okay, aes done for real this time.
This commit is contained in:
parent
0203f8b0d8
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234de69be2
GPG Key ID:
8C004C2F93481F6B
10
TODO
10
TODO
@ -1,12 +1,20 @@
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- keytypes
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-- dsa, ecdsa, ecdsa-sk, ed25519, ed25519-sk, rsa ("-sk" variant is FIDO key)
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-- if rsa, signature types:
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--- ssh-rsa (sha1), rsa-sha2-256, rsa-sha2-512 (new default)
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- ciphers:
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-- 3des-cbc, aes128-cbc, aes192-cbc, aes256-cbc, aes128-ctr, aes192-ctr, aes256-ctr, aes128-gcm@openssh.com, aes256-gcm@openssh.com, chacha20-poly1305@openssh.com
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-- finish trimming copypasta for aes.
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we COULD have a unified AllocateEncrypt and AllocatedDecrypt for AesCipher, but that'd require a func argument for encryption/decryption - which means
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we COULD have a unified AllocateEncrypt and AllocatedDecrypt for AesCipher, but that'd require a func argument for encryption/decryption - which means breakage.
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-- test AES GCM?
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(and other unit tests)
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provide marshal, unmarshal for keytypes/* keys.
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https://golangexample.com/encode-and-decode-binary-message-and-file-formats-in-go/ (?)
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@ -734,7 +734,7 @@ pre.rouge {
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<h1>OpenSSH Key Structure Guide</h1>
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<div class="details">
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<span id="author" class="author">brent saner <bts@square-r00t.net>, https://r00t2.io</span><br>
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<span id="revdate">Last updated 2022-04-29 02:49:33 -0400</span>
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<span id="revdate">Last updated 2022-04-29 04:09:49 -0400</span>
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</div>
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<div id="toc" class="toc2">
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<div id="toctitle">Table of Contents</div>
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@ -1,10 +0,0 @@
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package aes128
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import (
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sshAES `r00t2.io/sshkeys/cipher/aes`
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)
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const (
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KeySize int = 16 // in bytes; AES128 is so named for its 128-bit key, thus: 128 / 8 = 16
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KdfKeySize int = KeySize + sshAES.IvSize
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)
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@ -1 +0,0 @@
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TODO
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@ -1 +0,0 @@
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TODO
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@ -1,32 +1,26 @@
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package cbc
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import (
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`bytes`
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gAes `crypto/aes`
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gCipher `crypto/cipher`
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`io`
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"bytes"
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gCipher "crypto/cipher"
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`r00t2.io/sshkeys/cipher`
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`r00t2.io/sshkeys/cipher/aes`
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`r00t2.io/sshkeys/cipher/aes/aes128`
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`r00t2.io/sshkeys/internal`
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"r00t2.io/sshkeys/internal"
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"r00t2.io/sshkeys/internal/ciphers/aesCommon"
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)
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// Setup populates a Cipher from a key. The key must include the IV suffixed to the actual key.
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func (c *Cipher) Setup(key []byte) (err error) {
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if key == nil || len(key) < aes128.KdfKeySize {
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err = cipher.ErrBadKeyLen
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if c == nil {
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*c = Cipher{
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&aesCommon.AesCipher{},
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}
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}
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if err = c.CipherSetup(key, aesCommon.Aes192Bits); err != nil {
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return
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}
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if c == nil {
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c = &Cipher{}
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}
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c.key = key[0:aes128.KeySize]
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c.iv = key[aes128.KeySize:(aes128.KdfKeySize)]
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return
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}
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@ -50,22 +44,6 @@ func (c *Cipher) NameBytes() (name []byte) {
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return
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}
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// BlockSize returns the blocksize of this Cipher.
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func (c *Cipher) BlockSize() (size int) {
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size = aes.BlockSize
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return
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}
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// KdfKeySize returns the target key length from KDF to use with this Cipher.
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func (c *Cipher) KdfKeySize() (size int) {
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size = aes128.KeySize
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return
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}
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/*
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Encrypt encrypts data (a string, []byte, byte, *bytes.Buffer, or *bytes.Reader) to the *bytes.Reader encrypted.
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@ -78,33 +56,18 @@ func (c *Cipher) KdfKeySize() (size int) {
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*/
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func (c *Cipher) Encrypt(data interface{}) (encrypted *bytes.Reader, err error) {
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var b []byte
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var padded []byte
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var cryptDst []byte
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var padded *bytes.Reader
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var cryptBlock gCipher.Block
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var crypter gCipher.BlockMode
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if b, err = internal.SerializeData(data); err != nil {
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if cryptDst, padded, cryptBlock, err = c.GetCryptBlock(data); err != nil {
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return
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}
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if padded, err = c.Pad(b); err != nil {
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return
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}
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crypter = gCipher.NewCBCEncrypter(cryptBlock, c.IV)
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b = make([]byte, padded.Len())
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if b, err = io.ReadAll(padded); err != nil {
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return
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}
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cryptDst = make([]byte, len(b))
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if cryptBlock, err = gAes.NewCipher(c.key); err != nil {
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return
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}
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crypter = gCipher.NewCBCEncrypter(cryptBlock, c.iv)
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crypter.CryptBlocks(cryptDst, b)
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crypter.CryptBlocks(cryptDst, padded)
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encrypted = bytes.NewReader(cryptDst)
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@ -146,40 +109,6 @@ func (c *Cipher) AllocateEncrypt(data interface{}) (encrypted *bytes.Reader, err
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return
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}
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/*
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Pad will pad data (a string, []byte, byte, or *bytes.Buffer) to the Cipher.BlockSize (if necessary).
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The resulting padded buffer is returned.
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NOTE: If data is a *bytes.Buffer, no bytes will be consumed -- the bytes are taken in entirety without consuming them (Buffer.Bytes()).
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It is up to the caller to consume the buffer as desired beforehand or isolate to a specific sub-buffer beforehand to pass to Cipher.Pad.
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NOTE: If data is a *bytes.Reader, ALL bytes WILL be consumed.
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*/
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func (c *Cipher) Pad(data interface{}) (paddedBuf *bytes.Reader, err error) {
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var b []byte
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var padNum int
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var pad []byte
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var buf *bytes.Buffer
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if b, err = internal.UnpackBytes(data); err != nil {
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return
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}
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buf = bytes.NewBuffer(b)
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for padIdx := 1; (buf.Len() % aes.BlockSize) != 0; padIdx++ {
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padNum = padIdx & cipher.PadMod
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pad = []byte{byte(uint32(padNum))}
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if _, err = buf.Write(pad); err != nil {
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return
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}
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}
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return
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}
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/*
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Decrypt takes a raw byte slice, a *bytes.Buffer, or a *bytes.Reader and returns a plain/decrypted *bytes.Reader.
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@ -192,25 +121,20 @@ func (c *Cipher) Pad(data interface{}) (paddedBuf *bytes.Reader, err error) {
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*/
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func (c *Cipher) Decrypt(data interface{}) (decrypted *bytes.Reader, err error) {
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var b []byte
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var decryptDst []byte
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var plain []byte
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var padded []byte
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var cryptBlock gCipher.Block
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var decrypter gCipher.BlockMode
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if b, err = internal.SerializeData(data); err != nil {
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if plain, padded, cryptBlock, err = c.GetDecryptBlock(data); err != nil {
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return
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}
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decryptDst = make([]byte, len(b))
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decrypter = gCipher.NewCBCDecrypter(cryptBlock, c.IV)
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if cryptBlock, err = gAes.NewCipher(c.key); err != nil {
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return
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}
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decrypter = gCipher.NewCBCDecrypter(cryptBlock, c.iv)
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decrypter.CryptBlocks(plain, padded)
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decrypter.CryptBlocks(decryptDst, b)
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decrypted = bytes.NewReader(decryptDst)
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decrypted = bytes.NewReader(plain)
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return
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}
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@ -239,15 +163,3 @@ func (c *Cipher) AllocatedDecrypt(data interface{}) (decrypted *bytes.Reader, er
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return
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}
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/*
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IsPlain indicates if this Cipher is a plain/null encryption (cipher.null.Null).
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It will always return false. It is included for interface compatability.
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*/
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func (c *Cipher) IsPlain() (plain bool) {
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plain = false
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return
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}
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10
cipher/aes/aes192/cbc/types.go
Normal file
10
cipher/aes/aes192/cbc/types.go
Normal file
@ -0,0 +1,10 @@
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package cbc
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import (
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"r00t2.io/sshkeys/internal/ciphers/aesCommon"
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)
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// Cipher is an AES128-CBC cipher.Cipher.
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type Cipher struct {
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*aesCommon.AesCipher
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}
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@ -1,10 +0,0 @@
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package aes192
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import (
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`r00t2.io/sshkeys/cipher/aes`
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)
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const (
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KeySize int = 24 // in bytes; AES182 is so named for its 192-bit key, thus: 192 / 8 = 24
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KdfKeySize int = KeySize + aes.IvSize
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)
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@ -1 +0,0 @@
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TODO
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@ -1,17 +1,25 @@
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package ctr
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import (
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`bytes`
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`io`
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"bytes"
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gCipher "crypto/cipher"
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`r00t2.io/sshkeys/cipher/aes`
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`r00t2.io/sshkeys/cipher/aes/aes128`
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`r00t2.io/sshkeys/internal`
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"r00t2.io/sshkeys/internal"
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"r00t2.io/sshkeys/internal/ciphers/aesCommon"
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)
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// Setup populates a Cipher from a key. The key must include the IV suffixed to the actual key.
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func (c *Cipher) Setup(key []byte) (err error) {
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// TODO
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if c == nil {
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*c = Cipher{
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&aesCommon.AesCipher{},
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}
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}
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if err = c.CipherSetup(key, aesCommon.Aes192Bits); err != nil {
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return
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}
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return
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}
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@ -36,22 +44,6 @@ func (c *Cipher) NameBytes() (name []byte) {
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return
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}
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// BlockSize returns the blocksize of this Cipher.
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func (c *Cipher) BlockSize() (size int) {
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size = aes.BlockSize
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return
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}
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// KdfKeySize returns the target key length from KDF to use with this Cipher.
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func (c *Cipher) KdfKeySize() (size int) {
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size = aes128.KeySize
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return
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}
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/*
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Encrypt encrypts data (a string, []byte, byte, *bytes.Buffer, or *bytes.Reader) to the *bytes.Reader encrypted.
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@ -64,27 +56,20 @@ func (c *Cipher) KdfKeySize() (size int) {
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*/
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func (c *Cipher) Encrypt(data interface{}) (encrypted *bytes.Reader, err error) {
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var b []byte
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var padded []byte
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var cryptDst []byte
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var padded *bytes.Reader
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var cryptBlock gCipher.Block
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var crypter gCipher.Stream
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if b, err = internal.SerializeData(data); err != nil {
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if cryptDst, padded, cryptBlock, err = c.GetCryptBlock(data); err != nil {
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return
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}
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if padded, err = c.Pad(b); err != nil {
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return
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}
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crypter = gCipher.NewCTR(cryptBlock, c.IV)
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b = make([]byte, padded.Len())
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if b, err = io.ReadAll(padded); err != nil {
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return
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}
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crypter.XORKeyStream(cryptDst, padded)
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cryptDst = make([]byte, len(b))
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// TODO
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_ = cryptDst
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encrypted = bytes.NewReader(cryptDst)
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return
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}
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@ -124,22 +109,6 @@ func (c *Cipher) AllocateEncrypt(data interface{}) (encrypted *bytes.Reader, err
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return
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}
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/*
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Pad will pad data (a string, []byte, byte, or *bytes.Buffer) to the Cipher.BlockSize (if necessary).
|
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The resulting padded buffer is returned.
|
||||
|
||||
NOTE: If data is a *bytes.Buffer, no bytes will be consumed -- the bytes are taken in entirety without consuming them (Buffer.Bytes()).
|
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It is up to the caller to consume the buffer as desired beforehand or isolate to a specific sub-buffer beforehand to pass to Cipher.Pad.
|
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|
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NOTE: If data is a *bytes.Reader, ALL bytes WILL be consumed.
|
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*/
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func (c *Cipher) Pad(data interface{}) (paddedBuf *bytes.Reader, err error) {
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// TODO
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return
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}
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/*
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Decrypt takes a raw byte slice, a *bytes.Buffer, or a *bytes.Reader and returns a plain/decrypted *bytes.Reader.
|
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|
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@ -152,17 +121,20 @@ func (c *Cipher) Pad(data interface{}) (paddedBuf *bytes.Reader, err error) {
|
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*/
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func (c *Cipher) Decrypt(data interface{}) (decrypted *bytes.Reader, err error) {
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var b []byte
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var decryptDst []byte
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var plain []byte
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var padded []byte
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var cryptBlock gCipher.Block
|
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var decrypter gCipher.Stream
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if b, err = internal.SerializeData(data); err != nil {
|
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if plain, padded, cryptBlock, err = c.GetDecryptBlock(data); err != nil {
|
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return
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}
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|
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decryptDst = make([]byte, len(b))
|
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decrypter = gCipher.NewCTR(cryptBlock, c.IV)
|
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|
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// TODO
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_ = decryptDst
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decrypter.XORKeyStream(plain, padded)
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|
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decrypted = bytes.NewReader(plain)
|
||||
|
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return
|
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}
|
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@ -191,15 +163,3 @@ func (c *Cipher) AllocatedDecrypt(data interface{}) (decrypted *bytes.Reader, er
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
/*
|
||||
IsPlain indicates if this Cipher is a plain/null encryption (cipher.null.Null).
|
||||
|
||||
It will always return false. It is included for interface compatability.
|
||||
*/
|
||||
func (c *Cipher) IsPlain() (plain bool) {
|
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|
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plain = false
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
10
cipher/aes/aes192/ctr/types.go
Normal file
10
cipher/aes/aes192/ctr/types.go
Normal file
@ -0,0 +1,10 @@
|
||||
package ctr
|
||||
|
||||
import (
|
||||
"r00t2.io/sshkeys/internal/ciphers/aesCommon"
|
||||
)
|
||||
|
||||
// Cipher is an AES128-CTR cipher.Cipher.
|
||||
type Cipher struct {
|
||||
*aesCommon.AesCipher
|
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}
|
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@ -1 +0,0 @@
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TODO
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@ -1,5 +0,0 @@
|
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package gcm
|
||||
|
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const (
|
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Name string = "aes192-gcm@openssh.com"
|
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)
|
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@ -1,205 +0,0 @@
|
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package gcm
|
||||
|
||||
import (
|
||||
`bytes`
|
||||
`io`
|
||||
|
||||
`r00t2.io/sshkeys/cipher/aes`
|
||||
`r00t2.io/sshkeys/cipher/aes/aes128`
|
||||
`r00t2.io/sshkeys/internal`
|
||||
)
|
||||
|
||||
func (c *Cipher) Setup(key []byte) (err error) {
|
||||
|
||||
// TODO
|
||||
|
||||
return
|
||||
}
|
||||
|
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// Name returns the name as used in the key file bytes.
|
||||
func (c *Cipher) Name() (name string) {
|
||||
|
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name = Name
|
||||
|
||||
return
|
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}
|
||||
|
||||
// NameBytes returns the byte form of Cipher.Name with leading bytecount allocator.
|
||||
func (c *Cipher) NameBytes() (name []byte) {
|
||||
|
||||
var err error
|
||||
|
||||
if name, err = internal.PackBytes(Name); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
// BlockSize returns the blocksize of this Cipher.
|
||||
func (c *Cipher) BlockSize() (size int) {
|
||||
|
||||
size = aes.BlockSize
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
// KdfKeySize returns the target key length from KDF to use with this Cipher.
|
||||
func (c *Cipher) KdfKeySize() (size int) {
|
||||
|
||||
size = aes128.KeySize
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
/*
|
||||
Encrypt encrypts data (a string, []byte, byte, *bytes.Buffer, or *bytes.Reader) to the *bytes.Reader encrypted.
|
||||
|
||||
NOTE: Padding IS applied automatically.
|
||||
|
||||
NOTE: If data is a *bytes.Buffer, no bytes will be consumed -- the bytes are taken in entirety without consuming them (Buffer.Bytes()).
|
||||
It is up to the caller to consume the buffer as desired beforehand or isolate to a specific sub-buffer beforehand to pass to Cipher.Encrypt.
|
||||
|
||||
NOTE: If data is a *bytes.Reader, ALL bytes WILL be consumed.
|
||||
*/
|
||||
func (c *Cipher) Encrypt(data interface{}) (encrypted *bytes.Reader, err error) {
|
||||
|
||||
var b []byte
|
||||
var cryptDst []byte
|
||||
var padded *bytes.Reader
|
||||
|
||||
if b, err = internal.SerializeData(data); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
if padded, err = c.Pad(b); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
b = make([]byte, padded.Len())
|
||||
if b, err = io.ReadAll(padded); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
cryptDst = make([]byte, len(b))
|
||||
|
||||
// TODO
|
||||
_ = cryptDst
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
/*
|
||||
AllocateEncrypt is the same as Cipher.Encrypt but includes an unencrypted byte allocator prefix.
|
||||
|
||||
NOTE: Padding IS applied automatically.
|
||||
|
||||
NOTE: If data is a *bytes.Buffer, no bytes will be consumed -- the bytes are taken in entirety without consuming them (Buffer.Bytes()).
|
||||
It is up to the caller to consume the buffer as desired beforehand or isolate to a specific sub-buffer beforehand to pass to Cipher.AllocateEncrypt.
|
||||
|
||||
NOTE: If data is a *bytes.Reader, ALL bytes WILL be consumed.
|
||||
*/
|
||||
func (c *Cipher) AllocateEncrypt(data interface{}) (encrypted *bytes.Reader, err error) {
|
||||
|
||||
var b *bytes.Reader
|
||||
var buf *bytes.Buffer = new(bytes.Buffer)
|
||||
var alloc []byte = make([]byte, 4)
|
||||
|
||||
if b, err = c.Encrypt(data); err != nil {
|
||||
return
|
||||
}
|
||||
if alloc, err = internal.PackBytes(b); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
if _, err = buf.Write(alloc); err != nil {
|
||||
return
|
||||
}
|
||||
if _, err = b.WriteTo(buf); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
encrypted = bytes.NewReader(buf.Bytes())
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
/*
|
||||
Pad will pad data (a string, []byte, byte, or *bytes.Buffer) to the Cipher.BlockSize (if necessary).
|
||||
The resulting padded buffer is returned.
|
||||
|
||||
NOTE: If data is a *bytes.Buffer, no bytes will be consumed -- the bytes are taken in entirety without consuming them (Buffer.Bytes()).
|
||||
It is up to the caller to consume the buffer as desired beforehand or isolate to a specific sub-buffer beforehand to pass to Cipher.Pad.
|
||||
|
||||
NOTE: If data is a *bytes.Reader, ALL bytes WILL be consumed.
|
||||
*/
|
||||
func (c *Cipher) Pad(data interface{}) (paddedBuf *bytes.Reader, err error) {
|
||||
|
||||
// TODO
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
/*
|
||||
Decrypt takes a raw byte slice, a *bytes.Buffer, or a *bytes.Reader and returns a plain/decrypted *bytes.Reader.
|
||||
|
||||
NOTE: The decrypted data contains padding. It is up to the caller to remove/strip.
|
||||
|
||||
NOTE: If data is a *bytes.Buffer, no bytes will be consumed -- the bytes are taken in entirety without consuming them (Buffer.Bytes()).
|
||||
It is up to the caller to consume the buffer as desired beforehand or isolate to a specific sub-buffer beforehand to pass to Cipher.Decrypt.
|
||||
|
||||
NOTE: If data is a *bytes.Reader, ALL bytes WILL be consumed.
|
||||
*/
|
||||
func (c *Cipher) Decrypt(data interface{}) (decrypted *bytes.Reader, err error) {
|
||||
|
||||
var b []byte
|
||||
var decryptDst []byte
|
||||
|
||||
if b, err = internal.SerializeData(data); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
decryptDst = make([]byte, len(b))
|
||||
|
||||
// TODO
|
||||
_ = decryptDst
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
/*
|
||||
AllocatedDecrypt is the same as Cipher.Decrypt but assumes that data includes an unencrypted uint32 byte allocator prefix.
|
||||
|
||||
Be *extremely* certain of this, as things can get REALLY weird if you pass in data that doesn't actually have that prefix.
|
||||
|
||||
NOTE: The decrypted data contains padding. It is up to the caller to remove/strip.
|
||||
|
||||
NOTE: If data is a bytes.Buffer pointer, it will consume ONLY the leading prefix and the length of bytes the prefix indicates and no more.
|
||||
|
||||
NOTE: If data is a *bytes.Reader, it will consume ONLY the leading prefix and the length of bytes the prefix indicates and no more.
|
||||
*/
|
||||
func (c *Cipher) AllocatedDecrypt(data interface{}) (decrypted *bytes.Reader, err error) {
|
||||
|
||||
var b []byte
|
||||
|
||||
if b, err = internal.UnpackBytes(data); err != nil {
|
||||
return
|
||||
}
|
||||
if decrypted, err = c.Decrypt(b); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
/*
|
||||
IsPlain indicates if this Cipher is a plain/null encryption (cipher.null.Null).
|
||||
|
||||
It will always return false. It is included for interface compatability.
|
||||
*/
|
||||
func (c *Cipher) IsPlain() (plain bool) {
|
||||
|
||||
plain = false
|
||||
|
||||
return
|
||||
}
|
||||
@ -1 +0,0 @@
|
||||
TODO
|
||||
@ -1,32 +1,26 @@
|
||||
package cbc
|
||||
|
||||
import (
|
||||
`bytes`
|
||||
gAes `crypto/aes`
|
||||
gCipher `crypto/cipher`
|
||||
`io`
|
||||
"bytes"
|
||||
gCipher "crypto/cipher"
|
||||
|
||||
`r00t2.io/sshkeys/cipher`
|
||||
`r00t2.io/sshkeys/cipher/aes`
|
||||
`r00t2.io/sshkeys/cipher/aes/aes128`
|
||||
`r00t2.io/sshkeys/internal`
|
||||
"r00t2.io/sshkeys/internal"
|
||||
"r00t2.io/sshkeys/internal/ciphers/aesCommon"
|
||||
)
|
||||
|
||||
// Setup populates a Cipher from a key. The key must include the IV suffixed to the actual key.
|
||||
func (c *Cipher) Setup(key []byte) (err error) {
|
||||
|
||||
if key == nil || len(key) < aes128.KdfKeySize {
|
||||
err = cipher.ErrBadKeyLen
|
||||
if c == nil {
|
||||
*c = Cipher{
|
||||
&aesCommon.AesCipher{},
|
||||
}
|
||||
}
|
||||
|
||||
if err = c.CipherSetup(key, aesCommon.Aes256Bits); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
if c == nil {
|
||||
c = &Cipher{}
|
||||
}
|
||||
|
||||
c.key = key[0:aes128.KeySize]
|
||||
c.iv = key[aes128.KeySize:(aes128.KdfKeySize)]
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
@ -50,22 +44,6 @@ func (c *Cipher) NameBytes() (name []byte) {
|
||||
return
|
||||
}
|
||||
|
||||
// BlockSize returns the blocksize of this Cipher.
|
||||
func (c *Cipher) BlockSize() (size int) {
|
||||
|
||||
size = aes.BlockSize
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
// KdfKeySize returns the target key length from KDF to use with this Cipher.
|
||||
func (c *Cipher) KdfKeySize() (size int) {
|
||||
|
||||
size = aes128.KeySize
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
/*
|
||||
Encrypt encrypts data (a string, []byte, byte, *bytes.Buffer, or *bytes.Reader) to the *bytes.Reader encrypted.
|
||||
|
||||
@ -78,33 +56,18 @@ func (c *Cipher) KdfKeySize() (size int) {
|
||||
*/
|
||||
func (c *Cipher) Encrypt(data interface{}) (encrypted *bytes.Reader, err error) {
|
||||
|
||||
var b []byte
|
||||
var padded []byte
|
||||
var cryptDst []byte
|
||||
var padded *bytes.Reader
|
||||
var cryptBlock gCipher.Block
|
||||
var crypter gCipher.BlockMode
|
||||
|
||||
if b, err = internal.SerializeData(data); err != nil {
|
||||
if cryptDst, padded, cryptBlock, err = c.GetCryptBlock(data); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
if padded, err = c.Pad(b); err != nil {
|
||||
return
|
||||
}
|
||||
crypter = gCipher.NewCBCEncrypter(cryptBlock, c.IV)
|
||||
|
||||
b = make([]byte, padded.Len())
|
||||
if b, err = io.ReadAll(padded); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
cryptDst = make([]byte, len(b))
|
||||
|
||||
if cryptBlock, err = gAes.NewCipher(c.key); err != nil {
|
||||
return
|
||||
}
|
||||
crypter = gCipher.NewCBCEncrypter(cryptBlock, c.iv)
|
||||
|
||||
crypter.CryptBlocks(cryptDst, b)
|
||||
crypter.CryptBlocks(cryptDst, padded)
|
||||
|
||||
encrypted = bytes.NewReader(cryptDst)
|
||||
|
||||
@ -146,40 +109,6 @@ func (c *Cipher) AllocateEncrypt(data interface{}) (encrypted *bytes.Reader, err
|
||||
return
|
||||
}
|
||||
|
||||
/*
|
||||
Pad will pad data (a string, []byte, byte, or *bytes.Buffer) to the Cipher.BlockSize (if necessary).
|
||||
The resulting padded buffer is returned.
|
||||
|
||||
NOTE: If data is a *bytes.Buffer, no bytes will be consumed -- the bytes are taken in entirety without consuming them (Buffer.Bytes()).
|
||||
It is up to the caller to consume the buffer as desired beforehand or isolate to a specific sub-buffer beforehand to pass to Cipher.Pad.
|
||||
|
||||
NOTE: If data is a *bytes.Reader, ALL bytes WILL be consumed.
|
||||
*/
|
||||
func (c *Cipher) Pad(data interface{}) (paddedBuf *bytes.Reader, err error) {
|
||||
|
||||
var b []byte
|
||||
var padNum int
|
||||
var pad []byte
|
||||
var buf *bytes.Buffer
|
||||
|
||||
if b, err = internal.UnpackBytes(data); err != nil {
|
||||
return
|
||||
}
|
||||
buf = bytes.NewBuffer(b)
|
||||
|
||||
for padIdx := 1; (buf.Len() % aes.BlockSize) != 0; padIdx++ {
|
||||
|
||||
padNum = padIdx & cipher.PadMod
|
||||
pad = []byte{byte(uint32(padNum))}
|
||||
|
||||
if _, err = buf.Write(pad); err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
/*
|
||||
Decrypt takes a raw byte slice, a *bytes.Buffer, or a *bytes.Reader and returns a plain/decrypted *bytes.Reader.
|
||||
|
||||
@ -192,25 +121,20 @@ func (c *Cipher) Pad(data interface{}) (paddedBuf *bytes.Reader, err error) {
|
||||
*/
|
||||
func (c *Cipher) Decrypt(data interface{}) (decrypted *bytes.Reader, err error) {
|
||||
|
||||
var b []byte
|
||||
var decryptDst []byte
|
||||
var plain []byte
|
||||
var padded []byte
|
||||
var cryptBlock gCipher.Block
|
||||
var decrypter gCipher.BlockMode
|
||||
|
||||
if b, err = internal.SerializeData(data); err != nil {
|
||||
if plain, padded, cryptBlock, err = c.GetDecryptBlock(data); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
decryptDst = make([]byte, len(b))
|
||||
decrypter = gCipher.NewCBCDecrypter(cryptBlock, c.IV)
|
||||
|
||||
if cryptBlock, err = gAes.NewCipher(c.key); err != nil {
|
||||
return
|
||||
}
|
||||
decrypter = gCipher.NewCBCDecrypter(cryptBlock, c.iv)
|
||||
decrypter.CryptBlocks(plain, padded)
|
||||
|
||||
decrypter.CryptBlocks(decryptDst, b)
|
||||
|
||||
decrypted = bytes.NewReader(decryptDst)
|
||||
decrypted = bytes.NewReader(plain)
|
||||
|
||||
return
|
||||
}
|
||||
@ -239,15 +163,3 @@ func (c *Cipher) AllocatedDecrypt(data interface{}) (decrypted *bytes.Reader, er
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
/*
|
||||
IsPlain indicates if this Cipher is a plain/null encryption (cipher.null.Null).
|
||||
|
||||
It will always return false. It is included for interface compatability.
|
||||
*/
|
||||
func (c *Cipher) IsPlain() (plain bool) {
|
||||
|
||||
plain = false
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
10
cipher/aes/aes256/cbc/types.go
Normal file
10
cipher/aes/aes256/cbc/types.go
Normal file
@ -0,0 +1,10 @@
|
||||
package cbc
|
||||
|
||||
import (
|
||||
"r00t2.io/sshkeys/internal/ciphers/aesCommon"
|
||||
)
|
||||
|
||||
// Cipher is an AES128-CBC cipher.Cipher.
|
||||
type Cipher struct {
|
||||
*aesCommon.AesCipher
|
||||
}
|
||||
@ -1,10 +0,0 @@
|
||||
package aes256
|
||||
|
||||
import (
|
||||
`r00t2.io/sshkeys/cipher/aes`
|
||||
)
|
||||
|
||||
const (
|
||||
KeySize int = 32 // in bytes; AES256 is so named for its 256-bit key, thus: 256 / 8 = 32
|
||||
KdfKeySize int = KeySize + aes.IvSize
|
||||
)
|
||||
@ -1 +0,0 @@
|
||||
TODO
|
||||
@ -1,17 +1,25 @@
|
||||
package ctr
|
||||
|
||||
import (
|
||||
`bytes`
|
||||
`io`
|
||||
"bytes"
|
||||
gCipher "crypto/cipher"
|
||||
|
||||
`r00t2.io/sshkeys/cipher/aes`
|
||||
`r00t2.io/sshkeys/cipher/aes/aes128`
|
||||
`r00t2.io/sshkeys/internal`
|
||||
"r00t2.io/sshkeys/internal"
|
||||
"r00t2.io/sshkeys/internal/ciphers/aesCommon"
|
||||
)
|
||||
|
||||
// Setup populates a Cipher from a key. The key must include the IV suffixed to the actual key.
|
||||
func (c *Cipher) Setup(key []byte) (err error) {
|
||||
|
||||
// TODO
|
||||
if c == nil {
|
||||
*c = Cipher{
|
||||
&aesCommon.AesCipher{},
|
||||
}
|
||||
}
|
||||
|
||||
if err = c.CipherSetup(key, aesCommon.Aes256Bits); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
@ -36,22 +44,6 @@ func (c *Cipher) NameBytes() (name []byte) {
|
||||
return
|
||||
}
|
||||
|
||||
// BlockSize returns the blocksize of this Cipher.
|
||||
func (c *Cipher) BlockSize() (size int) {
|
||||
|
||||
size = aes.BlockSize
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
// KdfKeySize returns the target key length from KDF to use with this Cipher.
|
||||
func (c *Cipher) KdfKeySize() (size int) {
|
||||
|
||||
size = aes128.KeySize
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
/*
|
||||
Encrypt encrypts data (a string, []byte, byte, *bytes.Buffer, or *bytes.Reader) to the *bytes.Reader encrypted.
|
||||
|
||||
@ -64,27 +56,20 @@ func (c *Cipher) KdfKeySize() (size int) {
|
||||
*/
|
||||
func (c *Cipher) Encrypt(data interface{}) (encrypted *bytes.Reader, err error) {
|
||||
|
||||
var b []byte
|
||||
var padded []byte
|
||||
var cryptDst []byte
|
||||
var padded *bytes.Reader
|
||||
var cryptBlock gCipher.Block
|
||||
var crypter gCipher.Stream
|
||||
|
||||
if b, err = internal.SerializeData(data); err != nil {
|
||||
if cryptDst, padded, cryptBlock, err = c.GetCryptBlock(data); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
if padded, err = c.Pad(b); err != nil {
|
||||
return
|
||||
}
|
||||
crypter = gCipher.NewCTR(cryptBlock, c.IV)
|
||||
|
||||
b = make([]byte, padded.Len())
|
||||
if b, err = io.ReadAll(padded); err != nil {
|
||||
return
|
||||
}
|
||||
crypter.XORKeyStream(cryptDst, padded)
|
||||
|
||||
cryptDst = make([]byte, len(b))
|
||||
|
||||
// TODO
|
||||
_ = cryptDst
|
||||
encrypted = bytes.NewReader(cryptDst)
|
||||
|
||||
return
|
||||
}
|
||||
@ -124,22 +109,6 @@ func (c *Cipher) AllocateEncrypt(data interface{}) (encrypted *bytes.Reader, err
|
||||
return
|
||||
}
|
||||
|
||||
/*
|
||||
Pad will pad data (a string, []byte, byte, or *bytes.Buffer) to the Cipher.BlockSize (if necessary).
|
||||
The resulting padded buffer is returned.
|
||||
|
||||
NOTE: If data is a *bytes.Buffer, no bytes will be consumed -- the bytes are taken in entirety without consuming them (Buffer.Bytes()).
|
||||
It is up to the caller to consume the buffer as desired beforehand or isolate to a specific sub-buffer beforehand to pass to Cipher.Pad.
|
||||
|
||||
NOTE: If data is a *bytes.Reader, ALL bytes WILL be consumed.
|
||||
*/
|
||||
func (c *Cipher) Pad(data interface{}) (paddedBuf *bytes.Reader, err error) {
|
||||
|
||||
// TODO
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
/*
|
||||
Decrypt takes a raw byte slice, a *bytes.Buffer, or a *bytes.Reader and returns a plain/decrypted *bytes.Reader.
|
||||
|
||||
@ -152,17 +121,20 @@ func (c *Cipher) Pad(data interface{}) (paddedBuf *bytes.Reader, err error) {
|
||||
*/
|
||||
func (c *Cipher) Decrypt(data interface{}) (decrypted *bytes.Reader, err error) {
|
||||
|
||||
var b []byte
|
||||
var decryptDst []byte
|
||||
var plain []byte
|
||||
var padded []byte
|
||||
var cryptBlock gCipher.Block
|
||||
var decrypter gCipher.Stream
|
||||
|
||||
if b, err = internal.SerializeData(data); err != nil {
|
||||
if plain, padded, cryptBlock, err = c.GetDecryptBlock(data); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
decryptDst = make([]byte, len(b))
|
||||
decrypter = gCipher.NewCTR(cryptBlock, c.IV)
|
||||
|
||||
// TODO
|
||||
_ = decryptDst
|
||||
decrypter.XORKeyStream(plain, padded)
|
||||
|
||||
decrypted = bytes.NewReader(plain)
|
||||
|
||||
return
|
||||
}
|
||||
@ -191,15 +163,3 @@ func (c *Cipher) AllocatedDecrypt(data interface{}) (decrypted *bytes.Reader, er
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
/*
|
||||
IsPlain indicates if this Cipher is a plain/null encryption (cipher.null.Null).
|
||||
|
||||
It will always return false. It is included for interface compatability.
|
||||
*/
|
||||
func (c *Cipher) IsPlain() (plain bool) {
|
||||
|
||||
plain = false
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
10
cipher/aes/aes256/ctr/types.go
Normal file
10
cipher/aes/aes256/ctr/types.go
Normal file
@ -0,0 +1,10 @@
|
||||
package ctr
|
||||
|
||||
import (
|
||||
"r00t2.io/sshkeys/internal/ciphers/aesCommon"
|
||||
)
|
||||
|
||||
// Cipher is an AES128-CTR cipher.Cipher.
|
||||
type Cipher struct {
|
||||
*aesCommon.AesCipher
|
||||
}
|
||||
@ -1 +0,0 @@
|
||||
TODO
|
||||
@ -1,17 +1,25 @@
|
||||
package gcm
|
||||
|
||||
import (
|
||||
`bytes`
|
||||
`io`
|
||||
"bytes"
|
||||
gCipher "crypto/cipher"
|
||||
|
||||
`r00t2.io/sshkeys/cipher/aes`
|
||||
`r00t2.io/sshkeys/cipher/aes/aes128`
|
||||
`r00t2.io/sshkeys/internal`
|
||||
"r00t2.io/sshkeys/internal"
|
||||
"r00t2.io/sshkeys/internal/ciphers/aesCommon"
|
||||
)
|
||||
|
||||
// Setup populates a Cipher from a key. The key must include the IV suffixed to the actual key.
|
||||
func (c *Cipher) Setup(key []byte) (err error) {
|
||||
|
||||
// TODO
|
||||
if c == nil {
|
||||
*c = Cipher{
|
||||
&aesCommon.AesCipher{},
|
||||
}
|
||||
}
|
||||
|
||||
if err = c.CipherSetup(key, aesCommon.Aes256Bits); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
@ -36,22 +44,6 @@ func (c *Cipher) NameBytes() (name []byte) {
|
||||
return
|
||||
}
|
||||
|
||||
// BlockSize returns the blocksize of this Cipher.
|
||||
func (c *Cipher) BlockSize() (size int) {
|
||||
|
||||
size = aes.BlockSize
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
// KdfKeySize returns the target key length from KDF to use with this Cipher.
|
||||
func (c *Cipher) KdfKeySize() (size int) {
|
||||
|
||||
size = aes128.KeySize
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
/*
|
||||
Encrypt encrypts data (a string, []byte, byte, *bytes.Buffer, or *bytes.Reader) to the *bytes.Reader encrypted.
|
||||
|
||||
@ -64,27 +56,22 @@ func (c *Cipher) KdfKeySize() (size int) {
|
||||
*/
|
||||
func (c *Cipher) Encrypt(data interface{}) (encrypted *bytes.Reader, err error) {
|
||||
|
||||
var b []byte
|
||||
var padded []byte
|
||||
var cryptDst []byte
|
||||
var padded *bytes.Reader
|
||||
var cryptBlock gCipher.Block
|
||||
var crypter gCipher.AEAD
|
||||
|
||||
if b, err = internal.SerializeData(data); err != nil {
|
||||
if cryptDst, padded, cryptBlock, err = c.GetCryptBlock(data); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
if padded, err = c.Pad(b); err != nil {
|
||||
if crypter, err = gCipher.NewGCM(cryptBlock); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
b = make([]byte, padded.Len())
|
||||
if b, err = io.ReadAll(padded); err != nil {
|
||||
return
|
||||
}
|
||||
cryptDst = crypter.Seal(cryptDst, c.IV, padded, nil)
|
||||
|
||||
cryptDst = make([]byte, len(b))
|
||||
|
||||
// TODO
|
||||
_ = cryptDst
|
||||
encrypted = bytes.NewReader(cryptDst)
|
||||
|
||||
return
|
||||
}
|
||||
@ -124,22 +111,6 @@ func (c *Cipher) AllocateEncrypt(data interface{}) (encrypted *bytes.Reader, err
|
||||
return
|
||||
}
|
||||
|
||||
/*
|
||||
Pad will pad data (a string, []byte, byte, or *bytes.Buffer) to the Cipher.BlockSize (if necessary).
|
||||
The resulting padded buffer is returned.
|
||||
|
||||
NOTE: If data is a *bytes.Buffer, no bytes will be consumed -- the bytes are taken in entirety without consuming them (Buffer.Bytes()).
|
||||
It is up to the caller to consume the buffer as desired beforehand or isolate to a specific sub-buffer beforehand to pass to Cipher.Pad.
|
||||
|
||||
NOTE: If data is a *bytes.Reader, ALL bytes WILL be consumed.
|
||||
*/
|
||||
func (c *Cipher) Pad(data interface{}) (paddedBuf *bytes.Reader, err error) {
|
||||
|
||||
// TODO
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
/*
|
||||
Decrypt takes a raw byte slice, a *bytes.Buffer, or a *bytes.Reader and returns a plain/decrypted *bytes.Reader.
|
||||
|
||||
@ -152,17 +123,24 @@ func (c *Cipher) Pad(data interface{}) (paddedBuf *bytes.Reader, err error) {
|
||||
*/
|
||||
func (c *Cipher) Decrypt(data interface{}) (decrypted *bytes.Reader, err error) {
|
||||
|
||||
var b []byte
|
||||
var decryptDst []byte
|
||||
var plain []byte
|
||||
var padded []byte
|
||||
var cryptBlock gCipher.Block
|
||||
var decrypter gCipher.AEAD
|
||||
|
||||
if b, err = internal.SerializeData(data); err != nil {
|
||||
if plain, padded, cryptBlock, err = c.GetDecryptBlock(data); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
decryptDst = make([]byte, len(b))
|
||||
if decrypter, err = gCipher.NewGCM(cryptBlock); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
// TODO
|
||||
_ = decryptDst
|
||||
if plain, err = decrypter.Open(plain, c.IV, padded, nil); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
decrypted = bytes.NewReader(plain)
|
||||
|
||||
return
|
||||
}
|
||||
@ -191,15 +169,3 @@ func (c *Cipher) AllocatedDecrypt(data interface{}) (decrypted *bytes.Reader, er
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
/*
|
||||
IsPlain indicates if this Cipher is a plain/null encryption (cipher.null.Null).
|
||||
|
||||
It will always return false. It is included for interface compatability.
|
||||
*/
|
||||
func (c *Cipher) IsPlain() (plain bool) {
|
||||
|
||||
plain = false
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
10
cipher/aes/aes256/gcm/types.go
Normal file
10
cipher/aes/aes256/gcm/types.go
Normal file
@ -0,0 +1,10 @@
|
||||
package gcm
|
||||
|
||||
import (
|
||||
"r00t2.io/sshkeys/internal/ciphers/aesCommon"
|
||||
)
|
||||
|
||||
// Cipher is an AES128-GCM cipher.Cipher.
|
||||
type Cipher struct {
|
||||
*aesCommon.AesCipher
|
||||
}
|
||||
@ -1,10 +0,0 @@
|
||||
package aes
|
||||
|
||||
import (
|
||||
`crypto/aes`
|
||||
)
|
||||
|
||||
const (
|
||||
BlockSize int = aes.BlockSize
|
||||
IvSize int = aes.BlockSize
|
||||
)
|
||||
@ -2,6 +2,6 @@ package aesCommon
|
||||
|
||||
const (
|
||||
Aes128Bits aesBitSize = 128
|
||||
Aes196Bits aesBitSize = 196
|
||||
Aes192Bits aesBitSize = 192
|
||||
Aes256Bits aesBitSize = 256
|
||||
)
|
||||
|
||||
@ -16,7 +16,7 @@ type AesCipher struct {
|
||||
/*
|
||||
KeyLen is the length of key used (in bytes) (int(AesCipher.Bits) / 8).
|
||||
|
||||
Must be one of 16 (128-bit), 24 (195-bit), or 32 (256-bit).
|
||||
Must be one of 16 (128-bit), 24 (192-bit), or 32 (256-bit).
|
||||
*/
|
||||
KeyLen int `validate:"oneof=16 24 32"`
|
||||
// Bits is the full bit length of AesCipher.KeyLen (in bits) (AesCipher.KeyLen * 8)
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user