Module: JsonJws::Sign

Included in:
JSON_JWS
Defined in:
lib/json_jws/sign.rb

Instance Method Summary collapse

Instance Method Details

#add_signature(jws, jwk, protected_header) ⇒ Object 



14
15
16
17
18
19
20
21
22
23
24
25
 
# File 'lib/json_jws/sign.rb', line 14

def add_signature(jws, jwk, protected_header)
  encoded_protected_header = Base64.urlsafe_encode64(protected_header.to_json)
  raw_payload = Base64.decode64(jws["payload"])
  protected_header, signature = build_signature(jwk, protected_header, raw_payload)

  jws["signatures"] << {
    "protected" => protected_header,
    "signature" => signature,
  }

  jws
end

#build_signature(jwk, header, payload) ⇒ Object 



6
7
8
9
10
11
12
 
# File 'lib/json_jws/sign.rb', line 6

def build_signature(jwk, header, payload)
  payload = payload.to_json unless payload.is_a?(String)
  raise "header must be a Hash" unless header.is_a?(Hash)

  jose_signed_map = JOSE::JWS.sign(jwk, payload, header)
  jose_signed_map.to_hash.slice("protected", "signature").values
end