diff options
Diffstat (limited to 'src/lib/tlslite/utils/Python_RC4.py')
-rwxr-xr-x | src/lib/tlslite/utils/Python_RC4.py | 39 |
1 files changed, 0 insertions, 39 deletions
diff --git a/src/lib/tlslite/utils/Python_RC4.py b/src/lib/tlslite/utils/Python_RC4.py deleted file mode 100755 index 56ce5fb2f..000000000 --- a/src/lib/tlslite/utils/Python_RC4.py +++ /dev/null @@ -1,39 +0,0 @@ -"""Pure-Python RC4 implementation.""" - -from RC4 import RC4 -from cryptomath import * - -def new(key): - return Python_RC4(key) - -class Python_RC4(RC4): - def __init__(self, key): - RC4.__init__(self, key, "python") - keyBytes = stringToBytes(key) - S = [i for i in range(256)] - j = 0 - for i in range(256): - j = (j + S[i] + keyBytes[i % len(keyBytes)]) % 256 - S[i], S[j] = S[j], S[i] - - self.S = S - self.i = 0 - self.j = 0 - - def encrypt(self, plaintext): - plaintextBytes = stringToBytes(plaintext) - S = self.S - i = self.i - j = self.j - for x in range(len(plaintextBytes)): - i = (i + 1) % 256 - j = (j + S[i]) % 256 - S[i], S[j] = S[j], S[i] - t = (S[i] + S[j]) % 256 - plaintextBytes[x] ^= S[t] - self.i = i - self.j = j - return bytesToString(plaintextBytes) - - def decrypt(self, ciphertext): - return self.encrypt(ciphertext) |