[Scene]
GCM + AES
[Code 01]
encrypt:
write IV to
write encryped stuff to
decrypt:
using and -- ok
[Code 02]
encrypt:
open std::ofstream for
write IV to
write encryped stuff to ... (FileSource(, true, new
AuthenticatedEncryptionFilter(e, new FileSink()));)
decrypt:
using -- error
is not "IV + encrypted".
I doubt FileSink Constructor "FileSink (std::ostream )" will modify
std::ostream rather than continuing writing stream.
在 2018年6月26日星期二 UTC+8下午3:40:14，Jeffrey Walton写道：
>
>
>
> On Tuesday, June 26, 2018 at 2:13:25 AM UTC-4, Martin wrote:
. stringSource are accepted as well :-)
Thanks
Martin
--~--~-~--~~~---~--~~
You received this message because you are subscribed to the Crypto++ Users
Google Group.
To unsubscribe, send an email to [EMAIL PROTECTED]
More information about Crypto++ and this group
Thanks! I did some further research and the general idea seems to be good.
They are even moving from the explicit nonce in TLS v1.1 and v1.2 to
(again) a fully implicit nonce in TLS v1.3
(https://tools.ietf.org/html/draft-ietf-tls-tls13-07 ).
The implementation I had in the original message,
hod
which does not change the iv, like:
class CtrNonceGCMEncryption : public CryptoPP::GCM::
Encryption {
public:
void Resynchronize() { m_state = State_IVSet; }
};
and using this method instead (as well as in Decryption)? This would save
on random nonce generation and transmission.
Regar
Hi,
I built Crypto++ 7 using msvc2013, release dll. I linked it to my msvc2013
Qt app. If my app is built in release mode it runs. When I build it in
debug configuration, linker outputs several LNK2005 errors:
cryptopp.lib(cryptopp.dll):-1: error: LNK2005: "public: static char const *
__cdecl
Hi,
I built Crypto++ 7 using msvc2013, release dll. I linked it to my msvc2013
Qt app. If my app is built in release mode it runs. When I build it in
debug configuration, linker outputs several LNK2005 errors:
cryptopp.lib(cryptopp.dll):-1: error: LNK2005: "public: __thiscall
To be honest, at the moment, I have no clue how to supply my file data
contents and signature (which is separated from my file, it exists in
std:string variable) to cryptopp verifying pipeline. Any advise welcome.
--
You received this message because you are subscribed to "Crypto++ Users".
Thanks. I'm going to study it. However, if someone know sample code how to
verifyy lare file signature, please post it here.
--
You received this message because you are subscribed to "Crypto++ Users". More
information about Crypto++ and this group is available at
http://www.cryptopp.com and
I would like to verify a signature I previously created for a file
using CryptoPP::ECDSA::Signer . The file
is quite big (several GB) and I don't want to load it to memory in one
piece as my device can run out of RAM. Is there a way crypto++ can verify
large file's signature without loading
The exception is thrown on line 1408 of pubkey.h:
virtual size_t SLen(const DL_GroupParameters ) const
>
> {return params.GetSubgroupOrder().ByteCount();}
>
>
--
You received this message because you are subscribed to "Crypto++ Users". More
information about Crypto++ and
I wrote this code (at the moment my intention is to be able to supply
signature and file contents from different sources which is my case, after
it works I will optimize it to pump file contents in small pieces):
CryptoPP::ByteQueue queue;
>
> queue.Put((const CryptoPP::byte
OK, I isolated minimal example whih causes R6025 pure virtual fucntion call
exception. This code is OK:
CryptoPP::FileSource ss1( file.absoluteFilePath().toLocal8Bit().constData(),
true,
>
>
> new CryptoPP::SignerFilter( prng,
>
>
> CryptoPP::ECDSA::Signer( key ),
>
>
>
For me, it seems that Cryptopp has some problems reading signature length
when pumpall = false. Do you think it is a bug or compiler issue?
This code (it copies contents of file to signature variable) works:
CryptoPP::StringSink signatureSink( signature );
CryptoPP::FileSource
This is the call stack when the exeption is thrown:
1 memcmp
MSVCR120D0xfa614fa
2 purecall
On Wednesday, October 24, 2018 at 8:02:38 PM UTC+2, Jeffrey Walton wrote:
>
>
> Missing signerFilter in this one.
>
> Jeff
>
I know...it was just a demonstration what works and what doesn't. So this
code doesn't work, it prouces pure function call exception on pumpall:
CryptoPP::StringSink
On Wednesday, October 24, 2018 at 8:02:38 PM UTC+2, Jeffrey Walton wrote:
>
>
> Missing signerFilter in this one.
>
> Jeff
>
I don't understand it, this code works:
CryptoPP::FileSource f( file.absoluteFilePath().toLocal8Bit().constData(),
true, new
I finally have working code:
CryptoPP::ECDSA::PublicKey key; key.Load(
queue);
CryptoPP::ECDSA::Verifier verifier(key);
CryptoPP::SignatureVerificationFilter verificationFilter(verifier, NULL,
CryptoPP::SignatureVerificationFilter::SIGNATURE_AT_BEGIN);
CryptoPP::FileSource fileSource(
18 matches
Mail list logo
