feature/HSM-P256-Signature-asn1-to-raw

[sujaygkulkarni-nxp]

Problem

• HSM P256 signature is in ASN.1 DER format

Change overview

Converting HSM P256 signature from ASN.1 DER format to raw format

Testing

• Tested using CHIPCryptoPALTest unit tests

[bzbarsky-apple]

Approved, if the existing review comments get fixed.

[github-actions]

Size increase report for "esp32-example-build" from 762a204

File	Section	File	VM
chip-lock-app.elf	.flash.text	64	64
chip-temperature-measurement-app.elf	.flash.text	60	60
chip-shell.elf	.flash.text	-32	-32

Full report output

BLOAT REPORT

Files found only in the build output:
    report.csv

Comparing ./master_artifact/chip-persistent-storage.elf and ./pull_artifact/chip-persistent-storage.elf:

sections,vmsize,filesize

Comparing ./master_artifact/chip-lock-app.elf and ./pull_artifact/chip-lock-app.elf:

sections,vmsize,filesize
.flash.text,64,64
[Unmapped],0,-64

Comparing ./master_artifact/chip-pigweed-app.elf and ./pull_artifact/chip-pigweed-app.elf:

sections,vmsize,filesize

Comparing ./master_artifact/chip-all-clusters-app.elf and ./pull_artifact/chip-all-clusters-app.elf:

sections,vmsize,filesize

Comparing ./master_artifact/chip-temperature-measurement-app.elf and ./pull_artifact/chip-temperature-measurement-app.elf:

sections,vmsize,filesize
.flash.text,60,60
[Unmapped],0,-60

Comparing ./master_artifact/chip-ipv6only-app.elf and ./pull_artifact/chip-ipv6only-app.elf:

sections,vmsize,filesize

Comparing ./master_artifact/chip-shell.elf and ./pull_artifact/chip-shell.elf:

sections,vmsize,filesize
[Unmapped],0,32
.flash.text,-32,-32

[sujaygkulkarni-nxp]

@tcarmelveilleux @andy31415 @emargolis @yufengwangca @woody-apple @bzbarsky-apple Could you please merge this PR ?