Mark Sinclair
89 lines
3.0 KiB
Rust
89 lines
3.0 KiB
Rust
use nym_cli_commands::validator::signature::helpers::secp256k1_verify_with_public_key_json;
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fn main() {
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println!("\nNym signature verification example\n\n");
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// the public key in JSON format (because Cosmos supports secp256k1 and ed25519 - NB: the helper only supports secp256k1)
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let public_key_as_json = r#"{"@type":"/cosmos.crypto.secp256k1.PubKey","key":"A4FdhUMasPmNhRZjtpKlmjNbq7EEUgPxfdI+E3vSajvc"}"#;
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// the Cosmos address prefix for Nyx is just 'n'
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let account_prefix = "n";
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// the account id is a hash of the public key combined with the prefix
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let account_id = "n1lntkptzz8grf2w4yht4szxktzwsucgv4s7vv9g".to_string();
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// the signature as a string of hex characters to represent the bytes in the signature
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let signature_as_hex = "E3AA5AC0DA1B7DEBB7808000F719D8ACB9A0BE10AFA2756A788516268EB246A1257EC1097C5E364EF916145B01641DEDFE955994CB340BDAFA99A65BCA3F6F28";
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// the original message as a string to verify
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let message = "test 1234".to_string();
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println!("public key: {}", &public_key_as_json);
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println!("account id: {}", &account_id);
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println!("signature: {}", &signature_as_hex);
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println!("message: {}", &message);
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println!();
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// this will pass, because the signature was signed for this message
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println!("\nVerify the correct message:");
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do_verify(
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account_id.clone(),
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account_prefix,
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public_key_as_json.to_string(),
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signature_as_hex.to_string(),
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message.clone(),
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);
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println!();
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// this will fail, because the account id doesn't match the public key
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println!("\nVerify the correct message with the wrong address:");
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do_verify(
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"n19s8wj0lhkvhr73vy746q3c2hfdzew80rxs6qmy".to_string(),
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account_prefix,
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public_key_as_json.to_string(),
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signature_as_hex.to_string(),
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message.clone(),
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);
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// this will fail, because the message was signed with another account private key
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println!("\nVerify the correct message with the wrong account and public key:");
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do_verify(
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"n19s8wj0lhkvhr73vy746q3c2hfdzew80rxs6qmy".to_string(),
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account_prefix,
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r#"{"@type":"/cosmos.crypto.secp256k1.PubKey","key":"A8l8JuPJjXPUWlBN0XaqRClrq9NMf2qaFQ5CJzidvAvK"}"#.to_string(),
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signature_as_hex.to_string(),
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message,
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);
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// this will fail, because the signature is for another message
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println!("\nVerify another message:");
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do_verify(
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account_id,
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account_prefix,
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public_key_as_json.to_string(),
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signature_as_hex.to_string(),
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"another message that will fail".to_string(),
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);
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}
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fn do_verify(
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account_id: String,
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prefix: &str,
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public_key_as_json: String,
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signature_as_hex: String,
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message: String,
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) {
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match secp256k1_verify_with_public_key_json(
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public_key_as_json,
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signature_as_hex,
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message,
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account_id,
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prefix,
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) {
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Ok(()) => println!("SUCCESS ✅ signature is valid"),
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Err(e) => println!("FAILURE ❌ signature is not valid: {}", e),
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}
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}
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