/// <summary>
/// 检查印章匹配[可选-存在Seal.esl则验证，不存在不验证]
/// 验证文件：Doc_0\Signs\Sign_0\Seal.esl、Doc_0\Signs\Sign_0\SignedValue.dat
/// </summary>
private static VerifyResult CheckSealMatch(OfdReader reader, Signature signature)
{
if (signature.SignedInfo.Seal == null)
{
return(VerifyResult.Success);
}
byte[] sesSignatureBin = reader.ReadContent(signature.SignedValue);
SesVersionHolder holder = VersionParser.ParseSignatureVersion(sesSignatureBin);
if (holder.Version == SesVersion.V4)
{
SesSignature v4Signature = SesSignature.GetInstance(holder.Sequence);
SeSeal seal = v4Signature.TbsSign.EsSeal;
byte[] expect = seal.GetDerEncoded();
byte[] sealBytes = reader.ReadContent(signature.SignedInfo.Seal.BaseLoc.Value);
if (!Arrays.AreEqual(expect, sealBytes))
{
return(VerifyResult.SealNotMatch);
}
}
return(VerifyResult.Success);
}
/// <summary>
/// 获取电子印章二进制编码
/// </summary>
/// <returns></returns>
public override byte[] GetSeal()
{
return(_seal.GetDerEncoded());
}