EncryptedPrivateKeyInfoFactory
using Org.BouncyCastle.Asn1;
using Org.BouncyCastle.Asn1.Pkcs;
using Org.BouncyCastle.Asn1.X509;
using Org.BouncyCastle.Crypto;
using Org.BouncyCastle.Security;
using System;
namespace Org.BouncyCastle.Pkcs
{
public sealed class EncryptedPrivateKeyInfoFactory
{
private EncryptedPrivateKeyInfoFactory()
{
}
public static EncryptedPrivateKeyInfo CreateEncryptedPrivateKeyInfo(DerObjectIdentifier algorithm, char[] passPhrase, byte[] salt, int iterationCount, AsymmetricKeyParameter key)
{
return CreateEncryptedPrivateKeyInfo(algorithm.Id, passPhrase, salt, iterationCount, PrivateKeyInfoFactory.CreatePrivateKeyInfo(key));
}
public static EncryptedPrivateKeyInfo CreateEncryptedPrivateKeyInfo(string algorithm, char[] passPhrase, byte[] salt, int iterationCount, AsymmetricKeyParameter key)
{
return CreateEncryptedPrivateKeyInfo(algorithm, passPhrase, salt, iterationCount, PrivateKeyInfoFactory.CreatePrivateKeyInfo(key));
}
public static EncryptedPrivateKeyInfo CreateEncryptedPrivateKeyInfo(string algorithm, char[] passPhrase, byte[] salt, int iterationCount, PrivateKeyInfo keyInfo)
{
IBufferedCipher obj = PbeUtilities.CreateEngine(algorithm) as IBufferedCipher;
if (obj == null)
throw new Exception("Unknown encryption algorithm: " + algorithm);
Asn1Encodable asn1Encodable = PbeUtilities.GenerateAlgorithmParameters(algorithm, salt, iterationCount);
ICipherParameters parameters = PbeUtilities.GenerateCipherParameters(algorithm, passPhrase, asn1Encodable);
obj.Init(true, parameters);
byte[] contents = obj.DoFinal(keyInfo.GetEncoded());
AlgorithmIdentifier encryptionAlgorithm = new AlgorithmIdentifier(PbeUtilities.GetObjectIdentifier(algorithm), asn1Encodable);
DerOctetString encryptedData = DerOctetString.WithContents(contents);
return new EncryptedPrivateKeyInfo(encryptionAlgorithm, encryptedData);
}
public static EncryptedPrivateKeyInfo CreateEncryptedPrivateKeyInfo(DerObjectIdentifier cipherAlgorithm, DerObjectIdentifier prfAlgorithm, char[] passPhrase, byte[] salt, int iterationCount, SecureRandom random, AsymmetricKeyParameter key)
{
return CreateEncryptedPrivateKeyInfo(cipherAlgorithm, prfAlgorithm, passPhrase, salt, iterationCount, random, PrivateKeyInfoFactory.CreatePrivateKeyInfo(key));
}
public static EncryptedPrivateKeyInfo CreateEncryptedPrivateKeyInfo(DerObjectIdentifier cipherAlgorithm, DerObjectIdentifier prfAlgorithm, char[] passPhrase, byte[] salt, int iterationCount, SecureRandom random, PrivateKeyInfo keyInfo)
{
IBufferedCipher cipher = CipherUtilities.GetCipher(cipherAlgorithm);
if (cipher == null)
throw new Exception("Unknown encryption algorithm: " + cipherAlgorithm?.ToString());
Asn1Encodable asn1Encodable = PbeUtilities.GenerateAlgorithmParameters(cipherAlgorithm, prfAlgorithm, salt, iterationCount, random);
ICipherParameters parameters = PbeUtilities.GenerateCipherParameters(PkcsObjectIdentifiers.IdPbeS2, passPhrase, asn1Encodable);
cipher.Init(true, parameters);
byte[] contents = cipher.DoFinal(keyInfo.GetEncoded());
AlgorithmIdentifier encryptionAlgorithm = new AlgorithmIdentifier(PkcsObjectIdentifiers.IdPbeS2, asn1Encodable);
DerOctetString encryptedData = DerOctetString.WithContents(contents);
return new EncryptedPrivateKeyInfo(encryptionAlgorithm, encryptedData);
}
}
}