Cryptography Looking for some crypto wisdom for an Enterprise use case. |
- Looking for some crypto wisdom for an Enterprise use case.
- A question to the experts regarding safe storage of crypto currency wallets.
- Hello r/crypto. I have a question about how to solve for a checksum on SHA-256. Full disclosure: it is Bitcoin related but Bitcoin has inspired me to learn about cryptography and I love it. I'm a programmer by trade but haven't played in the crypto space as much. Thanks in advance.
Looking for some crypto wisdom for an Enterprise use case. Posted: 01 Jan 2018 10:27 PM PST hi there r/crypto. I'm admittedly a serious crypto n00b so bear with me. I'm involved in a software project and we've been looking at ways to add a feature to analyze amalgamated data from a number of clients. It has been hard to get buy-in on the idea, despite the value we can provide, as this data is incredibly sensitive within the industry and there is some perception that the data of some individual organization could be compromised through the amalgamated results. I know a lot of this comes down to how we process and display the data, but I'm curious if anyone could share some knowledge areas I could dig into to solve this problem through cryptography. My extremely limited research initially brought me to homomorphic encryption, which would be wonderful but unfortunately I'd like to bring this online this year.. and that does't look likely with FHE. Thanks! Looking forward to being more involved here! [link] [comments] |
A question to the experts regarding safe storage of crypto currency wallets. Posted: 01 Jan 2018 02:08 PM PST Hi all. Whenever a discussion of safe storage of wallets comes up people always pipe up saying "don't store your wallet on your computer, don't store it in the cloud, use a hardware wallet, use a paper wallet" etc. It seems to me that a properly encrypted wallet should be perfectly safe on your computer or on the cloud right? Say I take a wallet which is encrypted by the software already. I run it through gpgp just to make sure and then store it in my google drive. How is this not safe? Somebody has to hack my google account (I already have 2FA), then they have to decrypt my wallet, then they have to know my wallet password in order to open it. That seems much safer to me than making a paper wallet and risk having it be stolen or lost or burned in a fire. Thanks in advance. [link] [comments] |
Posted: 01 Jan 2018 12:13 PM PST If I have the three following words: eagle grass fox, how do I compute whether or not the sentence passes a checksum? Are all checksums for sha-256 the same? If I hash these words into hex and then convert them to binary, is that how I would calculate the checksum? Does Bitcoin have it's own method of checksum validation relative to other implementations or is there a standard? Example: eagle sha-256 hash: e73b48f750be953532c1d1757b5ba081e8a6b0408ea8b4e65ef1e65631a7da06 binary: 11100111 00111011 01001000 11110111 01010000 10111110 10010101 00110101 00110010 11000001 11010001 01110101 01111011 01011011 10100000 10000001 11101000 10100110 10110000 01000000 10001110 10101000 10110100 11100110 01011110 11110001 11100110 01010110 00110001 10100111 11011010 00000110 If I repeat the same process for each word, what calculation would I need to perform to compute the checksum and validate the sentence? [link] [comments] |
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