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How are public/private keys generated?
Public-key algorithms use a public key and a private key. The public key is made available to anyone (often by means of a digital certificate). Computer cryptography uses integers for keys. In some cases keys are randomly generated using a random number generator (RNG) or pseudorandom number generator (PRNG).
Where can I find my private key?
If you have not yet installed your certificate, then the most likely location of your private key is on the computer or server where you generated the key pair and CSR. When you generated the key pair, you saved two files: one that contains the public key and one that contains the private key.
Can a public key be generated from a private key in RSA?
Not in RSA at least, in fact, you can have one public key with several “different” private keys. In RSA the step is to generate the public key first, then generate the private key afterward.
Why are private keys used instead of public keys?
Private keys are generated using the same algorithms that create public keys to create strong keys that are bonded mathematically. One of the unique advantages of asymmetric encryption using public key pairs is the ability to ensure both the security of encrypted messages and the identity of the sender.
How are public and private asymmetric keys generated?
Asymmetric keys can be either stored for use in multiple sessions or generated for one session only. While the public key can be made generally available, the private key should be closely guarded. A public/private key pair is generated whenever a new instance of an asymmetric algorithm class is created.
Can a message be decrypted without the public key?
A message encrypted with the public key cannot be decrypted without using the corresponding private key. The public and private key are not really keys but rather are really large prime numbers that are mathematically related to one another.