增加加解密

唐旭辉
fastEncryptDecode/fastEndecode2.go
go.sum
--- a/fastEncryptDecode/fastEndecode2.go 0 → 100644
查看文件 @c0efc84
+++ b/fastEncryptDecode/fastEndecode2.go 0 → 100644
查看文件 @c0efc84
+package fastEncryptDecode
+
+import (
+	"bytes"
+	"crypto/aes"
+	"crypto/cipher"
+	"crypto/md5"
+	"encoding/hex"
+	"strconv"
+	"strings"
+)
+
+//md5 相关
+//string to md5
+func MD5hash(code []byte) string {
+	h := md5.New()
+	h.Write(code)
+	rs := hex.EncodeToString(h.Sum(nil))
+	return rs
+}
+
+//md5校验
+func MD5Verify(code string, md5Str string) bool {
+	codeMD5 := MD5hash([]byte(code))
+	return 0 == strings.Compare(codeMD5, md5Str)
+}
+
+type KeySizeError int
+
+func (k KeySizeError) Error() string {
+	return "fastEncryptDecode/fastEnDeCode: invalid key size " + strconv.Itoa(int(k)) + " | key size must be 16"
+}
+
+func checkKeySize(key []byte) error {
+	len := len(key)
+	if len != 16 {
+		return KeySizeError(len)
+	}
+	return nil
+}
+
+// AES encrypt pkcs7padding CBC, key for choose algorithm
+func AES_CBC_PKCS7_EncryptByte(plantText, key []byte) ([]byte, error) {
+	err := checkKeySize(key)
+	if err != nil {
+		return nil, err
+	}
+	block, err := aes.NewCipher(key)
+	if err != nil {
+		return nil, err
+	}
+	plantText = pKCS7Padding(plantText, block.BlockSize())
+	//偏转向量iv长度等于密钥key的长度
+	iv := key[:block.BlockSize()]
+	blockModel := cipher.NewCBCEncrypter(block, iv)
+
+	cipherText := make([]byte, len(plantText))
+
+	blockModel.CryptBlocks(cipherText, plantText)
+	return cipherText, nil
+}
+
+func AES_CBC_PKCS7_DecryptByte(cipherText, key []byte) ([]byte, error) {
+	err := checkKeySize(key)
+	if err != nil {
+		return nil, err
+	}
+	keyBytes := []byte(key)
+	block, err := aes.NewCipher(keyBytes)
+	if err != nil {
+		return nil, err
+	}
+	//偏转向量iv长度等于密钥key的长度
+	iv := key[:block.BlockSize()]
+	blockModel := cipher.NewCBCDecrypter(block, iv)
+	plantText := make([]byte, len(cipherText))
+	blockModel.CryptBlocks(plantText, cipherText)
+	plantText = pKCS7UnPadding(plantText, block.BlockSize())
+	return plantText, nil
+}
+
+//AES Decrypt pkcs7padding CBC, key for choose algorithm
+func pKCS7UnPadding(plantText []byte, blockSize int) []byte {
+	length := len(plantText)
+	unPadding := int(plantText[length-1])
+	return plantText[:(length - unPadding)]
+}
+
+func pKCS7Padding(cipherText []byte, blockSize int) []byte {
+	padding := blockSize - len(cipherText)%blockSize
+	padText := bytes.Repeat([]byte{byte(padding)}, padding)
+	return append(cipherText, padText...)
+}
+
+// func PKCS5Padding(cipherText []byte, blockSize int) []byte {
+// 	padding := blockSize - len(cipherText)%blockSize
+// 	padText := bytes.Repeat([]byte{byte(padding)}, padding)
+// 	return append(cipherText, padText...)
+// }
+
+// func PKCS5UnPadding(origData []byte) []byte {
+// 	length := len(origData)
+// 	// 去掉最后一个字节 unpadding 次
+// 	unpadding := int(origData[length-1])
+// 	return origData[:(length - unpadding)]
+// }
--- a/go.sum
查看文件 @c0efc84
+++ b/go.sum
查看文件 @c0efc84
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@@ -32,6 +33,7 @@ github.com/gin-gonic/gin v1.4.0/go.mod h1:OW2EZn3DO8Ln9oIKOvM++LBO+5UPHJJDH72/q/
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@@ -41,9 +43,12 @@ github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfb
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+github.com/gomodule/redigo v1.7.0 h1:ZKld1VOtsGhAe37E7wMxEDgAlGM5dvFY+DiOhSkhP9Y=
+github.com/gomodule/redigo v1.7.0/go.mod h1:B4C85qUVwatsJoIUNIfCRsp7qO0iAmpGFZ4EELWSbC4=
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@@ -60,6 +65,7 @@ github.com/kr/logfmt v0.0.0-20140226030751-b84e30acd515/go.mod h1:+0opPa2QZZtGFB
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+github.com/lib/pq v1.2.0/go.mod h1:5WUZQaWbwv1U+lTReE5YruASi9Al49XbQIvNi/34Woo=
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@@ -106,6 +112,7 @@ github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+
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