| | | 1 | | using System; |
| | | 2 | | |
| | | 3 | | using Renci.SshNet.Security.Org.BouncyCastle.Utilities; |
| | | 4 | | |
| | | 5 | | namespace Renci.SshNet.Security.Org.BouncyCastle.Math.Field |
| | | 6 | | { |
| | | 7 | | internal class GenericPolynomialExtensionField |
| | | 8 | | : IPolynomialExtensionField |
| | | 9 | | { |
| | | 10 | | protected readonly IFiniteField subfield; |
| | | 11 | | protected readonly IPolynomial minimalPolynomial; |
| | | 12 | | |
| | 0 | 13 | | internal GenericPolynomialExtensionField(IFiniteField subfield, IPolynomial polynomial) |
| | 0 | 14 | | { |
| | 0 | 15 | | this.subfield = subfield; |
| | 0 | 16 | | this.minimalPolynomial = polynomial; |
| | 0 | 17 | | } |
| | | 18 | | |
| | | 19 | | public virtual BigInteger Characteristic |
| | | 20 | | { |
| | 0 | 21 | | get { return subfield.Characteristic; } |
| | | 22 | | } |
| | | 23 | | |
| | | 24 | | public virtual int Dimension |
| | | 25 | | { |
| | 0 | 26 | | get { return subfield.Dimension * minimalPolynomial.Degree; } |
| | | 27 | | } |
| | | 28 | | |
| | | 29 | | public virtual IFiniteField Subfield |
| | | 30 | | { |
| | 0 | 31 | | get { return subfield; } |
| | | 32 | | } |
| | | 33 | | |
| | | 34 | | public virtual int Degree |
| | | 35 | | { |
| | 0 | 36 | | get { return minimalPolynomial.Degree; } |
| | | 37 | | } |
| | | 38 | | |
| | | 39 | | public virtual IPolynomial MinimalPolynomial |
| | | 40 | | { |
| | 0 | 41 | | get { return minimalPolynomial; } |
| | | 42 | | } |
| | | 43 | | |
| | | 44 | | public override bool Equals(object obj) |
| | 0 | 45 | | { |
| | 0 | 46 | | if (this == obj) |
| | 0 | 47 | | { |
| | 0 | 48 | | return true; |
| | | 49 | | } |
| | 0 | 50 | | GenericPolynomialExtensionField other = obj as GenericPolynomialExtensionField; |
| | 0 | 51 | | if (null == other) |
| | 0 | 52 | | { |
| | 0 | 53 | | return false; |
| | | 54 | | } |
| | 0 | 55 | | return subfield.Equals(other.subfield) && minimalPolynomial.Equals(other.minimalPolynomial); |
| | 0 | 56 | | } |
| | | 57 | | |
| | | 58 | | public override int GetHashCode() |
| | 0 | 59 | | { |
| | 0 | 60 | | return subfield.GetHashCode() ^ Integers.RotateLeft(minimalPolynomial.GetHashCode(), 16); |
| | 0 | 61 | | } |
| | | 62 | | } |
| | | 63 | | } |