OpenSSL unable to load Public Key

Question

Trying to encrypt a text message via command line on OSX Yosomite 10.10.2

Created public .pem key like this:

ssh-keygen -f ~/.ssh/id_rsa.pub         


        

Answer 1

Still don't know what went wrong in my question but found a solution:

1) Generate RSA key:

$ openssl genrsa -out key.pem 1024 
$ openssl rsa -in key.pem -text -noout 

2) Save public key in pub.pem file:

$ openssl rsa -in key.pem -pubout -out pub.pem 
$ openssl rsa -in pub.pem -pubin -text -noout 

3) Encrypt some data:

$ echo test test test > file.txt 
$ openssl rsautl -encrypt -inkey pub.pem -pubin -in file.txt -out file.bin 

4) Decrypt encrypted data:

$ openssl rsautl -decrypt -inkey key.pem -in file.bin 

It works like a charm

Thanks to Marek Marcola for providing the information http://openssl.6102.n7.nabble.com/Re-Can-I-use-my-own-keys-with-openssl-for-RSA-enc-dec-td12506.html