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Meow Hash
A fast hash meant for large data sets.
hash 
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:
<code>
CertUtil: -hashfile command FAILED: 0xd00000bb (-805306181)
CertUtil: WsResetMetadata
</code>
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.

https://web.archive.org/web/20181026121357/https://www.virtuallifestyle.nl/2016/08/better-way-update-supermicro-bios-via-ipmi/

https://www.reddit.com/r/homelab/comments/5dox35/free_supermicro_bios_update_node_key_via_ipmi/
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!

https://web.archive.org/web/20181026120134/https://peterkleissner.com/2018/05/27/reverse-engineering-supermicro-ipmi/

https://www.virtuallifestyle.nl/2016/08/better-way-update-supermicro-bios-via-ipmi/
https://www.reddit.com/r/homelab/comments/5dox35/free_supermicro_bios_update_node_key_via_ipmi/
Supermicro  BMC  IPMI  BIOS  firmware  hash  cryptocurrency  key 
22 days ago by coffeebucket

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