A pure JavaScript implementation of the W3C WebCrypto API for cryptographic operations in browsers.
PolyCrypt is a pure JavaScript implementation of the W3C WebCrypto API that provides cryptographic functionality for web applications. It solves the problem of inconsistent or missing native WebCrypto support across different browsers by offering a standardized, portable alternative.
Web developers and application builders who need reliable cryptographic operations (like encryption, signing, or key generation) in browsers with varying levels of native WebCrypto support.
Developers choose PolyCrypt because it ensures consistent cryptographic behavior across all major browsers, eliminates dependency on native implementations, and adheres strictly to the W3C WebCrypto standard for interoperability.
PolyCrypt - A pure JS implementation of the WebCrypto API
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Implements the WebCrypto API entirely in JavaScript with no native dependencies, making it highly portable and easy to integrate into any JS environment, as per the key features.
Adheres strictly to the W3C WebCrypto standard, ensuring interoperability with existing codebases and reducing vendor lock-in, highlighted in the philosophy.
Successfully tested across major browsers including Chrome, Firefox, Safari, and IE on desktop and mobile, providing consistent behavior where native support varies, as noted in the README.
Includes built-in tools like webservers.sh for setting up local test servers, facilitating controlled environment testing as described in the quick start guide.
Has known issues in Safari Private Browsing Mode, Firefox with cookie settings to 'Ask me', and with NoScript, as admitted in the README, limiting reliability in privacy-focused setups.
Requires editing system files (e.g., /etc/hosts) and running shell scripts, which can be cumbersome and error-prone for quick integration or automated deployments.
Being a pure JS implementation, it may have slower performance compared to native WebCrypto, especially for intensive operations like encryption or signing.
Cannot be used from local pages on disk due to postMessage requirements, restricting offline or file-based testing without a server, as noted in the known issues.