How to verify offchain signed message inside onchain program
How to verify offchain signed message inside onchain program
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hammad ali · External communityPost link
External question — Solana Stack Exchange
Author: hammad ali
Original post: https://solana.stackexchange.com/questions/16765
License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/
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I want to implement verfying signature same as ethereum in solana
ethereum guide (
https://solidity-by-example.org/signature/
)
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Jimii · External communityPost link
External answer — Solana Stack Exchange
Author: Jimii
Original post: https://solana.stackexchange.com/a/16766
License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/
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Ethereum uses the Secp256k1 signing algorithm. Solana provides said algorithm and also ED25519 programs as pre-compiles.
You can call them onchain but it would use up too many CUs
Including as a top-level instruction in your transaction is the best option,
https://github.com/anza-xyz/agave/blob/8f9fc2ada2396fc1e41a7393e9ac8714635d3107/sdk/src/secp256k1_instruction.rs#L1215-L1247
Previous answers to this, with the Ed25519
https://solana.stackexchange.com/a/13901/1708
https://solana.stackexchange.com/a/16605/1708
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Gopinath Shanmugavadivel · External communityPost link
External answer — Solana Stack Exchange
Author: Gopinath Shanmugavadivel
Original post: https://solana.stackexchange.com/a/23126
License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/
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Check this
https://github.com/zfedoran/brine-ed25519
.
Find this in
https://crates.io/crates/brine-ed25519
.
works in SVM.
Here I provide sample signature verification flow.
use brine_ed25519::sig_verify;
let pubkey: [u8; 32] = [...];
let sig: [u8; 64] = [...];
let message = b"hello world";
sig_verify(&pubkey, &sig, message)?;
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Quoted from Forex.com.bd-Editorial External answer — Solana Stack Exchange Author: Jimii Source score (net votes, not local likes): 0 Original post: https://solana.stackexchange.com/a/16766 License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/ Adaptation: HTML converted to plain text; contact email addresses removed. Ethereum uses the Secp256k1 signing algorithm. Solana provides said algorithm and also ED25519 programs as pre-compiles. You can call them onchain but it would use up too many CUs Including as a top-level instruction in your transaction is the best option, https://github.com/anza-xyz/agave/blob/8f9fc2ada2396fc1e41a7393e9ac8714635d3107/sdk/src/secp256k1_instruction.rs#L1215-L1247 Previous answers to this, with the Ed25519 https://solana.stackexchange.com/a/13901/1708 https://solana.stackexchange.com/a/16605/1708
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