47 lines
923 B
Go
47 lines
923 B
Go
package aes
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import (
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"bytes"
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"crypto/aes"
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"crypto/cipher"
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"crypto/md5"
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"unsafe"
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)
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var Key []byte
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func AesCtrEncrypt(dst, plainText []byte) []byte {
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//1. 创建cipher.Block接口
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block, _ := aes.NewCipher(Key)
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//2. 创建分组模式，在crypto/cipher包中
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iv := bytes.Repeat([]byte("1"), block.BlockSize())
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stream := cipher.NewCTR(block, iv)
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//3. 加密
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stream.XORKeyStream(dst, plainText)
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return dst
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}
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func AesCtrDecrypt(encryptData []byte) []byte {
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data := make([]byte, len(encryptData))
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return AesCtrEncrypt(data, encryptData)
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}
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const hextable = "0123456789abcdef"
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func MD5_B(str string) []byte {
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dst := make([]byte, 32)
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for k, v := range md5.Sum(Str2bytes(str)) {
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dst[k*2] = hextable[v>>4]
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dst[k*2+1] = hextable[v&0x0f]
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}
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return dst
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}
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func Str2bytes(s string) []byte {
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x := (*[2]uintptr)(unsafe.Pointer(&s))
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h := [3]uintptr{x[0], x[1], x[1]}
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return *(*[]byte)(unsafe.Pointer(&h))
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}
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