jage - age in JS

age-encryption.org tool implementation in JavaScript.

This is a modern replacement for GPG.

Spec

See the latest spec at https://gist.github.com/paulmillr/9c80bb176ee039272ab5c915d3c73afc.

tl;dr:

• encode(data) is canonical base64 from RFC 4648 without padding.
• encrypt[key](plaintext) is ChaCha20-Poly1305 from RFC 7539 with a zero nonce.
• X25519(secret, point) is from RFC 7748, including the all-zeroes output check.
• HKDF[salt, label](key) is 32 bytes of HKDF from RFC 5869 with SHA-256.
• HMAC[key](message) is HMAC from RFC 2104 with SHA-256.
• scrypt[salt, N](password) is 32 bytes of scrypt from RFC 7914 with r = 8 and P = 1 .
• RSAES-OAEP[key, label](plaintext) is from RFC 8017 with SHA-256 and MGF1.
• random(n) is a string of n bytes read from a CSPRNG like /dev/urandom.

Usage

$ age-keygen > key.txt

$ cat key.txt
## created: 2006-01-02T15:04:05Z07:00
## public key: age1mrmfnwhtlprn4jquex0ukmwcm7y2nxlphuzgsgv8ew2k9mewy3rs8u7su5
AGE-SECRET-KEY-1EKYFFCK627939WTZMTT4ZRS2PM3U2K7PZ3MVGEL2M76W3PYJMSHQMTT6SS

$ echo "_o/" | age -r age1mrmfnwhtlprn4jquex0ukmwcm7y2nxlphuzgsgv8ew2k9mewy3rs8u7su5 -o hello.age

$ age -decrypt -i key.txt hello.age
_o/

$ tar cv ~/xxx | age -r github:Benjojo -r github:FiloSottile | nc 192.0.2.0 1234

License

MIT License, see LICENSE file.