RSAKey (msg=None, data=None, filename=None, password=None, key=None, fileobj=None) ¶ Representation of an RSA key which can be used to sign and verify SSH2 data. Static generate (bits, progressfunc=None) ¶ Generate a new private RSA key. This factory function can be used to generate a new host key or authentication key.
-->Definition
Allows specific implementations of RSA to be instantiated.
Overloads
| Create() | Creates an instance of the default implementation of the RSA algorithm. |
| Create(Int32) | Creates a new ephemeral RSA key with the specified key size. |
| Create(RSAParameters) | Creates a new ephemeral RSA key with the specified RSA key parameters. |
| Create(String) | Creates an instance of the specified implementation of RSA. |
Creates an instance of the default implementation of the RSA algorithm.
Returns
A new instance of the default implementation of RSA.
See also
Creates a new ephemeral RSA key with the specified key size.
Parameters
Returns
A new ephemeral RSA key with the specified key size.
Exceptions
keySizeInBits is not supported by the default implementation.
Creates a new ephemeral RSA key with the specified RSA key parameters.
Parameters
- parameters
- RSAParameters
The parameters for the RSA algorithm.
Returns
A new ephemeral RSA key.
Exceptions
parameters does not represent a valid RSA key.
See also
Creates an instance of the specified implementation of RSA.
Parameters
- algName
- String
The name of the implementation of RSA to use.
Returns
A new instance of the specified implementation of RSA.
See also
Applies to
-->Definition
Represents the standard parameters for the RSA algorithm.
- Attributes
Remarks
Generate Rsa Key Pair
The RSA class exposes an ExportParameters method that enables you to retrieve the raw RSA key in the form of an RSAParameters structure. Understanding the contents of this structure requires familiarity with how the RSA algorithm works. The next section discusses the algorithm briefly.
RSA Algorithm
To generate a key pair, you start by creating two large prime numbers named p and q. These numbers are multiplied and the result is called n. Because p and q are both prime numbers, the only factors of n are 1, p, q, and n.
If we consider only numbers that are less than n, the count of numbers that are relatively prime to n, that is, have no factors in common with n, equals (p - 1)(q - 1).
Now you choose a number e, which is relatively prime to the value you calculated. The public key is now represented as {e, n}.
Generating etc rndc.key bind pdf. To create the private key, you must calculate d, which is a number such that (d)(e) mod (p - 1)(q - 1) = 1. In accordance with the Euclidean algorithm, the private key is now {d, n}.
Encryption of plaintext m to ciphertext c is defined as c = (m ^ e) mod n. Decryption would then be defined as m = (c ^ d) mod n.
Summary of Fields
Section A.1.2 of the PKCS #1: RSA Cryptography Standard on the RSA Laboratories Web site defines a format for RSA private keys.
The following table summarizes the fields of the RSAParameters structure. The third column provides the corresponding field in section A.1.2 of PKCS #1: RSA Cryptography Standard.
Apr 05, 2018 From the top-level in IIS Manager, select “Server Certificates”. Then click the “Create” on the right. This will create a self-signed certificate valid for a year with a private key. It is only for. Generate certificate with private key online free. Self-Signed Certificate Generator. Self-signed ssl certificates can be used to set up temporary ssl servers. You can use it for test and development servers where security is not a big concern. Use the form below to generate a self-signed ssl certificate and key. Jun 09, 2019 Certificates, and then click Refresh. The certificate now has an associated private key. You can now use the IIS MMC to assign the recovered keyset (certificate) to the Web site that you want. Generate online private and public key for ssh, putty, github, bitbucket Save both of keys on your computer (text file, dropbox, evernote etc)!!! The generated keys are RANDOM and CAN'T be restored.
| RSAParameters field | Contains | Corresponding PKCS #1 field |
|---|---|---|
| D | d, the private exponent | privateExponent |
| DP | d mod (p - 1) | exponent1 |
| DQ | d mod (q - 1) | exponent2 |
| Exponent | e, the public exponent | publicExponent |
| InverseQ | (InverseQ)(q) = 1 mod p | coefficient |
| Modulus | n | modulus |
| P | p | prime1 |
| Q | q | prime2 |
The security of RSA derives from the fact that, given the public key { e, n }, it is computationally infeasible to calculate d, either directly or by factoring n into p and q. Therefore, any part of the key related to d, p, or q must be kept secret. If you call
ExportParameters and ask for only the public key information, this is why you will receive only Exponent and Modulus. The other fields are available only if you have access to the private key, and you request it.
RSAParameters is not encrypted in any way, so you must be careful when you use it with the private key information. In fact, none of the fields that contain private key information can be serialized. If you try to serialize an RSAParameters structure with a remoting call or by using one of the serializers, you will receive only public key information. If you want to pass private key information, you will have to manually send that data. In all cases, if anyone can derive the parameters, the key that you transmit becomes useless.
.NET Core 2.1.0 and later: The serialization restrictions have been removed and all members of RSAParameters are serialized. Care must be excercised when writing or upgrading code against .NET Core 2.1.0 or later, because if anyone can derive or intercept the private key parameters the key and all the information encrypted or signed with it are compromised.
Fields
Generate Rsa Public Key
| D | Represents the |
| DP | Represents the |
| DQ | Represents the |
| Exponent | Represents the |
| InverseQ | Represents the |
| Modulus | Represents the |
| P | Represents the |
| Q | Represents the |