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Debug Server Certificate from Client

19 Hits, Last modified: 11 years ago

3/14/checking-a-remote-certificate-chain-with-openssl/| Checking A Remote Certificate Chain With OpenSSL]]" from [[http://langui.sh/|langui.sh]]. openssl s_client -showcerts -connect www.andunix.net:443 ... nformations about the used arguments from the OpenSSL man page: * ''[[http://www.openssl.org/docs/ap

Generate a Test Key

17 Hits, Last modified: 10 years ago

====== Generate a Test Key ====== openssl req -x509 -nodes -days 365 -newkey rsa:2048 -keyout testke... nformations about the used arguments from the OpenSSL man page: * ''[[http://www.openssl.org/docs/apps/req.html|req]]'': PKCS#10 certificate request and ... ficate generating utility. * ''[[http://www.openssl.org/docs/apps/req.html#item__x509|-x509]]'': this

Compare a Key with its Certificate

15 Hits, Last modified: 12 years ago

to have the same "modulus" and "exponent". openssl x509 -noout -text -in server.crt openssl rsa -noout -text -in server.key The exponent is quite alwa... 7. So we only need to compare the modulus. openssl x509 -noout -modulus -in server.crt openssl rsa -noout -modulus -in server.key Example: <file> $ o

Print Information about a Key

8 Hits, Last modified: 10 years ago

===== Print Information about a Key ====== openssl x509 -inform DER -in testkey.cer -noout -text Informations about the used arguments from the OpenSSL man page: * ''[[http://www.openssl.org/docs/apps/x509.html|x509]]'': Certificate display and signing utility. * ''[[http://www.openssl.org/docs/apps/x509.html#item__inform|-inform DER]

Print all certificates in a file

7 Hits, Last modified: 12 years ago

store each certificate in a single file. openssl pkcs7 -in file.pem -print_certs -out certs.pem I... nformations about the used arguments from the OpenSSL man page: * ''[[http://www.openssl.org/docs/apps/pkcs7.html|pkcs7]]'': PKCS#7 utility * ''[[http://www.openssl.org/docs/apps/pkcs7.html#item__in|-in file.pem]]'

Print Information about a Certificate

7 Hits, Last modified: 9 years ago

int Information about a Certificate ====== openssl x509 -in testkey.crt -noout -text Informations about the used arguments from the OpenSSL man page: * ''[[http://www.openssl.org/docs/apps/x509.html|x509]]'': Certificate display and signing utility. * ''[[http://www.openssl.org/docs/apps/x509.html#item__in|-in testkey.crt]

Convert a Key

4 Hits, Last modified: 6 years ago

cert.pem'' and ''key.pem'' to ''key.p12'': openssl pkcs12 -export -in cert.pem -inkey key.pem -out k... ficate with the complete certificate chain: openssl pkcs12 -in testkey.p12 -out testkey.pem -nokeys Export the certificate only: openssl pkcs12 -in testkey.p12 -out testkey.pem -nokeys -clcerts {{tag>openssl security cryptography key howto}}

Convert a Certificate

3 Hits, Last modified: 10 years ago

ate ====== ===== Convert DER to PEM ===== openssl x509 -inform der -in testkey.der -out testkey.pem ===== Convert PEM to DER ===== openssl x509 -outform der -in testkey.pem -out testkey.der {{tag>openssl security cryptography certificate howto}}

Download a Server Certificate

2 Hits, Last modified: 10 years ago

rtificate chain from the server: <code bash> openssl s_client -showcerts -connect www.example.org:443 ... binary DER format see [[convert_certificate]]. {{tag>openssl security cryptography certificate howto}}

Print Information about a Signature

2 Hits, Last modified: 10 years ago

rmation about a Signature ====== <code bash> openssl pkcs7 -in signature.p7s -text -inform DER -print_certs -noout </code> {{tag> cryptography, howto, openssl, security}}

OpenSSL

2 Hits, Last modified: 12 years ago

====== OpenSSL ====== {{indexmenu>.}} {{tag>cryptography howto guide openssl security}}