RE: Base64 Help
int main (void)
{
BIO *bmem, *b64;
BUF_MEM *bptr;
char message[] = Hello World \n;
int written = 0;
b64 = BIO_new(BIO_f_base64());
bmem = BIO_new(BIO_s_mem());
b64 = BIO_push(b64, bmem);
written = BIO_write(b64, message, strlen(message));
cout written endl;
BIO_get_mem_ptr(b64, bptr);
BIO_flush(b64);
BIO_free_all(b64);
}
This should be straight forward, but it is not. It appears that base64
encoding to something other than stdout or a file does not work. I am using
vc++ 6.0, on windows platform. I can't get it to work with stdout either. I
get no compile or runtime errors. The bptr gets a valid address, but the
address has nothing in it. Also the system tells me that 13 characters were
written, which is the correct number.Does anyone see why this is not working
correctly? I have even change the line BIO_get_mem_ptr(b64, bptr); to
BIO_get_mem_ptr(bmem, bptr); which does nothing.
Thanks in Advance...
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Joseph Oreste Bruni
Sent: Thursday, October 13, 2005 4:36 PM
To: openssl-users@openssl.org
Subject: Re: Base64 Help
Using VC++ is your first problem... :)
The call to BIO_push is your problem. You overwrite your reference to the
b64 BIO with another reference to the mem BIO. So now, b64 points to mem.
Do this:
int main()
{
BIO *bmem, *b64;
char message[] = Hello World \n;
int written = 0;
b64 = BIO_new(BIO_f_base64());
bmem = BIO_new_fp(stdout,0);
b64 = BIO_push(b64, bmem);
written = BIO_write(b64, message, strlen(message));
cout written endl;
BIO_flush(b64);
BIO_free_all(b64);
}
This will output your Base64 to stdout. Then if you need to use a mem BIO
just change out the call to what you had, but you'll need to get pointers to
the data to display it (or whatever).
On Oct 13, 2005, at 1:55 PM, Adam Jones wrote:
Visual C++ did not complain nor did it error out when it ran, but you
are correct it does take a BUF_MEM structure. I also added another BIO
method to the code. I also read that section in the book you
suggested. I also made the code simple, but it appears that it still
does not give me the
base64
encoding. Any suggestions...
int main()
{
BIO *bmem, *b64;
char message[] = Hello World \n;
int written = 0;
b64 = BIO_new(BIO_f_base64());
bmem = BIO_new(BIO_s_mem());
bmem = BIO_push(b64, bmem);
written = BIO_write(b64, message, strlen(message));
cout written endl;
BIO_flush(b64);
BIO_free_all(b64);
}
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Joseph Oreste
Bruni
Sent: Thursday, October 13, 2005 2:46 PM
To: openssl-users@openssl.org
Subject: Re: Base64 Help
b64 is a filter BIO, it won't hold on to your data. You need to
append a memory BIO to the back end of the filter bio so that your
output can be accumulated.
There are samples on how to do this in the OpenSSL book as well as a
rather lengthy discussion on BIO's in general.
Also BIO_get_mem_ptr() gives you a pointer to BUF_MEM structure, not
a char*. Your compiler should have yelled at you for that.
On Oct 13, 2005, at 12:41 PM, Adam Jones wrote:
Below is the code I am using to try and test the base64 encode in
openssl. I am using rand to generate a binary and then encoding that
to base64. Instead of using a file, I want to use memory to output
the
base64 encoded buffer. This code compiles and runs, but my output
buffer is all 0. Any help would be appreciated. What have I missed?
The variable written does show 16 like it should..help!
#include iostream
#include memory.h
#include evp.h
#include rand.h
#include bio.h
using namespace std;
int main()
{
BIO *b64;
unsigned char *pbuffer = new unsigned char [16]; unsigned char
*pOutput = new unsigned char [100]; int written;
memset(pOutput, '0', 100);
RAND_bytes(pbuffer, 16);
b64 = BIO_new(BIO_f_base64());
written = BIO_write(b64, pbuffer, 16);
cout written endl;
BIO_get_mem_ptr(b64, pOutput);
for ( int nLoop = 0; nLoop 16; nLoop++) { cout pOutput[nLoop];
} cout \n endl;
BIO_free_all(b64);
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Re: Base64 Help
On Mon, Oct 17, 2005, Adam Jones wrote:
int main (void)
{
BIO *bmem, *b64;
BUF_MEM *bptr;
char message[] = Hello World \n;
int written = 0;
b64 = BIO_new(BIO_f_base64());
bmem = BIO_new(BIO_s_mem());
b64 = BIO_push(b64, bmem);
written = BIO_write(b64, message, strlen(message));
cout written endl;
BIO_get_mem_ptr(b64, bptr);
BIO_flush(b64);
BIO_free_all(b64);
}
This should be straight forward, but it is not. It appears that base64
encoding to something other than stdout or a file does not work. I am using
vc++ 6.0, on windows platform. I can't get it to work with stdout either. I
get no compile or runtime errors. The bptr gets a valid address, but the
address has nothing in it. Also the system tells me that 13 characters were
written, which is the correct number.Does anyone see why this is not working
correctly? I have even change the line BIO_get_mem_ptr(b64, bptr); to
BIO_get_mem_ptr(bmem, bptr); which does nothing.
Thanks in Advance...
Have you tried looking at the contents of bptr before you free the BIOs? The
BIO_free_all() calls will free up the memory buffer.
Steve.
--
Dr Stephen N. Henson. Email, S/MIME and PGP keys: see homepage
OpenSSL project core developer and freelance consultant.
Funding needed! Details on homepage.
Homepage: http://www.drh-consultancy.demon.co.uk
__
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Re: Base64 Help
// Set up a base64 encoding BIO that writes to a memory BIO. BIO* b64 = BIO_new(BIO_f_base64()); BIO* out = BIO_new(BIO_s_mem()); BIO_set_flags(out, BIO_CLOSE); // probably redundant b64 = BIO_push(b64, out); // Send the data. // e.g., i2d_X509_bio(b64, mX509); BIO_write(b64, message, strlen(message)); // Collect the encoded data. BIO_flush(b64); char* temp; int count = BIO_get_mem_data(out, temp); // ... use the data, and then: BIO_free_all(b64); // temp is now invalid! -- Rich Salz, Chief Security Architect DataPower Technology http://www.datapower.com XS40 XML Security Gateway http://www.datapower.com/products/xs40.html __ OpenSSL Project http://www.openssl.org User Support Mailing Listopenssl-users@openssl.org Automated List Manager [EMAIL PROTECTED]
RE: Base64 Help
Thank you! It finally works...It appears you have to flush the BIO before you get a pointer to it (as shown in your code below. Thanks! -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Rich Salz Sent: Monday, October 17, 2005 12:41 PM To: Adam Jones Cc: openssl-users@openssl.org Subject: Re: Base64 Help // Set up a base64 encoding BIO that writes to a memory BIO. BIO* b64 = BIO_new(BIO_f_base64()); BIO* out = BIO_new(BIO_s_mem()); BIO_set_flags(out, BIO_CLOSE); // probably redundant b64 = BIO_push(b64, out); // Send the data. // e.g., i2d_X509_bio(b64, mX509); BIO_write(b64, message, strlen(message)); // Collect the encoded data. BIO_flush(b64); char* temp; int count = BIO_get_mem_data(out, temp); // ... use the data, and then: BIO_free_all(b64); // temp is now invalid! -- Rich Salz, Chief Security Architect DataPower Technology http://www.datapower.com XS40 XML Security Gateway http://www.datapower.com/products/xs40.html __ OpenSSL Project http://www.openssl.org User Support Mailing Listopenssl-users@openssl.org Automated List Manager [EMAIL PROTECTED] Confidentiality Notice: This e-mail and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you are not the named addressee you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately by e-mail if you have received this e-mail by mistake and delete this e-mail from your system. If you are not the intended recipient you are notified that disclosing, copying, distributing or taking any action in reliance on the contents of this information is strictly prohibited. __ OpenSSL Project http://www.openssl.org User Support Mailing Listopenssl-users@openssl.org Automated List Manager [EMAIL PROTECTED]
Re: Base64 Help
b64 is a filter BIO, it won't hold on to your data. You need to
append a memory BIO to the back end of the filter bio so that your
output can be accumulated.
There are samples on how to do this in the OpenSSL book as well as a
rather lengthy discussion on BIO's in general.
Also BIO_get_mem_ptr() gives you a pointer to BUF_MEM structure,
not a char*. Your compiler should have yelled at you for that.
On Oct 13, 2005, at 12:41 PM, Adam Jones wrote:
Below is the code I am using to try and test the base64 encode in
openssl. I am using rand to generate a binary and then encoding
that to base64. Instead of using a file, I want to use memory to
output the base64 encoded buffer. This code compiles and runs, but
my output buffer is all 0. Any help would be appreciated. What have
I missed?
The variable written does show 16 like it should..help!
#include iostream
#include memory.h
#include evp.h
#include rand.h
#include bio.h
using namespace std;
int main()
{
BIO *b64;
unsigned char *pbuffer = new unsigned char [16];
unsigned char *pOutput = new unsigned char [100];
int written;
memset(pOutput, '0', 100);
RAND_bytes(pbuffer, 16);
b64 = BIO_new(BIO_f_base64());
written = BIO_write(b64, pbuffer, 16);
cout written endl;
BIO_get_mem_ptr(b64, pOutput);
for ( int nLoop = 0; nLoop 16; nLoop++)
{
cout pOutput[nLoop];
}
cout \n endl;
BIO_free_all(b64);
smime.p7s
Description: S/MIME cryptographic signature
RE: Base64 Help
Visual C++ did not complain nor did it error out when it ran, but you are
correct it does take a BUF_MEM structure. I also added another BIO method to
the code. I also read that section in the book you suggested. I also made
the code simple, but it appears that it still does not give me the base64
encoding. Any suggestions...
int main()
{
BIO *bmem, *b64;
char message[] = Hello World \n;
int written = 0;
b64 = BIO_new(BIO_f_base64());
bmem = BIO_new(BIO_s_mem());
bmem = BIO_push(b64, bmem);
written = BIO_write(b64, message, strlen(message));
cout written endl;
BIO_flush(b64);
BIO_free_all(b64);
}
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Joseph Oreste Bruni
Sent: Thursday, October 13, 2005 2:46 PM
To: openssl-users@openssl.org
Subject: Re: Base64 Help
b64 is a filter BIO, it won't hold on to your data. You need to append a
memory BIO to the back end of the filter bio so that your output can be
accumulated.
There are samples on how to do this in the OpenSSL book as well as a rather
lengthy discussion on BIO's in general.
Also BIO_get_mem_ptr() gives you a pointer to BUF_MEM structure, not a
char*. Your compiler should have yelled at you for that.
On Oct 13, 2005, at 12:41 PM, Adam Jones wrote:
Below is the code I am using to try and test the base64 encode in
openssl. I am using rand to generate a binary and then encoding that
to base64. Instead of using a file, I want to use memory to output the
base64 encoded buffer. This code compiles and runs, but my output
buffer is all 0. Any help would be appreciated. What have I missed?
The variable written does show 16 like it should..help!
#include iostream
#include memory.h
#include evp.h
#include rand.h
#include bio.h
using namespace std;
int main()
{
BIO *b64;
unsigned char *pbuffer = new unsigned char [16]; unsigned char
*pOutput = new unsigned char [100]; int written;
memset(pOutput, '0', 100);
RAND_bytes(pbuffer, 16);
b64 = BIO_new(BIO_f_base64());
written = BIO_write(b64, pbuffer, 16);
cout written endl;
BIO_get_mem_ptr(b64, pOutput);
for ( int nLoop = 0; nLoop 16; nLoop++) { cout pOutput[nLoop];
} cout \n endl;
BIO_free_all(b64);
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you are not the named addressee you should not disseminate, distribute or copy
this e-mail. Please notify the sender immediately by e-mail if you have
received this e-mail by mistake and delete this e-mail from your system. If
you are not the intended recipient you are notified that disclosing, copying,
distributing or taking any action in reliance on the contents of this
information is strictly prohibited.
__
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Automated List Manager [EMAIL PROTECTED]
Re: Base64 Help
Adam Jones wrote:
Visual C++ did not complain nor did it error out when it ran, but you are
correct it does take a BUF_MEM structure. I also added another BIO method to
the code. I also read that section in the book you suggested. I also made
the code simple, but it appears that it still does not give me the base64
encoding. Any suggestions...
int main()
{
BIO *bmem, *b64;
char message[] = Hello World \n;
int written = 0;
b64 = BIO_new(BIO_f_base64());
bmem = BIO_new(BIO_s_mem());
bmem = BIO_push(b64, bmem);
written = BIO_write(b64, message, strlen(message));
cout written endl;
BIO_flush(b64);
BIO_free_all(b64);
}
Take a good look at that code...you create the memory BIO, but then
never bother to use it. Specifically, you probably mean:
b64 = BIO_push(b64, bmem);
--
Thomas Hruska
Shining Light Productions
Home of BMP2AVI, Nuclear Vision, ProtoNova, and Win32 OpenSSL.
http://www.slproweb.com/
Ask me about discounts on any Shining Light Productions product!
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User Support Mailing Listopenssl-users@openssl.org
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Re: Base64 Help
Using VC++ is your first problem... :)
The call to BIO_push is your problem. You overwrite your reference to
the b64 BIO with another reference to the mem BIO. So now, b64 points
to mem.
Do this:
int main()
{
BIO *bmem, *b64;
char message[] = Hello World \n;
int written = 0;
b64 = BIO_new(BIO_f_base64());
bmem = BIO_new_fp(stdout,0);
b64 = BIO_push(b64, bmem);
written = BIO_write(b64, message, strlen(message));
cout written endl;
BIO_flush(b64);
BIO_free_all(b64);
}
This will output your Base64 to stdout. Then if you need to use a mem
BIO just change out the call to what you had, but you'll need to get
pointers to the data to display it (or whatever).
On Oct 13, 2005, at 1:55 PM, Adam Jones wrote:
Visual C++ did not complain nor did it error out when it ran, but
you are
correct it does take a BUF_MEM structure. I also added another BIO
method to
the code. I also read that section in the book you suggested. I
also made
the code simple, but it appears that it still does not give me the
base64
encoding. Any suggestions...
int main()
{
BIO *bmem, *b64;
char message[] = Hello World \n;
int written = 0;
b64 = BIO_new(BIO_f_base64());
bmem = BIO_new(BIO_s_mem());
bmem = BIO_push(b64, bmem);
written = BIO_write(b64, message, strlen(message));
cout written endl;
BIO_flush(b64);
BIO_free_all(b64);
}
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Joseph Oreste
Bruni
Sent: Thursday, October 13, 2005 2:46 PM
To: openssl-users@openssl.org
Subject: Re: Base64 Help
b64 is a filter BIO, it won't hold on to your data. You need to
append a
memory BIO to the back end of the filter bio so that your output
can be
accumulated.
There are samples on how to do this in the OpenSSL book as well as
a rather
lengthy discussion on BIO's in general.
Also BIO_get_mem_ptr() gives you a pointer to BUF_MEM structure,
not a
char*. Your compiler should have yelled at you for that.
On Oct 13, 2005, at 12:41 PM, Adam Jones wrote:
Below is the code I am using to try and test the base64 encode in
openssl. I am using rand to generate a binary and then encoding that
to base64. Instead of using a file, I want to use memory to output
the
base64 encoded buffer. This code compiles and runs, but my output
buffer is all 0. Any help would be appreciated. What have I missed?
The variable written does show 16 like it should..help!
#include iostream
#include memory.h
#include evp.h
#include rand.h
#include bio.h
using namespace std;
int main()
{
BIO *b64;
unsigned char *pbuffer = new unsigned char [16]; unsigned char
*pOutput = new unsigned char [100]; int written;
memset(pOutput, '0', 100);
RAND_bytes(pbuffer, 16);
b64 = BIO_new(BIO_f_base64());
written = BIO_write(b64, pbuffer, 16);
cout written endl;
BIO_get_mem_ptr(b64, pOutput);
for ( int nLoop = 0; nLoop 16; nLoop++) { cout pOutput[nLoop];
} cout \n endl;
BIO_free_all(b64);
Confidentiality Notice:
This e-mail and any files transmitted with it are confidential and
intended solely for the use of the individual or entity to whom
they are addressed. If you are not the named addressee you should
not disseminate, distribute or copy this e-mail. Please notify the
sender immediately by e-mail if you have received this e-mail by
mistake and delete this e-mail from your system. If you are not
the intended recipient you are notified that disclosing, copying,
distributing or taking any action in reliance on the contents of
this information is strictly prohibited.
__
OpenSSL Project http://www.openssl.org
User Support Mailing Listopenssl-users@openssl.org
Automated List Manager [EMAIL PROTECTED]
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