def test_AsymCrypto_With_Seeded_Keypair(self):
msg = "correct horse battery staple"
nonce = pysodium.randombytes(pysodium.crypto_box_NONCEBYTES)
pk, sk = pysodium.crypto_box_seed_keypair("howdy")
c = pysodium.crypto_box_easy(msg, nonce, pk, sk)
m = pysodium.crypto_box_open_easy(c, nonce, pk, sk)
self.assertEqual(msg, m)
def test_AsymCrypto_With_Seeded_Keypair(self):
msg = "correct horse battery staple"
nonce = pysodium.randombytes(pysodium.crypto_box_NONCEBYTES)
pk, sk = pysodium.crypto_box_seed_keypair("howdy")
c = pysodium.crypto_box_easy(msg, nonce, pk, sk)
m = pysodium.crypto_box_open_easy(c, nonce, pk, sk)
self.assertEqual(msg, m)
def decrypt(rsk, msg):
"""
Decrypt a message using the provided information.
"""
spk, nonce, enc_msg = msg.split(b':')
spk = base64.b64decode(spk)
rsk = base64.b64decode(rsk)
nonce = base64.b64decode(nonce)
enc_msg = base64.b64decode(enc_msg)
# A ValueError is raised when decryption fails. Need to cactch it.
try:
dec_msg = pysodium.crypto_box_open_easy(enc_msg, nonce, spk, rsk)
except ValueError:
dec_msg = ''
# Return the sender's public key and the decrypted message.
return base64.b64encode(spk), dec_msg
def decrypt(rsk, msg):
"""
Decrypt a message using the provided information.
"""
spk, nonce, enc_msg = msg.split(b':')
spk = base64.b64decode(spk)
rsk = base64.b64decode(rsk)
nonce = base64.b64decode(nonce)
enc_msg = base64.b64decode(enc_msg)
# A ValueError is raised when decryption fails. Need to cactch it.
try:
dec_msg = pysodium.crypto_box_open_easy(enc_msg, nonce, spk, rsk)
except ValueError:
dec_msg = ''
# Return the sender's public key and the decrypted message.
return base64.b64encode(spk), dec_msg
