# ECCurve Struct

## Definition

Represents an elliptic curve.

`public value class ECCurve`

```
[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]
public struct ECCurve
```

`public struct ECCurve`

```
[<System.Runtime.Versioning.UnsupportedOSPlatform("browser")>]
type ECCurve = struct
```

`type ECCurve = struct`

`Public Structure ECCurve`

- Inheritance

- Attributes

## Remarks

Use the CurveType field to determine whether the curve is a named curve or an explicit curve (either a prime or a characteristic 2 curve).

## Fields

A |
The first coefficient for an explicit curve. |

B |
The second coefficient for an explicit curve. |

Cofactor |
The cofactor of the curve. |

CurveType |
Identifies the composition of the ECCurve object. |

G |
The generator, or base point, for operations on the curve. |

Hash |
The name of the hash algorithm which was used to generate the curve coefficients (A and B) from the Seed under the ANSI X9.62 generation algorithm. Applies only to explicit curves. |

Order |
The order of the curve. Applies only to explicit curves. |

Polynomial |
The curve polynomial. Applies only to characteristic 2 curves. |

Prime |
The prime specifying the base field. Applies only to prime curves. |

Seed |
The seed value for coefficient generation under the ANSI X9.62 generation algorithm. Applies only to explicit curves. |

## Properties

IsCharacteristic2 |
Gets a value that indicates whether the curve type indicates an explicit characteristic 2 curve. |

IsExplicit |
Gets a value that indicates whether the curve type indicates an explicit curve (either prime or characteristic 2). |

IsNamed |
Gets a value that indicates whether the curve type indicates a named curve. |

IsPrime |
Gets a value that indicates whether the curve type indicates an explicit prime curve. |

Oid |
Gets the identifier of a named curve. |

## Methods

CreateFromFriendlyName(String) |
Creates a named curve using the specified friendly name of the identifier. |

CreateFromOid(Oid) |
Creates a named curve using the specified Oid object. |

CreateFromValue(String) |
Creates a named curve using the specified dotted-decimal representation of the identifier. |

Validate() |
Validates the integrity of the current curve. Throws a CryptographicException exception if the structure is not valid. |