policy library bug

[williamcroberts]

Below script fails with the error below

#!/usr/bin/env python3
import tpm2_pytss

if '__main__' == __name__:

    jpol1 = """{
    "name": "lab 6B policy",
    "description": "requested by Bill Roberts",
    "policy":
    [
       {
        "type": "PCR",
        "currentpcrs": [
    """

    jpol2a = "16"
    jpol2b = """
            { "hashAlg": "sha256", "pcr": 16, }
    """

    jpol3 = """
                       ]
       }
    ]
    }"""

    print("A")
    pol6b1 = tpm2_pytss.policy(''.join((jpol1,jpol2a,jpol3)), tpm2_pytss.TPM2_ALG.SHA256)
    print("B")
    pol6b2 = tpm2_pytss.policy(''.join((jpol1,jpol2b,jpol3)), tpm2_pytss.TPM2_ALG.SHA256)
    print("C")

ERROR:fapijson:src/tss2-fapi/tpm_json_deserialize.c:258:get_number_from_json() Bad value
ERROR:fapijson:src/tss2-fapi/tpm_json_deserialize.c:321:ifapi_json_pcr_selection_deserialize() Bad PCR value ErrorCode (0x0006000b)
ERROR:fapijson:src/tss2-fapi/ifapi_policy_json_deserialize.c:1300:ifapi_json_TPMS_POLICYPCR_deserialize() Bad value for field "currentPCRs". ErrorCode (0x0006000b)
ERROR:fapijson:src/tss2-fapi/ifapi_policy_json_deserialize.c:1700:ifapi_json_TPMT_POLICYELEMENT_deserialize() Bad value for field "element". ErrorCode (0x0006000b)
ERROR:fapijson:src/tss2-fapi/ifapi_policy_json_deserialize.c:1734:ifapi_json_TPML_POLICYELEMENTS_deserialize() TPMT_POLICYELEMENT_deserialize ErrorCode (0x0006000b)
ERROR:fapijson:src/tss2-fapi/ifapi_policy_json_deserialize.c:1802:ifapi_json_TPMS_POLICY_deserialize() Bad value for field "policy". ErrorCode (0x0006000b)
ERROR:"policy":src/tss2-policy/tss2_policy.c:93:Tss2_PolicyInit() Deserialize policy ErrorCode (0x0006000b)
Traceback (most recent call last):

The question is why that error, is it right? Need to investigate this.

[JuergenReppSIT]

currentPCRandBanks is needed instead of currentpcrs:

#!/usr/bin/env python3
import tpm2_pytss

if '__main__' == __name__:

    jpol1 = """{
    "name": "lab 6B policy",
    "description": "requested by Bill Roberts",
    "policy":
    [
       {
        "type": "PCR",
        "currentpcrs": [
    """

    jpol2 = """{
    "name": "lab 6B policy",
    "description": "requested by Bill Roberts",
    "policy":
    [
       {
        "type": "PCR",
        "currentPCRandBanks": [
    """

    jpol2a = "16"
    jpol2b = """
            { "hash": "sha256", "pcrselect": [ 16 ], }
    """

    jpol3 = """
                       ]
       }
    ]
    }"""

 
    # print("A")
    pol6b1 = tpm2_pytss.policy(''.join((jpol1,jpol2a,jpol3)), tpm2_pytss.TPM2_ALG.SHA256)
    print("B")
    pol6b2 = tpm2_pytss.policy(''.join((jpol2,jpol2b,jpol3)), tpm2_pytss.TPM2_ALG.SHA256)
    print("C")
    print("".join((jpol2,jpol2b,jpol3)))