RNG, Signer, new
StringSink(Sign ) ) );
}
It crashes agai
Hi Fraser, you are right!!
I've just tried ( sorry for my english) your "checking code" and the result
is false twice. So i modified my code with that you suggested, in previous
email:
[...]
1. RSA::PrivateKey RSAprivate;
2. RSAprivate.GenerateRandomWithKeySize(RNG,2048);
3. RSA::PublicKey RSA
Hi there,
I'm having a little trouble finding my way into Crypto++. I'm not very
proficient in C++ and I just need an HMAC with underlying RIPEMD160 to
verify the result of test vectors for a PBKDF2 built in VHDL. I have no
aversion to reading, but I have no idea which parts of the crypto++ wiki a
Hi Michele,
Yes, you're only constructing the private key here, and then
initialising the public key with an invalid private key, which makes
the public key invalid also. The keys are not being generated
here.
Inside Signature::SignHash, try adding the foll
Yes, before calling Signature::SignHash i generate my keys with that code
CryptoPP::RSA::PrivateKey RSAPrivate; //private key generating
CryptoPP::RSA::PublicKey RSAPublic(RSAPrivate);//public key
generating
I took this code in a wiki sample and i tested it in a stand alone
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