Collaborate Disseminate
I develop an app and was able to gather some clients, the next step in the application backlog is a Licensing module.
I used and modified some code that helped me in the matter and was able to accomplish a simple licensing system. Although… Continue reading Licensing application approach [closed]
The popularity of eSignature solutions has skyrocketed in the last year, as part of companies’ digital transformation efforts in the COVID-19 environment. However, not all eSignatures are necessarily right for business. Considering eSignature solutions… Continue reading Not all eSignature solutions are necessarily right for business
Frankly, I wasn’t sure whether this belongs in crypto.stackexchange.com or here, so forgive me. I’ve been going through a book where in one of the chapters the author tries to illustrate public key cryptography by imagining a "four-st… Continue reading Understanding public key cryptography example
I need to receive emails and put them in different "inboxes". Identifying and validating an inbox involves a database hit in order to search for the to-address.
I would like to not hit the db if I know that the to-address is not … Continue reading Possible to generate short signed strings?
When I use XAdES for file types other than XML, how is the file digested for signature?
My understanding is that XAdES is XMLDSIG with a couple extra fields. For XML signatures, the signature is embedded directly into the XML. For other fi… Continue reading XMLDSIG and XAdES for non-XML file types
Say I’m running a server with Ubuntu and an application stack and I want to lock down potential malicious access.
Is there some OSS toolchain for disallowing execution of all unsigned binaries on linux? I’m imagining some toolchain that a… Continue reading Is there some OSS toolchain for disallowing execution of all unsigned binaries on linux?
I’m trying to figure out how to establish trust in Windows executables that I download from the internet.
Some software that I download, such as KeepassXC, has a Windows Digital Signature, but they also provide a PGP signature that I can m… Continue reading What’s the difference between an executable signed with a Windows Digital Signature and one signed with PGP?
Bank accounts are bound to an identity. Can bank cards be used in the same way as https://www.identrust.com/certificates/document-signing ?
Continue reading Can an EMV bank card be used to digitally sign documents?
What is the security level of DSA algorithm when $q$ is a 224 bit prime?
Is it always a simple rule that the security level is the bit length of $q$ divided by two ?
Continue reading Security level of DSA when $q$ is a 224 bit prime? [migrated]
Let’s say Alice has three secrets: SecretA, SecretB, SecretC
Alice shows these three secrets to Bob and gets a single signature from him that signs all three secrets together. Something like
Signature = Sign(Hash(SecretA, SecretB, SecretC)… Continue reading How to sign multiple data sets with a single signature, so that it can be validated for single data set without requiring the rest of the data?