Package org.bouncycastle.math.ec.custom.sec

## Class SecP256R1Curve

- java.lang.Object
- - org.bouncycastle.math.ec.ECCurve
  - - org.bouncycastle.math.ec.ECCurve.AbstractFp
    - - org.bouncycastle.math.ec.custom.sec.SecP256R1Curve

-     public class SecP256R1Curve
      extends ECCurve.AbstractFp

- - ### Nested Class Summary

    - ### Nested classes/interfaces inherited from class org.bouncycastle.math.ec.ECCurve

      `ECCurve.AbstractF2m, ECCurve.AbstractFp, ECCurve.Config, ECCurve.F2m, ECCurve.Fp`

  - ### Field Summary

    Fields
    Modifier and Type | Field | Description
    --- | --- | ---
    `protected SecP256R1Point` | `infinity` |
    `static java.math.BigInteger` | `q` |

    - ### Fields inherited from class org.bouncycastle.math.ec.ECCurve

      `a, b, cofactor, coord, COORD_AFFINE, COORD_HOMOGENEOUS, COORD_JACOBIAN, COORD_JACOBIAN_CHUDNOVSKY, COORD_JACOBIAN_MODIFIED, COORD_LAMBDA_AFFINE, COORD_LAMBDA_PROJECTIVE, COORD_SKEWED, endomorphism, field, multiplier, order`

  - ### Constructor Summary

    Constructors
    Constructor | Description
    --- | ---
    `SecP256R1Curve()` |

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `protected ECCurve` | `cloneCurve()` |
    `ECLookupTable` | `createCacheSafeLookupTable​(ECPoint[] points, int off, int len)` | Create a cache-safe lookup table for the specified sequence of points.
    `protected ECPoint` | `createRawPoint​(ECFieldElement x, ECFieldElement y)` |
    `protected ECPoint` | `createRawPoint​(ECFieldElement x, ECFieldElement y, ECFieldElement[] zs)` |
    `ECFieldElement` | `fromBigInteger​(java.math.BigInteger x)` |
    `int` | `getFieldSize()` |
    `ECPoint` | `getInfinity()` |
    `java.math.BigInteger` | `getQ()` |
    `ECFieldElement` | `randomFieldElement​(java.security.SecureRandom r)` |
    `ECFieldElement` | `randomFieldElementMult​(java.security.SecureRandom r)` |
    `boolean` | `supportsCoordinateSystem​(int coord)` |

    - ### Methods inherited from class org.bouncycastle.math.ec.ECCurve.AbstractFp

      `decompressPoint, isValidFieldElement`

    - ### Methods inherited from class org.bouncycastle.math.ec.ECCurve

      `checkPoint, checkPoints, checkPoints, configure, createDefaultMultiplier, createPoint, decodePoint, equals, equals, getA, getAllCoordinateSystems, getB, getCofactor, getCoordinateSystem, getEndomorphism, getField, getMultiplier, getOrder, getPreCompInfo, hashCode, importPoint, normalizeAll, normalizeAll, precompute, validatePoint`

    - ### Methods inherited from class java.lang.Object

      `clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait`

- - ### Field Detail

    - #### q

          public static final java.math.BigInteger q

    - #### infinity

          protected SecP256R1Point infinity

  - ### Constructor Detail

    - #### SecP256R1Curve

          public SecP256R1Curve()

  - ### Method Detail

    - #### cloneCurve

          protected ECCurve cloneCurve()

      Specified by:
        `cloneCurve` in class `ECCurve`

    - #### supportsCoordinateSystem

          public boolean supportsCoordinateSystem​(int coord)

      Overrides:
        `supportsCoordinateSystem` in class `ECCurve`

    - #### getQ

          public java.math.BigInteger getQ()

    - #### getFieldSize

          public int getFieldSize()

      Specified by:
        `getFieldSize` in class `ECCurve`

    - #### fromBigInteger

          public ECFieldElement fromBigInteger​(java.math.BigInteger x)

      Specified by:
        `fromBigInteger` in class `ECCurve`

    - #### createRawPoint

          protected ECPoint createRawPoint​(ECFieldElement x,
                                           ECFieldElement y)

      Specified by:
        `createRawPoint` in class `ECCurve`

    - #### createRawPoint

          protected ECPoint createRawPoint​(ECFieldElement x,
                                           ECFieldElement y,
                                           ECFieldElement[] zs)

      Specified by:
        `createRawPoint` in class `ECCurve`

    - #### getInfinity

          public ECPoint getInfinity()

      Specified by:
        `getInfinity` in class `ECCurve`

    - #### createCacheSafeLookupTable

          public ECLookupTable createCacheSafeLookupTable​(ECPoint[] points,
                                                          int off,
                                                          int len)

      Description copied from class: `ECCurve`
      Create a cache-safe lookup table for the specified sequence of points. All the points MUST belong to this `ECCurve` instance, and MUST already be normalized.
      Overrides:
        `createCacheSafeLookupTable` in class `ECCurve`

    - #### randomFieldElement

          public ECFieldElement randomFieldElement​(java.security.SecureRandom r)

      Overrides:
        `randomFieldElement` in class `ECCurve.AbstractFp`

    - #### randomFieldElementMult

          public ECFieldElement randomFieldElementMult​(java.security.SecureRandom r)

      Overrides:
        `randomFieldElementMult` in class `ECCurve.AbstractFp`