38 lines
1.4 KiB
Markdown
38 lines
1.4 KiB
Markdown
---
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layout: "functions"
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page_title: "base64sha256 - Functions - Configuration Language"
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sidebar_current: "docs-funcs-crypto-base64sha256"
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description: |-
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The base64sha256 function computes the SHA256 hash of a given string and
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encodes it with Base64.
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---
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# `base64sha256` Function
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-> **Note:** This page is about Terraform 0.12 and later. For Terraform 0.11 and
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earlier, see
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[0.11 Configuration Language: Interpolation Syntax](../../configuration-0-11/interpolation.html).
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`base64sha256` computes the SHA256 hash of a given string and encodes it with
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Base64. This is not equivalent to base64encode(sha256512("test")) since sha512()
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returns hexadecimal representation.
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The given string is first encoded as UTF-8 and then the SHA256 algorithm is applied
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as defined in [RFC 4634](https://tools.ietf.org/html/rfc4634). The raw hash is
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then encoded with Base64 before returning. Terraform uses the "standard" Base64
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alphabet as defined in [RFC 4648 section 4](https://tools.ietf.org/html/rfc4648#section-4).
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## Examples
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```
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> base64sha256("hello world")
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uU0nuZNNPgilLlLX2n2r+sSE7+N6U4DukIj3rOLvzek=
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```
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## Related Functions
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* [`filebase64sha256`](./filebase64sha256.html) calculates the same hash from
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the contents of a file rather than from a string value.
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* [`sha256`](./sha256.html) calculates the same hash but returns the result
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in a more-verbose hexadecimal encoding.
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