I am trying to implement signing in python, but I can't really find any example of signing data (e.g. SIG_1_...) anywhere. ANyone has links to examples?
Basically, I want to sign it 'manually', using python, not cleos and etc.
2 Answers
Refer to eospy.
EOSIO also uses secp256k1 like Bitcoin or Ethereum, so you can sign a transaction manually, but you should know its encoding convention. Its signature consists of SIG_K1_ prefix and WIF-encoded BASE58 string. Unlike Bitcoin or Ethereum, EOSIO demands a canonical signature, which is more restrict than low-s signature.
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Unfortunately, eospy doesn't help me. Signatures, that it provides, don't work for WAX network: for some reason it's longer, then the signature, needed in WAX, so WAX node API returns an error. I was trying to use only first 65 bytes of signature it provides, but it didn't work out neither Jun 16, 2021 at 7:35
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I was also trying to use
ecdsamodule, and make signature, by signing SHA-256'ed data by it (usingecdsa.SigningKey.from_string(WIF, ecdsa.SECP256k1, hashlib.sha256), But it didn't work niether Jun 16, 2021 at 7:40 -
waxjs uses eosjs directly for signing a transaction. I don't think there is a significant difference between eos and wax. You should distinguish 65 bytes signature binary from its encoded (stringified) form.– conr2dJun 16, 2021 at 8:58
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you can try to ask the same question on the telegram eosio devs channel: t.me/joinchat/0uhWYfXVpPlkNTA1– oviJun 25, 2021 at 7:50
if you want to see how signing is done in eosio these can be two starting points (none of them are python samples):
for a python sample try this: https://github.com/eosnewyork/eospy/blob/ed55d652f5dcc9e45917273e6bc14b37791e772d/eospy/keys.py#L163
