Java Development

[icastillo]

Hi folks,

Somebody has used the CMSSignedDataOuputStream class?

This is my problem, I have been trying to generate a document CMS with a parallel signatures.

I just can get signature over signature, (I think this schema is called "signatures in serial")

I have spent too much time to figure out how to get it.

Any idea?, Please Help Me.

[icastillo]

Hi,

Does anybody have been experienced the same problem?

Or any suggestion where i can find more information about this topic?

Please, help me.

Thanks for your time.

ICL

[tbilisoft]

Check the links below:

http://www.openscdp.org/scsh3/cmssigneddata.html

http://bouncycastle.gva.es/www.bouncycastle.org/docs/mdocs1.3/org/bouncycastle/cms/CMSSignedData.htm...

http://www.ceenet.org/workshops/lectures2000/Wolfgang_Schneider/ceenet-schneider/sld077.htm

http://books.google.ru/books?id=WLLAD2FKH3IC&pg=PA320&lpg=PA320&dq=CMSSignedData&source=bl&ots=O9Fmq...

Hope this helps

[icastillo]

Thanks to Tbilisoft Team, 

I have looked the hyperlinks that you have posted, those one have been useful to me.  

But I have one question. It is possible to generate an Encapsulated Signed Data using the CMS from BB APIs? 

Graphically this is what i want:

                           |-------------|

         |-----------|     | Signed-data |

Data-----|Signed-Data|     ||-----------||

         |Generator  |-----||   Data    ||

Signer---|           |     ||-----------||

         |-----------|     |             |

                           ||-----------||

                           ||Signature-1||

                           ||-----------||

                           ||Signature-2||

                           ||-----------||

                           ||Signature-n||

                           ||-----------||

                           |-------------|

So, each signer signs the same encapsulatedContentInfo (Data section on the graphic).

I have got this with Bouncy Castle, but any idea on How can I get the same approach on BB?.

Thanks for your time, I really appreciate it.

ICL

[tbilisoft]

I am sorry, but I have no experience in this field. So I cannot give you a useful advice.

[icastillo]

Oh! Thanks anyway! Tbilisoft.

Somebody has an idea?

Maybe it is a basic question for experts.

Could help me an expert from RIM or BlackBerry APIs, please?

If it is so basic, only tell me if I can reach the approach shown in the graphic (above) using the CMS package.

Thanks for your time.

ICL

[cruser11232]

Hi all,

Sorry for opening the older post. But i face a similar kind of a problem. I have signed a data using the keys in the keystore in the blackberry phone.

Now i need to pack the signed data into a PKCS7 format signature file. (normal signed data type, no parallel or other types of signatures). Is it possible to do it with CMS API provided by blackberry or should i go for Bouncy castle APIS.  Any sample implementations or any pointers could be of great help

thanks and regards

Charley

[AnisimovSPB]

ByteArrayOutputStream baos = new ByteArrayOutputStream();
Base64OutputStream b64Os = new Base64OutputStream(baos);
CMSSignedDataOutputStream cos = new CMSSignedDataOutputStream(b64Os, CMSContentTypes.DATA, true, true, true);
SignatureSigner signer = SignatureSignerFactory.getInstance(yourPrivateKey, yourSignatureAlgorithm);
CMSSigner cmsSigner = new CMSSigner(signer, yourCertificate);

cos.addSigner(cmsSigner);

MIMEOutputStream mos = new MIMEOutputStream(cos, false, MIMEOutputStream.ENCODING_7BIT);
try {

    mos.setContentType("text/plain; charset=iso-8859-1");
    mos.write(yourData, 0, yourData.length);
} finally {

    mos.close();
}
byte[] pkcs7Bytes = baos.toByteArray();