[ALX] 2016-08-19 17:05:00: See http://sourceforge.net/projects/tclsnippets/files/nacl/ for releases, source, ... <
> This package is licensed unter BSD-3. The package has [TEA] Tcl Extension Architecture and has been tested under AIX, Linux, Mac OS X and Windows XP - 7. ---- [AMG]: "NaCl" also refers to Google Chrome's Native Client sandbox. See [NaTcl]. NaCl is an unfortunate choice of name, it conflicts with Google's "Native Client" (NaCl) library https://www.chromium.org/nativeclient which could well use a Tcl interface to enable full standard Tcl to run "native" within a browser at normal compiled speeds, and as such, we might prefer to rename this newer piece of software since Native Client has been around a while and probably has prior claim. [Larry Smith] ---- ** NAME ** nacl - tcl package for Networking and Cryptography library (pronounced "salt") ** SYNOPSIS ** : nacl::info : nacl::rcsid : nacl::randombytes names : nacl::randombytes source ?random|urandom|secrandomcopybytes|cryptgenrandom|default? : nacl::randombytes lengthValue : nacl::randombytes box ?-nonce? : nacl::randombytes scalarmult ?-scalar|-group? : nacl::randombytes secretbox ?-nonce|-key? : nacl::randombytes stream ?-nonce|-key? : nacl::randombytes auth ?-key? : nacl::randombytes onetimeauth ?-key? Public-key cryptography : nacl::box info : nacl::box keypair publicKeyVariable secretKeyVariable : nacl::box cipherVariable messageValue nonceValue publicKeyValue secretKeyValue : nacl::box open messageVariable cipherValue nonceValue publicKeyValue secretKeyValue : nacl::scalarmult info : nacl::scalarmult resultVariable scalarValue groupValue : nacl::scalarmult base resultVariable scalarValue : nacl::sign info : nacl::sign keypair publicKeyVariable secretKeyVariable : nacl::sign signedVariable messageValue secretKeyValue : nacl::sign verify messageVariable signedValue publicKeyValue Secret-key cryptography : nacl::secretbox info : nacl::secretbox cipherVariable messageValue nonceValue keyValue : nacl::secretbox open messageVariable cipherValue nonceValue keyValue : nacl::stream info : nacl::stream generate cipherVariable nonceValue keyValue : nacl::stream cipherVariable messageValue nonceValue keyValue : nacl::auth info : nacl::auth ?-hmac256|-hmac512256? authVariable messageValue keyValue : nacl::auth verify -hmac256|-hmac512256 authValue messageValue keyValue : nacl::onetimeauth info : nacl::onetimeauth authVariable messageValue keyValue : nacl::onetimeauth verify authValue messageValue keyValue Low-level functions : nacl::hash info : nacl::hash ?-sha256|-sha512? hashVariable messageValue ** DESCRIPTION ** NaCl (pronounced "salt") is a new easy-to-use high-speed software library for network communication, encryption, decryption, signatures, etc. NaCl's goal is to provide all of the core operations needed to build higher-level cryptographic tools. Of course, other libraries already exist for these core operations. NaCl advances the state of the art by improving security, by improving usability, and by improving speed. ** Key features ** No data flow from secrets to load addresses. No data flow from secrets to branch conditions. No padding oracles. Centralizing randomness. Avoiding unnecessary randomness. Extremely high speed. ** Functions supported ** Simple NaCl applications need only six high-level NaCl functions: crypto_box for public-key authenticated encryption; crypto_box_open for verification and decryption; crypto_box_keypair to create a public key in the first place; and similarly for signatures crypto_sign, crypto_sign_open, and crypto_sign_keypair. A minimalist implementation of the NaCl API would provide just these six functions. TweetNaCl is more ambitious, supporting all 25 of the NaCl functions listed below, which as mentioned earlier are all of the C NaCl functions used by applications. This list includes all of NaCl's "default" primitives except for crypto_auth_hmacsha512256, which was included in NaCl only for compatibility with standards and is superseded by crypto_onetimeauth. The Ed25519 signature system has not yet been integrated into NaCl, since the Ed25519 software has not yet been fully audited; NaCl currently provides an older signature system. However, NaCl has announced that it will transition to Ed25519, so TweetNaCl provides Ed25519. '''Public-key cryptography''' * Authenticated encryption using Curve25519, Salsa20, and Poly1305 ** crypto_box = crypto_box_curve25519xsalsa20poly1305 ** crypto_scalarmult = crypto_scalarmult_curve25519 * Signatures using Ed25519 ** crypto_sign = crypto_sign_ed25519 '''Secret-key cryptography''' * Authenticated encryption using Salsa20 and Poly1305 ** crypto_secretbox = crypto_secretbox_xsalsa20poly1305 * Encryption using Salsa20 ** crypto_stream = crypto_stream_xsalsa20 * Authentication using HMAC-SHA-512-256 ** crypto_auth_hmacsha256_ref, crypto_auth_hmacsha512256_ref * One-time authentication using Poly1305 ** crypto_onetimeauth = crypto_onetimeauth_poly1305 '''Low-level functions''' * Hashing using SHA-512 or SHA-256 ** crypto_hash_sha256_ref, crypto_hash = crypto_hash_sha512 ** EXAMPLES ** Public-key cryptography authenticated encryption using '''nacl::box''' ======tcl nacl::box keypair pub1 sec1 nacl::box keypair pub2 sec2 set nonce [nacl::randombytes box -nonce] set message {My Secret Message} if {[nacl::box encrypted $message $nonce $pub2 $sec1] == 0} { if {[nacl::box open decrypted $encrypted $nonce $pub1 $sec2] == 0} { puts "message decrypted = '$decrypted'" } } ====== Public-key cryptography signatures using '''nacl::sign''' ======tcl nach::sign keypair pub sec set message {My Message} if {[nacl::sign encrypted $message $sec] == 0} { if {[nacl::sign verify decrypted $encrypted $pub] == 0} { puts "signed message decrypted = '$decrypted'" } } ====== Secret-key cryptography authenticated encryption using '''nacl::secretbox''' ======tcl set key [nacl::randombytes secretbox -key] set nonce [nacl::randombytes secretbox -nonce] set message {My Secret Message} if {[nacl::secretbox encrypted $message $nonce $key] == 0} { if {[nacl::secretbox open decrypted $encrypted $nonce $key] == 0} { puts "message decrypted = '$decrypted'" } } ====== Secret-key cryptography encryption using '''nacl::stream''' ======tcl set key [nacl::randombytes stream -key] set nonce [nacl::randombytes stream -nonce] set message {My Secret Message} if {[nacl::stream encrypted $message $nonce $key] == 0} { if {[nacl::stream decrypted $encrypted $nonce $key] == 0} { puts "message decrypted = '$decrypted'" } } ====== Secret-key cryptography authentication using '''nacl::auth''' ======tcl set key [nacl::randombytes auth -key] set message {My Message} if {[nacl::auth -hmac512256 auth $message $key] == 0} { if {[nacl::auth verify -hmac512256 $auth $message $key] == 0} { puts {authentication OK} } } ====== Secret-key cryptography one-time authentication using '''nacl::onetimeauth''' ======tcl set key [nacl::randombytes onetimeauth -key] set message {My Message} if {[nacl::onetimeauth auth $message $key] == 0} { if {[nacl: onetimeauth verify $auth $message $key] == 0} { puts {one-time authentication OK} } } ====== Hashing using '''nacl::hash''' ======tcl if {[nacl::hash -sha256 hash {NaCl does SHA256}] == 0} { } ====== or ======tcl if {[nacl::hash -sha512 hash {NaCl does SHA512}] == 0} { } ====== ** SEE ALSO ** https://nacl.cr.yp.to 20110221 <
> https://tweetnacl.cr.yp.to 20140427 ** LEGAL NOTICE ** Copyright (C) 2016 Alexander Schoepe NaCl and TweetNaCl crypto library are public domain and the Tcl package BSD-3 license Contributors (alphabetical order) <
> Daniel J. Bernstein, University of Illinois at Chicago and Technische Universiteit Eindhoven <
> Bernard van Gastel, Radboud Universiteit Nijmegen <
> Wesley Janssen, Radboud Universiteit Nijmegen <
> Tanja Lange, Technische Universiteit Eindhoven <
> Peter Schwabe, Radboud Universiteit Nijmegen <
> Sjaak Smetsers, Radboud Universiteit Nijmegen <> Category Command | Tcl syntax | Arts and Crafts of Tcl-tk Programming | Security | Cryptography