Class: Aws::S3::Encryption::Client

Inherits:
Object
  • Object
show all
Extended by:
Forwardable
Defined in:
gems/aws-sdk-s3/lib/aws-sdk-s3/encryption/client.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ Client

Creates a new encryption client. You must provide one of the following options:

  • :encryption_key
  • :kms_key_id
  • :key_provider

You may also pass any other options accepted by Client#initialize.

Parameters:

  • options (Hash) (defaults to: {})

    a customizable set of options

Options Hash (options):

  • :client (S3::Client)

    A basic S3 client that is used to make api calls. If a :client is not provided, a new Client will be constructed.

  • :encryption_key (OpenSSL::PKey::RSA, String)

    The master key to use for encrypting/decrypting all objects.

  • :kms_key_id (String)

    When you provide a :kms_key_id, then AWS Key Management Service (KMS) will be used to manage the object encryption keys. By default a KMS::Client will be constructed for KMS API calls. Alternatively, you can provide your own via :kms_client.

  • :key_provider (#key_for)

    Any object that responds to #key_for. This method should accept a materials description JSON document string and return return an encryption key.

  • :envelope_location (Symbol) — default: :metadata

    Where to store the envelope encryption keys. By default, the envelope is stored with the encrypted object. If you pass :instruction_file, then the envelope is stored in a separate object in Amazon S3.

  • :instruction_file_suffix (String) — default: '.instruction'

    When :envelope_location is :instruction_file then the instruction file uses the object key with this suffix appended.

  • :kms_client (KMS::Client)

    A default KMS::Client is constructed when using KMS to manage encryption keys.



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# File 'gems/aws-sdk-s3/lib/aws-sdk-s3/encryption/client.rb', line 226

def initialize(options = {})
  @client = extract_client(options)
  @cipher_provider = cipher_provider(options)
  @envelope_location = extract_location(options)
  @instruction_file_suffix = extract_suffix(options)
end

Instance Attribute Details

#clientS3::Client (readonly)

Returns:



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# File 'gems/aws-sdk-s3/lib/aws-sdk-s3/encryption/client.rb', line 234

def client
  @client
end

#envelope_locationSymbol<:metadata, :instruction_file> (readonly)

Returns:

  • (Symbol<:metadata, :instruction_file>)


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# File 'gems/aws-sdk-s3/lib/aws-sdk-s3/encryption/client.rb', line 241

def envelope_location
  @envelope_location
end

#instruction_file_suffixString (readonly)

Returns When #envelope_location is :instruction_file, the envelope is stored in the object with the object key suffixed by this string.

Returns:

  • (String)

    When #envelope_location is :instruction_file, the envelope is stored in the object with the object key suffixed by this string.



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# File 'gems/aws-sdk-s3/lib/aws-sdk-s3/encryption/client.rb', line 246

def instruction_file_suffix
  @instruction_file_suffix
end

#key_providerKeyProvider? (readonly)

Returns nil if you are using AWS Key Management Service (KMS).

Returns:

  • (KeyProvider, nil)

    Returns nil if you are using AWS Key Management Service (KMS).



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# File 'gems/aws-sdk-s3/lib/aws-sdk-s3/encryption/client.rb', line 238

def key_provider
  @key_provider
end

Instance Method Details

#get_object(params = {}, &block) ⇒ Types::GetObjectOutput

Note:

The :range request parameter is not yet supported.

Gets an object from Amazon S3, decrypting data locally. See Client#get_object for documentation on accepted request parameters.

Parameters:

  • params (Hash) (defaults to: {})

    a customizable set of options

Options Hash (params):

  • :instruction_file_suffix (String)

    The suffix used to find the instruction file containing the encryption envelope. You should not set this option when the envelope is stored in the object metadata. Defaults to #instruction_file_suffix.

  • :instruction_file_suffix (String)
  • :response_target (String, IO)

    Where to write response data, file path, or IO object.

  • :bucket (required, String)

    The bucket name containing the object.

    When using this API with an access point, you must direct requests to the access point hostname. The access point hostname takes the form AccessPointName-AccountId.s3-accesspoint.Region.amazonaws.com. When using this operation using an access point through the AWS SDKs, you provide the access point ARN in place of the bucket name. For more information about access point ARNs, see Using Access Points in the Amazon Simple Storage Service Developer Guide.

  • :if_match (String)

    Return the object only if its entity tag (ETag) is the same as the one specified, otherwise return a 412 (precondition failed).

  • :if_modified_since (Time, DateTime, Date, Integer, String)

    Return the object only if it has been modified since the specified time, otherwise return a 304 (not modified).

  • :if_none_match (String)

    Return the object only if its entity tag (ETag) is different from the one specified, otherwise return a 304 (not modified).

  • :if_unmodified_since (Time, DateTime, Date, Integer, String)

    Return the object only if it has not been modified since the specified time, otherwise return a 412 (precondition failed).

  • :key (required, String)

    Key of the object to get.

  • :range (String)

    Downloads the specified range bytes of an object. For more information about the HTTP Range header, see https://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.35.

    Amazon S3 doesn't support retrieving multiple ranges of data per GET request.

  • :response_cache_control (String)

    Sets the Cache-Control header of the response.

  • :response_content_disposition (String)

    Sets the Content-Disposition header of the response

  • :response_content_encoding (String)

    Sets the Content-Encoding header of the response.

  • :response_content_language (String)

    Sets the Content-Language header of the response.

  • :response_content_type (String)

    Sets the Content-Type header of the response.

  • :response_expires (Time, DateTime, Date, Integer, String)

    Sets the Expires header of the response.

  • :version_id (String)

    VersionId used to reference a specific version of the object.

  • :sse_customer_algorithm (String)

    Specifies the algorithm to use to when encrypting the object (for example, AES256).

  • :sse_customer_key (String)

    Specifies the customer-provided encryption key for Amazon S3 to use in encrypting data. This value is used to store the object and then it is discarded; Amazon S3 does not store the encryption key. The key must be appropriate for use with the algorithm specified in the x-amz-server-side​-encryption​-customer-algorithm header.

  • :sse_customer_key_md5 (String)

    Specifies the 128-bit MD5 digest of the encryption key according to RFC 1321. Amazon S3 uses this header for a message integrity check to ensure that the encryption key was transmitted without error.

  • :request_payer (String)

    Confirms that the requester knows that they will be charged for the request. Bucket owners need not specify this parameter in their requests. For information about downloading objects from requester pays buckets, see Downloading Objects in Requestor Pays Buckets in the Amazon S3 Developer Guide.

  • :part_number (Integer)

    Part number of the object being read. This is a positive integer between 1 and 10,000. Effectively performs a 'ranged' GET request for the part specified. Useful for downloading just a part of an object.

Returns:

See Also:



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# File 'gems/aws-sdk-s3/lib/aws-sdk-s3/encryption/client.rb', line 278

def get_object(params = {}, &block)
  if params[:range]
    raise NotImplementedError, '#get_object with :range not supported yet'
  end
  envelope_location, instruction_file_suffix = envelope_options(params)
  req = @client.build_request(:get_object, params)
  req.handlers.add(DecryptHandler)
  req.context[:encryption] = {
    cipher_provider: @cipher_provider,
    envelope_location: envelope_location,
    instruction_file_suffix: instruction_file_suffix,
  }
  req.send_request(target: block)
end

#put_object(params = {}) ⇒ Types::PutObjectOutput

Uploads an object to Amazon S3, encrypting data client-side. See Client#put_object for documentation on accepted request parameters.

Parameters:

  • params (Hash) (defaults to: {})

    a customizable set of options

Options Hash (params):

  • :acl (String)

    The canned ACL to apply to the object. For more information, see Canned ACL.

  • :body (String, IO)

    Object data.

  • :bucket (required, String)

    Bucket name to which the PUT operation was initiated.

    When using this API with an access point, you must direct requests to the access point hostname. The access point hostname takes the form AccessPointName-AccountId.s3-accesspoint.Region.amazonaws.com. When using this operation using an access point through the AWS SDKs, you provide the access point ARN in place of the bucket name. For more information about access point ARNs, see Using Access Points in the Amazon Simple Storage Service Developer Guide.

  • :cache_control (String)

    Can be used to specify caching behavior along the request/reply chain. For more information, see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.9.

  • :content_disposition (String)

    Specifies presentational information for the object. For more information, see http://www.w3.org/Protocols/rfc2616/rfc2616-sec19.html#sec19.5.1.

  • :content_encoding (String)

    Specifies what content encodings have been applied to the object and thus what decoding mechanisms must be applied to obtain the media-type referenced by the Content-Type header field. For more information, see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.11.

  • :content_language (String)

    The language the content is in.

  • :content_length (Integer)

    Size of the body in bytes. This parameter is useful when the size of the body cannot be determined automatically. For more information, see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.13.

  • :content_md5 (String)

    The base64-encoded 128-bit MD5 digest of the message (without the headers) according to RFC 1864. This header can be used as a message integrity check to verify that the data is the same data that was originally sent. Although it is optional, we recommend using the Content-MD5 mechanism as an end-to-end integrity check. For more information about REST request authentication, see REST Authentication.

  • :content_type (String)

    A standard MIME type describing the format of the contents. For more information, see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.17.

  • :expires (Time, DateTime, Date, Integer, String)

    The date and time at which the object is no longer cacheable. For more information, see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.21.

  • :grant_full_control (String)

    Gives the grantee READ, READ_ACP, and WRITE_ACP permissions on the object.

  • :grant_read (String)

    Allows grantee to read the object data and its metadata.

  • :grant_read_acp (String)

    Allows grantee to read the object ACL.

  • :grant_write_acp (String)

    Allows grantee to write the ACL for the applicable object.

  • :key (required, String)

    Object key for which the PUT operation was initiated.

  • :metadata (Hash<String,String>)

    A map of metadata to store with the object in S3.

  • :server_side_encryption (String)

    The server-side encryption algorithm used when storing this object in Amazon S3 (for example, AES256, aws:kms).

  • :storage_class (String)

    If you don't specify, S3 Standard is the default storage class. Amazon S3 supports other storage classes.

  • :website_redirect_location (String)

    If the bucket is configured as a website, redirects requests for this object to another object in the same bucket or to an external URL. Amazon S3 stores the value of this header in the object metadata. For information about object metadata, see Object Key and Metadata.

    In the following example, the request header sets the redirect to an object (anotherPage.html) in the same bucket:

    x-amz-website-redirect-location: /anotherPage.html

    In the following example, the request header sets the object redirect to another website:

    x-amz-website-redirect-location: http://www.example.com/

    For more information about website hosting in Amazon S3, see Hosting Websites on Amazon S3 and How to Configure Website Page Redirects.

  • :sse_customer_algorithm (String)

    Specifies the algorithm to use to when encrypting the object (for example, AES256).

  • :sse_customer_key (String)

    Specifies the customer-provided encryption key for Amazon S3 to use in encrypting data. This value is used to store the object and then it is discarded; Amazon S3 does not store the encryption key. The key must be appropriate for use with the algorithm specified in the x-amz-server-side​-encryption​-customer-algorithm header.

  • :sse_customer_key_md5 (String)

    Specifies the 128-bit MD5 digest of the encryption key according to RFC 1321. Amazon S3 uses this header for a message integrity check to ensure that the encryption key was transmitted without error.

  • :ssekms_key_id (String)

    If x-amz-server-side-encryption is present and has the value of aws:kms, this header specifies the ID of the AWS Key Management Service (AWS KMS) symmetrical customer managed customer master key (CMK) that was used for the object.

    If the value of x-amz-server-side-encryption is aws:kms, this header specifies the ID of the symmetric customer managed AWS KMS CMK that will be used for the object. If you specify x-amz-server-side-encryption:aws:kms, but do not provide x-amz-server-side-encryption-aws-kms-key-id, Amazon S3 uses the AWS managed CMK in AWS to protect the data.

  • :ssekms_encryption_context (String)

    Specifies the AWS KMS Encryption Context to use for object encryption. The value of this header is a base64-encoded UTF-8 string holding JSON with the encryption context key-value pairs.

  • :request_payer (String)

    Confirms that the requester knows that they will be charged for the request. Bucket owners need not specify this parameter in their requests. For information about downloading objects from requester pays buckets, see Downloading Objects in Requestor Pays Buckets in the Amazon S3 Developer Guide.

  • :tagging (String)

    The tag-set for the object. The tag-set must be encoded as URL Query parameters. (For example, "Key1=Value1")

  • :object_lock_mode (String)

    The Object Lock mode that you want to apply to this object.

  • :object_lock_retain_until_date (Time, DateTime, Date, Integer, String)

    The date and time when you want this object's Object Lock to expire.

  • :object_lock_legal_hold_status (String)

    Specifies whether a legal hold will be applied to this object. For more information about S3 Object Lock, see Object Lock.

Returns:

See Also:



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# File 'gems/aws-sdk-s3/lib/aws-sdk-s3/encryption/client.rb', line 254

def put_object(params = {})
  req = @client.build_request(:put_object, params)
  req.handlers.add(EncryptHandler, priority: 95)
  req.context[:encryption] = {
    cipher_provider: @cipher_provider,
    envelope_location: @envelope_location,
    instruction_file_suffix: @instruction_file_suffix,
  }
  req.send_request
end