将现有用户从MVC4 SimpleMembership迁移到MVC5 ASP.NET标识
我有一个当前实现SimpleMembership.的MVC4站点在网站的下一次迭代中，我想升级到MVC5和ASP.NET Identity。两个站点在web.config中具有相同的机器密钥。SimpleMembership表有一列Password和PaswordSalt，ASP.NET身份表有一列PasswordHash，似乎是Password + PasswordSalt的组合。
我尝试将旧站点上的密码和PasswordSlat连接在一起，但不起作用。
我的问题是，
如何将现有用户的密码从旧站点迁移到新站点？
回答 2
Stack Overflow用户
发布于 2015-07-06 04:01:47
应用程序用户的密码被加密并存储在数据库中。SQL成员身份中使用的加密算法与新身份系统中使用的加密算法不同。要重用旧密码，我们需要在旧用户使用SQL成员关系算法登录时选择性地解密密码，同时在新用户的身份中使用加密算法。
UserManager类具有属性'PasswordHasher‘，该属性存储实现'IPasswordHasher’接口的类的实例。这用于在用户身份验证事务期间加密/解密密码。在步骤3中定义的UserManager类中，创建一个新类SQLPasswordHasher并复制以下代码。
所以你必须用下面的代码创建一个新的hasher类：
public class SQLPasswordHasher : PasswordHasher
{
public override string HashPassword(string password)
{
return base.HashPassword(password);
}
public override PasswordVerificationResult VerifyHashedPassword(string hashedPassword, string providedPassword)
{
string[] passwordProperties = hashedPassword.Split('|');
if (passwordProperties.Length != 3)
{
return base.VerifyHashedPassword(hashedPassword, providedPassword);
}
else
{
string passwordHash = passwordProperties[0];
int passwordformat = 1;
string salt = passwordProperties[2];
if (String.Equals(EncryptPassword(providedPassword, passwordformat, salt), passwordHash, StringComparison.CurrentCultureIgnoreCase))
{
return PasswordVerificationResult.SuccessRehashNeeded;
}
else
{
return PasswordVerificationResult.Failed;
}
}
}
//This is copied from the existing SQL providers and is provided only for back-compat.
private string EncryptPassword(string pass, int passwordFormat, string salt)
{
if (passwordFormat == 0) // MembershipPasswordFormat.Clear
return pass;
byte[] bIn = Encoding.Unicode.GetBytes(pass);
byte[] bSalt = Convert.FromBase64String(salt);
byte[] bRet = null;
if (passwordFormat == 1)
{ // MembershipPasswordFormat.Hashed
HashAlgorithm hm = HashAlgorithm.Create("SHA1");
if (hm is KeyedHashAlgorithm)
{
KeyedHashAlgorithm kha = (KeyedHashAlgorithm)hm;
if (kha.Key.Length == bSalt.Length)
{
kha.Key = bSalt;
}
else if (kha.Key.Length < bSalt.Length)
{
byte[] bKey = new byte[kha.Key.Length];
Buffer.BlockCopy(bSalt, 0, bKey, 0, bKey.Length);
kha.Key = bKey;
}
else
{
byte[] bKey = new byte[kha.Key.Length];
for (int iter = 0; iter < bKey.Length; )
{
int len = Math.Min(bSalt.Length, bKey.Length - iter);
Buffer.BlockCopy(bSalt, 0, bKey, iter, len);
iter += len;
}
kha.Key = bKey;
}
bRet = kha.ComputeHash(bIn);
}
else
{
byte[] bAll = new byte[bSalt.Length + bIn.Length];
Buffer.BlockCopy(bSalt, 0, bAll, 0, bSalt.Length);
Buffer.BlockCopy(bIn, 0, bAll, bSalt.Length, bIn.Length);
bRet = hm.ComputeHash(bAll);
}
}
return Convert.ToBase64String(bRet);
}然后在您的Identity UserManager类中声明一个构造器以使用此散列器，例如：
public UserManager()
: base(new UserStore<User>(new ApplicationDbContext()))
{
this.PasswordHasher = new SQLPasswordHasher();
}Stack Overflow用户
发布于 2015-09-22 22:56:34
下面的链接说明了这一点：http://kevin-junghans.blogspot.com/2014/02/migrating-existing-website-from.html
public class SimplePasswordHasher : IPasswordHasher
{
public string HashPassword(string password)
{
return Crypto.HashPassword(password);
}
public PasswordVerificationResult VerifyHashedPassword(string hashedPassword, string providedPassword)
{
if(Crypto.VerifyHashedPassword(hashedPassword, providedPassword))
return PasswordVerificationResult.Success;
else return PasswordVerificationResult.Failed;
}
}https://stackoverflow.com/questions/19688804
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