2069446 wrote:

> READ DATA
> 
> EVP_EncryptInit(...)
> for(;;)
> {
> EVP_EncryptUpdate(...)
> /* until end of data*/
> }
> 
> EVP_EncryptFinal(...)

If the data can be large something other would be better:

EVP_EncryptInit()

while(Read_Data_Block())
{
   EVP_EncryptUpdate()
}
EVP_EncryptFinal()

> It seems to work good only with some sizes of data blocks.
> Our question;

Only for small blocksizes...
(Meaning: one loop...)

> Encrypt Init has to be called every time we call EncyptUpdate?

No It has te be called once to generate the symetric key...

By

Goetz

-- 
Goetz Babin-Ebell, TC TrustCenter GmbH, http://www.trustcenter.de
Sonninstr. 24-28, 20097 Hamburg, Germany
Tel.: +49-(0)40 80 80 26 -0,  Fax: +49-(0)40 80 80 26 -126
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