crypto

package
v0.3.0 Latest Latest
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 Go to latest Published: May 7, 2026 License: AGPL-3.0 Imports: 6 Imported by: 0

Documentation

Overview

Package crypto provides AES-256-GCM encryption with versioned keys for rotation.

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

This section is empty.

Types

type Encryptor 

type Encryptor struct {
	// contains filtered or unexported fields
}

Encryptor encrypts and decrypts data using AES-256-GCM with versioned keys. The version byte prefix allows decryption with old keys during rotation.

func New 

func New(currentKey []byte, oldKeys ...[]byte) *Encryptor

New creates an Encryptor. currentKey is the active encryption key (32 bytes for AES-256). oldKeys are previous keys that can still decrypt but won't be used for new encryptions. Panics if any key is not exactly 32 bytes.

func (*Encryptor) Decrypt 

func (e *Encryptor) Decrypt(encoded string) (string, error)

Decrypt decodes a base64-encoded string and decrypts it using the key identified by the version byte prefix.

func (*Encryptor) Encrypt 

func (e *Encryptor) Encrypt(plaintext string) (string, error)

Encrypt encrypts plaintext and returns a base64-encoded string containing: version byte + nonce + ciphertext.

Source Files

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