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_publickey 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_publickey, 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]

> openssl_get_publickey 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-----
MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCuI6b3auKaUF 67XLchzhhfnhsw
r3MsxQ3mjJsN7cq96RwIiaUgOtm0revhQB4JX0m1x1uI4GzTev MsRKZepNnt5lvi
UXaZ8ztl4ryvKVzYdqfooJI78jRsP//Ss8gWeq7/No9xTdY9jWUKS6Zw01v6C77h
tCv22DfDf5gGRfcq1wIDAQAB
-----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