On Wed, Dec 28, 2011, Ireneusz Szcze??niak wrote: > Hi, > > In public key cryptography, a message encrypted with a private key > can be decrypted with a public key, and so I tried: > > openssl rsautl -encrypt -inkey private-key -in message -out cryptogram > > openssl rsautl -decrypt -inkey public-key -pubin -in cryptogram > > The problem is that the second command gives me: > > A private key is needed for this operation > > Why can't one decrypt with a public key? > > I do realize that I can convince the recipient of the message that > the message is indeed mine by signing the message. > >
Try the -sign and -verify options instead. Steve. -- Dr Stephen N. Henson. OpenSSL project core developer. Commercial tech support now available see: http://www.openssl.org ______________________________________________________________________ OpenSSL Project http://www.openssl.org User Support Mailing List openssl-users@openssl.org Automated List Manager majord...@openssl.org
