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using System;
using Org.BouncyCastle.Math;
namespace Org.BouncyCastle.Asn1.Pkcs
{
public class RsaPrivateKeyStructure
: Asn1Encodable
{
private readonly BigInteger modulus;
private readonly BigInteger publicExponent;
private readonly BigInteger privateExponent;
private readonly BigInteger prime1;
private readonly BigInteger prime2;
private readonly BigInteger exponent1;
private readonly BigInteger exponent2;
private readonly BigInteger coefficient;
public static RsaPrivateKeyStructure GetInstance(Asn1TaggedObject obj, bool isExplicit)
{
return GetInstance(Asn1Sequence.GetInstance(obj, isExplicit));
}
public static RsaPrivateKeyStructure GetInstance(object obj)
{
if (obj == null)
return null;
if (obj is RsaPrivateKeyStructure)
return (RsaPrivateKeyStructure)obj;
return new RsaPrivateKeyStructure(Asn1Sequence.GetInstance(obj));
}
public RsaPrivateKeyStructure(
BigInteger modulus,
BigInteger publicExponent,
BigInteger privateExponent,
BigInteger prime1,
BigInteger prime2,
BigInteger exponent1,
BigInteger exponent2,
BigInteger coefficient)
{
this.modulus = modulus;
this.publicExponent = publicExponent;
this.privateExponent = privateExponent;
this.prime1 = prime1;
this.prime2 = prime2;
this.exponent1 = exponent1;
this.exponent2 = exponent2;
this.coefficient = coefficient;
}
private RsaPrivateKeyStructure(Asn1Sequence seq)
{
BigInteger version = ((DerInteger)seq[0]).Value;
if (version.IntValue != 0)
throw new ArgumentException("wrong version for RSA private key");
modulus = ((DerInteger)seq[1]).Value;
publicExponent = ((DerInteger)seq[2]).Value;
privateExponent = ((DerInteger)seq[3]).Value;
prime1 = ((DerInteger)seq[4]).Value;
prime2 = ((DerInteger)seq[5]).Value;
exponent1 = ((DerInteger)seq[6]).Value;
exponent2 = ((DerInteger)seq[7]).Value;
coefficient = ((DerInteger)seq[8]).Value;
}
public BigInteger Modulus
{
get { return modulus; }
}
public BigInteger PublicExponent
{
get { return publicExponent; }
}
public BigInteger PrivateExponent
{
get { return privateExponent; }
}
public BigInteger Prime1
{
get { return prime1; }
}
public BigInteger Prime2
{
get { return prime2; }
}
public BigInteger Exponent1
{
get { return exponent1; }
}
public BigInteger Exponent2
{
get { return exponent2; }
}
public BigInteger Coefficient
{
get { return coefficient; }
}
/**
* This outputs the key in Pkcs1v2 format.
* <pre>
* RsaPrivateKey ::= Sequence {
* version Version,
* modulus Integer, -- n
* publicExponent Integer, -- e
* privateExponent Integer, -- d
* prime1 Integer, -- p
* prime2 Integer, -- q
* exponent1 Integer, -- d mod (p-1)
* exponent2 Integer, -- d mod (q-1)
* coefficient Integer -- (inverse of q) mod p
* }
*
* Version ::= Integer
* </pre>
* <p>This routine is written to output Pkcs1 version 0, private keys.</p>
*/
public override Asn1Object ToAsn1Object()
{
return new DerSequence(
new DerInteger(0), // version
new DerInteger(Modulus),
new DerInteger(PublicExponent),
new DerInteger(PrivateExponent),
new DerInteger(Prime1),
new DerInteger(Prime2),
new DerInteger(Exponent1),
new DerInteger(Exponent2),
new DerInteger(Coefficient));
}
}
}
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