| --- |
| 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. |
