/// <summary>
/// Computes a JSON Web Signature (JWS) according to the rules of RFC 7515 Section 5.
/// </summary>
/// <param name="sigFunc"></param>
/// <param name="payload"></param>
/// <param name="protectedHeaders"></param>
/// <param name="unprotectedHeaders"></param>
/// <returns></returns>
public static JwsSigned SignFlatJsonAsObject(Func <byte[], byte[]> sigFunc, string payload,
object protectedHeaders = null, object unprotectedHeaders = null)
{
if (protectedHeaders == null && unprotectedHeaders == null)
{
throw new ArgumentException("at least one of protected or unprotected headers must be specified");
}
string protectedHeadersSer = "";
if (protectedHeaders != null)
{
protectedHeadersSer = JsonConvert.SerializeObject(
protectedHeaders, Formatting.None);
}
string payloadB64u = Base64UrlEncode(Encoding.UTF8.GetBytes(payload));
string protectedB64u = Base64UrlEncode(Encoding.UTF8.GetBytes(protectedHeadersSer));
string signingInput = $"{protectedB64u}.{payloadB64u}";
byte[] signingBytes = Encoding.ASCII.GetBytes(signingInput);
byte[] sigBytes = sigFunc(signingBytes);
string sigB64u = Base64UrlEncode(sigBytes);
var jwsFlatJS = new JwsSigned
{
header = unprotectedHeaders,
@protected = protectedB64u,
payload = payloadB64u,
signature = sigB64u
};
return(jwsFlatJS);
}
/// <summary>
/// Computes a JSON Web Signature (JWS) according to the rules of RFC 7515 Section 5.
/// </summary>
/// <param name="sigFunc"></param>
/// <param name="payload"></param>
/// <param name="protectedHeaders"></param>
/// <param name="unprotectedHeaders"></param>
/// <returns></returns>
public static JwsSigned SignFlatJsonAsObject(Func<byte[], byte[]> sigFunc, string payload,
object protectedHeaders = null, object unprotectedHeaders = null)
{
if (protectedHeaders == null && unprotectedHeaders == null)
throw new ArgumentException("at least one of protected or unprotected headers must be specified");
string protectedHeadersSer = "";
if (protectedHeaders != null)
{
protectedHeadersSer = JsonConvert.SerializeObject(
protectedHeaders, Formatting.None);
}
string payloadB64u = Base64UrlEncode(Encoding.UTF8.GetBytes(payload));
string protectedB64u = Base64UrlEncode(Encoding.UTF8.GetBytes(protectedHeadersSer));
string signingInput = $"{protectedB64u}.{payloadB64u}";
byte[] signingBytes = Encoding.ASCII.GetBytes(signingInput);
byte[] sigBytes = sigFunc(signingBytes);
string sigB64u = Base64UrlEncode(sigBytes);
var jwsFlatJS = new JwsSigned
{
header = unprotectedHeaders,
@protected = protectedB64u,
payload = payloadB64u,
signature = sigB64u
};
return jwsFlatJS;
}
