1 files changed, 131 insertions, 0 deletions
diff --git a/crypto/src/asn1/pkcs/RSAPrivateKeyStructure.cs b/crypto/src/asn1/pkcs/RSAPrivateKeyStructure.cs
new file mode 100644
index 000000000..dbb07c744
--- /dev/null
+++ b/crypto/src/asn1/pkcs/RSAPrivateKeyStructure.cs
@@ -0,0 +1,131 @@
+using System;
+using System.Collections;
+
+using Org.BouncyCastle.Asn1;
+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 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;
+        }
+
+		public 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));
+        }
+    }
+}