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82 lines
2.4 KiB
82 lines
2.4 KiB
11 months ago
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#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
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#pragma warning disable
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using System;
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using System.IO;
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using BestHTTP.SecureProtocol.Org.BouncyCastle.Asn1;
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using BestHTTP.SecureProtocol.Org.BouncyCastle.Asn1.Pkcs;
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using BestHTTP.SecureProtocol.Org.BouncyCastle.Asn1.X509;
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namespace BestHTTP.SecureProtocol.Org.BouncyCastle.Pkcs
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{
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/**
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* Utility class for reencoding PKCS#12 files to definite length.
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*/
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public class Pkcs12Utilities
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{
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/**
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* Just re-encode the outer layer of the PKCS#12 file to definite length encoding.
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*
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* @param berPKCS12File - original PKCS#12 file
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* @return a byte array representing the DER encoding of the PFX structure
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* @throws IOException
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*/
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public static byte[] ConvertToDefiniteLength(
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byte[] berPkcs12File)
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{
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Pfx pfx = Pfx.GetInstance(berPkcs12File);
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return pfx.GetEncoded(Asn1Encodable.Der);
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}
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/**
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* Re-encode the PKCS#12 structure to definite length encoding at the inner layer
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* as well, recomputing the MAC accordingly.
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*
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* @param berPKCS12File - original PKCS12 file.
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* @param provider - provider to use for MAC calculation.
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* @return a byte array representing the DER encoding of the PFX structure.
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* @throws IOException on parsing, encoding errors.
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*/
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public static byte[] ConvertToDefiniteLength(
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byte[] berPkcs12File,
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char[] passwd)
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{
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Pfx pfx = Pfx.GetInstance(berPkcs12File);
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ContentInfo info = pfx.AuthSafe;
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Asn1OctetString content = Asn1OctetString.GetInstance(info.Content);
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Asn1Object obj = Asn1Object.FromByteArray(content.GetOctets());
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info = new ContentInfo(info.ContentType, new DerOctetString(obj.GetEncoded(Asn1Encodable.Der)));
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MacData mData = pfx.MacData;
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try
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{
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int itCount = mData.IterationCount.IntValue;
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byte[] data = Asn1OctetString.GetInstance(info.Content).GetOctets();
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byte[] res = Pkcs12Store.CalculatePbeMac(
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mData.Mac.AlgorithmID.Algorithm, mData.GetSalt(), itCount, passwd, false, data);
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AlgorithmIdentifier algId = new AlgorithmIdentifier(
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mData.Mac.AlgorithmID.Algorithm, DerNull.Instance);
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DigestInfo dInfo = new DigestInfo(algId, res);
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mData = new MacData(dInfo, mData.GetSalt(), itCount);
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}
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catch (Exception e)
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{
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throw new IOException("error constructing MAC: " + e.ToString());
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}
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pfx = new Pfx(info, mData);
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return pfx.GetEncoded(Asn1Encodable.Der);
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}
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}
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}
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#pragma warning restore
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#endif
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