This class allows to sign, verify, encrypt and decrypt messages at all levels of escrow processing.
The algorithm includes the implementation of the PGP encryption algorithm multi-public key encryption on python. Using the vanilla ed25519 implementation Schnorr signatures for signature and curve25519 for encryption. Learn more .
Code Example
Copy from human_protocol_sdk . encryption import Encryption
private_key = """-----BEGIN PGP PRIVATE KEY BLOCK-----
xVgEZJ1mYRYJKwYBBAHaRw8BAQdAGLLi15zjuVhD4eUOYR5v40kDyRb3nrkh
0tO5pPNXBIkAAQCXERVkGLDJadkZ3yzerGQeJyxM0Xl5IaEWrzQsSCt/mwz7
zRRIdW1hbiA8aHVtYW5AaG10LmFpPsKMBBAWCgA+BQJknWZhBAsJBwgJEAyX
rIbvfPxlAxUICgQWAAIBAhkBAhsDAh4BFiEEGWQNXhKpp2hxuxetDJeshu98
/GUAAFldAP4/HVRKEso+QiphYxfAIPbCbrZ+xy6RTFAW0tdjpDQwJQD+P81w
74pFhmBFjb8Aio87M1lLRzLSXjEVpKEciGerkQjHXQRknWZhEgorBgEEAZdV
AQUBAQdA+/XEHJiIC5GtJPxgybd2TyJe5kzTyh0+uzwAgD33R3cDAQgHAAD/
brJ3/2P+H4wOTV25YBp+UVvE0MqiVrCLk5kBNJdpN8AQn8J4BBgWCAAqBQJk
nWZhCRAMl6yG73z8ZQIbDBYhBBlkDV4SqadocbsXrQyXrIbvfPxlAAC04QD+
Jyyd/rDd4bEuAvsHFQHK2HMC2r0OLVHdMjygPELEA+sBANNtHfc60ts3++D7
dhjPN+xEYS1/BntokSSwC8mi56AJ
=GMlv
-----END PGP PRIVATE KEY BLOCK-----"""
passphrase = "passphrase"
encryption = Encryption (private_key, passphrase)
Module
class human_protocol_sdk.encryption.encryption.Encryption(private_key_armored, passphrase=None)
Bases: object
A class that provides encryption and decryption functionality using PGP (Pretty Good Privacy).
__init__(private_key_armored, passphrase=None)
Initializes an Encryption instance.
Parameters:
private_key_armored (str
) – Armored representation of the private key
passphrase (Optional
[str
]) – Passphrase to unlock the private key. Defaults to None.
decrypt(message, public_key=None)
Decrypts a message using the private key.
Parameters:
message (str
) – Armored message to decrypt
public_key (Optional
[str
]) – Armored public key used for signature verification. Defaults to None.
Returns: Decrypted message
Example:
Copy from human_protocol_sdk . encryption import Encryption
private_key = """-----BEGIN PGP PRIVATE KEY BLOCK-----
xVgEZJ1mYRYJKwYBBAHaRw8BAQdAGLLi15zjuVhD4eUOYR5v40kDyRb3nrkh
0tO5pPNXBIkAAQCXERVkGLDJadkZ3yzerGQeJyxM0Xl5IaEWrzQsSCt/mwz7
zRRIdW1hbiA8aHVtYW5AaG10LmFpPsKMBBAWCgA+BQJknWZhBAsJBwgJEAyX
rIbvfPxlAxUICgQWAAIBAhkBAhsDAh4BFiEEGWQNXhKpp2hxuxetDJeshu98
/GUAAFldAP4/HVRKEso+QiphYxfAIPbCbrZ+xy6RTFAW0tdjpDQwJQD+P81w
74pFhmBFjb8Aio87M1lLRzLSXjEVpKEciGerkQjHXQRknWZhEgorBgEEAZdV
AQUBAQdA+/XEHJiIC5GtJPxgybd2TyJe5kzTyh0+uzwAgD33R3cDAQgHAAD/
brJ3/2P+H4wOTV25YBp+UVvE0MqiVrCLk5kBNJdpN8AQn8J4BBgWCAAqBQJk
nWZhCRAMl6yG73z8ZQIbDBYhBBlkDV4SqadocbsXrQyXrIbvfPxlAAC04QD+
Jyyd/rDd4bEuAvsHFQHK2HMC2r0OLVHdMjygPELEA+sBANNtHfc60ts3++D7
dhjPN+xEYS1/BntokSSwC8mi56AJ
=GMlv
-----END PGP PRIVATE KEY BLOCK-----"""
passphrase = "passphrase"
encryption = Encryption (private_key, passphrase)
decrypted_message = encryption . decrypt (encrypted_message)
sign(message)
Signs a message using the private key.
Parameters: message (str
) – Message to sign
Returns: Armored and signed message
Example:
Copy from human_protocol_sdk . encryption import Encryption
private_key = """-----BEGIN PGP PRIVATE KEY BLOCK-----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=GMlv
-----END PGP PRIVATE KEY BLOCK-----"""
passphrase = "passphrase"
encryption = Encryption (private_key, passphrase)
signed_message = await encryption . sign ( "MESSAGE" )
sign_and_encrypt(message, public_keys)
Signs and encrypts a message using the private key and recipient’s public keys.
Parameters:
message (str
) – Message to sign and encrypt
public_keys (List
[str
]) – List of armored public keys of the recipients
Returns: Armored and signed/encrypted message
Example:
Copy from human_protocol_sdk . encryption import Encryption
private_key = """-----BEGIN PGP PRIVATE KEY BLOCK-----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=GMlv
-----END PGP PRIVATE KEY BLOCK-----"""
passphrase = "passphrase"
public_key2 = """-----BEGIN PGP PUBLIC KEY BLOCK-----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=4PJh
-----END PGP PUBLIC KEY BLOCK-----"""
public_key3 = """-----BEGIN PGP PUBLIC KEY BLOCK-----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=62qY
-----END PGP PUBLIC KEY BLOCK-----"""
encryption = Encryption (private_key, passphrase)
encrypted_message = encryption . sign_and_encrypt (
"your message" , [public_key2, public_key3]
)