C#•9mo ago

Exception Signing Algorithm

in my program im using HmacSha512Signature but as soon as i start to execute to generate JWT token my programm throws an exception that my key size must be greater than 512

18 Replies

lycian•9mo ago

How are you creating the JwtSecurityToken? It seems likely the signingCredentials are made with a key that is 136 bits insted of 512

Unknown User•9mo ago

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IbraDev💻OP•9mo ago

appsettingsjason

IbraDev💻OP•9mo ago

lycian•9mo ago

it seems likely the signingCredentials are made with a key that is 136 bits insted of 512

what is cred? min repro code would be preferable, can def help with that

IbraDev💻OP•9mo ago

Im sorry... i dont now how to do that stuff im likely new to github

lycian•9mo ago

Is this code on github?

IbraDev💻OP•9mo ago

yes but private so i found out when i change my "My secret key" its always ends in an exception bc i use more bits or less bits

lycian•9mo ago

no worries. I'm no expert, but I think it's in how you're creating the token . You might have more success with this

var tokenHandler = new JwtSecurityTokenHandler();
var tokenDescriptor = new SecurityTokenDescriptor
{
    Issuer = "yourdomain.com",
    Audience = "yourdomain.com",
    Claims = user.Claims, // Add any custom claims here
    Expires = DateTime.Now.AddDays(1),
    SigningCredentials = cred
};
var token = tokenHandler.CreateToken(tokenDescriptor);
var jwt = tokenHandler.WriteToken(token);

var tokenHandler = new JwtSecurityTokenHandler();
var tokenDescriptor = new SecurityTokenDescriptor
{
    Issuer = "yourdomain.com",
    Audience = "yourdomain.com",
    Claims = user.Claims, // Add any custom claims here
    Expires = DateTime.Now.AddDays(1),
    SigningCredentials = cred
};
var token = tokenHandler.CreateToken(tokenDescriptor);
var jwt = tokenHandler.WriteToken(token);

IbraDev💻OP•9mo ago

so which part do have to replace it with

lycian•9mo ago

your new JwtSecurityToken should be made with CreateToken

IbraDev💻OP•9mo ago

the same exception

Unknown User•9mo ago

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MODiX•9mo ago

If your code is too long, you can post to https://paste.mod.gg/ and copy the link into chat for others to see your shared code!

Unknown User•9mo ago

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Gaming

Programming

Exception Signing Algorithm