KMF_KU_SIGN_CERT
case KMF_KU_SIGN_CERT:
ret = check_key_usage(handle, ta_cert, KMF_KU_SIGN_CERT);
ret = check_key_usage(handle, SignerCertData, KMF_KU_SIGN_CERT);
ret = check_key_usage(handle, signer_cert, KMF_KU_SIGN_CERT);