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Task 1 Create Google Private Key

Download drive-download-20180207T222536Z-001.zip and extract to drive C:\CS-1630\20180208

and it should look like this


and there are 2 PEM file in drive-download-20180207T222536Z-001\

open command line tool, and change path

C:\Users\Richard Cheng>cd c:\

c:\>cd "Program Files (x86)"

c:\Program Files (x86)>cd GnuWin32

c:\Program Files (x86)\GnuWin32>cd bin

c:\Program Files (x86)\GnuWin32\bin>openssl.exe ec -noout -text -in "c:\CS-1630\20180208\drive-download-20180207T222536Z-001\PRIVATE.key.pem"


There are 2 part in this private key, and we need to load priv part to reader, 

RSA Private Key:

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

RSA Public Key:

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

RSA Exp:

010001

Long term private key

00826d17e50767b165b0e4d9e332f8d1d1e20224284fb4daf1e50a03246e70797d

Padding “00” + Version(ex. 00 00 00 01) + Long term private key to 256 bytes data

0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000100826D17E50767B165B0E4D9E332F8D1D1E20224284FB4DAF1E50A03246E70797D

Calculate SHA-256 for data

A0271BD196D3C0C458CB5FD6D9EDAB128EB3CD24BC27F2DBE6447C755F630943


Use RSA private key encrypt data

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

Append encrypt data and sha-256 data

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