macOS Open SSL RC4

[hiddenpremise]

[edit]PROBLEM SOLVED - thanks chown33[/edit]
I am trying to write a foundation tool using openssl's rc4 cryptography.
I have included libssl.0.9.8.dylib in the project and use a

#include <openssl/rc4.h>

to call the header file that I need. However whenever I try to build, I get an error

Undefined symbols:
  "_RC4_set_key", referenced from:
      _main in sslrc4.o
  "_RC4", referenced from:
      _main in sslrc4.o
ld: symbol(s) not found
collect2: ld returned 1 exit status

. What am I missing, to get use of these functions?

Thanks,
W

 

[chown33]

You need an additional library. Here's how to find it.

Enter these Terminal commands:

nm /usr/lib/* >rc4.txt 2>&1
open rc4.txt

When rc4.txt is open in an editor, find RC4_set_key. Click Find Next until a line like the red-hilited one appears:

[COLOR="Green"]/usr/lib/libcrypto.dylib[/COLOR](rc4_skey.o):
919b9414 T _RC4_options
[COLOR="Red"]919b9424 T _RC4_set_key[/COLOR]
a1951420 D _RC4_version

The 'T' line identifies where the symbol is defined. The name of the lib where it occurs is shown above it (hilited here in green).

 

[hiddenpremise]

Chown33, I again find myself in your debt. Thank you much