Description and usage of CryptographicHashContent processor:

Calculates a cryptographic hash value for the flowfile content using the given algorithm and writes it to an output attribute. Please refer to https://csrc.nist.gov/Projects/Hash-Functions/NIST-Policy-on-Hash-Functions for help to decide which algorithm to use.

Tags:

content, hash, sha, blake2, md5, cryptography

Properties:

In the list below, the names of required properties appear in bold. Any other properties (not in bold) are considered optional. The table also indicates any default values.

Name	Default Value	Allowable Values	Description
Fail if the content is empty	false	* true * false	Route to failure if the content is empty. While hashing an empty value is valid, some flows may want to detect empty input.
Hash Algorithm	SHA-256	* MD2  * MD5   * SHA-1   * SHA-224   * SHA-256   * SHA-384   * SHA-512   * SHA-512/224  * SHA-512/256   * SHA3-224   * SHA3-256   * SHA3-384   * SHA3-512   * BLAKE2-160   * BLAKE2-256   * BLAKE2-384   * BLAKE2-512	The hash algorithm to use. Note that not all of the algorithms available are recommended for use (some are provided for legacy compatibility). There are many things to consider when picking an algorithm; it is recommended to use the most secure algorithm possible.

Relationships:

Name	Description
success	Used for flowfiles that have a hash value added
failure	Used for flowfiles that have no content if the 'fail on empty' setting is enabled

Reads Attributes:

None specified.

Writes Attributes:

Name	Description
content_<algorithm>	This processor adds an attribute whose value is the result of hashing the flowfile content. The name of this attribute is specified by the value of the algorithm, e.g. 'content_SHA-256'.

State management:

This component does not store state.

Restricted:

This component is not restricted.

Input requirement:

This component requires an incoming relationship.

System Resource Considerations:

None specified.