Generate a Hash of the Claim Set

Generate a Base64-encoded SHA-256 hash of these header fields:
Headers
Header Field
Description
iat
The date and time of the message origin. Date formatting is defined by RFC 7231, Section 7.1.1.1.
digest
A Base64 encoded hash of the message payload.
The
digest
 field is not included in a GET request.
digestAlgorithm
The algorithm used to hash the message payload.
The message payload should be hashed using the SHA-256 algorithm.
The
digestAlgorithm
 field is not included in a GET request.
Follow these steps to generate the hash:
  1. Generate the SHA-256 hash of the fields in JSON format.
  2. Encode the hashed string to Base64.
  3. Add the message body hash to the
    digest
     header field.
Creating a Message Hash Using Command Line Tools
Generate the SHA-256 hash using the
shasum
 tool.
echo -n "{"iat":"Thur, 15 June 2017 08:12:31 GMT","digest":"tP7hDajF4f6q0ysBQCHgef5K/PBq8iMASvlEARp8tl=",
					"digestAlgorithm":"SHA-256"}" | shasum -a 256
Base64 Encoding a Message Hash Using Command Line Tools
Generate the SHA-256 hash using the
base64
 tool.
echo -n "5995a4f27b4b9256a94cf54489a9ef691d8dc8a590d322780d3b202cfa2f078f" | base64
Add the message body hash to the
digest
 header field
NTk5NWE0ZjI3YjRiOTI1NmE5NGNmNTQ0ODlhOWVmNjkxZDhkYzhhNTkwZDMyMjc4MGQzYjIwMmNmYTJmMDc4Zg==