A hexadecimal number is created from a decimal number. Overwriting one attribute of the same UUID with the other is an internal conflict. You should not use the same UUID pair in your modifiers. Mojang and the server of the popular game, Minecraft, use UUID to keep track of players and make sure that they stay with the game even after they change their name. A UUID can allow players to change their name that is visible to players, without servers and server owners forgetting who the players are. The UUID (Universally Unique Identifier) replaces your Minecraft username to verify your identity.
#MINECRAFT UUID GENERATOR FULL#
If this answer doesn't give you enough information, click here to see the full answer. The hyphen are set to split the UUID into numbers of the format 8-4-4-4-12 with each number marking the number of hexadecimal digits fitting int… To determine the version-3 UUID corresponding to a given namespace and name, the UUID.UUIDs (Universally unique identifiers Java Class) are 128 bit long numbers that are used by Minecraft to distinguish between separate instances.RepresentationTechnical aspectsHyphenated hexadecimal: A hexadecimal representation of the UUID, with hyphens separating the different sections into individual numbers. The specification provides UUIDs to represent the namespaces for URLs, fully qualified domain names, object identifiers, and X.500 distinguished names but any desired UUID may be used as a namespace designator. The namespace identifier is itself a UUID. Version 3 uses MD5 as the hashing algorithm, and version 5 uses SHA-1. Version-3 and version-5 UUIDs are generated by hashing a namespace identifier and name. More info can be found on Wikipedia: en. Universally unique identifier | Versions 3 and 5 (namespace name-based) These transformations are required for it to be a valid version 3 UUID. We can see that byte 7 ( md5Bytes) and byte 9 ( md5Bytes) are different, which corresponds to the transformation that UUID.nameUUIDFromBytes performs. Md5Bytes |= 0x80 /* set to IETF variant */
Specifically: md5Bytes &= 0x0f /* clear version */ The source of Java’s UUID.nameUUIDFromBytes can be found here:
#MINECRAFT UUID GENERATOR MOD#
The source of Minecraft is not public so I cannot give a link to it, but you can set up a mod developer environment and browse the decompiled code that way. Do you have a link to the original source code so I can look myself? Google isn’t much helpful in this case.ĮDIT: So yes, it does indeed work as intended with the Java UUID object. I’ll try to generate it using a Java code with the UUID, but are you sure that this is exactly how it is generated in the game? I never found the original source code that is responsible for that, so I don’t know. You can see that two hexadecimal digits are different.
#MINECRAFT UUID GENERATOR GENERATOR#
It looks similar, but it’s different in few bits:ĭ5fc4f55-35fc-3de6-8e3c-03c25cd1ed19 ← generated using Offline Player UUID generator (and it matches with the offline UUID used on offline servers)ĭ5fc4f55-35fc-cde6-4e3c-03c25cd1ed19 ← generated using provided string format in an independent MD5 hash generator (used two different ones independent on each other, same result) However, given the fact that the UUID is an MD5 hash, I tried to generate one and it produces different hash. I was trying to find something that could tell me how an offline UUID is being generated and found this thread.
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