---
name: "Tspi_DAA_IssuerKeyVerification"
section: "3"
platform: "linux"
package: "libtspi-dev"
version: "0.3.9-3+wheezy1"
release: "Debian 7 (Wheezy)"
platforms: ["linux"]
url: "https://new.carta.tech/Tspi_DAA_IssuerKeyVerification"
---

# Tspi\_DAA\_IssuerKeyVerification(3)

verifies the DAA public key

TCG Software Stack Developer's Reference

## NAME

Tspi\_DAA\_IssuerKeyVerification - verifies the DAA public key

## SYNOPSIS

```
#include <tss/tss_typedef.h>
#include <tss/tss_structs.h>
#include <tss/tspi.h>

TSPICALL Tspi_DAA_IssuerKeyVerification(
    TSS_HDAA                  hDAA,
    TSS_HKEY                  issuerPk,
    TSS_DAA_PK_PROOF*         issuerPkProof,
    TSS_BOOL*                 isCorrect
);
```

## DESCRIPTION

Tspi\_DAA\_IssuerKeyVerification verifies the DAA public key of a DAA Issuer with respect to its associated proof. This is a resource consuming task. It can be done by trusted third party (certification). This is an optional function and does not require a TPM or a TCS.

## PARAMETERS

### hDAA

The *hDAA* parameter is used to specify the handle of the DAA object.

### issuerPk

The *issuerPk* parameter is a DAA Issuer public key.

### issuerPkProof

The *issuerPkProof* parameter is a structure representing the proofs of the correctness of the DAA Issuer public key.

### isCorrect

The *isCorrect* parameter is the return corectness of the proof.

## RETURN CODES

**Tspi\_DAA\_IssuerKeyVerification** returns TSS\_SUCCESS on success, otherwise one of the following values is returned:

- TSS\_E\_INVALID\_HANDLE

  Either the DAA is not valid.

- TSS\_E\_BAD\_PARAMETER

  - TSS\_E\_INTERNAL\_ERROR

  An internal SW error has been detected.

## CONFORMING TO

**Tspi\_DAA\_IssuerKeyVerification** conforms to the Trusted Computing Group Software Specification version 1.2

## SEE ALSO

[**Tspi\_DAA\_IssueSetup**(3)](/Tspi_DAA_IssueSetup/3.md)