Online SHA1 Hash Generator

I am working on integrating a new Authentication rest API that our web dev team wrote. The last piece I need to get working will return a User's User_Id GUID when given a username and password hash that matches the SHA1 Base64Encoded password hash stored in our user database.

Using the following VB.Net code with a hardcoded username and password salt, I am able to create a valid password hash.

..........Dim passwordHash As String = EncodePassword("Testing1234", "CQ4znO+Dd28GRle54xSW6A==")Public Function EncodePassword(ByVal pass As String, ByVal saltBase64 As String) As String    Dim bytes As Byte() = Encoding.Unicode.GetBytes(pass)    Dim src As Byte() = Convert.FromBase64String(saltBase64)    Dim dst As Byte() = New Byte(src.Length + bytes.Length - 1) {}    Buffer.BlockCopy(src, 0, dst, 0, src.Length)    Buffer.BlockCopy(bytes, 0, dst, src.Length, bytes.Length)    Dim algorithm As HashAlgorithm = HashAlgorithm.Create("SHA1")    Dim inArray As Byte() = algorithm.ComputeHash(dst)    Dim passwordHash AS String = Convert.ToBase64String(inArray)    Return passwordHashEnd Function

However, I cannot create the same password hash in SQL using the following code.

DECLARE @newPassword NVARCHAR(128) = 'Testing1234'DECLARE @encoded_salt NVARCHAR(128) = 'CQ4znO+Dd28GRle54xSW6A=='DECLARE @encoded_hashed_password NVARCHAR(128) = dbo.base64_encode(HASHBYTES('SHA1',                                                     CONVERT(VARBINARY(MAX), @encoded_salt)                                                     + CONVERT(VARBINARY(MAX), @newPassword)))SELECT @encoded_hashed_password AS Password_Hash

The function code for dbo.base64_encode is here:

ALTER FUNCTION [dbo].[base64_encode] (@data VARBINARY(MAX))RETURNS VARCHAR(MAX)WITH SCHEMABINDING,RETURNS NULL  ON NULL INPUTBEGIN    RETURN (SELECT [text()] = @data FOR XML PATH(''));END;

Corresponding decode function (not used in example, but included for completeness)

ALTER FUNCTION [dbo].[base64_decode] (@base64_text VARCHAR(MAX))RETURNS VARBINARY(MAX)WITH SCHEMABINDING,RETURNS NULL ON NULL INPUTBEGIN    DECLARE @x XML;    SET @x = @base64_text;     RETURN @x.[value]('(/)[1]', 'VARBINARY(max)');END;

Can anyone help me figure out why the SQL script that appears to me to be equivalent to the VB.Net code does not produce the same result?

Recently i opted Google Play console App Signing feature into my existing app using "Export and upload a key from a Java keystore" option in Release Management->App Signing.

I had followed the first 3 steps and uploaded the "App Signing Private key".

After this step, I got the "App Signing Certificate " and "Upload Certificate" having the same SHA1 Fingerprint Certificate for both.

Does anybody face this issue in Google Play console? TIA

I need to get a key for DES (ECB-EDE). For this I have to use PBKDF2-SHA1 (but not HMAC-SHA1!). But I haven't seen any PBKDF2 implementations with standart SHA1. The ORACLE-JAVA documentation also says only about PBKDF2WithHmacSHA1.

Could you help with the implementation of PBKDF2 with standart SHA1?A reference to an implementation of PBKDF2WithHmacSHA1: this.

I don't want to calculate a file's checksum, just to know if a given string is a valid checksum

I have to write method like this:

boolean isHash(String str){  ...}

Method should return true if input string is md5 hash or sha1 hash or sha256 hash.

Is it possible to implement such method ?