cipher

Documentation

Index

• Constants
• type AesContentCipher
  • func NewAES(alg jwa.ContentEncryptionAlgorithm) (*AesContentCipher, error)
  • func (c AesContentCipher) Decrypt(cek, iv, ciphertxt, tag, aad []byte) (plaintext []byte, err error)
  • func (c AesContentCipher) Encrypt(cek, plaintext, aad []byte) (iv, ciphertxt, tag []byte, err error)
  • func (c AesContentCipher) KeySize() int
  • func (c AesContentCipher) TagSize() int
• type ContentCipher
• type Fetcher

Constants

const (
	TagSize = 16
)

Types

type AesContentCipher

type AesContentCipher struct {
	NonceGenerator keygen.Generator
	// contains filtered or unexported fields
}

AesContentCipher represents a cipher based on AES

func NewAES

func NewAES(alg jwa.ContentEncryptionAlgorithm) (*AesContentCipher, error)

func (AesContentCipher) Decrypt

func (c AesContentCipher) Decrypt(cek, iv, ciphertxt, tag, aad []byte) (plaintext []byte, err error)

func (AesContentCipher) Encrypt

func (c AesContentCipher) Encrypt(cek, plaintext, aad []byte) (iv, ciphertxt, tag []byte, err error)

func (AesContentCipher) KeySize

func (c AesContentCipher) KeySize() int

func (AesContentCipher) TagSize

func (c AesContentCipher) TagSize() int

type ContentCipher

type ContentCipher interface {
	KeySize() int
	Encrypt(cek, aad, plaintext []byte) ([]byte, []byte, []byte, error)
	Decrypt(cek, iv, aad, ciphertext, tag []byte) ([]byte, error)
}

ContentCipher knows how to encrypt/decrypt the content given a content encryption key and other data

type Fetcher

type Fetcher interface {
	Fetch([]byte) (cipher.AEAD, error)
}