WEBAUTHN_COMMON_ATTESTATION structure (webauthn.h)

The structure containing the common data for an attestation.

Syntax

typedef struct _WEBAUTHN_COMMON_ATTESTATION {
  DWORD         dwVersion;
  PCWSTR        pwszAlg;
  LONG          lAlg;
  DWORD         cbSignature;
  PBYTE         pbSignature;
  DWORD         cX5c;
  PWEBAUTHN_X5C pX5c;
  PCWSTR        pwszVer;
  DWORD         cbCertInfo;
  PBYTE         pbCertInfo;
  DWORD         cbPubArea;
  PBYTE         pbPubArea;
} WEBAUTHN_COMMON_ATTESTATION, *PWEBAUTHN_COMMON_ATTESTATION;

Members

dwVersion

Version of this structure, to allow for modifications in the future. This field is required and should be set to CURRENT_VERSION.

pwszAlg

The hash and padding algorithm. This won't be set for fido-u2f which assumes "ES256".

lAlg

The COSE algorithm identifier. This value is a number identifying a cryptographic algorithm. The algorithm identifiers should be values registered in the IANA COSE Algorithms registry, for instance, -7 for "ES256" and -257 for "RS256".

cbSignature

The signature that was generated for this attestation.

pbSignature

A pointer to the signature that was generated for this attestation.

cX5c

Array of X.509 DER encoded certificates. The first certificate is the signer, leaf certificate. This is set for Full Basic Attestation. If not set, then this is a Self Attestation.

pX5c

A pointer to the array of X.509 certificates.

pwszVer

A pointer to the version of the attestation statement. (This is set for tpm.)

cbCertInfo

The size of the certificate information. (This is set for tpm.)

pbCertInfo

A pointer to the certificate information. (This is set for tpm.)

cbPubArea

The size of the public key area. (This is set for tpm.)

pbPubArea

A pointer to the public key area. (This is set for tpm.)

Requirements

Requirement	Value
Header	webauthn.h

See also

WEBAUTHN_CREDENTIAL_ATTESTATION

WEBAUTHN_X5C