What is the hash logic in MVC 5 Identity

Question

I am new to MVC 5 Identity. I am trying to find what is the hash logic for password in mvc 5 identity.

I am trying to validate user outside .net project but using its table AspNetUsers. If I am correct in mvc 4 it was SHA1?? But I am not sure whats the same in MVC 5.

Also can we validate user in table AspNetUsers within the sql server using sql script itself?

Regards & Thanks.

Answer 1

From https://github.com/aspnet/Identity/blob/dev/src/Microsoft.AspNetCore.Identity/PasswordHasher.cs

Version 2:

PBKDF2 with HMAC-SHA1, 128-bit salt, 256-bit subkey, 1000 iterations. (See also: SDL crypto guidelines v5.1, Part III)

Format: { 0x00, salt, subkey }

Version 3:

PBKDF2 with HMAC-SHA256, 128-bit salt, 256-bit subkey, 10000 iterations.

Format: { 0x01, prf (UInt32), iter count (UInt32), salt length (UInt32), salt, subkey } (All UInt32s are stored big-endian.)