use go 1.12

Signed-off-by: hongming <talonwan@yunify.com>

vendor/github.com/lucas-clemente/aes12/cipher.go

@@ -0,0 +1,68 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package aes12
+
+import "strconv"
+
+// The AES block size in bytes.
+const BlockSize = 16
+
+// A cipher is an instance of AES encryption using a particular key.
+type aesCipher struct {
+	enc []uint32
+	dec []uint32
+}
+
+type KeySizeError int
+
+func (k KeySizeError) Error() string {
+	return "crypto/aes: invalid key size " + strconv.Itoa(int(k))
+}
+
+// NewCipher creates and returns a new Block.
+// The key argument should be the AES key,
+// either 16, 24, or 32 bytes to select
+// AES-128, AES-192, or AES-256.
+func NewCipher(key []byte) (Block, error) {
+	k := len(key)
+	switch k {
+	default:
+		return nil, KeySizeError(k)
+	case 16, 24, 32:
+		break
+	}
+	return newCipher(key)
+}
+
+// newCipherGeneric creates and returns a new Block
+// implemented in pure Go.
+func newCipherGeneric(key []byte) (Block, error) {
+	n := len(key) + 28
+	c := aesCipher{make([]uint32, n), make([]uint32, n)}
+	expandKeyGo(key, c.enc, c.dec)
+	return &c, nil
+}
+
+func (c *aesCipher) BlockSize() int { return BlockSize }
+
+func (c *aesCipher) Encrypt(dst, src []byte) {
+	if len(src) < BlockSize {
+		panic("crypto/aes: input not full block")
+	}
+	if len(dst) < BlockSize {
+		panic("crypto/aes: output not full block")
+	}
+	encryptBlockGo(c.enc, dst, src)
+}
+
+func (c *aesCipher) Decrypt(dst, src []byte) {
+	if len(src) < BlockSize {
+		panic("crypto/aes: input not full block")
+	}
+	if len(dst) < BlockSize {
+		panic("crypto/aes: output not full block")
+	}
+	decryptBlockGo(c.dec, dst, src)
+}