Class: DaffyLib::CachingEncryptor
- Inherits:
-
Object
- Object
- DaffyLib::CachingEncryptor
show all
- Defined in:
- lib/daffy_lib/caching_encryptor.rb
Defined Under Namespace
Classes: CachingEncryptorException, DecryptionFailedException, EncryptionFailedException, InvalidParameterException
Class Method Summary
collapse
Class Method Details
.zt_decrypt(*args, &block) ⇒ Object
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# File 'lib/daffy_lib/caching_encryptor.rb', line 41
def self.zt_decrypt(*args, &block)
value, expires_in, cmk_key_id = validate_decrypt_params(*args)
ciphertext_info = JSON.parse(value, symbolize_names: true)
return legacy_decrypt(*args, block) unless ciphertext_info.key?(:key_guid)
key_guid = ciphertext_info[:key_guid]
ciphertext = Base64.decode64(ciphertext_info[:data])
nonce = Base64.decode64(ciphertext_info[:nonce])
key_info = DaffyLib::EncryptionKey.find_by!(guid: key_guid)
kms = DaffyLib::KeyManagementService.new(key_info.partition_guid, expires_in, cmk_key_id)
plaintext_key = kms.retrieve_plaintext_key(key_info)
PorkyLib::Symmetric.instance.decrypt_with_key(
ciphertext,
plaintext_key,
nonce
).plaintext
rescue JSON::JSONError => e
Rails.logger.error("JSON parse error on decryption: #{e.message}")
raise DecryptionFailedException
rescue ActiveRecord::RecordNotFound => e
Rails.logger.error("Failed to find encryption key for guid #{key_guid} on decrypt: #{e.message}")
raise DecryptionFailedException
rescue DaffyLib::KeyManagementService::KeyManagementServiceException => e
Rails.logger.error("KeyManagementService exception on decrypt: #{e.message}")
raise DecryptionFailedException
rescue RbNaCl::CryptoError, RbNaCl::LengthError => e
Rails.logger.error("RbNaCl exception on decrypt: #{e.message}")
raise DecryptionFailedException
end
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.zt_encrypt(*args, &_block) ⇒ Object
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# File 'lib/daffy_lib/caching_encryptor.rb', line 10
def self.zt_encrypt(*args, &_block)
data, partition_guid, encryption_epoch, expires_in, cmk_key_id = validate_encrypt_params(*args)
kms = DaffyLib::KeyManagementService.new(partition_guid, expires_in, cmk_key_id)
key_info = kms.find_or_create_encryption_key(encryption_epoch)
plaintext_key = kms.retrieve_plaintext_key(key_info)
encryption_result = PorkyLib::Symmetric.instance.encrypt_with_key(data, plaintext_key)
{
key_guid: key_info.guid,
key: key_info.encrypted_data_encryption_key,
data: Base64.encode64(encryption_result.ciphertext),
nonce: Base64.encode64(encryption_result.nonce)
}.to_json
rescue DaffyLib::KeyManagementService::KeyManagementServiceException => e
Rails.logger.error("KeyManagementService exception on encrypt: #{e.message}")
raise EncryptionFailedException
rescue RbNaCl::CryptoError, RbNaCl::LengthError => e
Rails.logger.error("RbNaCl exception on encrypt: #{e.message}")
raise EncryptionFailedException
end
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