linux - what is the meaning of key size of cipher -


what key size or key length of cipher , , heard 128 bit key, 1024 bit rsa key , mean?

for suppose there 1024 bit key , thought 1024 means number of bits required store key , right?

and have public , private keys ( ssl keys ) , how can find key size of certs ( public key , private key). there linux tool find key size?

all explained here: http://en.wikipedia.org/wiki/key_size.

to check key size of cert can use example openssl:

openssl x509 -in your_cert_in_pem_format.crt.pem -noout -text


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