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Re: Api's to know the file is signed or encrypted with PKCS7

: On Sun, Apr 20, 2008, shankar ks wrote: Hi all, I am signing and encrypting a file using PKCS7 Api's . I know that file has beec signed and encrypted.. but other person on receiving side how can he knows that the file has been signed and encrypted ? Is there any Api is there by which

how to know the flags of pkcs7_sign at receieing side

Hi .. When we sign a file using pkcs7_sign with the given set of flags , how does the receiver know and have to use the appropriate flag for verification .. -- --Best Regards Shankar

Re: how to know the flags of pkcs7_sign at receieing side

Am 21.04.2008 um 20:32 schrieb shankar ks: Hi .. When we sign a file using pkcs7_sign with the given set of flags , how does the receiver know and have to use the appropriate flag for verification .. -- --Best Regards Shankar

Api's to know the file is signed or encrypted with PKCS7

Hi all, I am signing and encrypting a file using PKCS7 Api's . I know that file has beec signed and encrypted.. but other person on receiving side how can he knows that the file has been signed and encrypted ? Is there any Api is there by which we can find out whether the file is signed or

which Asymetic algorithem that pkcs7_sign and pkcs_encrypt

Hi , Do any one have an idea of which algorithems that pkcs7_sign and pkcs_encrypt Api's will use internally. I wanted to use only Rsa Algorithems for signing and encryption. but not sure about how to set those Rsa algorithem before calling sign and encrypt functions. -- --Best Regards Shankar

Max size support of PKCS7 Api's

Hi , can any one knows what Max size of data or file can be signed or encrypted using PKCS7_sign() and PKCS_encrypt funtions. If my file is a size of one GB (or 100 gb)can this funtions work properly with out any errors , or do I need to use low level funtions. -- --Best Regards Shankar

problem with PKCS7_decrypt

Hi , I have encrypted the data using pkcs7_encrypt and stored the content in one file . and I called the same file as a input for the decrypt using pkcs7_decrypt Api and copied the data to a file . then if i open the output file, i have the orginal data which i encrypted . but the problem is on

How to implement compression as a CMS package in 0.9.7e version

Hi , Can Any one knows how to implement compression (zlib ) as a CMS Enveolpe data in SSL version 0.9.7e( we have resitricted to this version only). -- --Best Regards Shankar

Re: Can PEM_read_RSAPublicKey() load public key from private key ?

Hi Trung, The error which u got was you can not read the public key as in the certificate it is not finding the lines as BEGIN RSA CERTIFICATE so here i am giving you the code , use it directly , it will work fine as i refined it many times ... and one more thing is error string funtion will give

Re: Can PEM_read_RSAPublicKey() load public key from private key ?

. p/s : I used openssl to extract publickey like this ( I don't know if there is another way) : openssl rsa -in privatekey.pem -out publickey.pem -pubout *shankar ks [EMAIL PROTECTED]* wrote: Hi Trung, The error which u got was you can not read the public key as in the certificate

compression as a CMS package in 0.9.8

Hi EveryBody, I want to know a small hint on compression as a CMS package in 0.9.8 and later versions . Here my concern is we can compress the data using zlib funtions , but how we can implement the same as CMS envelope. Is there any Api's are there for CMS compression ? Thanks in Advance --

Re: PKCS#7 Api's help (Plz help me)

, however, the above is how I'd go about tackling your problem). Have fun. Patrick. shankar ks wrote: Hi Every body, Please help me for the following information . I am working on securtiy issues ,I have to sign, compress, encrypty the file as CMS package. In order to fullfill

PKCS#7 Api's help (Plz help me)

Hi Every body, Please help me for the following information . I am working on securtiy issues ,I have to sign, compress, encrypty the file as CMS package. In order to fullfill conditions I have to use pkcs7 API's ( in C - Program). Let me give you some brief on my work : I have a file , I need

Re: Public/private key encryption/decryption

Hi Till, The error u got is you can not read the public key as in the certificate it is not finding the lines as BEGIN RSA CERTIFICATE so here i am giving you the code , use it directly , it will work fine as i refined it many times ... pubk = RSA_new(); if(pubk == NULL) printf(error to create

Re: openssl/crypto/cms/

, shankar ks [EMAIL PROTECTED] wrote: Hi Hobblet, Sorry for the late reply as I was busy with searching of other things . You have given a command regarding my question, but i did not understand that and how to use it to get the information of CMS from openssl CVS. I am not aware of using

CMS_EnvelopedData

Hi , I want to use the cms fuctions in my application program ( which is in C - language), my goal is to sign the document using the RSA_sign function then want to envelope the signature with the original data . so can any one explain me how to envelope this using CMS funtions . and also how to

pkcs#7 Api's in openssl

Hi Every body, I am working on securtiy issues , my job is sign, compress, encrypty the file as CMS package. In order to fullfill conditions I have to use pkcs7 API's . but I did not understand how they will envelope the signed , compressed , encrypted data , and how they will be usefull for

Re: openssl/crypto/cms/

of the CMS from this CVS on to my windows system and implement that in the OVMS system. As i down loaded the 0.9.8e but I did not find any file like /crypto/cms .. Thanks in advance --Shankar On 4/2/08, Ger Hobbelt [EMAIL PROTECTED] wrote: On Wed, Apr 2, 2008 at 5:26 AM, shankar ks [EMAIL

CMS usage

Hi steve , I am trying to find out the source code for CMS in openssl , I have done signing, compression, encryption of my data using Openssl API's in C programing language.. Now I need to inplement all those signing , compression, encryption data as a CMS package. I have reffered to the CVS of

Re: CMS usage with OpenSSl

enveloping format i.e as a CMS package. here we are not understand how to implement the CMS package and struck... Best Regards --Shankar On 4/1/08, Dr. Stephen Henson [EMAIL PROTECTED] wrote: On Tue, Apr 01, 2008, shankar ks wrote: Hi Stephen, ThanQ for your

CMS usage with OpenSSl

Hi all/ I am shiva, working on security issues using Openssl Api's. Our requirement is we need to Sign the file, compress the file , encrypt the file as a CMS(crypto graphic message syntax) package. I am able to do the signing, compression, encryption using the OpenSSl Api's in C language. But

Re: CMS usage with OpenSSl

tell me the right version, but this is how we did it. Best regards Frank -- *Von:* [EMAIL PROTECTED] [mailto: [EMAIL PROTECTED] *Im Auftrag von *shankar ks *Gesendet:* Dienstag, 1. April 2008 11:36 *An:* openssl-users@openssl.org *Betreff:* CMS usage

Re: CMS usage with OpenSSl

suggest me to do what explained in my earlier mail... Does the TLS will support the CMS ? --Best Regards Shankar On 4/1/08, Dr. Stephen Henson [EMAIL PROTECTED] wrote: On Tue, Apr 01, 2008, shankar ks wrote: Hi all/ I am shiva, working on security issues using Openssl Api's. Our requirement

Re: CMS usage with OpenSSl

the CMS package and struck... Best Regards --Shankar On 4/1/08, Dr. Stephen Henson [EMAIL PROTECTED] wrote: On Tue, Apr 01, 2008, shankar ks wrote: Hi Stephen, ThanQ for your information. let me conform your information as : CMS is still under development and there is no document

openssl/crypto/cms/

*Hi all,* ** *When i refer to the Openssl CVS, I did not find the file related to* *openssl/crypto/cms/ , * All files in this folder are showing the difference , but not the exact files... where can i get the cms files. and one more thing is i downloaded the OpenSSl kit of 0.9.8f version, but i