eciespy

library0.4.6pypypi✓ verified 88d ago

Elliptic Curve Integrated Encryption Scheme (ECIES) for secp256k1 and curve25519 in Python. Current version 0.4.6, supports Python >=3.9. Active development with multi-curve support and custom key pair generation.

auth-security serialization

pip install eciespy

github ↗package ↗

INSTALL

IMPORT

SIG · ECIESPY

eciespy

auth-securitypythonv0.4.6

harness data pending

Install & Compatibility

Where this runs

No compatibility data collected yet for this library.

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

encrypt

✓ from ecies import encrypt

✗ from eciespy import encrypt

eciespy is the package name but the module is ecies

decrypt

✓ from ecies import decrypt

✗ from eciespy import decrypt

Same as encrypt, use ecies module

Basic encrypt/decrypt with secp256k1 keys.

import os from ecies import encrypt, decrypt # Generate a private key (hex) private_key = os.urandom(32).hex() # Derive public key (hex, uncompressed) # ecies can also use Ethereum-style keys # For quickstart, we use a known key pair: privkey = '0x0000000000000000000000000000000000000000000000000000000000000001' pubkey = '0x79be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798' # Encrypt plaintext = b'Hello, ECIES!' ciphertext = encrypt(pubkey, plaintext) # Decrypt assert decrypt(privkey, ciphertext) == plaintext print('Success!')

Debug

Known issues

breakingIn v0.4.5, functions in ecies.utils are deprecated and will be removed after v0.5.0. Use ecies.keys or ecies.consts instead.

fix

Replace ecies.utils.xxx with new API from ecies.keys or ecies.consts.

affects: >=0.4.5

deprecatedThe eth-keys dependency is optional since v0.4.4 and will be removed eventually. Ethereum-style keys may stop working.

fix

Switch to homemade key pairs via ecies.keys.HomemadeKey or use the built-in key generation.

affects: >=0.4.4

gotchaKeys must be hex strings with or without '0x' prefix. Encryption expects uncompressed public key (130 hex chars with '04' prefix) or compressed (66 hex chars).

fix

Ensure public key is valid uncompressed '04' + 64 bytes or compressed '02'/'03' + 32 bytes.

affects: all

Errors

Common errors & fixes

ImportError: cannot import name 'encrypt' from 'eciespy'

Wrong import path; the package is 'eciespy' but the module is 'ecies'.

fix

Use 'from ecies import encrypt, decrypt' instead of 'eciespy'.

ValueError: Public key format is not correct

Public key not in valid hex, or missing '04' prefix for uncompressed key.

fix

Ensure public key is hex (130 or 66 characters) and starts with '04' for uncompressed.

AttributeError: module 'ecies.utils' has no attribute 'generate_key_pair'

Function was deprecated and moved in v0.4.5.

fix

Use 'from ecies.keys import generate_key_pair' or HomemadeKey.

Upgrade

Version history

0.4.6latest on PyPI · released Jul 21, 2025

Audit

Dependencies

No dependency data recorded yet.

Agent activity

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Resources

githubhttps://github.com/ecies/py ↗

packagehttps://pypi.org/project/eciespy/ ↗