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();
}
}
