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

2008-04-13 Thread Marek . Marcola
Hello, > One thing I will conform you is " we can not get public key from a private key ". I do > not remember where i studied , but it is true. > So do not try to get a public key from private key. This is not true. Best regards, -- Marek Marcola <[EMAIL PROTECTED]> _

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

2008-04-13 Thread Th�nh Trung Nguyễn
Thanks ! I forgot the FAQ, sorry ! "Dr. Stephen Henson" <[EMAIL PROTECTED]> wrote: On Sat, Apr 12, 2008, Thnh Trung Nguyễn wrote: > Hi ! > > I used PEM_write_RSAPrivateKey() to write private key to a pem file. > Then I used PEM_read_RSAPublicKey() to read public key from that file, but it

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

2008-04-13 Thread Dr. Stephen Henson
On Sat, Apr 12, 2008, Thnh Trung Nguyễn wrote: > Hi ! > > I used PEM_write_RSAPrivateKey() to write private key to a pem file. > Then I used PEM_read_RSAPublicKey() to read public key from that file, but it > returned an error. > The ERR_error_string() only return message like : > error:0906

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

2008-04-13 Thread Th�nh Trung Nguyễn
Hi shankar, Thanks you for your answer ! You said " we can not get public key from a private key ". Then you said "So PEM_read_RSAPublicKey() or PEM_read_RSA_PUBKEY() can be used to load public key from a private key" I'm being confused. Did you mean we those 2 functions can not be use to load

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

2008-04-12 Thread shankar ks
Hi Trung, One thing I will conform you is " we can not get public key from a private key ". I do not remember where i studied , but it is true. So do not try to get a public key from private key. And I have mistakenly typed as BEGIN RSA CERTIFICATE , as you told it is BEGIN RSA PUBLIC KEY only. S

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

2008-04-12 Thread Th�nh Trung Nguyễn
Thank you for fast response ! But it's ok if I use PEM_read_RSAPublicKey() to load public key from file save by using PEM_write_RSAPublicKey(). And even publickey extract by openssl command doesn't have any line as "BEGIN RSA CERTIFICATE". It just has line as "BEGIN RSA PUBLIC KEY". I've tried

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

2008-04-12 Thread shankar ks
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 giv

Can PEM_read_RSAPublicKey() load public key from private key ?

2008-04-12 Thread Th�nh Trung Nguyễn
Hi ! I used PEM_write_RSAPrivateKey() to write private key to a pem file. Then I used PEM_read_RSAPublicKey() to read public key from that file, but it returned an error. The ERR_error_string() only return message like : error:0906D06C:lib(9):func(109):reason(108) So can any one tell me can i