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Relax EKU requirements on signing certificates #167

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Merged
NiazFK merged 1 commit into from
Oct 3, 2022
Merged

Relax EKU requirements on signing certificates #167

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2 changes: 1 addition & 1 deletion signature-specification.md
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Expand Up @@ -214,7 +214,7 @@ The `basicConstraints` extension is OPTIONAL and can OPTIONALLY be marked as cri
1. **[Key Usage:](https://datatracker.ietf.org/doc/html/rfc5280#section-4.2.1.3)**
The `keyUsage` extension MUST be present and MUST be marked critical. Bit positions for `digitalSignature` MUST be set. The Bit positions for `keyCertSign` and `cRLSign` MUST NOT be set.
1. **[Extended Key Usage:](https://datatracker.ietf.org/doc/html/rfc5280#section-4.2.1.12)** The `extendedKeyUsage` extension is OPTIONAL and can OPTIONALLY be marked as critical.
- **For codesigning certificate:** If present, the value MUST contain `id-kp-codeSigning` and MUST NOT contain `anyExtendedKeyUsage`, `serverAuth`, `emailProtection` and `timeStamping`.
- **For signing certificate:** If present, the value MAY contain `id-kp-codeSigning` and MUST NOT contain `anyExtendedKeyUsage`, `serverAuth`, `emailProtection` and `timeStamping`.
- **For timestamping certificate:** If present, the value MUST contain `id-kp-timeStamping` and MUST NOT contain `anyExtendedKeyUsage`, `serverAuth`, `emailProtection` and `codeSigning`.
1. **Key Length** The certificate MUST abide by the following key length restrictions:
- For RSA public key, the key length MUST be 2048 bits or higher.
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