crypto.ko module problem

[aram baghomian]

Hi

If you can remember i wanted to add my custom hash algorithm to the opencrypto project, after i added it 
and compile my kernel source( by your advise),i load the crypto.ko module using kldload and give this error.

link_elf: symbol MYHASHUpdate undefined

MYHASHUpdate is one of my hash functions that i add to the source.

what should i do that i forget?