PKHeX | Pokémon Save File Editor
kandi X-RAY | PKHeX Summary
kandi X-RAY | PKHeX Summary
Pokémon core series save editor, programmed in [C#] Supports the following files: * Save files ("main", *.sav, \*.dsv, *.dat, \*.gci, *.bin) * GameCube Memory Card files (\*.raw, *.bin) containing GC Pokémon savegames. * Individual Pokémon entity files (.pk\*, *.ck3, \*.xk3, *.pb7, \*.sk2, *.bk4) * Mystery Gift files (\*.pgt, *.pcd, \*.pgf, .wc*) including conversion to .pk\* * Importing GO Park entities (\*.gp1) including conversion to .pb7 * Importing teams from Decrypted 3DS Battle Videos * Transferring from one generation to another, converting formats along the way. Data is displayed in a view which can be edited and saved. The interface can be translated with resource/external text files so that different languages can be supported. Pokémon Showdown sets and QR codes can be imported/exported to assist in sharing. PKHeX expects save files that are not encrypted with console-specific keys. Use a savedata manager to import and export savedata from the console ([Checkpoint] save_manager, [JKSM] or SaveDataFiler).
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Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of PKHeX
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QUESTION
I am using the prime256v1
curves for generating key pairs and sign using nodejs
with the default crypto
module.
crypto
...ANSWER
Answered 2018-Sep-08 at 15:03But can someone explain why?
Java encodes public keys in "X.509" format or more exactly the SubjectPublicKeyInfo
structure (SPKI) defined by X.509/PKIX; see rfc5280, rfc3279, and for ECC specifically rfc5480. That's why the data you pass to the key factory is in a class named X509EncodedKeySpec
. This ASN.1 structure contains an AlgorithmIdentifier
which identifies the algorithm used and its parameters (which for ECC is the curve/group used, in your case an OID identifying prime256 aka P-256 aka secp256r1) plus a BIT STRING type containing the actual encoded publickey value (which for ECC is the point in X9.62 format, which has several variants; here you are using uncompressed; according to the doc nodejs.crypto also supports compressed).
Your "prefix" is the DER encoding of the ASN.1 outer SEQUENCE, AlgorithmIdentifier, and tag length and padcount which begin the BIT STRING to contain the publickey point.
Basically dupe:
* How can I get a PublicKey object from EC public key bytes?
* Loading raw 64-byte long ECDSA public key in Java (Maarten's answer is effectively what you did)
* How can I generate a valid ECDSA EC key pair? (disclosure: mine)
FYI: Effectively the same issue also occurs for RSA and there are more Qs on that. And there are also similar issues with privatekeys in generic PKCS8 format compared to algorithm-specific formats, but since publickeys are usually exchanged with other systems and/or programs while privatekeys usually aren't interoperability of privatekey encoding is less often a concern.
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