Actually SE050 supports ISO14443/NFC interface, no need to use NTAG 5 family to act as a bridge. If you have SE050ARD demo board, you may configure it as below to enable the CL interface.

What is the scenario for your application? what kind of cryptographic operations do you want to use based on SE050? Would you please clarify?
Thanks for your patience!
Have a great day,
Kan
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