Mark Sinclair
43 lines
1.3 KiB
Markdown
43 lines
1.3 KiB
Markdown
# Example code to verify a signature
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This is an example app that shows how to verify a signature signed by an account key.
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Inputs to the app are:
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- **signature** - bytes represented as a hex string
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- **public key** - in JSON format (you can query any Cosmos chain for account's public key as JSON, however it will need to have sent a signed transaction to the chain for this to be present)
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- **message** - the string message to verify
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## Running locally
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Run the example by changning to this directory and running:
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```
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cargo run
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```
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And you should see the output:
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```
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Nym signature verification example
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public key: {"@type":"/cosmos.crypto.secp256k1.PubKey","key":"A4FdhUMasPmNhRZjtpKlmjNbq7EEUgPxfdI+E3vSajvc"}
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account id: n1lntkptzz8grf2w4yht4szxktzwsucgv4s7vv9g
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signature: E3AA5AC0DA1B7DEBB7808000F719D8ACB9A0BE10AFA2756A788516268EB246A1257EC1097C5E364EF916145B01641DEDFE955994CB340BDAFA99A65BCA3F6F28
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message: test 1234
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Verify the correct message:
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SUCCESS ✅ signature is valid
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Verify the correct message with the wrong address:
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FAILURE ❌ signature is not valid: account id does not match
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Verify the correct message with the wrong account and public key:
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FAILURE ❌ signature is not valid: account id does not match
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Verify another message:
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FAILURE ❌ signature is not valid: signature error - signature error
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``` |