simplify text in security consideration

openid-4-verifiable-credential-issuance-1_0.md

@@ -1346,7 +1346,7 @@ Credential Issuers often want to know what Wallet they are issuing Credentials t
 
 The following mechanisms in concert can be utilized to fulfill those objectives:
 
-**Key attestation** is a mechanism where the device or security element in a device asserts the key management policy to the application creating and using this key. The Android Operating System, for example, provides apps with a certificate including a certificate chain asserting that a particular key is managed, for example, by a hardware security module. The Wallet can provide this data along with the proof of possession in the Credential Request (see (#credential-request) for an example) to allow the Credential Issuer to validate the key management policy. This requires the Credential Issuer to rely on the trust anchor of the certificate chain and the respective key management policy. Another variant of this concept is the use of a Qualified Electronic Signature as defined by the eIDAS regulation [@eIDAS]. This signature will not reveal the properties of the associated private key to the Credential Issuer. However, as one example, due to the regulatory regime of eIDAS, the Credential Issuer can deduce that the signing service manages the private keys according to this regime and fulfills very high security requirements. As another example, FIDO2 allows RPs to obtain an attestation along with the public key from a FIDO authenticator. That implicitly asserts the key management policy, since the assertion is bound to a certain authenticator model and its key management capabilities.
+**Key attestation** is a mechanism where the key storage component or Wallet Provider asserts the keys and their security policy. The Wallet can provide this data in the Credential Request to allow the Credential Issuer to validate the key management policy. This requires the Credential Issuer to rely on the trust anchor of the key attestation and the respective key management policy. While some existing platforms have key attestation formats, this specification introduces a common key attestation format that may be used by Credential Issuers for improved interoperability, see [](#keyattestation).
 
 **App Attestation**: Key attestation, however, does not establish trust in the application storing the Credential and producing presentation of that Credential. App attestation, as provided by mobile operating systems, e.g., iOS's DeviceCheck or Android's SafetyNet, allows a server system to ensure it is communicating to a legitimate instance of its genuine app. Those mechanisms can be utilized to validate the internal integrity of the Wallet (as a whole).