[EMAIL PROTECTED] wrote: > > Hi, > > I have a simple application which encrypts a piece of text using RSA. > > when I call RSA_public_encrypt, it should return a char * of 256 chars, > right ? The returned char is not 256 chars long. > Wrong its unsigned char * and the actual size depends on the size of the public key. If your public key is 2048 bits you'll get 256 bytes. > I measure with pointer hopping like this > > while (*sp++) > ; > This way it should hop to the end of the unsigned char * and it returns the > pointer value. (I know this works, its tested) > That wont work. The encrypted data can contain embedded zeros. You need to check the return value of RSA_public_encrypt() to get the actual length. Steve. -- Dr Stephen N. Henson. http://www.drh-consultancy.demon.co.uk/ Personal Email: [EMAIL PROTECTED] Senior crypto engineer, Celo Communications: http://www.celocom.com/ Core developer of the OpenSSL project: http://www.openssl.org/ Business Email: [EMAIL PROTECTED] PGP key: via homepage. ______________________________________________________________________ OpenSSL Project http://www.openssl.org User Support Mailing List [EMAIL PROTECTED] Automated List Manager [EMAIL PROTECTED]
