def decrypt(input):
"""Decrypts the given hexadecimally-encoded string in conformity
with CryptUnprotectData.
Arguments:
input -- the encrypted input string in hexadecimal format.
Returns:
output -- string containing the output of decryption.
"""
# de-hex the input:
rawinput = decode(input, "hex")
data = create_string_buffer(rawinput, len(rawinput))
# create out various Blobs:
input_blob = Blob(len(rawinput), data)
output_blob = Blob()
dwflags = 0x01
# call CryptUnprotectData:
res = unprotect_data(byref(input_blob), u"", byref(Blob()), None, None,
dwflags, byref(output_blob))
input_blob.free_blob()
# check return code:
if res == 0:
output_blob.free_blob()
raise Exception("Failed to decrypt: %s" + input)
else:
raw = output_blob.get_data()
output_blob.free_blob()
# decode the resulting data from UTF-16:
return decode(raw, "utf-16")
def decrypt(input):
"""Decrypts the given hexadecimally-encoded string in conformity
with CryptUnprotectData.
Arguments:
input -- the encrypted input string in hexadecimal format.
Returns:
output -- string containing the output of decryption.
"""
# de-hex the input:
rawinput = decode(input, "hex")
data = create_string_buffer(rawinput, len(rawinput))
# create out various Blobs:
input_blob = Blob(len(rawinput), data)
output_blob = Blob()
dwflags = 0x01
# call CryptUnprotectData:
res = unprotect_data(byref(input_blob), u"", byref(Blob()), None,
None, dwflags, byref(output_blob))
input_blob.free_blob()
# check return code:
if res == 0:
output_blob.free_blob()
raise Exception("Failed to decrypt: %s" + input)
else:
raw = output_blob.get_data()
output_blob.free_blob()
# decode the resulting data from UTF-16:
return decode(raw, "utf-16")
def encrypt(input):
"""Encrypts the given string following the same syscalls as done by
ConvertFrom-SecureString.
Arguments:
input -- an input string.
Returns:
output -- string containing the output of the encryption in hexadecimal.
"""
# CryptProtectData takes UTF-16; so we must convert the data here:
encoded = input.encode("utf-16")
data = create_string_buffer(encoded, len(encoded))
# create our various Blobs:
input_blob = Blob(len(encoded), data)
output_blob = Blob()
flag = 0x01
# call CryptProtectData:
res = protect_data(byref(input_blob), u"", byref(Blob()), None, None, flag,
byref(output_blob))
input_blob.free_blob()
# check return code:
if res == 0:
output_blob.free_blob()
raise Exception("Failed to encrypt: %s" % input)
else:
raw = output_blob.get_data()
output_blob.free_blob()
# encode the resulting bytes into hexadecimal before returning:
hex = encode(raw, "hex")
return decode(hex, "utf-8").upper()
def encrypt(input):
"""Encrypts the given string following the same syscalls as done by
ConvertFrom-SecureString.
Arguments:
input -- an input string.
Returns:
output -- string containing the output of the encryption in hexadecimal.
"""
# CryptProtectData takes UTF-16; so we must convert the data here:
encoded = input.encode("utf-16")
data = create_string_buffer(encoded, len(encoded))
# create our various Blobs:
input_blob = Blob(len(encoded), data)
output_blob = Blob()
flag = 0x01
# call CryptProtectData:
res = protect_data(byref(input_blob), u"", byref(Blob()), None,
None, flag, byref(output_blob))
input_blob.free_blob()
# check return code:
if res == 0:
output_blob.free_blob()
raise Exception("Failed to encrypt: %s" % input)
else:
raw = output_blob.get_data()
output_blob.free_blob()
# encode the resulting bytes into hexadecimal before returning:
hex = encode(raw, "hex")
return decode(hex, "utf-8").upper()
