Wei, When I call RsaPrv.AccessKey().BERDecodeKey(bqRsaPrv), the BERDecodeKey method is still expecting the additional x509/pkcs8 wrapper.
-----Original Message----- From: Wei Dai [mailto:[EMAIL PROTECTED] Sent: Saturday, November 22, 2003 5:01 PM To: [EMAIL PROTECTED] Subject: Re: Getting different results from different Crypto++ versions What do you mean by "did not work"? Please provide more information. On Tue, Nov 18, 2003 at 05:38:11PM -0800, James Goodrich wrote: > Thanks again Wei. I promise this is the last follow up in this thread. Your suggestion worked for the case cited, but did not work in the following instance: > > RSAES_PKCS1v15_Decryptor RsaPrv; > RsaPrv.AccessKey().BERDecodeKey(bqRsaPrv); > > Could you give me one of your famous 1 or 2 lines of code that make everything work? > > -----Original Message----- > From: Wei Dai [mailto:[EMAIL PROTECTED] > Sent: Tuesday, November 18, 2003 3:00 PM > To: [EMAIL PROTECTED] > Subject: Re: Getting different results from different Crypto++ versions > > > RSASSA_PKCS1v15_MD5_Signer RsaPrv; > RsaPrv.AccessKey().BERDecodeKey(bqRsaPrv); > > On Tue, Nov 18, 2003 at 02:18:11PM -0800, James Goodrich wrote: > > Thanks Wei, that did the trick. Now I have to solve the problem in reverse: I need to use the byte queue to create a key, which I assume is now expecting the x509/pkcs8 wrapped key. How can I get the following to work in 5.1, after making the modifications to the sample code as you suggested? > > > > RSASSA_PKCS1v15_MD5_Signer RsaPrv( bqRsaPrv ); > > > > -----Original Message----- > > From: Wei Dai [mailto:[EMAIL PROTECTED] > > Sent: Tuesday, November 18, 2003 1:07 PM > > To: [EMAIL PROTECTED] > > Subject: Re: Getting different results from different Crypto++ versions > > > > > > You can get the same behavior in 5.1 using: > > > > RsaPrv.GetKey().DEREncodeKey(bqRsaPrv); > > > > The DEREncode() function added an additional x509/pkcs8 wrapper around the > > key to be more compatible with other applications. > > > > On Tue, Nov 18, 2003 at 11:21:40AM -0800, James Goodrich wrote: > > > I have a question as to why some very similar code produces different results using two different versions of Crypto++, and more importantly, how to replicate the results using the former version with the latter. > > > > > > Here is the code, first using the older version. Unfortunately, I'm not sure of the version, but it's somewhere around 3.5 > > > ///////////////////////// > > > time_t Time; > > > time(&Time); > > > > > > BlockTransformation *pCipher = new DES_EDE_Encryption( (BYTE*)CIPHER_SEED); > > > X917RNG rng( pCipher,(BYTE*)&Time ); > > > > > > RSAES_PKCS1v15_Decryptor RsaPrv( rng, 1024 ); > > > RSAES_PKCS1v15_Encryptor RsaPub( RsaPrv ); > > > > > > ByteQueue bqRsaPrv; > > > RsaPrv.DEREncode( bqRsaPrv ); > > > DWORD dwcbRsaPrv = bqRsaPrv.CurrentSize(); > > > > > > ByteQueue bqRsaPub; > > > RsaPub.DEREncode( bqRsaPub ); > > > DWORD dwcbRsaPub = bqRsaPub.CurrentSize(); > > > ////////////////////////// > > > > > > Now an attempt to do this same thing using version 5.1 > > > ///////////////////////// > > > time_t Time; > > > time(&Time); > > > > > > BlockTransformation *pCipher = new DES::Encryption( (BYTE*)CIPHER_SEED); > > > X917RNG rng( pCipher,(BYTE*)&Time ); > > > > > > RSAES_PKCS1v15_Decryptor RsaPrv( rng, 1024 ); > > > RSAES_PKCS1v15_Encryptor RsaPub( RsaPrv ); > > > > > > ByteQueue bqRsaPrv; > > > RsaPrv.DEREncode( bqRsaPrv ); > > > DWORD dwcbRsaPrv = bqRsaPrv.CurrentSize(); > > > > > > ByteQueue bqRsaPub; > > > RsaPub.DEREncode( bqRsaPub ); > > > DWORD dwcbRsaPub = bqRsaPub.CurrentSize(); > > > /////////////////////////// > > > > > > In the first case, I get > > > > > > dwcbRsaPrv = 605 > > > dwcbRsaPub = 138 > > > > > > In the second case, I get > > > > > > dwcbRsaPrv = 633 > > > dwcbRsaPub = 160 > > > > > > Why the difference in size and what can I do differently to get the previous sizes to be returned using the newer version (which is what I really need). > > >
