1. A computer-implemented method, comprising: storing a document as discrete parts in electronic form on a computing device, the document including a document configuration that conveys data related to content of at least one discrete part and a document sequence portion that lists the discrete parts; applying a digital signature to the document stored on the computing device based on a digital signing policy to protect the content of the at least one discrete part with the digital signature while leaving the document sequence portion that lists the discrete parts unprotected by the digital signature; invalidating the digital signature when the content in the at least one discrete part is altered; and indicating that the digital signature is valid when the document sequence portion is altered to list an additional discrete part that is added to the document.
1. A computer-implemented method, comprising: storing a document as discrete parts in electronic form on a computing device, the document including a document configuration that conveys data related to content of at least one discrete part and a document sequence portion that lists the discrete parts; applying a digital signature to the document stored on the computing device based on a digital signing policy to protect the content of the at least one discrete part with the digital signature while leaving the document sequence portion that lists the discrete parts unprotected by the digital signature; invalidating the digital signature when the content in the at least one discrete part is altered; and indicating that the digital signature is valid when the document sequence portion is altered to list an additional discrete part that is added to the document. 6. The computer-implemented method as recited in claim 1 , further comprising indicating that the digital signature is invalid when the data in the at least one discrete part is altered.