Security amendment to 0048 ownership proof#147
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Jul 4, 2025
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| However, each signature is generated by the crypto scheme instead of each private session key signing the `account_id`. By default, the following statement is signed by the crypto scheme: | ||
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| However, each signature is generated by the crypto scheme instead of each private session key signing the `account_id`. By default, the following statement is signed by the crypto scheme: | ||
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| The significant difference is that proof of possession suggested by RFC-0048 is signed: | ||
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| The significant difference is that proof of possession suggested by RFC-0048 is signed: | ||
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| vs the current proposal suggests changing the statement to: | ||
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| vs the current proposal suggests changing the statement to: | ||
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| ## Future Directions and Related Material | ||
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| \- \[1\] Substrate implementation of the generation of proof of possession for all crypto schemes (current and experimental ones) is implemented in Pull 6010. |
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| \- \[1\] Substrate implementation of the generation of proof of possession for all crypto schemes (current and experimental ones) is implemented in Pull 6010. | |
| \- \[1\] Substrate implementation of the generation of proof of possession for all crypto schemes (current and experimental ones) is implemented in [PR 6010](https://github.com/paritytech/polkadot-sdk/pull/6010). |
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This RFC is an amendment to RFC-0048. It proposes to change the
OpaqueKeysInner:create_ownership_proofandOpaqueKeys:: ownership_proof_is_validto invoke generation and validation procedure specific to each crypto time. This enable different crypto scheme implement
the proof of possession fitted to their security need. In short, this RFC delegates the procedure of generating and validating proof of possession to the crypto scheme. This has been implemented: https://github.com/paritytech/polkadot-sdk/pull/6010/files#r2003580725