Module: X402::RequestBinding

Defined in:
lib/x402/protocol/request_binding.rb

Overview

Computes canonical hashes of request headers and body for binding challenges and proofs to the actual HTTP request.

Class Method Summary collapse

Class Method Details

.body_sha256(rack_request) ⇒ Object

Compute SHA-256 hex digest of the request body. Returns the hash of an empty string if no body is present.



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# File 'lib/x402/protocol/request_binding.rb', line 13

def body_sha256(rack_request)
  return sha256_hex("") unless rack_request.body

  rack_request.body.rewind if rack_request.body.respond_to?(:rewind)
  body = rack_request.body.read || ""
  rack_request.body.rewind if rack_request.body.respond_to?(:rewind)
  sha256_hex(body)
end

.headers_sha256(_rack_request) ⇒ Object

Compute SHA-256 hex digest of canonical request headers. For v1, this is the empty string hash (no headers bound).



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# File 'lib/x402/protocol/request_binding.rb', line 24

def headers_sha256(_rack_request)
  sha256_hex("")
end

.sha256_hex(data) ⇒ Object 



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# File 'lib/x402/protocol/request_binding.rb', line 28

def sha256_hex(data)
  OpenSSL::Digest::SHA256.hexdigest(data)
end