beembase.memo

beembase.memo.decode_memo(priv, message)

Decode a message with a shared secret between Alice and Bob

Parameters:
  • priv (PrivateKey) – Private Key (of Bob)
  • message (base58encoded) – Encrypted Memo message
Returns:

Decrypted message
Return type:

str
Raises:

ValueError – if message cannot be decoded as valid UTF-8 string
beembase.memo.decode_memo_bts(priv, pub, nonce, message)

Decode a message with a shared secret between Alice and Bob

Parameters:
  • priv (PrivateKey) – Private Key (of Bob)
  • pub (PublicKey) – Public Key (of Alice)
  • nonce (int) – Nonce used for Encryption
  • message (bytes) – Encrypted Memo message
Returns:

Decrypted message
Return type:

str
Raises:

ValueError – if message cannot be decoded as valid UTF-8 string
beembase.memo.encode_memo(priv, pub, nonce, message, **kwargs)

Encode a message with a shared secret between Alice and Bob

Parameters:
  • priv (PrivateKey) – Private Key (of Alice)
  • pub (PublicKey) – Public Key (of Bob)
  • nonce (int) – Random nonce
  • message (str) – Memo message
Returns:

Encrypted message
Return type:

hex
beembase.memo.encode_memo_bts(priv, pub, nonce, message)

Encode a message with a shared secret between Alice and Bob

Parameters:
  • priv (PrivateKey) – Private Key (of Alice)
  • pub (PublicKey) – Public Key (of Bob)
  • nonce (int) – Random nonce
  • message (str) – Memo message
Returns:

Encrypted message
Return type:

hex
beembase.memo.extract_memo_data(message)

Returns the stored pubkey keys, nonce, checksum and encrypted message of a memo

beembase.memo.get_shared_secret(priv, pub)

Derive the share secret between priv and pub :param Base58 priv: Private Key :param Base58 pub: Public Key :return: Shared secret :rtype: hex The shared secret is generated such that:

Pub(Alice) * Priv(Bob) = Pub(Bob) * Priv(Alice)
beembase.memo.init_aes(shared_secret, nonce)

Initialize AES instance :param hex shared_secret: Shared Secret to use as encryption key :param int nonce: Random nonce

beembase.memo.init_aes_bts(shared_secret, nonce)

Initialize AES instance :param hex shared_secret: Shared Secret to use as encryption key :param int nonce: Random nonce :return: AES instance :rtype: AES