Command-line tool to modify a digital signature

I need a Win32 command-line tool with the following syntax: [url removed, login to view] [url removed, login to view] bytesToAdd ...which will add a unauthenticated attribute of size BytesToAdd to the digital signature of a Win32 signed executable ([url removed, login to view]). The purpose of this application is to add a structure of bytesToAdd bytes to an ALREADY SIGNED executable without breaking the signature of the original executable. Unauthenticated attributes provide a means of adding further information without breaking the original signature. The resulting executable will contain data (inside the unauthenticated attribute) that can be modified without breaking the digital signature. Notes: - Application may use CryptoAPI, eg: CMSG_CTRL_DEL_SIGNER_UNAUTH_ATTR to add unauthenticated attributes to the signer's certificate, with this API: [url removed, login to view] - I will test the application by adding >200 bytes to a signed executable and verifying with the chktrust utility ([url removed, login to view]) that the executable is still signed correctly. - The data to be embedded in the unauthenticated attributes must be follow this pattern: FIXMEFIXMEFIXME... - Modifying the unauthenticated attribute's data with a hex editor, eg: replacing FIXMEFIXMEFIXME... with F1XM3FiXMeF_XM_... must not break the digital signature (ie: chktrust must render the same value) - The private key used to sign the executable - you can only ADD unauthenticated information to the certificate.

## Deliverables

1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done, including CPP, DSP and DSW files (should use Visual Studio 6).

2) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables):

a) For web sites or other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment.

b) For all others including desktop software or software the buyer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request.

3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement).

## Platform

Win32 - Will test under Windows XP. Must be coded in C/C++. .NET will >>NOT<< be accepted.

Beceriler: C Programlama, Bilgisayar Güvenliği, Mühendislik, Microsoft, MySQL, PHP, Yazılım Mimarisi, Yazılım Test Etme, Web Güvenliği, Windows Masaüstü

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İşveren Hakkında:
( 3 değerlendirme ) United States

Proje NO: #3382046

Bu iş için 1 freelancer ortalamada $85 teklif veriyor


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$85 USD in 5 gün içinde
(24 Değerlendirme)