terraform/website/docs/language/functions/base64sha256.mdx

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---
page_title: base64sha256 - Functions - Configuration Language
description: |-
The base64sha256 function computes the SHA256 hash of a given string and
encodes it with Base64.
---
# `base64sha256` Function
`base64sha256` computes the SHA256 hash of a given string and encodes it with
Base64. This is not equivalent to `base64encode(sha256("test"))` since `sha256()`
returns hexadecimal representation.
The given string is first encoded as UTF-8 and then the SHA256 algorithm is applied
as defined in [RFC 4634](https://tools.ietf.org/html/rfc4634). The raw hash is
then encoded with Base64 before returning. Terraform uses the "standard" Base64
alphabet as defined in [RFC 4648 section 4](https://tools.ietf.org/html/rfc4648#section-4).
## Examples
```
> base64sha256("hello world")
uU0nuZNNPgilLlLX2n2r+sSE7+N6U4DukIj3rOLvzek=
```
## Related Functions
* [`filebase64sha256`](/language/functions/filebase64sha256) calculates the same hash from
the contents of a file rather than from a string value.
* [`sha256`](/language/functions/sha256) calculates the same hash but returns the result
in a more-verbose hexadecimal encoding.