| # Generate Private Key and Certificate using RSA 256 encryption (4096-bit key) |
| openssl req -x509 -newkey rsa:4096 -keyout privatekey.pem -out certificate.pem -days 365 |
| # Alternatively, setting the '-newkey' parameter to 'rsa:2048' will generate a 2048-bit key. |
| # Generate PKCS#12 (P12) file for cert; combines both key and certificate together |
| openssl pkcs12 -export -inkey privatekey.pem -in certificate.pem -out cert.pfx |
| # Generate SHA256 Fingerprint for Certificate and export to a file |
| openssl x509 -noout -fingerprint -sha256 -inform pem -in certificate.pem >> fingerprint.txt |
| # Generate SHA1 Fingerprint for Certificate and export to a file |
| #openssl x509 -noout -fingerprint -sha1 -inform pem -in certificate.pem >> fingerprint.txt |
| # FYI, it's best practice to use SHA256 instead of SHA1 for better security, but this shows how to do it if you REALLY need to. |
Use Openssl To Generate Key Pair
commented Nov 7, 2019
Here's a couple useful links related to this: |
To generate a 256-bit key, a cryptographic module could use a source of entropy to generate random bits, or it could accept a pass phrase and use an extra computational step to derive the 256-bit key from a pass phrase or other input. Oct 09, 2019 Unless you have special requirements, generate a 2048-bit key. The key's algorithm identifier is rsaEncryption (1.2.840.113549.1.1.1), which is the most interoperable form. Almost all software will accept keys marked as such for use in RSA encryption and for RSA PKCS#1 1.5 signatures and RSA-PSS signatures.
Openssl Generate Rsa Private Key
256 Bit Encryption
Encryption Key Generator. The all-in-one ultimate online toolbox that generates all kind of keys! Every coder needs All Keys Generator in its favorites! It is provided for free and only supported by ads and donations. 64-bit 128-bit 256-bit 512-bit 1024-bit 2048-bit 4096-bit. Yes How many? To generate such a key, use OpenSSL as: openssl rand 16 myaes.key AES-256 expects a key of 256 bit, 32 byte. To generate such a key, use: openssl rand 32 myaes.key – ingenue Oct 12 '17 at 11:57.
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