decrypt-data¶

Description¶

Decrypts ciphertext data to plaintext using symmetric, asymmetric, or DUKPT data encryption key. For more information, see Decrypt data in the Amazon Web Services Payment Cryptography User Guide .

You can use an encryption key generated within Amazon Web Services Payment Cryptography, or you can import your own encryption key by calling ImportKey . For this operation, the key must have KeyModesOfUse set to Decrypt . In asymmetric decryption, Amazon Web Services Payment Cryptography decrypts the ciphertext using the private component of the asymmetric encryption key pair. For data encryption outside of Amazon Web Services Payment Cryptography, you can export the public component of the asymmetric key pair by calling GetPublicCertificate .

For symmetric and DUKPT decryption, Amazon Web Services Payment Cryptography supports TDES and AES algorithms. For asymmetric decryption, Amazon Web Services Payment Cryptography supports RSA . When you use DUKPT, for TDES algorithm, the ciphertext data length must be a multiple of 16 bytes. For AES algorithm, the ciphertext data length must be a multiple of 32 bytes.

For information about valid keys for this operation, see Understanding key attributes and Key types for specific data operations in the Amazon Web Services Payment Cryptography User Guide .

Cross-account use : This operation can’t be used across different Amazon Web Services accounts.

Related operations:

Synopsis¶

  decrypt-data
--cipher-text <value>
--decryption-attributes <value>
--key-identifier <value>
[--cli-input-json | --cli-input-yaml]
[--generate-cli-skeleton <value>]
[--debug]
[--endpoint-url <value>]
[--no-verify-ssl]
[--no-paginate]
[--output <value>]
[--query <value>]
[--profile <value>]
[--region <value>]
[--version <value>]
[--color <value>]
[--no-sign-request]
[--ca-bundle <value>]
[--cli-read-timeout <value>]
[--cli-connect-timeout <value>]
[--cli-binary-format <value>]
[--no-cli-pager]
[--cli-auto-prompt]
[--no-cli-auto-prompt]

Options¶

--cipher-text (string)

The ciphertext to decrypt.

--decryption-attributes (tagged union structure)

The encryption key type and attributes for ciphertext decryption.

Note
This is a Tagged Union structure. Only one of the following top level keys can be set: Asymmetric, Dukpt, Symmetric.

Asymmetric -> (structure)

Parameters for plaintext encryption using asymmetric keys.

PaddingType -> (string)

The padding to be included with the data.

Dukpt -> (structure)

Parameters that are required to encrypt plaintext data using DUKPT.

DukptKeyDerivationType -> (string)

The key type encrypted using DUKPT from a Base Derivation Key (BDK) and Key Serial Number (KSN). This must be less than or equal to the strength of the BDK. For example, you can’t use AES_128 as a derivation type for a BDK of AES_128 or TDES_2KEY

DukptKeyVariant -> (string)

The type of use of DUKPT, which can be incoming data decryption, outgoing data encryption, or both.

InitializationVector -> (string)

An input to cryptographic primitive used to provide the intial state. Typically the InitializationVector must have a random or psuedo-random value, but sometimes it only needs to be unpredictable or unique. If you don’t provide a value, Amazon Web Services Payment Cryptography generates a random value.

KeySerialNumber -> (string)

The unique identifier known as Key Serial Number (KSN) that comes from an encrypting device using DUKPT encryption method. The KSN is derived from the encrypting device unique identifier and an internal transaction counter.

Mode -> (string)

The block cipher mode of operation. Block ciphers are designed to encrypt a block of data of fixed size, for example, 128 bits. The size of the input block is usually same as the size of the encrypted output block, while the key length can be different. A mode of operation describes how to repeatedly apply a cipher’s single-block operation to securely transform amounts of data larger than a block.

The default is CBC.

Symmetric -> (structure)

Parameters that are required to perform encryption and decryption using symmetric keys.

InitializationVector -> (string)

An input to cryptographic primitive used to provide the intial state. The InitializationVector is typically required have a random or psuedo-random value, but sometimes it only needs to be unpredictable or unique. If a value is not provided, Amazon Web Services Payment Cryptography generates a random value.

Mode -> (string)

The block cipher mode of operation. Block ciphers are designed to encrypt a block of data of fixed size (for example, 128 bits). The size of the input block is usually same as the size of the encrypted output block, while the key length can be different. A mode of operation describes how to repeatedly apply a cipher’s single-block operation to securely transform amounts of data larger than a block.

PaddingType -> (string)

The padding to be included with the data.

Shorthand Syntax:

Asymmetric={PaddingType=string},Dukpt={DukptKeyDerivationType=string,DukptKeyVariant=string,InitializationVector=string,KeySerialNumber=string,Mode=string},Symmetric={InitializationVector=string,Mode=string,PaddingType=string}

JSON Syntax:

{
  "Asymmetric": {
    "PaddingType": "PKCS1"|"OAEP_SHA1"|"OAEP_SHA256"|"OAEP_SHA512"
  },
  "Dukpt": {
    "DukptKeyDerivationType": "TDES_2KEY"|"TDES_3KEY"|"AES_128"|"AES_192"|"AES_256",
    "DukptKeyVariant": "BIDIRECTIONAL"|"REQUEST"|"RESPONSE",
    "InitializationVector": "string",
    "KeySerialNumber": "string",
    "Mode": "ECB"|"CBC"
  },
  "Symmetric": {
    "InitializationVector": "string",
    "Mode": "ECB"|"CBC"|"CFB"|"CFB1"|"CFB8"|"CFB64"|"CFB128"|"OFB",
    "PaddingType": "PKCS1"|"OAEP_SHA1"|"OAEP_SHA256"|"OAEP_SHA512"
  }
}

--key-identifier (string)

The keyARN of the encryption key that Amazon Web Services Payment Cryptography uses for ciphertext decryption.

--cli-input-json | --cli-input-yaml (string) Reads arguments from the JSON string provided. The JSON string follows the format provided by --generate-cli-skeleton. If other arguments are provided on the command line, those values will override the JSON-provided values. It is not possible to pass arbitrary binary values using a JSON-provided value as the string will be taken literally. This may not be specified along with --cli-input-yaml.

--generate-cli-skeleton (string) Prints a JSON skeleton to standard output without sending an API request. If provided with no value or the value input, prints a sample input JSON that can be used as an argument for --cli-input-json. Similarly, if provided yaml-input it will print a sample input YAML that can be used with --cli-input-yaml. If provided with the value output, it validates the command inputs and returns a sample output JSON for that command. The generated JSON skeleton is not stable between versions of the AWS CLI and there are no backwards compatibility guarantees in the JSON skeleton generated.

Global Options¶

--debug (boolean)

Turn on debug logging.

--endpoint-url (string)

Override command’s default URL with the given URL.

--no-verify-ssl (boolean)

By default, the AWS CLI uses SSL when communicating with AWS services. For each SSL connection, the AWS CLI will verify SSL certificates. This option overrides the default behavior of verifying SSL certificates.

--no-paginate (boolean)

Disable automatic pagination.

--output (string)

The formatting style for command output.

json
text
table
yaml
yaml-stream

--query (string)

A JMESPath query to use in filtering the response data.

--profile (string)

Use a specific profile from your credential file.

--region (string)

The region to use. Overrides config/env settings.

--version (string)

Display the version of this tool.

--color (string)

Turn on/off color output.

on
off
auto

--no-sign-request (boolean)

Do not sign requests. Credentials will not be loaded if this argument is provided.

--ca-bundle (string)

The CA certificate bundle to use when verifying SSL certificates. Overrides config/env settings.

--cli-read-timeout (int)

The maximum socket read time in seconds. If the value is set to 0, the socket read will be blocking and not timeout. The default value is 60 seconds.

--cli-connect-timeout (int)

The maximum socket connect time in seconds. If the value is set to 0, the socket connect will be blocking and not timeout. The default value is 60 seconds.

--cli-binary-format (string)

The formatting style to be used for binary blobs. The default format is base64. The base64 format expects binary blobs to be provided as a base64 encoded string. The raw-in-base64-out format preserves compatibility with AWS CLI V1 behavior and binary values must be passed literally. When providing contents from a file that map to a binary blob fileb:// will always be treated as binary and use the file contents directly regardless of the cli-binary-format setting. When using file:// the file contents will need to properly formatted for the configured cli-binary-format.

base64
raw-in-base64-out

--no-cli-pager (boolean)

Disable cli pager for output.

--cli-auto-prompt (boolean)

Automatically prompt for CLI input parameters.

--no-cli-auto-prompt (boolean)

Disable automatically prompt for CLI input parameters.

Output¶

KeyArn -> (string)

The keyARN of the encryption key that Amazon Web Services Payment Cryptography uses for ciphertext decryption.

KeyCheckValue -> (string)

The key check value (KCV) of the encryption key. The KCV is used to check if all parties holding a given key have the same key or to detect that a key has changed. Amazon Web Services Payment Cryptography calculates the KCV by using standard algorithms, typically by encrypting 8 or 16 bytes or “00” or “01” and then truncating the result to the first 3 bytes, or 6 hex digits, of the resulting cryptogram.

PlainText -> (string)

The decrypted plaintext data.

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