Getting public key using openssl_*

[diogoko]

Has anyone been sucessful in getting/reading a RSA or DSA public key
using the openssl functions?

openssl_get_pub lickey should work with PEM files, but it doesn't...

I've tried creating a X.509 certificate, putting the public key in
there and getting it out with openssl_get_pub lickey, but it doesn't
work either...

All I want to do is to decrypt some data using a public key received
from the user. Ideas?

[diogoko]

Re: Getting public key using openssl_*

> openssl_get_pub lickey should work with PEM files, but it doesn't...

Actually it does, if you give it the key in the right format. Something
like:

-----BEGIN PUBLIC KEY-----
MIGfMA0GCSqGSIb 3DQEBAQUAA4GNAD CBiQKBgQCuI6b3a uKaUF67XLchzhhf nhsw
r3MsxQ3mjJsN7cq 96RwIiaUgOtm0re vhQB4JX0m1x1uI4 GzTevMsRKZepNnt 5lvi
UXaZ8ztl4ryvKVz YdqfooJI78jRsP//Ss8gWeq7/No9xTdY9jWUKS6Z w01v6C77h
tCv22DfDf5gGRfc q1wIDAQAB
-----END PUBLIC KEY-----

I managed to create the public key from the private key using the
openssl command line tool:

$ openssl rsa -in private_key -pubout -out public_key