加密解密高手進(jìn)！VB.NET 誰(shuí)能給一個(gè)MD5或其他的加密算法

這個(gè)是我之前寫(xiě)的。在需要時(shí)調(diào)用即可。

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Public Shared Function Encrypt(ByVal Text As String, ByVal sKey As String) As String

Dim provider As New DESCryptoServiceProvider()

Dim bytes As Byte() = Encoding.[Default].GetBytes(Text)

provider.Key = Encoding.ASCII.GetBytes(FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8))

provider.IV = Encoding.ASCII.GetBytes(FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8))

Dim stream As New MemoryStream()

Dim stream2 As New CryptoStream(stream, provider.CreateEncryptor(), CryptoStreamMode.Write)

stream2.Write(bytes, 0, bytes.Length)

stream2.FlushFinalBlock()

Dim builder As New StringBuilder()

For Each num As Byte In stream.ToArray()

builder.AppendFormat("{0:X2}", num)

Next

Return builder.ToString()

End Function

希望能幫到你

求VB.NET的MD5算法調(diào)用

下面是完整的類，可以設(shè)置任意密碼

'DES及md5加密解密----添加引用中添加對(duì)system.web的引用。

Imports?System.Security.Cryptography

Imports?System

Imports?System.Text

Imports?System.Web

'''?summary

'''?DES加密類

'''?/summary

'''?remarks/remarks

Public?Class?DESEncrypt

Public?Sub?DESEncrypt()

End?悶帶Sub

Public?Shared?Function?Encrypt(ByVal?Text?As?String)?As?String

Return?Encrypt(Text,?"12345678")

End?Function

Public?Shared?Function?Encrypt(ByVal?Text?As?String,?ByVal?sKey?As?String)?As?String

Dim?des?As?New?DESCryptoServiceProvider()

Dim?inputByteArray?As?Byte()

inputByteArray?=?Encoding.Default.GetBytes(Text)

des.Key?=?ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey,?"md5").Substring(0,?8))

des.IV?=?ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey,?"md5").Substring(0,?8))

Dim?ms?As?New?System.IO.MemoryStream()

Dim?cs?As?New?CryptoStream(ms,?des.CreateEncryptor(),?CryptoStreamMode.Write)

cs.Write(inputByteArray,?0,?inputByteArray.Length)

cs.FlushFinalBlock()

Dim?ret?As?New?StringBuilder()

Dim?b?As?Byte

For?Each?b?In?ms.ToArray()

ret.AppendFormat("{0:X2}",?b)

斗罩搜????Next

Return?ret.ToString()

End?Function

Public?Shared?Function?Decrypt(ByVal?Text?As?String)?As?String

Return?Decrypt(Text,?"12345678")

End?Function

Public?Shared?Function?Decrypt(ByVal?Text?As?String,?ByVal?sKey?As?空歷String)?As?String

Dim?des?As?New?DESCryptoServiceProvider()

Dim?len?As?Integer

len?=?Text.Length?/?2

Dim?inputByteArray(len?-?1)?As?Byte

Dim?x,?i?As?Integer

For?x?=?0?To?len?-?1

i?=?Convert.ToInt32(Text.Substring(x?*?2,?2),?16)

inputByteArray(x)?=?CType(i,?Byte)

Next

des.Key?=?ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey,?"md5").Substring(0,?8))

des.IV?=?ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey,?"md5").Substring(0,?8))

Dim?ms?As?New?System.IO.MemoryStream()

Dim?cs?As?New?CryptoStream(ms,?des.CreateDecryptor(),?CryptoStreamMode.Write)

cs.Write(inputByteArray,?0,?inputByteArray.Length)

cs.FlushFinalBlock()

Return?Encoding.Default.GetString(ms.ToArray())

End?Function

End?Class

'以下是調(diào)用方法

Public?Class?Form1

Private?Sub?Button1_Click(ByVal?sender?As?System.Object,?ByVal?e?As?System.EventArgs)?Handles?Button1.Click?'加密

Dim?str_Encrypt?As?String?=?DESEncrypt.Encrypt("你要加密的文本，可以是任意長(zhǎng)度",?"密碼，可以很長(zhǎng)，如果省略這個(gè)參數(shù)就是默認(rèn)的12345678")

End?Sub

Private?Sub?Button2_Click(ByVal?sender?As?System.Object,?ByVal?e?As?System.EventArgs)?Handles?Button2.Click?'解密

Dim?str_Decrypt?As?String?=?DESEncrypt.Decrypt("你要解密的文本,?可以是任意長(zhǎng)度",?"加密時(shí)用到的密碼，如果省略這個(gè)參數(shù)就是默認(rèn)的12345678")

End?Sub

點(diǎn)虐 中md5具體怎么使用加密和解密？

using System;\x0d\x0ausing System.Text;\x0d\x0ausing System.Security.Cryptography;\x0d\x0a\x0d\x0anamespace MD5\x0d\x0a{\x0d\x0a public class MD5\x0d\x0a {\x0d\x0a // 32 位\x0d\x0a public static String Encrypt(String s)\x0d\x0a {\x0d\x0a MD5 md5 = new MD5CryptoServiceProvider();\x0d\x0a byte[] bytes = System.Text.Encoding.UTF8.GetBytes(s);\x0d\x0a bytes = md5.ComputeHash(bytes);\x0d\x0a md5.Clear();\x0d\x0a\x0d\x0a string ret = "";\x0d\x0a for (int i = 0; i

回答于?2022-12-11