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CPGB is the Curve Privacy Guard B, a secure replacement for GPG using ECC.
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cpgb is a project to create a replacement for gpg that use Elliptic Curve Cryptography. cpgb aims to be secure, fast, and usable for many purposes. The cryptographic components are from the NaCL project, http://nacl.cr.yp.to. Currently CPGP compiles a few programs: keygen, encrypt, decrypt, sign, verify, sign-detached, verify-detached, hex, unhex, lookup. keygen -s spub spriv -creates a signing key, putting the public part in spub and the private part in spriv keygen -e pub priv -creates an encryption key, putting the public part in pub and the private part in priv. encrypt pub priv file -outputs an ecrypted form of file to standard output, with pub the public key of the recipient and priv the private key of the recipiant. decrypt pub priv file -outputs a decrypted form of file to standard output and exits normally if file is encrypted with the private key corresponding to pub, and the public key corresponding to priv sign spriv file -outputs a signed form of file on standard output verify spub file -if file was signed with the private key corresponding to spub then the original file is output to standard output. sign-detached spriv file -outputs a short signature for file verify-detached spub file sig -prints "Verify Succeeded!" to standard output if sig is a short signature generated by sign-detached for file, with the private key corresponding to spub. If sig is not a short signautre, prints "Verification Failed" and exits with nonzero status. encrypt-passphrase in out Prompts for a user provided passphrase then encrypts in and places the result in out. decryp-passphrase in out Prompts for a passphrase, decrypts in with it, places result in out. If in was not encrypted with that passphrase nothing happens. The key derivation function is iterated sha512. This is not a terribly good design, and at some point I will implement ROMIX or rip it from scrypt. hex hex takes its standard input and converts it to hex unhex unhex reverses what hex did. lookup file key value Lookup examines a list of a-lists in Lips format in file and prints out all with (key . "value"). Chicken is required to compile it. Adding to file is easy with a text editor.