Class: AzureMediaService::ContentKey

Inherits:
Model::Base
  • Object
show all
Defined in:
lib/azure_media_service/model/content_key.rb

Constant Summary collapse

ContentKeyTypes = 
{
  CommonEncryption:        0,
  StorageEncryption:       1,
  ConfigurationEncryption: 2,
  UrlEncryption:           3,
  EnvelopeEncryption:      4
}

Instance Attribute Summary

Attributes inherited from Model::Base

#original_data

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Model::Base

create_response, #initialize, service

Constructor Details

This class inherits a constructor from AzureMediaService::Model::Base

Class Method Details

.create(content_key:, content_key_type: 4, protection_key_type: 0, name: nil) ⇒ Object 



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# File 'lib/azure_media_service/model/content_key.rb', line 13

def create(content_key:, content_key_type: 4,protection_key_type: 0, name: nil )
  id = "nb:kid:UUID:#{SecureRandom.uuid.upcase}"
  # content_key = SecureRandom.random_bytes(16)
  protection_key_id = service.get_protection_key_id(content_key_type)
  protection_key = service.get_protection_key(protection_key_id) # X.509
  x509 = OpenSSL::X509::Certificate.new(Base64.decode64(protection_key))
  public_key = x509.public_key
  encrypted_content_key = Base64.strict_encode64(public_key.public_encrypt(content_key, OpenSSL::PKey::RSA::PKCS1_OAEP_PADDING))

  # create checksum
  cipher = OpenSSL::Cipher.new('AES-128-ECB')
  cipher.encrypt
  cipher.key = content_key
  cipher.padding = 0
  encrypt_data = ""
  encrypt_data << cipher.update(protection_key_id[0,16])
  encrypt_data << cipher.final
  check_sum = Base64.strict_encode64(encrypt_data[0,8])

  post_body = {
    "Id"                  => id,
    "ContentKeyType"      => content_key_type,
    "EncryptedContentKey" => encrypted_content_key,
    "ProtectionKeyId"     => protection_key_id,
    "ProtectionKeyType"   => protection_key_type,
    "Checksum"            => check_sum,
    "Name"                => name
  }
  create_response(service.post("ContentKeys", post_body))
end

.get(content_key_id = nil) ⇒ Object 



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# File 'lib/azure_media_service/model/content_key.rb', line 44

def get(content_key_id=nil)
  service.get('ContentKeys', ContentKey, content_key_id)
end

Instance Method Details

#add_authorization_policy(policy_id) ⇒ Object 



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# File 'lib/azure_media_service/model/content_key.rb', line 49

def add_authorization_policy(policy_id)
  res = @request.put("ContentKeys('#{CGI.escape(self.Id)}')", {AuthorizationPolicyId: policy_id})
end

#delete ⇒ Object 



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# File 'lib/azure_media_service/model/content_key.rb', line 61

def delete
  begin 
    res = @request.delete("ContentKeys('#{self.Id}')")
    clear_cache
  rescue => e
    raise MediaServiceError.new(e.message)
  end
  res
end

#get_key_delivery_url(key_delivery_type) ⇒ Object

GetKeyDeliveryUrl



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# File 'lib/azure_media_service/model/content_key.rb', line 57

def get_key_delivery_url(key_delivery_type)
  @request.post("ContentKeys('#{CGI.escape(self.Id)}')/GetKeyDeliveryUrl", {KeyDeliveryType: key_delivery_type})
end