Validation (in contrast with verification) is assurance that a product, service, or system meets the needs of the stakeholders. It could contain the acceptance phase.

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Signtool validation fails when signing and validating are done in different machines

I am signing an exe from a machine using a cer file. Then when I validate the EXE using the signtool.exe from the same machine, it succeeds. But when I try to validate it using the same .cer installed ...
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109 views

Secure self-concealing symmetric encryption (non-verifiable decryption)?

From what I observed using standard encryption tools such as OpenSSH and GPG, the decryption only succeeds when the correct password/key is provided (or at most a few others, in case of collision). (...
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59 views

Why allow access without an access token but deny access with an invalid access token?

I encountered a data storage service with rather weird access policies. There're "folders" with "files" and each "folder" can have either of the following permissions: anyone in the world can ...
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30 views

Validate Code Signing Root Certificate Offline

I am developing a library distributed as a Windows DLL to be called by 3rd party executables. I expect the calling EXE to be digitally signed and need to verify that. I have no control over the ...
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169 views

Public/Private key validation

Suppose I have this scenario: User --> Inputs License Key --> I validate it --> If success, good, move onto main window. If not, prompt the user to reenter the license key. The license key will not ...