security

package

v0.0.7 Latest Latest Go to latest Published: Oct 27, 2026 License: MIT Imports: 5 Imported by: 0

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Valid go.mod file
Redistributable license
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Repository

github.com/blechschmidt/cloop

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Documentation ¶

Overview ¶

Package security provides cryptographic utilities for cloop's data integrity.

Index ¶

Variables
func RedactAPIKey(s string) string
func Sign(key string, data []byte) string
func SigningKey() string
func Verify(key string, data []byte, sig string) error

Constants ¶

This section is empty.

Variables ¶

View Source

var ErrInvalidSignature = errors.New("state file signature mismatch: file may have been tampered with")

ErrInvalidSignature is returned when HMAC verification fails.

Functions ¶

func RedactAPIKey ¶

func RedactAPIKey(s string) string

RedactAPIKey masks all but the first 4 and last 4 characters of a secret. Values of 8 or fewer characters are fully masked as "****". Used to ensure sensitive values are never logged in plaintext.

func Sign ¶

func Sign(key string, data []byte) string

Sign computes HMAC-SHA256 of data using key and returns the hex-encoded digest.

func SigningKey ¶

func SigningKey() string

SigningKey returns the HMAC key from the environment variable CLOOP_STATE_HMAC_KEY. Returns an empty string when the variable is not set (signing disabled).

func Verify ¶

func Verify(key string, data []byte, sig string) error

Verify returns nil when the provided sig matches HMAC-SHA256(key, data). Returns ErrInvalidSignature otherwise.

Types ¶

This section is empty.

Source Files ¶

View all Source files

hmac.go

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