SQL Server

Set the JWS Payload from a StringBuilder

See more JSON Web Signatures (JWS) Examples

Demonstrates Jws.SetPayloadSb, which sets the payload to be signed from a StringBuilder.

Background. JWS (JSON Web Signature) integrity-protects a payload with a signature or MAC. The header alg names the algorithm; this example uses HMAC-SHA256 (HS256) with a symmetric MAC key.

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SQL Server

--
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    DECLARE @sTmp0 nvarchar(4000)
    DECLARE @success int
    SELECT @success = 0

    DECLARE @jws int
    EXEC @hr = sp_OACreate 'Chilkat.Jws', @jws OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    --  Set the payload from a StringBuilder.
    DECLARE @sbPayload int
    EXEC @hr = sp_OACreate 'Chilkat.StringBuilder', @sbPayload OUT

    EXEC sp_OAMethod @sbPayload, 'Append', @success OUT, 'This is the content to sign.'

    DECLARE @bIncludeBom int
    SELECT @bIncludeBom = 0
    EXEC sp_OAMethod @jws, 'SetPayloadSb', @success OUT, @sbPayload, 'utf-8', @bIncludeBom
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @jws, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @jws
        EXEC @hr = sp_OADestroy @sbPayload
        RETURN
      END

    PRINT 'Payload set.'

    EXEC @hr = sp_OADestroy @jws
    EXEC @hr = sp_OADestroy @sbPayload


END
GO