openssl - How to extract public key from certificate in Mac? -


i given certificate , tried extract public key out of it.

my certificate like

-----begin certificate-----  snfmfgfdgiig .... -----end certificate-----

and saved test.cer.

i have looked online , tried extract public key.

i tried:

openssl x509 -inform pem -in test.cer -pubkey -noout > publickey.pem

but getting

unable load certificate 56091:error:0906d06c:pem routines:pem_read_bio:no start line:/buildroot/library/caches/com.apple.xbs/sources/openssl098/openssl098-59.60.1/src/crypto/pem/pem_lib.c:648:expecting: trusted certificate

i not familiar process , hoping here can me out. much!


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