Source file src/github.com/lestrrat-go/jwx/jwe/internal/cipher/interface.go

Documentation: github.com/lestrrat-go/jwx/jwe/internal/cipher

     1  package cipher
     2  
     3  import (
     4  	"crypto/cipher"
     5  
     6  	"github.com/lestrrat-go/jwx/jwe/internal/keygen"
     7  )
     8  
     9  const (
    10  	TagSize = 16
    11  )
    12  
    13  // ContentCipher knows how to encrypt/decrypt the content given a content
    14  // encryption key and other data
    15  type ContentCipher interface {
    16  	KeySize() int
    17  	Encrypt(cek, aad, plaintext []byte) ([]byte, []byte, []byte, error)
    18  	Decrypt(cek, iv, aad, ciphertext, tag []byte) ([]byte, error)
    19  }
    20  
    21  type Fetcher interface {
    22  	Fetch([]byte) (cipher.AEAD, error)
    23  }
    24  
    25  type gcmFetcher struct{}
    26  type cbcFetcher struct{}
    27  
    28  // AesContentCipher represents a cipher based on AES
    29  type AesContentCipher struct {
    30  	NonceGenerator keygen.Generator
    31  	fetch          Fetcher
    32  	keysize        int
    33  	tagsize        int
    34  }
    35  

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