28 lines
1.4 KiB
Python
28 lines
1.4 KiB
Python
import nacl.signing, nacl.encoding, nacl.pwhash
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import onionrexceptions
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from onionrutils import bytesconverter
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from etc import onionrvalues
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def generate_pub_key():
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'''Generate a Ed25519 public key pair, return tuple of base32encoded pubkey, privkey'''
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private_key = nacl.signing.SigningKey.generate()
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public_key = private_key.verify_key.encode(encoder=nacl.encoding.Base32Encoder())
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return (public_key.decode(), private_key.encode(encoder=nacl.encoding.Base32Encoder()).decode())
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def generate_deterministic(passphrase, bypassCheck=False):
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'''Generate a Ed25519 public key pair from a password'''
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passStrength = onionrvalues.PASSWORD_LENGTH
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passphrase = bytesconverter.str_to_bytes(passphrase) # Convert to bytes if not already
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# Validate passphrase length
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if not bypassCheck:
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if len(passphrase) < passStrength:
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raise onionrexceptions.PasswordStrengthError("Passphase must be at least %s characters" % (passStrength,))
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# KDF values
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kdf = nacl.pwhash.argon2id.kdf
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salt = b"U81Q7llrQcdTP0Ux" # Does not need to be unique or secret, but must be 16 bytes
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ops = nacl.pwhash.argon2id.OPSLIMIT_SENSITIVE
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mem = nacl.pwhash.argon2id.MEMLIMIT_SENSITIVE
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key = kdf(32, passphrase, salt, opslimit=ops, memlimit=mem) # Generate seed for ed25519 key
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key = nacl.signing.SigningKey(key)
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return (key.verify_key.encode(nacl.encoding.Base32Encoder).decode(), key.encode(nacl.encoding.Base32Encoder).decode())
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