# Generate Rsa Key Parameters Where

- Generate Rsa Key Parameters Where To Go
- Generate Rsa Key Parameters Where Are You
- Generate Rsa Key Parameters Where To Use

- RSA SecurID, is a two-factor authentication based on something you know (a Passcode or PIN) and something you have (an authenticator such as a keyfob or smartphone RSA application) - providing a much more reliable level of user authentication than only a password.
- How I create RSA key and enable SSH access in Cisco VG202, in a Cisco router I use the next commands(but in a VG not exists): conf t crypto key generate rsa modulus 1024 ip domain-name domain-name ip ssh version 2 ip ssh time-out 120 ip ssh authentication-retries 3 line vty 0 4 transport input telne.

## Definition

Represents the standard parameters for the RSA algorithm.

Before adding a new SSH key to the ssh-agent to manage your keys, you should have checked for existing SSH keys and generated a new SSH key. When adding your SSH key to the agent, use the default macOS ssh-add command, and not an application installed by macports.

### Generate Rsa Key Parameters Where To Go

- Attributes

## Remarks

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}.

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.

### Generate Rsa Key Parameters Where Are You

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.

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 |

### Generate Rsa Key Parameters Where To Use

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

D | Represents the |

DP | Represents the |

DQ | Represents the |

Exponent | Represents the |

InverseQ | Represents the |

Modulus | Represents the |

P | Represents the |

Q | Represents the |