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# frozen_string_literal: true
module Aws
module S3
module Encryption
# This module defines the interface required for a {Client#key_provider}.
# A key provider is any object that:
#
# * Responds to {#encryption_materials} with an {Materials} object.
#
# * Responds to {#key_for}, receiving a JSON document String,
# returning an encryption key. The returned encryption key
# must be one of:
#
# * `OpenSSL::PKey::RSA` - for asymmetric encryption
# * `String` - 32, 24, or 16 bytes long, for symmetric encryption
#
module KeyProvider
# @return [Materials]
def encryption_materials; end
# @param [String<JSON>] materials_description
# @return [OpenSSL::PKey::RSA, String] encryption_key
def key_for(materials_description); end
end
end
end
end
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