C# 常用的加密代码参考
2021-06-28 04:06
标签：col ref stat jdk byte 非对称 close als enc 1、MD5加密 2、 SHA_1加密 3、对称加密示例 4、非对称加密 C# 常用的加密代码参考 标签：col ref stat jdk byte 非对称 close als enc 原文地址：https://www.cnblogs.com/sjzww/p/10050906.html 1 public static string EncryptString(string source)
2 {
3 string result;
4 if (source == string.Empty || source == null)
5 {
6 result = string.Empty;
7 }
8 else
9 {
10 Encoding utf = new UTF8Encoding();
11 byte[] bytes = utf.GetBytes(source);
12 MD5 md5 = new MD5CryptoServiceProvider();
13 result = Convert.ToBase64String(md5.ComputeHash(bytes));
14 }
15 return result;
16 }
1 public static string EncryptString(string source)
2 {
3 string result;
4 if (source == "" || source == string.Empty || source == null)
5 {
6 result = source;
7 }
8 else
9 {
10 Encoding utf = new UTF8Encoding();
11 byte[] bytes = utf.GetBytes(source);
12 SHA1 sha = new SHA1CryptoServiceProvider();
13 result = Convert.ToBase64String(sha.ComputeHash(bytes));
14 }
15 return result;
16 }
1 private static readonly string key = "sajdkfj";
2
3 private static readonly byte[] iv = new byte[]
4 {
5 7,
6 8,
7 9,
8 4,
9 5,
10 3,
11 2,
12 1
13 };
14
15 public static string EncryptString(string source)
16 {
17 string result;
18 if (source == string.Empty || source == null)
19 {
20 result = source;
21 }
22 else
23 {
24 Encoding utf = new UTF8Encoding();
25 DESCryptoServiceProvider des = new DESCryptoServiceProvider();
26 ICryptoTransform encrpt = des.CreateEncryptor(utf.GetBytes(SymmetricEncryption.key), SymmetricEncryption.iv);
27 byte[] byteMessage = utf.GetBytes(source);
28 byte[] byteEncrpt = encrpt.TransformFinalBlock(byteMessage, 0, byteMessage.Length);
29 result = Convert.ToBase64String(byteEncrpt);
30 }
31 return result;
32 }
33
34 public static string DecryptString(string source)
35 {
36 Encoding utf = new UTF8Encoding();
37 DESCryptoServiceProvider des = new DESCryptoServiceProvider();
38 ICryptoTransform decrpt = des.CreateDecryptor(utf.GetBytes(SymmetricEncryption.key), SymmetricEncryption.iv);
39 byte[] byteEncrypt = Convert.FromBase64String(source);
40 byte[] byteDecrypt = decrpt.TransformFinalBlock(byteEncrypt, 0, byteEncrypt.Length);
41 return utf.GetString(byteDecrypt);
42 }
1 public const string PUBLIC_KEY = "sdfasdfjsldkjfljLKjlkjaslkdj";
2
3 public void RSAKey(out string privateKeys, out string publicKey)
4 {
5 RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
6 privateKeys = rsa.ToXmlString(true);
7 publicKey = rsa.ToXmlString(false);
8 }
9
10 public string RSAEncrypt(string publicKey, string strEncryptString)
11 {
12 byte[] plainTextBArray = new UnicodeEncoding().GetBytes(strEncryptString);
13 return this.RSAEncrypt(publicKey, plainTextBArray);
14 }
15
16 public string RSAEncrypt(string publicKey, byte[] encryptString)
17 {
18 RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
19 rsa.FromXmlString(publicKey);
20 int keySize = rsa.KeySize / 8;
21 int bufferSize = keySize - 11;
22 byte[] buffer = new byte[bufferSize];
23 MemoryStream msInput = new MemoryStream(encryptString);
24 MemoryStream msOutput = new MemoryStream();
25 for (int readLen = msInput.Read(buffer, 0, bufferSize); readLen > 0; readLen = msInput.Read(buffer, 0, bufferSize))
26 {
27 byte[] dataToEnc = new byte[readLen];
28 Array.Copy(buffer, 0, dataToEnc, 0, readLen);
29 byte[] encData = rsa.Encrypt(dataToEnc, false);
30 msOutput.Write(encData, 0, encData.Length);
31 }
32 msInput.Close();
33 byte[] cypherTextBArray = msOutput.ToArray();
34 msOutput.Close();
35 rsa.Clear();
36 return Convert.ToBase64String(cypherTextBArray);
37 }
38
39 public string RSADecrypt(string privateKey, string strDecryptString)
40 {
41 byte[] plainTextBArray = Convert.FromBase64String(strDecryptString);
42 return this.RSADecrypt(privateKey, plainTextBArray);
43 }
44
45 public string RSADecrypt(string privateKey, byte[] decryptString)
46 {
47 RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
48 rsa.FromXmlString(privateKey);
49 int keySize = rsa.KeySize / 8;
50 byte[] buffer = new byte[keySize];
51 MemoryStream msInput = new MemoryStream(decryptString);
52 MemoryStream msOutput = new MemoryStream();
53 for (int readLen = msInput.Read(buffer, 0, keySize); readLen > 0; readLen = msInput.Read(buffer, 0, keySize))
54 {
55 byte[] dataToDec = new byte[readLen];
56 Array.Copy(buffer, 0, dataToDec, 0, readLen);
57 byte[] decData = rsa.Decrypt(dataToDec, false);
58 msOutput.Write(decData, 0, decData.Length);
59 }
60 msInput.Close();
61 byte[] dypherTextBArray = msOutput.ToArray();
62 msOutput.Close();
63 rsa.Clear();
64 return new UnicodeEncoding().GetString(dypherTextBArray);
65 }
66
67 public bool GetHash(string strSource, ref byte[] HashData)
68 {
69 HashAlgorithm MD5 = HashAlgorithm.Create("MD5");
70 byte[] Buffer = Encoding.GetEncoding("GB2312").GetBytes(strSource);
71 HashData = MD5.ComputeHash(Buffer);
72 return true;
73 }
74
75 public string GetHash(string strSource)
76 {
77 HashAlgorithm MD5 = HashAlgorithm.Create("MD5");
78 byte[] Buffer = Encoding.GetEncoding("GB2312").GetBytes(strSource);
79 byte[] HashData = MD5.ComputeHash(Buffer);
80 return Convert.ToBase64String(HashData);
81 }
82
83 public void SignatureFormatter(string p_strKeyPrivate, byte[] HashbyteSignature, out byte[] EncryptedSignatureData)
84 {
85 RSACryptoServiceProvider RSA = new RSACryptoServiceProvider();
86 RSA.FromXmlString(p_strKeyPrivate);
87 RSAPKCS1SignatureFormatter RSAFormatter = new RSAPKCS1SignatureFormatter(RSA);
88 RSAFormatter.SetHashAlgorithm("MD5");
89 EncryptedSignatureData = RSAFormatter.CreateSignature(HashbyteSignature);
90 }
91
92 public void SignatureFormatter(string p_strKeyPrivate, byte[] HashbyteSignature, out string m_strEncryptedSignatureData)
93 {
94 RSACryptoServiceProvider RSA = new RSACryptoServiceProvider();
95 RSA.FromXmlString(p_strKeyPrivate);
96 RSAPKCS1SignatureFormatter RSAFormatter = new RSAPKCS1SignatureFormatter(RSA);
97 RSAFormatter.SetHashAlgorithm("MD5");
98 byte[] EncryptedSignatureData = RSAFormatter.CreateSignature(HashbyteSignature);
99 m_strEncryptedSignatureData = Convert.ToBase64String(EncryptedSignatureData);
100 }
101
102 public void SignatureFormatter(string p_strKeyPrivate, string m_strHashbyteSignature, out byte[] EncryptedSignatureData)
103 {
104 byte[] HashbyteSignature = Convert.FromBase64String(this.GetHash(m_strHashbyteSignature));
105 RSACryptoServiceProvider RSA = new RSACryptoServiceProvider();
106 RSA.FromXmlString(p_strKeyPrivate);
107 RSAPKCS1SignatureFormatter RSAFormatter = new RSAPKCS1SignatureFormatter(RSA);
108 RSAFormatter.SetHashAlgorithm("MD5");
109 EncryptedSignatureData = RSAFormatter.CreateSignature(HashbyteSignature);
110 }
111
112 public void SignatureFormatter(string p_strKeyPrivate, string m_strHashbyteSignature, out string m_strEncryptedSignatureData)
113 {
114 byte[] HashbyteSignature = Convert.FromBase64String(this.GetHash(m_strHashbyteSignature));
115 RSACryptoServiceProvider RSA = new RSACryptoServiceProvider();
116 RSA.FromXmlString(p_strKeyPrivate);
117 RSAPKCS1SignatureFormatter RSAFormatter = new RSAPKCS1SignatureFormatter(RSA);
118 RSAFormatter.SetHashAlgorithm("MD5");
119 byte[] EncryptedSignatureData = RSAFormatter.CreateSignature(HashbyteSignature);
120 m_strEncryptedSignatureData = Convert.ToBase64String(EncryptedSignatureData);
121 }
122
123 public bool SignatureDeformatter(string p_strKeyPublic, byte[] HashbyteDeformatter, byte[] DeformatterData)
124 {
125 RSACryptoServiceProvider RSA = new RSACryptoServiceProvider();
126 RSA.FromXmlString(p_strKeyPublic);
127 RSAPKCS1SignatureDeformatter RSADeformatter = new RSAPKCS1SignatureDeformatter(RSA);
128 RSADeformatter.SetHashAlgorithm("MD5");
129 return RSADeformatter.VerifySignature(HashbyteDeformatter, DeformatterData);
130 }
131
132 public bool SignatureDeformatter(string p_strKeyPublic, string p_strHashbyteDeformatter, byte[] DeformatterData)
133 {
134 byte[] HashbyteDeformatter = Convert.FromBase64String(this.GetHash(p_strHashbyteDeformatter));
135 RSACryptoServiceProvider RSA = new RSACryptoServiceProvider();
136 RSA.FromXmlString(p_strKeyPublic);
137 RSAPKCS1SignatureDeformatter RSADeformatter = new RSAPKCS1SignatureDeformatter(RSA);
138 RSADeformatter.SetHashAlgorithm("MD5");
139 return RSADeformatter.VerifySignature(HashbyteDeformatter, DeformatterData);
140 }
141
142 public bool SignatureDeformatter(string p_strKeyPublic, byte[] HashbyteDeformatter, string p_strDeformatterData)
143 {
144 RSACryptoServiceProvider RSA = new RSACryptoServiceProvider();
145 RSA.FromXmlString(p_strKeyPublic);
146 RSAPKCS1SignatureDeformatter RSADeformatter = new RSAPKCS1SignatureDeformatter(RSA);
147 RSADeformatter.SetHashAlgorithm("MD5");
148 byte[] DeformatterData = Convert.FromBase64String(p_strDeformatterData);
149 return RSADeformatter.VerifySignature(HashbyteDeformatter, DeformatterData);
150 }
151
152 public bool SignatureDeformatter(string p_strKeyPublic, string p_strHashbyteDeformatter, string p_strDeformatterData)
153 {
154 byte[] HashbyteDeformatter = Convert.FromBase64String(this.GetHash(p_strHashbyteDeformatter));
155 RSACryptoServiceProvider RSA = new RSACryptoServiceProvider();
156 RSA.FromXmlString(p_strKeyPublic);
157 RSAPKCS1SignatureDeformatter RSADeformatter = new RSAPKCS1SignatureDeformatter(RSA);
158 RSADeformatter.SetHashAlgorithm("MD5");
159 byte[] DeformatterData = Convert.FromBase64String(p_strDeformatterData);
160 return RSADeformatter.VerifySignature(HashbyteDeformatter, DeformatterData);
161 }