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openssl summary

openssl is great tool but it is hard to remember its usage ... here is my summary.

PKCS#12 (pfx files)

man page  Wikipedia on PKCS12

Export public key 
openssl pkcs12 -in cert.pfx -clcerts -nokeys -out publicKey.pem

Export private key
openssl pkcs12 -in cert.pfx -nocerts -nodes -out privateKey.pem

X509 (CER files)

man page  Wikipedia on X.509

Dump certificate
openssl x509 -in cert.cer -noout -text

Convert CER to PEM 
openssl x509 -in cert.cer -outform pem -out a.pem

Convert CRL (revocation list file) to PEM format
openssl crl -inform der -in revocationListFile.crl -outform pem -out a.pem


Try to connect over SSL
opeopenssl s_client -connect server:443

Try to ask OCSP question (check if certificate revoced)
openssl ocsp -issuer caCert.cer -cert certToCheck.cer -text -url ocspServerUrl

Understand value of SSLCipherSuite
openssl ciphers -v 'HIGH:MEDIUM:!aNULL:!MD5'


esign said…
It is really amazing! So many new things that I even didn't hear about them. Difficult to follow for a not professional, a private individual. The world goes on progressing by innovating and inventing.
Ziv said…

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