You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
468 lines
16 KiB
468 lines
16 KiB
// 大名科技（天津）有限公司版权所有 电话：18020030720 QQ：515096995
|
|
//
|
|
// 此源代码遵循位于源代码树根目录中的 LICENSE 文件的许可证
|
|
|
|
using Org.BouncyCastle.Asn1;
|
|
using Org.BouncyCastle.Asn1.GM;
|
|
using Org.BouncyCastle.Asn1.X9;
|
|
using Org.BouncyCastle.Crypto;
|
|
using Org.BouncyCastle.Crypto.Digests;
|
|
using Org.BouncyCastle.Crypto.Engines;
|
|
using Org.BouncyCastle.Crypto.Generators;
|
|
using Org.BouncyCastle.Crypto.Parameters;
|
|
using Org.BouncyCastle.Math;
|
|
using Org.BouncyCastle.Security;
|
|
using Org.BouncyCastle.Utilities;
|
|
using Org.BouncyCastle.Utilities.Encoders;
|
|
using Org.BouncyCastle.X509;
|
|
|
|
namespace Admin.NET.Core;
|
|
|
|
/**
|
|
*
|
|
* 用BC的注意点：
|
|
* 这个版本的BC对SM3withSM2的结果为asn1格式的r和s，如果需要直接拼接的r||s需要自己转换。下面rsAsn1ToPlainByteArray、rsPlainByteArrayToAsn1就在干这事。
|
|
* 这个版本的BC对SM2的结果为C1||C2||C3，据说为旧标准，新标准为C1||C3||C2，用新标准的需要自己转换。下面（被注释掉的）changeC1C2C3ToC1C3C2、changeC1C3C2ToC1C2C3就在干这事。java版的高版本有加上C1C3C2，csharp版没准以后也会加，但目前还没有，java版的目前可以初始化时“ SM2Engine sm2Engine = new SM2Engine(SM2Engine.Mode.C1C3C2);”。
|
|
*
|
|
*/
|
|
|
|
public class GM
|
|
{
|
|
private static X9ECParameters x9ECParameters = GMNamedCurves.GetByName("sm2p256v1");
|
|
private static ECDomainParameters ecDomainParameters = new(x9ECParameters.Curve, x9ECParameters.G, x9ECParameters.N);
|
|
|
|
/**
|
|
*
|
|
* @param msg
|
|
* @param userId
|
|
* @param privateKey
|
|
* @return r||s，直接拼接byte数组的rs
|
|
*/
|
|
|
|
public static byte[] SignSm3WithSm2(byte[] msg, byte[] userId, AsymmetricKeyParameter privateKey)
|
|
{
|
|
return RsAsn1ToPlainByteArray(SignSm3WithSm2Asn1Rs(msg, userId, privateKey));
|
|
}
|
|
|
|
/**
|
|
* @param msg
|
|
* @param userId
|
|
* @param privateKey
|
|
* @return rs in <b>asn1 format</b>
|
|
*/
|
|
|
|
public static byte[] SignSm3WithSm2Asn1Rs(byte[] msg, byte[] userId, AsymmetricKeyParameter privateKey)
|
|
{
|
|
ISigner signer = SignerUtilities.GetSigner("SM3withSM2");
|
|
signer.Init(true, new ParametersWithID(privateKey, userId));
|
|
signer.BlockUpdate(msg, 0, msg.Length);
|
|
byte[] sig = signer.GenerateSignature();
|
|
return sig;
|
|
}
|
|
|
|
/**
|
|
*
|
|
* @param msg
|
|
* @param userId
|
|
* @param rs r||s，直接拼接byte数组的rs
|
|
* @param publicKey
|
|
* @return
|
|
*/
|
|
|
|
public static bool VerifySm3WithSm2(byte[] msg, byte[] userId, byte[] rs, AsymmetricKeyParameter publicKey)
|
|
{
|
|
if (rs == null || msg == null || userId == null) return false;
|
|
if (rs.Length != RS_LEN * 2) return false;
|
|
return VerifySm3WithSm2Asn1Rs(msg, userId, RsPlainByteArrayToAsn1(rs), publicKey);
|
|
}
|
|
|
|
/**
|
|
*
|
|
* @param msg
|
|
* @param userId
|
|
* @param rs in <b>asn1 format</b>
|
|
* @param publicKey
|
|
* @return
|
|
*/
|
|
|
|
public static bool VerifySm3WithSm2Asn1Rs(byte[] msg, byte[] userId, byte[] sign, AsymmetricKeyParameter publicKey)
|
|
{
|
|
ISigner signer = SignerUtilities.GetSigner("SM3withSM2");
|
|
signer.Init(false, new ParametersWithID(publicKey, userId));
|
|
signer.BlockUpdate(msg, 0, msg.Length);
|
|
return signer.VerifySignature(sign);
|
|
}
|
|
|
|
/**
|
|
* bc加解密使用旧标c1||c2||c3，此方法在加密后调用，将结果转化为c1||c3||c2
|
|
* @param c1c2c3
|
|
* @return
|
|
*/
|
|
|
|
private static byte[] ChangeC1C2C3ToC1C3C2(byte[] c1c2c3)
|
|
{
|
|
int c1Len = (x9ECParameters.Curve.FieldSize + 7) / 8 * 2 + 1; //sm2p256v1的这个固定65。可看GMNamedCurves、ECCurve代码。
|
|
const int c3Len = 32; //new SM3Digest().getDigestSize();
|
|
byte[] result = new byte[c1c2c3.Length];
|
|
Buffer.BlockCopy(c1c2c3, 0, result, 0, c1Len); //c1
|
|
Buffer.BlockCopy(c1c2c3, c1c2c3.Length - c3Len, result, c1Len, c3Len); //c3
|
|
Buffer.BlockCopy(c1c2c3, c1Len, result, c1Len + c3Len, c1c2c3.Length - c1Len - c3Len); //c2
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* bc加解密使用旧标c1||c3||c2，此方法在解密前调用，将密文转化为c1||c2||c3再去解密
|
|
* @param c1c3c2
|
|
* @return
|
|
*/
|
|
|
|
private static byte[] ChangeC1C3C2ToC1C2C3(byte[] c1c3c2)
|
|
{
|
|
int c1Len = (x9ECParameters.Curve.FieldSize + 7) / 8 * 2 + 1; //sm2p256v1的这个固定65。可看GMNamedCurves、ECCurve代码。
|
|
const int c3Len = 32; //new SM3Digest().GetDigestSize();
|
|
byte[] result = new byte[c1c3c2.Length];
|
|
Buffer.BlockCopy(c1c3c2, 0, result, 0, c1Len); //c1: 0->65
|
|
Buffer.BlockCopy(c1c3c2, c1Len + c3Len, result, c1Len, c1c3c2.Length - c1Len - c3Len); //c2
|
|
Buffer.BlockCopy(c1c3c2, c1Len, result, c1c3c2.Length - c3Len, c3Len); //c3
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* c1||c3||c2
|
|
* @param data
|
|
* @param key
|
|
* @return
|
|
*/
|
|
|
|
public static byte[] Sm2Decrypt(byte[] data, AsymmetricKeyParameter key)
|
|
{
|
|
return Sm2DecryptOld(ChangeC1C3C2ToC1C2C3(data), key);
|
|
}
|
|
|
|
/**
|
|
* c1||c3||c2
|
|
* @param data
|
|
* @param key
|
|
* @return
|
|
*/
|
|
|
|
public static byte[] Sm2Encrypt(byte[] data, AsymmetricKeyParameter key)
|
|
{
|
|
return ChangeC1C2C3ToC1C3C2(Sm2EncryptOld(data, key));
|
|
}
|
|
|
|
/**
|
|
* c1||c2||c3
|
|
* @param data
|
|
* @param key
|
|
* @return
|
|
*/
|
|
|
|
public static byte[] Sm2EncryptOld(byte[] data, AsymmetricKeyParameter pubkey)
|
|
{
|
|
SM2Engine sm2Engine = new SM2Engine();
|
|
sm2Engine.Init(true, new ParametersWithRandom(pubkey, new SecureRandom()));
|
|
return sm2Engine.ProcessBlock(data, 0, data.Length);
|
|
}
|
|
|
|
/**
|
|
* c1||c2||c3
|
|
* @param data
|
|
* @param key
|
|
* @return
|
|
*/
|
|
|
|
public static byte[] Sm2DecryptOld(byte[] data, AsymmetricKeyParameter key)
|
|
{
|
|
SM2Engine sm2Engine = new SM2Engine();
|
|
sm2Engine.Init(false, key);
|
|
return sm2Engine.ProcessBlock(data, 0, data.Length);
|
|
}
|
|
|
|
/**
|
|
* @param bytes
|
|
* @return
|
|
*/
|
|
|
|
public static byte[] Sm3(byte[] bytes)
|
|
{
|
|
SM3Digest digest = new();
|
|
digest.BlockUpdate(bytes, 0, bytes.Length);
|
|
byte[] result = DigestUtilities.DoFinal(digest);
|
|
return result;
|
|
}
|
|
|
|
private const int RS_LEN = 32;
|
|
|
|
private static byte[] BigIntToFixexLengthBytes(BigInteger rOrS)
|
|
{
|
|
// for sm2p256v1, n is 00fffffffeffffffffffffffffffffffff7203df6b21c6052b53bbf40939d54123,
|
|
// r and s are the result of mod n, so they should be less than n and have length<=32
|
|
byte[] rs = rOrS.ToByteArray();
|
|
if (rs.Length == RS_LEN) return rs;
|
|
else if (rs.Length == RS_LEN + 1 && rs[0] == 0) return Arrays.CopyOfRange(rs, 1, RS_LEN + 1);
|
|
else if (rs.Length < RS_LEN)
|
|
{
|
|
byte[] result = new byte[RS_LEN];
|
|
Arrays.Fill(result, (byte)0);
|
|
Buffer.BlockCopy(rs, 0, result, RS_LEN - rs.Length, rs.Length);
|
|
return result;
|
|
}
|
|
else
|
|
{
|
|
throw new ArgumentException("err rs: " + Hex.ToHexString(rs));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* BC的SM3withSM2签名得到的结果的rs是asn1格式的，这个方法转化成直接拼接r||s
|
|
* @param rsDer rs in asn1 format
|
|
* @return sign result in plain byte array
|
|
*/
|
|
|
|
private static byte[] RsAsn1ToPlainByteArray(byte[] rsDer)
|
|
{
|
|
Asn1Sequence seq = Asn1Sequence.GetInstance(rsDer);
|
|
byte[] r = BigIntToFixexLengthBytes(DerInteger.GetInstance(seq[0]).Value);
|
|
byte[] s = BigIntToFixexLengthBytes(DerInteger.GetInstance(seq[1]).Value);
|
|
byte[] result = new byte[RS_LEN * 2];
|
|
Buffer.BlockCopy(r, 0, result, 0, r.Length);
|
|
Buffer.BlockCopy(s, 0, result, RS_LEN, s.Length);
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* BC的SM3withSM2验签需要的rs是asn1格式的，这个方法将直接拼接r||s的字节数组转化成asn1格式
|
|
* @param sign in plain byte array
|
|
* @return rs result in asn1 format
|
|
*/
|
|
|
|
private static byte[] RsPlainByteArrayToAsn1(byte[] sign)
|
|
{
|
|
if (sign.Length != RS_LEN * 2) throw new ArgumentException("err rs. ");
|
|
BigInteger r = new BigInteger(1, Arrays.CopyOfRange(sign, 0, RS_LEN));
|
|
BigInteger s = new BigInteger(1, Arrays.CopyOfRange(sign, RS_LEN, RS_LEN * 2));
|
|
Asn1EncodableVector v = new Asn1EncodableVector
|
|
{
|
|
new DerInteger(r),
|
|
new DerInteger(s)
|
|
};
|
|
|
|
return new DerSequence(v).GetEncoded("DER");
|
|
}
|
|
|
|
// 生成公私匙对
|
|
public static AsymmetricCipherKeyPair GenerateKeyPair()
|
|
{
|
|
ECKeyPairGenerator kpGen = new();
|
|
kpGen.Init(new ECKeyGenerationParameters(ecDomainParameters, new SecureRandom()));
|
|
return kpGen.GenerateKeyPair();
|
|
}
|
|
|
|
public static ECPrivateKeyParameters GetPrivatekeyFromD(BigInteger d)
|
|
{
|
|
return new ECPrivateKeyParameters(d, ecDomainParameters);
|
|
}
|
|
|
|
public static ECPublicKeyParameters GetPublickeyFromXY(BigInteger x, BigInteger y)
|
|
{
|
|
return new ECPublicKeyParameters(x9ECParameters.Curve.CreatePoint(x, y), ecDomainParameters);
|
|
}
|
|
|
|
public static AsymmetricKeyParameter GetPublickeyFromX509File(FileInfo file)
|
|
{
|
|
FileStream fileStream = null;
|
|
try
|
|
{
|
|
//file.DirectoryName + "\\" + file.Name
|
|
fileStream = new FileStream(file.FullName, FileMode.Open, FileAccess.Read);
|
|
X509Certificate certificate = new X509CertificateParser().ReadCertificate(fileStream);
|
|
return certificate.GetPublicKey();
|
|
}
|
|
catch (Exception)
|
|
{
|
|
//log.Error(file.Name + "读取失败，异常：" + e);
|
|
}
|
|
finally
|
|
{
|
|
if (fileStream != null)
|
|
fileStream.Close();
|
|
}
|
|
return null;
|
|
}
|
|
|
|
public class Sm2Cert
|
|
{
|
|
public AsymmetricKeyParameter privateKey;
|
|
public AsymmetricKeyParameter publicKey;
|
|
public string certId;
|
|
}
|
|
|
|
private static byte[] ToByteArray(int i)
|
|
{
|
|
byte[] byteArray = new byte[4];
|
|
byteArray[0] = (byte)(i >> 24);
|
|
byteArray[1] = (byte)((i & 0xFFFFFF) >> 16);
|
|
byteArray[2] = (byte)((i & 0xFFFF) >> 8);
|
|
byteArray[3] = (byte)(i & 0xFF);
|
|
return byteArray;
|
|
}
|
|
|
|
/**
|
|
* 字节数组拼接
|
|
*
|
|
* @param params
|
|
* @return
|
|
*/
|
|
|
|
private static byte[] Join(params byte[][] byteArrays)
|
|
{
|
|
List<byte> byteSource = new();
|
|
for (int i = 0; i < byteArrays.Length; i++)
|
|
{
|
|
byteSource.AddRange(byteArrays[i]);
|
|
}
|
|
byte[] data = byteSource.ToArray();
|
|
return data;
|
|
}
|
|
|
|
/**
|
|
* 密钥派生函数
|
|
*
|
|
* @param Z
|
|
* @param klen
|
|
* 生成klen字节数长度的密钥
|
|
* @return
|
|
*/
|
|
|
|
private static byte[] KDF(byte[] Z, int klen)
|
|
{
|
|
int ct = 1;
|
|
int end = (int)Math.Ceiling(klen * 1.0 / 32);
|
|
List<byte> byteSource = new();
|
|
|
|
for (int i = 1; i < end; i++)
|
|
{
|
|
byteSource.AddRange(Sm3(Join(Z, ToByteArray(ct))));
|
|
ct++;
|
|
}
|
|
byte[] last = Sm3(Join(Z, ToByteArray(ct)));
|
|
if (klen % 32 == 0)
|
|
{
|
|
byteSource.AddRange(last);
|
|
}
|
|
else
|
|
byteSource.AddRange(Arrays.CopyOfRange(last, 0, klen % 32));
|
|
return byteSource.ToArray();
|
|
}
|
|
|
|
public static byte[] Sm4DecryptCBC(byte[] keyBytes, byte[] cipher, byte[] iv, string algo)
|
|
{
|
|
if (keyBytes.Length != 16) throw new ArgumentException("err key length");
|
|
if (cipher.Length % 16 != 0 && algo.Contains("NoPadding")) throw new ArgumentException("err data length");
|
|
|
|
KeyParameter key = ParameterUtilities.CreateKeyParameter("SM4", keyBytes);
|
|
IBufferedCipher c = CipherUtilities.GetCipher(algo);
|
|
if (iv == null) iv = ZeroIv(algo);
|
|
c.Init(false, new ParametersWithIV(key, iv));
|
|
return c.DoFinal(cipher);
|
|
}
|
|
|
|
public static byte[] Sm4EncryptCBC(byte[] keyBytes, byte[] plain, byte[] iv, string algo)
|
|
{
|
|
if (keyBytes.Length != 16) throw new ArgumentException("err key length");
|
|
if (plain.Length % 16 != 0 && algo.Contains("NoPadding")) throw new ArgumentException("err data length");
|
|
|
|
KeyParameter key = ParameterUtilities.CreateKeyParameter("SM4", keyBytes);
|
|
IBufferedCipher c = CipherUtilities.GetCipher(algo);
|
|
if (iv == null) iv = ZeroIv(algo);
|
|
c.Init(true, new ParametersWithIV(key, iv));
|
|
return c.DoFinal(plain);
|
|
}
|
|
|
|
public static byte[] Sm4EncryptECB(byte[] keyBytes, byte[] plain, string algo)
|
|
{
|
|
if (keyBytes.Length != 16) throw new ArgumentException("err key length");
|
|
//NoPadding 的情况下需要校验数据长度是16的倍数.
|
|
if (plain.Length % 16 != 0 && algo.Contains("NoPadding")) throw new ArgumentException("err data length");
|
|
|
|
KeyParameter key = ParameterUtilities.CreateKeyParameter("SM4", keyBytes);
|
|
IBufferedCipher c = CipherUtilities.GetCipher(algo);
|
|
c.Init(true, key);
|
|
return c.DoFinal(plain);
|
|
}
|
|
|
|
public static byte[] Sm4DecryptECB(byte[] keyBytes, byte[] cipher, string algo)
|
|
{
|
|
if (keyBytes.Length != 16) throw new ArgumentException("err key length");
|
|
if (cipher.Length % 16 != 0 && algo.Contains("NoPadding")) throw new ArgumentException("err data length");
|
|
|
|
KeyParameter key = ParameterUtilities.CreateKeyParameter("SM4", keyBytes);
|
|
IBufferedCipher c = CipherUtilities.GetCipher(algo);
|
|
c.Init(false, key);
|
|
return c.DoFinal(cipher);
|
|
}
|
|
|
|
public const string SM4_ECB_NOPADDING = "SM4/ECB/NoPadding";
|
|
public const string SM4_CBC_NOPADDING = "SM4/CBC/NoPadding";
|
|
public const string SM4_CBC_PKCS7PADDING = "SM4/CBC/PKCS7Padding";
|
|
|
|
/**
|
|
* cfca官网CSP沙箱导出的sm2文件
|
|
* @param pem 二进制原文
|
|
* @param pwd 密码
|
|
* @return
|
|
*/
|
|
|
|
public static Sm2Cert ReadSm2File(byte[] pem, string pwd)
|
|
{
|
|
Sm2Cert sm2Cert = new();
|
|
|
|
Asn1Sequence asn1Sequence = (Asn1Sequence)Asn1Object.FromByteArray(pem);
|
|
// ASN1Integer asn1Integer = (ASN1Integer) asn1Sequence.getObjectAt(0); //version=1
|
|
Asn1Sequence priSeq = (Asn1Sequence)asn1Sequence[1];//private key
|
|
Asn1Sequence pubSeq = (Asn1Sequence)asn1Sequence[2];//public key and x509 cert
|
|
|
|
// ASN1ObjectIdentifier sm2DataOid = (ASN1ObjectIdentifier) priSeq.getObjectAt(0);
|
|
// ASN1ObjectIdentifier sm4AlgOid = (ASN1ObjectIdentifier) priSeq.getObjectAt(1);
|
|
Asn1OctetString priKeyAsn1 = (Asn1OctetString)priSeq[2];
|
|
byte[] key = KDF(System.Text.Encoding.UTF8.GetBytes(pwd), 32);
|
|
byte[] priKeyD = Sm4DecryptCBC(Arrays.CopyOfRange(key, 16, 32),
|
|
priKeyAsn1.GetOctets(),
|
|
Arrays.CopyOfRange(key, 0, 16), SM4_CBC_PKCS7PADDING);
|
|
sm2Cert.privateKey = GetPrivatekeyFromD(new BigInteger(1, priKeyD));
|
|
// log.Info(Hex.toHexString(priKeyD));
|
|
|
|
// ASN1ObjectIdentifier sm2DataOidPub = (ASN1ObjectIdentifier) pubSeq.getObjectAt(0);
|
|
Asn1OctetString pubKeyX509 = (Asn1OctetString)pubSeq[1];
|
|
X509Certificate x509 = new X509CertificateParser().ReadCertificate(pubKeyX509.GetOctets());
|
|
sm2Cert.publicKey = x509.GetPublicKey();
|
|
sm2Cert.certId = x509.SerialNumber.ToString(10); //这里转10进制，有啥其他进制要求的自己改改
|
|
return sm2Cert;
|
|
}
|
|
|
|
/**
|
|
*
|
|
* @param cert
|
|
* @return
|
|
*/
|
|
|
|
public static Sm2Cert ReadSm2X509Cert(byte[] cert)
|
|
{
|
|
Sm2Cert sm2Cert = new();
|
|
|
|
X509Certificate x509 = new X509CertificateParser().ReadCertificate(cert);
|
|
sm2Cert.publicKey = x509.GetPublicKey();
|
|
sm2Cert.certId = x509.SerialNumber.ToString(10); //这里转10进制，有啥其他进制要求的自己改改
|
|
return sm2Cert;
|
|
}
|
|
|
|
public static byte[] ZeroIv(string algo)
|
|
{
|
|
IBufferedCipher cipher = CipherUtilities.GetCipher(algo);
|
|
int blockSize = cipher.GetBlockSize();
|
|
byte[] iv = new byte[blockSize];
|
|
Arrays.Fill(iv, (byte)0);
|
|
return iv;
|
|
}
|
|
}
|