[tpm2] Re: How to remove contexts using tpm2-tools v3.1.3?

Roberts, William C <william.c.roberts at intel.com>
Newsgroups dev.linux.lists.tpm2
Message-ID <SN6PR11MB34379D11C3F9E0BB4144D5E9B8769@SN6PR11MB3437.namprd11.prod.outlook.com> 
Unfortunately, no.

Can you update to the latest release? The newest tools release would vastly enhance your experience.

Could you use the python bindings:
    pip install tpm2-pytss
That would require tpm2-tss libraries from version 2.4.0 or newer.
________________________________
From: Han <keepsimple(a)gmail.com>
Sent: Wednesday, December 15, 2021 12:50 PM
To: tpm2(a)lists.01.org <tpm2(a)lists.01.org>
Subject: [tpm2] How to remove contexts using tpm2-tools v3.1.3?

Hi,

I'm new to tpm2-tools and am using tpm2-tools version 3.1.3 on Raspberry Pi CM4. It turns out it doesn't have tpm2_flushcontext which was added in v4.0. Is there any other tools in tpm2-tools 3.1.3 that can remove contexts? My goal is to free up some memory in TPM as it returned the following error:

$ tpm2_rc_decode 0x902
error layer
  hex: 0x0
  identifier: TSS2_TPM_RC_LAYER
  description: Error produced by the TPM
format 0 warning code
  hex: 0x02
  name: TPM2_RC_OBJECT_MEMORY
  description: out of memory for object contexts

--

Thanks

Han
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<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
Unfortunately, no.</div>
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<br>
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<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
Can you update to the latest release? The newest tools release would vastly enhance your experience.</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
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<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
Could you use the python bindings:</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
&nbsp; &nbsp; pip install tpm2-pytss</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<span style="color: rgb(0, 0, 0); font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;">That would require tpm2-tss libraries from version 2.4.0 or newer.</span><br>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Han &lt;[email protected]&gt;<br>
<b>Sent:</b> Wednesday, December 15, 2021 12:50 PM<br>
<b>To:</b> [email protected] &lt;[email protected]&gt;<br>
<b>Subject:</b> [tpm2] How to remove contexts using tpm2-tools v3.1.3?</font>
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<div dir="ltr">Hi,
<div><br>
</div>
<div><span style="font-family:inherit; font-size:15px; font-style:inherit; font-variant-ligatures:inherit; font-variant-caps:inherit; font-weight:inherit; color:rgb(35,38,41)">I'm new to tpm2-tools and am using tpm2-tools version 3.1.3 on Raspberry Pi CM4.
 It turns out it doesn't have</span><span style="font-family:inherit; font-size:15px; font-style:inherit; font-variant-ligatures:inherit; font-variant-caps:inherit; font-weight:inherit; color:rgb(35,38,41)">&nbsp;</span><span style="font-family:inherit; font-style:inherit; font-variant-ligatures:inherit; font-variant-caps:inherit; font-weight:inherit; color:rgb(35,38,41); white-space:pre-wrap; font-size:13px">tpm2_flushcontext
</span><span style="font-family:inherit; font-size:15px; font-style:inherit; font-variant-ligatures:inherit; font-variant-caps:inherit; font-weight:inherit; color:rgb(35,38,41)">which was added in v4.0.&nbsp;</span><span style="font-family:inherit; font-size:15px; font-style:inherit; font-variant-ligatures:inherit; font-variant-caps:inherit; font-weight:inherit; color:rgb(35,38,41)">Is
 there any other tools in tpm2-tools 3.1.3 that can remove contexts? My goal is to free up some memory in TPM as it returned the following error:</span></div>
<div class="x_gmail-postcell x_gmail-post-layout--right" style="margin:0px; padding:0px 16px 0px 0px; border:0px; font-variant-numeric:inherit; font-variant-east-asian:inherit; font-stretch:inherit; line-height:inherit; font-size:13px; vertical-align:top; box-sizing:inherit; width:auto; min-width:0px; color:rgb(35,38,41)">
<div class="x_gmail-s-prose x_gmail-js-post-body" style="margin:0px; padding:0px; border:0px; font-style:inherit; font-variant:inherit; font-weight:inherit; font-stretch:inherit; font-size:15px; vertical-align:baseline; box-sizing:inherit; width:659px">
<pre style="margin-top:0px; margin-bottom:0px; padding:12px; border:0px; font-style:inherit; font-variant:inherit; font-weight:inherit; font-stretch:inherit; line-height:1.30769; font-size:13px; vertical-align:baseline; box-sizing:inherit; width:auto; max-height:600px; overflow:auto; border-radius:5px"><code style="margin:0px; padding:0px; border:0px; font-style:inherit; font-variant:inherit; font-weight:inherit; font-stretch:inherit; line-height:inherit; vertical-align:baseline; box-sizing:inherit; background-color:transparent; white-space:inherit; border-radius:0px">$ tpm2_rc_decode 0x902
error layer
  hex: 0x0
  identifier: TSS2_TPM_RC_LAYER
  description: Error produced by the TPM
format 0 warning code
  hex: 0x02
  name: TPM2_RC_OBJECT_MEMORY
  description: out of memory for object contexts</code></pre>
<pre style="margin-top:0px; margin-bottom:0px; padding:12px; border:0px; font-style:inherit; font-variant:inherit; font-weight:inherit; font-stretch:inherit; line-height:1.30769; font-size:13px; vertical-align:baseline; box-sizing:inherit; width:auto; max-height:600px; overflow:auto; border-radius:5px">--</pre>
<pre style="margin-top:0px; margin-bottom:0px; padding:12px; border:0px; font-style:inherit; font-variant:inherit; font-weight:inherit; font-stretch:inherit; line-height:1.30769; font-size:13px; vertical-align:baseline; box-sizing:inherit; width:auto; max-height:600px; overflow:auto; border-radius:5px">Thanks</pre>
<pre style="margin-top:0px; margin-bottom:0px; padding:12px; border:0px; font-style:inherit; font-variant:inherit; font-weight:inherit; font-stretch:inherit; line-height:1.30769; font-size:13px; vertical-align:baseline; box-sizing:inherit; width:auto; max-height:600px; overflow:auto; border-radius:5px">Han</pre>
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