how to get v r s from signatures?

[sultana-mnw]

Description: I have follow the web3 methods in this link ( https://github.com/aionnetwork/aion_web3/wiki/web3-eth-accounts ) to get signature and v r s but i only get signature not v r s.

Web3 version: 1.0.3

Command(s) triggering the issue: web3.eth.accounts.sign(message,privatekey);

API output:

{
message:
'0x2c80807145a8a3688266c415da8a02b30ae8864180dbf23a4a43c63369a1a82d',
messageHash:
'0x3ca080ec9581ed002b1a43216c211aab4a7093927f6f60ab29ab4ed4ed38db44',
signature: '0x140b7b7027473c964344bb7837c13ee1650d5b8a1faae1ca14fe630d784586a7e85a90b2bb2a88f1ee699ae7b3b6471b99565d1b56d9fc0e49295493118f7eeb49f8ba3d115bc2f697ddaf1ecd5ab44db1a60f1fc57a6a07c3d41d84703e9302'
}

[aion-kelvin]

Hi,

That is a mistake in the documentation... the signature is given not as (r, s), but simply as one hex string. We will update our docs.

[sultana-mnw]

Hello,
Ok. But how could I get that (v r s) from that signature.

[aion-kelvin]

(v, r, s) is given by Ethereum's signing scheme. We use a different scheme (Ed25519 instead of ECDSA), which does not have (v, r, s). May I ask what how/why you want (v, r, s)?

Edit: typo in sig scheme name

[sultana-mnw]

Hello, For some specific task to validate the signature in contract using ecrecover keyword. For that i need a ( v r s )So how could i do that? Is it any other methods to validate signature in contract for aion. Regards Sultana

…

On Thu, 29 Nov 2018, 9:27 pm aion-kelvin, ***@***.***> wrote: (v, r, s) is given by Ethereum's signing scheme. We use a different scheme (EC25519 instead of ECDSA), which does not have (v, r, s). May I ask what how/why you want (v, r, s)? — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#61 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/Ai1eUUi3jibM3bcKZfs1q4D2pEV8MEVyks5u0APjgaJpZM4Y22-G> .

[aion-kelvin]

Are you signing/recovering transactions? Or arbitrary messages?

[sultana-mnw]

Am signing the transaction and also orbitary messages.

…

On Thu, 29 Nov 2018, 9:55 pm aion-kelvin, ***@***.***> wrote: Are you signing/recovering transactions? Or arbitrary messages? — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#61 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/Ai1eUQjGA1zYOC17r8rQySdcykM3SBX5ks5u0AqVgaJpZM4Y22-G> .

[aion-kelvin]

web3.eth.accounts.recover can be used to recover the address of signatures created by web3.eth.accounts.sign. Unfortunately, we do not support recovering the address of signed transactions right now.

API References:
https://docs.aion.network/docs/web3-eth-accounts#section-sign
https://docs.aion.network/docs/web3-eth-accounts#section-recover

(Don't use web3.eth.accounts.recover to recover a signature created by eth.accounts.signsignTransaction, as it will not give the correct result)

edit: fixed typo (see strikethrough above)