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Meow Hash
A fast hash meant for large data sets.
16 days ago by MemoryStomp
Calculating checksums with CertUtil – Jan Christiansen's technical blog | https://www.jc-tech.info/
Among the supported hash algorithms are MD5, SHA1 and SHA256.

Be aware that the hash algorithm has to be in uppercase or the command can fail with:
CertUtil: -hashfile command FAILED: 0xd00000bb (-805306181)
CertUtil: WsResetMetadata
windows  sighmicrosoft  hash  checksum  errormessage  solution 
18 days ago by kme
Meow Hash
Super fast hash function.
Hash  Data 
22 days ago by lost_in_space
The better way to update Supermicro BIOS is via IPMI - VirtualLifestyle.nl
Better way of updating the BIOS…

Somehow, I ended up on Supermicro’s site, trying to find a solution. And I did! And oh boy, it’s a gem. I knew there was a reference to BIOS updates in the IPMI interface, but that requires an activation key.

But that did persuade me to search for ways to activate this option, and I found a separate solution from Supermicro that does, and it supplies the aforementioned activation key, too.

…courtesy of Supermicro Update Manager

That solution is called [SUM](http://www.supermicro.com/products/nfo/SMS_SUM.cfm), or Supermicro Update Manager. It’s an incredibly cool CLI-tool to manage and configure Supermicro servers, and I’ll dive into the tool a little later (since it’s the [best way to update a Supermicro BIOS](https://www.virtuallifestyle.nl/2016/08/the-best-way-to-update-supermicro-bios-is-via-supermicro-update-manager)). We won’t need it to update our BIOS via IPMI, though.

The trick is that SUM needs am ‘Out-of-Band’ software license installed on each local IPMI, so getting your hands on SUM means you get one of those licenses. You can request an evaluation version on the [SUM product page](http://www.supermicro.com/products/nfo/SMS_SUM.cfm). With the license, and even without actually using SUM, you now have the easiest way to update your BIOS.


Supermicro  BMC  IPMI  BIOS  firmware  hash  cryptocurrency  key  reddit 
22 days ago by coffeebucket
Reverse Engineering Supermicro IPMI – peterkleissner.com
You buy a brand new product, it has a known vulnerability and you should pay for the update?! This is simply NOT acceptable. As the owner of my device I shall be free to update it. Therefore, I spent exactly 1 night reverse engineering this thing to figure out the license key algorithm. tl;dr here is the algorithm to generate those license keys:

MAC-SHA1-96(INPUT: MAC address of BMC, SECRET KEY: 85 44 E3 B4 7E CA 58 F9 58 30 43 F8)

Anybody can create the license key on https://cryptii.com/hmac by typing on the left side (select Bytes) the MAC address of the IPMI (the BMC), select in the middle HMAC and SHA-1, enter the secret key and on the right side the License Key will appear!


Supermicro  BMC  IPMI  BIOS  firmware  hash  cryptocurrency  key 
22 days ago by coffeebucket

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