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DES ​

DES (Data Encryption Standard) is a symmetric encryption algorithm that uses an 8-byte key. dongle supports standard DES encryption and provides multiple block modes, padding modes, and output formats.

Supported block modes:

  • CBC（Cipher Block Chaining）: Cipher Block Chaining mode, requires setting key Key, initialization vector IV (8 bytes), and padding mode Padding
  • CTR（Counter）: Counter mode, requires setting key Key and initialization vector IV (8 bytes)
  • GCM（Galois/Counter Mode）: Galois/Counter mode, requires setting key Key, nonce Nonce (8 bytes), and additional authenticated data AAD
  • ECB（Electronic Codebook）: Electronic Codebook mode, requires setting key Key and padding mode Padding
  • CFB（Cipher Feedback）: Cipher Feedback mode, requires setting key Key and initialization vector IV (8 bytes)
  • OFB（Output Feedback）: Output Feedback mode, requires setting key Key and initialization vector IV (8 bytes)

Supported padding modes:

  • No: No padding, plaintext length must be a multiple of 8
  • Zero: Zero padding, fills with zero bytes to block boundary, if plaintext length is not a multiple of 8, fills with 0x00 bytes
  • PKCS7: PKCS#7 padding, most commonly used padding method, fills with N bytes of value N, where N is the number of padding bytes
  • PKCS5: PKCS#5 padding, suitable for 8-byte block size, fills with N bytes of value N, where N is the number of padding bytes
  • AnsiX923: ANSI X.923 padding, fills with 0x00 except the last byte, the last byte indicates the number of padding bytes
  • ISO97971: ISO/IEC 9797-1 padding, first byte is 0x80, rest filled with 0x00
  • ISO10126: ISO/IEC 10126 padding, fills with random bytes except the last byte, the last byte indicates the number of padding bytes
  • ISO78164: ISO/IEC 7816-4 padding, first byte is 0x80, rest filled with 0x00
  • Bit: Bit padding, adds a 1 bit at the end of plaintext, then fills with 0 bits to block boundary

CBC Mode ​

Create Cipher ​

go
import "github.com/dromara/dongle/crypto/cipher"

c := cipher.NewDesCipher(cipher.CBC)
// Set key (8 bytes)
c.SetKey([]byte("12345678"))
// Set initialization vector (8 bytes)
c.SetIV([]byte("87654321"))
// Set padding mode (optional, default is PKCS7)
c.SetPadding(cipher.PKCS7)

Encrypt Data ​

Input Data

go
// Input string
encrypter := dongle.Encrypt.FromString("hello world").ByDes(c)
// Input byte slice
encrypter := dongle.Encrypt.FromBytes([]byte("hello world")).ByDes(c)
// Input file stream
file, _ := os.Open("test.txt")
encrypter := dongle.Encrypt.FromFile(file).ByDes(c)

// Check encryption error
if encrypter.Error != nil {
	fmt.Printf("Encryption error: %v\n", encrypter.Error)
	return
}

Output Data

go
// Output Hex encoded string
encrypter.ToHexString() // 7fae94fd1a8b880d8d5454dd8df30c40
// Output Hex encoded byte slice
encrypter.ToHexBytes()   // []byte("7fae94fd1a8b880d8d5454dd8df30c40")

// Output Base64 encoded string
encrypter.ToBase64String() // f66U/RqLiA2NVFTdjfMMQA==
// Output Base64 encoded byte slice
encrypter.ToBase64Bytes()   // []byte("f66U/RqLiA2NVFTdjfMMQA==")

// Output raw string
encrypter.ToRawString()
// Output raw byte slice
encrypter.ToRawBytes()

Decrypt Data ​

Input Data

go
// Input Hex encoded string
decrypter := dongle.Decrypt.FromHexString(hexString).ByDes(c)
// Input Hex encoded byte slice
decrypter := dongle.Decrypt.FromHexBytes(hexBytes).ByDes(c)
// Input Hex encoded file stream
file, _ := os.Open("encrypted.hex")
decrypter := dongle.Decrypt.FromHexFile(file).ByDes(c)

// Input Base64 encoded string
decrypter := dongle.Decrypt.FromBase64String(base64String).ByDes(c)
// Input Base64 encoded byte slice
decrypter := dongle.Decrypt.FromBase64Bytes(base64Bytes).ByDes(c)
// Input Base64 encoded ciphertext file
file, _ := os.Open("encrypted.base64")
decrypter := dongle.Decrypt.FromBase64File(file).ByDes(c)

// Input unencoded raw string
decrypter := dongle.Decrypt.FromRawString(rawString).ByDes(c)
// Input unencoded raw byte slice
decrypter := dongle.Decrypt.FromRawBytes(rawBytes).ByDes(c)
// Input unencoded raw file
file, _ := os.Open("encrypted.bin")
decrypter := dongle.Decrypt.FromRawFile(file).ByDes(c)

// Check decryption error
if decrypter.Error != nil {
	fmt.Printf("Decryption error: %v\n", decrypter.Error)
	return
}

Output Data

go
// Output decrypted string
decrypter.ToString() // hello world
// Output decrypted byte slice
decrypter.ToBytes()  // []byte("hello world")

CTR Mode ​

Create Cipher ​

go
import "github.com/dromara/dongle/crypto/cipher"

c := cipher.NewDesCipher(cipher.CTR)
// Set key (8 bytes)
c.SetKey([]byte("12345678"))
// Set initialization vector (8 bytes)
c.SetIV([]byte("87654321"))

Encrypt Data ​

Input Data

go
// Input string
encrypter := dongle.Encrypt.FromString("hello world").ByDes(c)
// Input byte slice
encrypter := dongle.Encrypt.FromBytes([]byte("hello world")).ByDes(c)
// Input file stream
file, _ := os.Open("test.txt")
encrypter := dongle.Encrypt.FromFile(file).ByDes(c)

// Check encryption error
if encrypter.Error != nil {
	fmt.Printf("Encryption error: %v\n", encrypter.Error)
	return
}

Output Data

go
// Output Hex encoded string
encrypter.ToHexString() // 7fae94fd1a8b880d8d5454dd8df30c40
// Output Hex encoded byte slice
encrypter.ToHexBytes()   // []byte("7fae94fd1a8b880d8d5454dd8df30c40")

// Output Base64 encoded string
encrypter.ToBase64String() // f66U/RqLiA2NVFTdjfMMQA==
// Output Base64 encoded byte slice
encrypter.ToBase64Bytes()   // []byte("f66U/RqLiA2NVFTdjfMMQA==")

// Output raw string
encrypter.ToRawString()
// Output raw byte slice
encrypter.ToRawBytes()

Decrypt Data ​

Input Data

go
// Input Hex encoded string
decrypter := dongle.Decrypt.FromHexString(hexString).ByDes(c)
// Input Hex encoded byte slice
decrypter := dongle.Decrypt.FromHexBytes(hexBytes).ByDes(c)
// Input Hex encoded file stream
file, _ := os.Open("encrypted.hex")
decrypter := dongle.Decrypt.FromHexFile(file).ByDes(c)

// Input Base64 encoded string
decrypter := dongle.Decrypt.FromBase64String(base64String).ByDes(c)
// Input Base64 encoded byte slice
decrypter := dongle.Decrypt.FromBase64Bytes(base64Bytes).ByDes(c)
// Input Base64 encoded ciphertext file
file, _ := os.Open("encrypted.base64")
decrypter := dongle.Decrypt.FromBase64File(file).ByDes(c)

// Input unencoded raw string
decrypter := dongle.Decrypt.FromRawString(rawString).ByDes(c)
// Input unencoded raw byte slice
decrypter := dongle.Decrypt.FromRawBytes(rawBytes).ByDes(c)
// Input unencoded raw file
file, _ := os.Open("encrypted.bin")
decrypter := dongle.Decrypt.FromRawFile(file).ByDes(c)

// Check decryption error
if decrypter.Error != nil {
	fmt.Printf("Decryption error: %v\n", decrypter.Error)
	return
}

Output Data

go
// Output decrypted string
decrypter.ToString() // hello world
// Output decrypted byte slice
decrypter.ToBytes()  // []byte("hello world")

GCM Mode ​

GCM mode provides authenticated encryption functionality and supports additional authenticated data (AAD).

Create Cipher ​

go
import "github.com/dromara/dongle/crypto/cipher"

c := cipher.NewDesCipher(cipher.GCM)
// Set key (8 bytes)
c.SetKey([]byte("12345678"))
// Set nonce (8 bytes)
c.SetNonce([]byte("87654321"))
// Set additional authenticated data (optional)
c.SetAAD([]byte("additional data"))

Encrypt Data ​

Input Data

go
// Input string
encrypter := dongle.Encrypt.FromString("hello world").ByDes(c)
// Input byte slice
encrypter := dongle.Encrypt.FromBytes([]byte("hello world")).ByDes(c)
// Input file stream
file, _ := os.Open("test.txt")
encrypter := dongle.Encrypt.FromFile(file).ByDes(c)

// Check encryption error
if encrypter.Error != nil {
	fmt.Printf("Encryption error: %v\n", encrypter.Error)
	return
}

Output Data

go
// Output Hex encoded string
encrypter.ToHexString() // 7fae94fd1a8b880d8d5454dd8df30c40
// Output Hex encoded byte slice
encrypter.ToHexBytes()   // []byte("7fae94fd1a8b880d8d5454dd8df30c40")

// Output Base64 encoded string
encrypter.ToBase64String() // f66U/RqLiA2NVFTdjfMMQA==
// Output Base64 encoded byte slice
encrypter.ToBase64Bytes()   // []byte("f66U/RqLiA2NVFTdjfMMQA==")

// Output raw string
encrypter.ToRawString()
// Output raw byte slice
encrypter.ToRawBytes()

Decrypt Data ​

Input Data

go
// Input Hex encoded string
decrypter := dongle.Decrypt.FromHexString(hexString).ByDes(c)
// Input Hex encoded byte slice
decrypter := dongle.Decrypt.FromHexBytes(hexBytes).ByDes(c)
// Input Hex encoded file stream
file, _ := os.Open("encrypted.hex")
decrypter := dongle.Decrypt.FromHexFile(file).ByDes(c)

// Input Base64 encoded string
decrypter := dongle.Decrypt.FromBase64String(base64String).ByDes(c)
// Input Base64 encoded byte slice
decrypter := dongle.Decrypt.FromBase64Bytes(base64Bytes).ByDes(c)
// Input Base64 encoded ciphertext file
file, _ := os.Open("encrypted.base64")
decrypter := dongle.Decrypt.FromBase64File(file).ByDes(c)

// Input unencoded raw string
decrypter := dongle.Decrypt.FromRawString(rawString).ByDes(c)
// Input unencoded raw byte slice
decrypter := dongle.Decrypt.FromRawBytes(rawBytes).ByDes(c)
// Input unencoded raw file
file, _ := os.Open("encrypted.bin")
decrypter := dongle.Decrypt.FromRawFile(file).ByDes(c)

// Check decryption error
if decrypter.Error != nil {
	fmt.Printf("Decryption error: %v\n", decrypter.Error)
	return
}

Output Data

go
// Output decrypted string
decrypter.ToString() // hello world
// Output decrypted byte slice
decrypter.ToBytes()  // []byte("hello world")

ECB Mode ​

Create Cipher ​

go
import "github.com/dromara/dongle/crypto/cipher"

c := cipher.NewDesCipher(cipher.ECB)
// Set key (8 bytes)
c.SetKey([]byte("12345678"))
// Set padding mode (optional, default is PKCS7)
c.SetPadding(cipher.PKCS7)

Encrypt Data ​

Input Data

go
// Input string
encrypter := dongle.Encrypt.FromString("hello world").ByDes(c)
// Input byte slice
encrypter := dongle.Encrypt.FromBytes([]byte("hello world")).ByDes(c)
// Input file stream
file, _ := os.Open("test.txt")
encrypter := dongle.Encrypt.FromFile(file).ByDes(c)

// Check encryption error
if encrypter.Error != nil {
	fmt.Printf("Encryption error: %v\n", encrypter.Error)
	return
}

Output Data

go
// Output Hex encoded string
encrypter.ToHexString() // 7fae94fd1a8b880d8d5454dd8df30c40
// Output Hex encoded byte slice
encrypter.ToHexBytes()   // []byte("7fae94fd1a8b880d8d5454dd8df30c40")

// Output Base64 encoded string
encrypter.ToBase64String() // f66U/RqLiA2NVFTdjfMMQA==
// Output Base64 encoded byte slice
encrypter.ToBase64Bytes()   // []byte("f66U/RqLiA2NVFTdjfMMQA==")

// Output raw string
encrypter.ToRawString()
// Output raw byte slice
encrypter.ToRawBytes()

Decrypting Data ​

Input Data

go
// Input unencoded raw string
decrypter := dongle.Decrypt.FromRawString(rawString).ByDes(c)
// Input unencoded raw byte slice
decrypter := dongle.Decrypt.FromRawBytes(rawBytes).ByDes(c)
// Input unencoded raw file
file, _ := os.Open("encrypted.bin") 
decrypter := dongle.Decrypt.FromRawFile(file).ByDes(c)

// Input Hex encoded string
decrypter := dongle.Decrypt.FromHexString(hexString).ByDes(c)
// Input Hex encoded byte slice
decrypter := dongle.Decrypt.FromHexBytes(hexBytes).ByDes(c)
// Input Hex encoded file
file, _ := os.Open("encrypted.hex")
decrypter := dongle.Decrypt.FromHexFile(file).ByDes(c)

// Input Base64 encoded string
decrypter := dongle.Decrypt.FromBase64String(base64String).ByDes(c)
// Input Base64 encoded byte slice
decrypter := dongle.Decrypt.FromBase64Bytes(base64Bytes).ByDes(c)
// Input Base64 encoded ciphertext file
file, _ := os.Open("encrypted.base64")
decrypter := dongle.Decrypt.FromBase64File(file).ByDes(c)

Output Data

go
// Output decrypted string
decrypter.ToString() // hello world
// Output decrypted byte slice
decrypter.ToBytes()  // []byte("hello world")

CFB Mode ​

Create Cipher ​

go
import "github.com/dromara/dongle/crypto/cipher"

c := cipher.NewDesCipher(cipher.CFB)
// Set key (8 bytes)
c.SetKey([]byte("12345678"))
// Set initialization vector (8 bytes)
c.SetIV([]byte("87654321"))

Encrypt Data ​

Input Data

go
// Input string
encrypter := dongle.Encrypt.FromString("hello world").ByDes(c)
// Input byte slice
encrypter := dongle.Encrypt.FromBytes([]byte("hello world")).ByDes(c)
// Input file stream
file, _ := os.Open("test.txt")
encrypter := dongle.Encrypt.FromFile(file).ByDes(c)

// Check encryption error
if encrypter.Error != nil {
	fmt.Printf("Encryption error: %v\n", encrypter.Error)
	return
}

Output Data

go
// Output Hex encoded string
encrypter.ToHexString() // 7fae94fd1a8b880d8d5454dd8df30c40
// Output Hex encoded byte slice
encrypter.ToHexBytes()   // []byte("7fae94fd1a8b880d8d5454dd8df30c40")

// Output Base64 encoded string
encrypter.ToBase64String() // f66U/RqLiA2NVFTdjfMMQA==
// Output Base64 encoded byte slice
encrypter.ToBase64Bytes()   // []byte("f66U/RqLiA2NVFTdjfMMQA==")

// Output raw string
encrypter.ToRawString()
// Output raw byte slice
encrypter.ToRawBytes()

Decrypt Data ​

Input Data

go
// Input unencoded raw string
decrypter := dongle.Decrypt.FromRawString(rawString).ByDes(c)
// Input unencoded raw byte slice
decrypter := dongle.Decrypt.FromRawBytes(rawBytes).ByDes(c)
// Input unencoded raw file
file, _ := os.Open("encrypted.bin") 
decrypter := dongle.Decrypt.FromRawFile(file).ByDes(c)

// Input Hex encoded string
decrypter := dongle.Decrypt.FromHexString(hexString).ByDes(c)
// Input Hex encoded byte slice
decrypter := dongle.Decrypt.FromHexBytes(hexBytes).ByDes(c)
// Input Hex encoded file stream
file, _ := os.Open("encrypted.hex")
decrypter := dongle.Decrypt.FromHexFile(file).ByDes(c)

// Input Base64 encoded string
decrypter := dongle.Decrypt.FromBase64String(base64String).ByDes(c)
// Input Base64 encoded byte slice
decrypter := dongle.Decrypt.FromBase64Bytes(base64Bytes).ByDes(c)
// Input Base64 encoded ciphertext file
file, _ := os.Open("encrypted.base64")
decrypter := dongle.Decrypt.FromBase64File(file).ByDes(c)

// Check decryption error
if decrypter.Error != nil {
	fmt.Printf("Decryption error: %v\n", decrypter.Error)
	return
}

Output Data

go
// Output decrypted string
decrypter.ToString() // hello world
// Output decrypted byte slice
decrypter.ToBytes()  // []byte("hello world")

OFB Mode ​

Create Cipher ​

go
import "github.com/dromara/dongle/crypto/cipher"

c := cipher.NewDesCipher(cipher.OFB)
// Set key (8 bytes)
c.SetKey([]byte("12345678"))
// Set initialization vector (8 bytes)
c.SetIV([]byte("87654321"))

Encrypt Data ​

Input Data

go
// Input string
encrypter := dongle.Encrypt.FromString("hello world").ByDes(c)
// Input byte slice
encrypter := dongle.Encrypt.FromBytes([]byte("hello world")).ByDes(c)
// Input file stream
file, _ := os.Open("test.txt")
encrypter := dongle.Encrypt.FromFile(file).ByDes(c)

// Check encryption error
if encrypter.Error != nil {
	fmt.Printf("Encryption error: %v\n", encrypter.Error)
	return
}

Output Data

go
// Output Hex encoded string
encrypter.ToHexString() // 7fae94fd1a8b880d8d5454dd8df30c40
// Output Hex encoded byte slice
encrypter.ToHexBytes()   // []byte("7fae94fd1a8b880d8d5454dd8df30c40")

// Output Base64 encoded string
encrypter.ToBase64String() // f66U/RqLiA2NVFTdjfMMQA==
// Output Base64 encoded byte slice
encrypter.ToBase64Bytes()   // []byte("f66U/RqLiA2NVFTdjfMMQA==")

// Output raw string
encrypter.ToRawString()
// Output raw byte slice
encrypter.ToRawBytes()

Decrypt Data ​

Input Data

go
// Input unencoded raw string
decrypter := dongle.Decrypt.FromRawString(rawString).ByDes(c)
// Input unencoded raw byte slice
decrypter := dongle.Decrypt.FromRawBytes(rawBytes).ByDes(c)
// Input unencoded raw file
file, _ := os.Open("encrypted.bin") 
decrypter := dongle.Decrypt.FromRawFile(file).ByDes(c)

// Input Hex encoded string
decrypter := dongle.Decrypt.FromHexString(hexString).ByDes(c)
// Input Hex encoded byte slice
decrypter := dongle.Decrypt.FromHexBytes(hexBytes).ByDes(c)
// Input Hex encoded file stream
file, _ := os.Open("encrypted.hex")
decrypter := dongle.Decrypt.FromHexFile(file).ByDes(c)

// Input Base64 encoded string
decrypter := dongle.Decrypt.FromBase64String(base64String).ByDes(c)
// Input Base64 encoded byte slice
decrypter := dongle.Decrypt.FromBase64Bytes(base64Bytes).ByDes(c)
// Input Base64 encoded ciphertext file
file, _ := os.Open("encrypted.base64")
decrypter := dongle.Decrypt.FromBase64File(file).ByDes(c)

// Check decryption error
if decrypter.Error != nil {
	fmt.Printf("Decryption error: %v\n", decrypter.Error)
	return
}

Output Data

go
// Output decrypted string
decrypter.ToString() // hello world
// Output decrypted byte slice
decrypter.ToBytes()  // []byte("hello world")

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