1 files changed, 0 insertions, 74 deletions
diff --git a/pysnmp/crypto/des.py b/pysnmp/crypto/des.py
deleted file mode 100644
index 12ce611b..00000000
--- a/pysnmp/crypto/des.py
+++ /dev/null
@@ -1,74 +0,0 @@
-"""
-Crypto logic for RFC3414.
-
-https://tools.ietf.org/html/rfc3414
-"""
-from pysnmp.crypto import backend, CRYPTODOME, CRYPTOGRAPHY, generic_decrypt, generic_encrypt
-
-if backend == CRYPTOGRAPHY:
-    from cryptography.hazmat.backends import default_backend
-    from cryptography.hazmat.primitives.ciphers import algorithms, Cipher, modes
-elif backend == CRYPTODOME:
-    from Cryptodome.Cipher import DES
-
-
-def _cryptodome_cipher(key, iv):
-    """Build a Pycryptodome DES Cipher object.
-
-    :param bytes key: Encryption key
-    :param bytes IV: Initialization vector
-    :returns: DES Cipher instance
-    """
-    return DES.new(key, DES.MODE_CBC, iv)
-
-
-def _cryptography_cipher(key, iv):
-    """Build a cryptography DES(-like) Cipher object.
-
-    .. note::
-
-        pyca/cryptography does not support DES directly because it is a seriously old, insecure,
-        and deprecated algorithm. However, triple DES is just three rounds of DES (encrypt,
-        decrypt, encrypt) done by taking a key three times the size of a DES key and breaking
-        it into three pieces. So triple DES with des_key * 3 is equivalent to DES.
-
-    :param bytes key: Encryption key
-    :param bytes IV: Initialization vector
-    :returns: TripleDES Cipher instance providing DES behavior by using provided DES key
-    :rtype: cryptography.hazmat.primitives.ciphers.Cipher
-    """
-    return Cipher(
-        algorithm=algorithms.TripleDES(key * 3),
-        mode=modes.CBC(iv),
-        backend=default_backend()
-    )
-
-
-_CIPHER_FACTORY_MAP = {
-    CRYPTOGRAPHY: _cryptography_cipher,
-    CRYPTODOME: _cryptodome_cipher
-}
-
-
-def encrypt(plaintext, key, iv):
-    """Encrypt data using DES on the available backend.
-
-    :param bytes plaintext: Plaintext data to encrypt
-    :param bytes key: Encryption key
-    :param bytes IV: Initialization vector
-    :returns: Encrypted ciphertext
-    :rtype: bytes
-    """
-    return generic_encrypt(_CIPHER_FACTORY_MAP, plaintext, key, iv)
-
-
-def decrypt(ciphertext, key, iv):
-    """Decrypt data using DES on the available backend.
-
-    :param bytes ciphertext: Ciphertext data to decrypt
-    :param bytes key: Encryption key
-    :param bytes IV: Initialization vector
-    :returns: Decrypted plaintext
-    :rtype: bytes
-    """
-    return generic_decrypt(_CIPHER_FACTORY_MAP, ciphertext, key, iv)