public X9Curve( X9FieldID fieldID, Asn1Sequence seq) { if (fieldID == null) { throw new ArgumentNullException("fieldID"); } if (seq == null) { throw new ArgumentNullException("seq"); } this.fieldIdentifier = fieldID.Identifier; if (fieldIdentifier.Equals(X9ObjectIdentifiers.PrimeField)) { BigInteger q = ((DerInteger)fieldID.Parameters).Value; X9FieldElement x9A = new X9FieldElement(q, (Asn1OctetString)seq[0]); X9FieldElement x9B = new X9FieldElement(q, (Asn1OctetString)seq[1]); curve = new FpCurve(q, x9A.Value.ToBigInteger(), x9B.Value.ToBigInteger()); } else { if (fieldIdentifier.Equals(X9ObjectIdentifiers.CharacteristicTwoField)) { // Characteristic two field DerSequence parameters = (DerSequence)fieldID.Parameters; int m = ((DerInteger)parameters[0]).Value.IntValue; DerObjectIdentifier representation = (DerObjectIdentifier)parameters[1]; int k1 = 0; int k2 = 0; int k3 = 0; if (representation.Equals(X9ObjectIdentifiers.TPBasis)) { // Trinomial basis representation k1 = ((DerInteger)parameters[2]).Value.IntValue; } else { // Pentanomial basis representation DerSequence pentanomial = (DerSequence)parameters[2]; k1 = ((DerInteger)pentanomial[0]).Value.IntValue; k2 = ((DerInteger)pentanomial[1]).Value.IntValue; k3 = ((DerInteger)pentanomial[2]).Value.IntValue; } X9FieldElement x9A = new X9FieldElement(m, k1, k2, k3, (Asn1OctetString)seq[0]); X9FieldElement x9B = new X9FieldElement(m, k1, k2, k3, (Asn1OctetString)seq[1]); // TODO Is it possible to get the order (n) and cofactor(h) too? curve = new F2mCurve(m, k1, k2, k3, x9A.Value.ToBigInteger(), x9B.Value.ToBigInteger()); } } if (seq.Count == 3) { seed = ((DerBitString)seq[2]).GetBytes(); } }
public X9Curve( X9FieldID fieldID, Asn1Sequence seq) { if (fieldID == null) throw new ArgumentNullException("fieldID"); if (seq == null) throw new ArgumentNullException("seq"); this.fieldIdentifier = fieldID.Identifier; if (fieldIdentifier.Equals(X9ObjectIdentifiers.PrimeField)) { BigInteger q = ((DerInteger) fieldID.Parameters).Value; X9FieldElement x9A = new X9FieldElement(q, (Asn1OctetString) seq[0]); X9FieldElement x9B = new X9FieldElement(q, (Asn1OctetString) seq[1]); curve = new FpCurve(q, x9A.Value.ToBigInteger(), x9B.Value.ToBigInteger()); } else { if (fieldIdentifier.Equals(X9ObjectIdentifiers.CharacteristicTwoField)) { // Characteristic two field DerSequence parameters = (DerSequence)fieldID.Parameters; int m = ((DerInteger)parameters[0]).Value.IntValue; DerObjectIdentifier representation = (DerObjectIdentifier)parameters[1]; int k1 = 0; int k2 = 0; int k3 = 0; if (representation.Equals(X9ObjectIdentifiers.TPBasis)) { // Trinomial basis representation k1 = ((DerInteger)parameters[2]).Value.IntValue; } else { // Pentanomial basis representation DerSequence pentanomial = (DerSequence) parameters[2]; k1 = ((DerInteger) pentanomial[0]).Value.IntValue; k2 = ((DerInteger) pentanomial[1]).Value.IntValue; k3 = ((DerInteger) pentanomial[2]).Value.IntValue; } X9FieldElement x9A = new X9FieldElement(m, k1, k2, k3, (Asn1OctetString)seq[0]); X9FieldElement x9B = new X9FieldElement(m, k1, k2, k3, (Asn1OctetString)seq[1]); // TODO Is it possible to get the order (n) and cofactor(h) too? curve = new F2mCurve(m, k1, k2, k3, x9A.Value.ToBigInteger(), x9B.Value.ToBigInteger()); } } if (seq.Count == 3) { seed = ((DerBitString) seq[2]).GetBytes(); } }
public X9Curve(X9FieldID fieldID, Asn1Sequence seq) { //IL_000e: Unknown result type (might be due to invalid IL or missing references) //IL_001c: Unknown result type (might be due to invalid IL or missing references) if (fieldID == null) { throw new ArgumentNullException("fieldID"); } if (seq == null) { throw new ArgumentNullException("seq"); } fieldIdentifier = fieldID.Identifier; if (fieldIdentifier.Equals(X9ObjectIdentifiers.PrimeField)) { BigInteger value = ((DerInteger)fieldID.Parameters).Value; X9FieldElement x9FieldElement = new X9FieldElement(value, (Asn1OctetString)seq[0]); X9FieldElement x9FieldElement2 = new X9FieldElement(value, (Asn1OctetString)seq[1]); curve = new FpCurve(value, x9FieldElement.Value.ToBigInteger(), x9FieldElement2.Value.ToBigInteger()); } else if (fieldIdentifier.Equals(X9ObjectIdentifiers.CharacteristicTwoField)) { DerSequence derSequence = (DerSequence)fieldID.Parameters; int intValue = ((DerInteger)derSequence[0]).Value.IntValue; DerObjectIdentifier derObjectIdentifier = (DerObjectIdentifier)derSequence[1]; int num = 0; int k = 0; int k2 = 0; if (derObjectIdentifier.Equals(X9ObjectIdentifiers.TPBasis)) { num = ((DerInteger)derSequence[2]).Value.IntValue; } else { DerSequence derSequence2 = (DerSequence)derSequence[2]; num = ((DerInteger)derSequence2[0]).Value.IntValue; k = ((DerInteger)derSequence2[1]).Value.IntValue; k2 = ((DerInteger)derSequence2[2]).Value.IntValue; } X9FieldElement x9FieldElement3 = new X9FieldElement(intValue, num, k, k2, (Asn1OctetString)seq[0]); X9FieldElement x9FieldElement4 = new X9FieldElement(intValue, num, k, k2, (Asn1OctetString)seq[1]); curve = new F2mCurve(intValue, num, k, k2, x9FieldElement3.Value.ToBigInteger(), x9FieldElement4.Value.ToBigInteger()); } if (seq.Count == 3) { seed = ((DerBitString)seq[2]).GetBytes(); } }
public X9Curve(X9FieldID fieldID, Asn1Sequence seq) { if (fieldID == null) { throw new ArgumentNullException("fieldID"); } if (seq == null) { throw new ArgumentNullException("seq"); } this.fieldIdentifier = fieldID.Identifier; if (this.fieldIdentifier.Equals(X9ObjectIdentifiers.PrimeField)) { BigInteger value = ((DerInteger)fieldID.Parameters).Value; X9FieldElement x9FieldElement = new X9FieldElement(value, (Asn1OctetString)seq[0]); X9FieldElement x9FieldElement2 = new X9FieldElement(value, (Asn1OctetString)seq[1]); this.curve = new FpCurve(value, x9FieldElement.Value.ToBigInteger(), x9FieldElement2.Value.ToBigInteger()); } else if (this.fieldIdentifier.Equals(X9ObjectIdentifiers.CharacteristicTwoField)) { DerSequence derSequence = (DerSequence)fieldID.Parameters; int intValue = ((DerInteger)derSequence[0]).Value.IntValue; DerObjectIdentifier derObjectIdentifier = (DerObjectIdentifier)derSequence[1]; int k = 0; int k2 = 0; int intValue2; if (derObjectIdentifier.Equals(X9ObjectIdentifiers.TPBasis)) { intValue2 = ((DerInteger)derSequence[2]).Value.IntValue; } else { DerSequence derSequence2 = (DerSequence)derSequence[2]; intValue2 = ((DerInteger)derSequence2[0]).Value.IntValue; k = ((DerInteger)derSequence2[1]).Value.IntValue; k2 = ((DerInteger)derSequence2[2]).Value.IntValue; } X9FieldElement x9FieldElement3 = new X9FieldElement(intValue, intValue2, k, k2, (Asn1OctetString)seq[0]); X9FieldElement x9FieldElement4 = new X9FieldElement(intValue, intValue2, k, k2, (Asn1OctetString)seq[1]); this.curve = new F2mCurve(intValue, intValue2, k, k2, x9FieldElement3.Value.ToBigInteger(), x9FieldElement4.Value.ToBigInteger()); } if (seq.Count == 3) { this.seed = ((DerBitString)seq[2]).GetBytes(); } }
public X9Curve(X9FieldID fieldID, Asn1Sequence seq) { if (fieldID == null) { throw new ArgumentNullException("fieldID"); } if (seq == null) { throw new ArgumentNullException("seq"); } this.fieldIdentifier = fieldID.Identifier; if (this.fieldIdentifier.Equals(X9ObjectIdentifiers.PrimeField)) { BigInteger p = ((DerInteger)fieldID.Parameters).Value; X9FieldElement element = new X9FieldElement(p, (Asn1OctetString)seq[0]); X9FieldElement element2 = new X9FieldElement(p, (Asn1OctetString)seq[1]); this.curve = new FpCurve(p, element.Value.ToBigInteger(), element2.Value.ToBigInteger()); } else if (this.fieldIdentifier.Equals(X9ObjectIdentifiers.CharacteristicTwoField)) { DerSequence parameters = (DerSequence)fieldID.Parameters; int intValue = ((DerInteger)parameters[0]).Value.IntValue; DerObjectIdentifier identifier = (DerObjectIdentifier)parameters[1]; int num2 = 0; int num3 = 0; int num4 = 0; if (identifier.Equals(X9ObjectIdentifiers.TPBasis)) { num2 = ((DerInteger)parameters[2]).Value.IntValue; } else { DerSequence sequence2 = (DerSequence)parameters[2]; num2 = ((DerInteger)sequence2[0]).Value.IntValue; num3 = ((DerInteger)sequence2[1]).Value.IntValue; num4 = ((DerInteger)sequence2[2]).Value.IntValue; } X9FieldElement element3 = new X9FieldElement(intValue, num2, num3, num4, (Asn1OctetString)seq[0]); X9FieldElement element4 = new X9FieldElement(intValue, num2, num3, num4, (Asn1OctetString)seq[1]); this.curve = new F2mCurve(intValue, num2, num3, num4, element3.Value.ToBigInteger(), element4.Value.ToBigInteger()); } if (seq.Count == 3) { this.seed = ((DerBitString)seq[2]).GetBytes(); } }