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what is different between 2 command in open ssl tools? openssl genrsa -des3 -out privkey.pem 2048 and openssl genrsa -out privkey.pem 2048?
thanks
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The primary difference between RSA vs ECC certificates is in the encryption strength. Elliptic Curve Cryptography (ECC) provides an equivalent level of encryption strength as RSA (Rivest-Shamir-Adleman) algorithm with a shorter key length.
The RSA algorithm (Rivest-Shamir-Adleman) is the basis of a cryptosystem -- a suite of cryptographic algorithms that are used for specific security services or purposes -- which enables public key encryption and is widely used to secure sensitive data, particularly when it is being sent over an insecure network such as ...
Conclusion. When it comes down to it, the choice is between RSA 2048/4096 and Ed25519 and the trade-off is between performance and compatibility. RSA is universally supported among SSH clients while EdDSA performs much faster and provides the same level of security with significantly smaller keys.
The -des3 option specifies how the private key is encrypted with a password. Without a cipher option, the private key is not encrypted, and no password is required.
Password encryption can protect the private key even when file-system–based access control is circumvented.
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