tpm2-{pcrread, pcrreset, pcrextend}: add page (#21601)

Co-authored-by: Managor <42655600+Managor@users.noreply.github.com>
Co-authored-by: Ivan Baluta <ivanbaluta.dev@gmail.com>

pages/common/tpm2-pcrextend.md

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+# tpm2 pcrextend
+
+> Extends a PCR.
+> More information: <https://manned.org/tpm2_pcrextend>.
+
+- Extend the PCR 16 value of the sha1 bank:
+
+`tpm2 pcrextend 16:sha1={{f1d2d2f924e986ac86fdf7b36c94bcdf32beec15}}`
+
+- Extend the PCR 16 value of the sha1 and sha256 banks value:
+
+`tpm2 pcrextend 16:sha1={{f1d2d2f924e986ac86fdf7b36c94bcdf32beec15}},sha256={{b5bb9d8014a0f9b1d61e21e796d78dccdf1352f23cd32812f4850b878ae4944c}}`
+
+- Extend the PCR 16 value of the sha1 bank and PCR 23 of the sha256 bank:
+
+`tpm2 pcrextend 16:sha1={{f1d2d2f924e986ac86fdf7b36c94bcdf32beec15}} 23:sha256={{b5bb9d8014a0f9b1d61e21e796d78dccdf1352f23cd32812f4850b878ae4944c}}`

pages/common/tpm2-pcrread.md

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+# tpm2 pcrread
+
+> Read the PCR values from a TPM.
+> More information: <https://manned.org/tpm2_pcrread>.
+
+- Read all PCR values:
+
+`tpm2 pcrread`
+
+- Read all PCR values of the sha256 bank:
+
+`tpm2 pcrread sha256:all`
+
+- Read specific PCR values from multiple banks and write them to a file:
+
+`tpm2 pcrread {{[-o|--output]}} {{path/to/file}} {{sha1:16,17,18+sha256:16,17,18}}`

pages/common/tpm2-pcrreset.md

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+# tpm2 pcrreset
+
+> Reset one or more PCR banks.
+> Note: On operating system's locality, only PCR 16 and 23 can be reset.
+> More information: <https://manned.org/tpm2_pcrreset>.
+
+- Reset the PCR 23 banks:
+
+`tpm2 pcrreset 23`
+
+- Reset the PCR 16 and 23 banks:
+
+`tpm2 pcrreset 16 23`

pages/common/tpm2.md

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+# tpm2
+
+> Run various tpm2-tools via a single unified executable.
+> Some subcommands such as `pcrread`, `pcrreset`, etc. have their own usage documentation.
+> More information: <https://manned.org/tpm2>.
+
+- Reset the PCR 16 banks:
+
+`tpm2 pcrreset 16`
+
+- Extend the PCR 16 sha1 bank with `f1d2d2f924e986ac86fdf7b36c94bcdf32beec15`:
+
+`tpm2 pcrextend 16:sha1=f1d2d2f924e986ac86fdf7b36c94bcdf32beec15`
+
+- Read the PCR 16 sha1 bank:
+
+`tpm2 pcrread sha1:16`
+
+- Run a subcommand in verbose mode:
+
+`tpm2 {{[-V|--verbose]}} {{subcommand}}`
+
+- Run a subcommand without writing to `stdout`:
+
+`tpm2 {{[-Q|--quiet]}} {{subcommand}}`
+
+- Display help:
+
+`tpm2 {{[-h|--help]}}`