gador/smtprd-ng
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use aes_256 instead of des

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Signed-off-by: Florian Brandes <florian.brandes@posteo.de>
This commit is contained in:
Florian Brandes
2024-07-06 08:17:22 +02:00
parent 837541dab9
commit e1113f0052
1 changed files with 2 additions and 14 deletions
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16
smtprd_ng/smtprd.py
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@@ -172,13 +172,7 @@ class SMTPClient(SMTP):
Returns: Returns:
bytes: Encrypted message bytes: Encrypted message
""" """
# Make a MemoryBuffer of the message.
buf = BIO.MemoryBuffer(message) buf = BIO.MemoryBuffer(message)
# Seed the PRNG.
# Rand.load_file('randpool.dat', -1)
# Instantiate an SMIME object.
s = SMIME.SMIME() s = SMIME.SMIME()
# Load target cert to encrypt to. # Load target cert to encrypt to.
@@ -187,9 +181,7 @@ class SMTPClient(SMTP):
sk.push(x509) sk.push(x509)
s.set_x509_stack(sk) s.set_x509_stack(sk)
# Set cipher: 3-key triple-DES in CBC mode. s.set_cipher(SMIME.Cipher("aes_256_cbc"))
# TODO: Evaluate later
s.set_cipher(SMIME.Cipher("des_ede3_cbc"))
# Encrypt the buffer. # Encrypt the buffer.
p7 = s.encrypt(buf) p7 = s.encrypt(buf)
@@ -197,16 +189,12 @@ class SMTPClient(SMTP):
# Output p7 in mail-friendly format. # Output p7 in mail-friendly format.
out = BIO.MemoryBuffer() out = BIO.MemoryBuffer()
# Add header
out.write("From: " + self._config.sender + "\r\n") out.write("From: " + self._config.sender + "\r\n")
out.write("To: " + ", ".join(self._config.recipients) + "\r\n") out.write("To: " + ", ".join(self._config.recipients) + "\r\n")
out.write("Subject: " + subject + "\r\n") out.write("Subject: " + subject + "\r\n")
s.write(out, p7) s.write(out, p7)
# print(out.read().decode())
# Save the PRNG's state.
# Rand.save_file('randpool.dat')
return out.read() return out.read()
def _sign(self, message: Message) -> bytes: def _sign(self, message: Message) -> bytes: