ASN.1 schema for composite public keys, private keys, and signatures for post-quantum Internet PKI drafts.

Polymesh SDK signing manager signing transactions with mnemonic based private keys

A simple standard interface for a series of Ethereum private keys.

Decrypt encrypted ssh private keys

Classes for managing, encrypting and decrypting ECDSA private keys as a Signer for hethers.

Verify the current GitHub user via their private keys

A simple standard interface for a series of Starcoin private keys.

BIP38 is a standard process to encrypt Bitcoin and crypto currency private keys that is impervious to brute force attacks thus protecting the user.

A simple standard interface for a series of Ethereum private keys.

Library for encoding ECDSA private keys to PEM, DER and raw hex formats

TKey Private Keys Module

A simple standard interface for a series of Conflux private keys.

Use [Shamir's secret sharing](https://en.wikipedia.org/wiki/Shamir%27s_secret_sharing) with [@wharfkit/antelope](https://github.com/wharfkit/antelope) Public/Private Keys to encrypt and decrypt a message.

A simple standard interface for a series of Ethereum private keys.

This package provides functionality to sign PDF documents using various signing methods, including private keys, P12 containers, and Google Cloud. It is designed to be used with the Documenso platform.

JavaScript component for private keys, public keys, and addresses for crypto currencies such as Bitcoin, Litecoin, and Dogecoin

Keyknox SDK allows developers to communicate with Virgil Keyknox Service to upload, download, and synchronize encrypted sensitive data (private keys) between different devices.

Local signer SDK for Achswap AI agents — private keys never leave your machine.

AWS/GCP KMS-based Ethereum signer for viem with enterprise-grade security. Sign transactions and messages using keys stored in AWS or GCP KMS without exposing private keys.

Library for encoding ECDSA private keys to PEM, DER and raw hex formats