use jwt for authorization angular and dotnet core code example
Example: c# core jwt
private string GenerateJSONWebToken()
{
var securityKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes("MynameisJamesBond007"));
var credentials = new SigningCredentials(securityKey, SecurityAlgorithms.HmacSha256);
var token = new JwtSecurityToken(
issuer: "https://www.yogihosting.com",
audience: "https://www.yogihosting.com",
expires: DateTime.Now.AddHours(3),
signingCredentials: credentials
);
return new JwtSecurityTokenHandler().WriteToken(token);
}