x/

Package acme provides an implementation of the Automatic Certificate Management Environment (ACME) spec.

Package autocert provides automatic access to certificates from Let's Encrypt and any other ACME-based CA.

Package bcrypt implements Provos and Mazières's bcrypt adaptive hashing algorithm.

Package blake2b implements the BLAKE2b hash algorithm as defined in RFC 7693.

Package blake2s implements the BLAKE2s hash algorithm as defined in RFC 7693.

Package blowfish implements Bruce Schneier's Blowfish encryption algorithm.

Package bn256 implements a particular bilinear group at the 128-bit security level.

Package cast5 implements CAST5, as defined in RFC 2144.

Package chacha20poly1305 implements the ChaCha20-Poly1305 AEAD as specified in RFC 7539.

Package cryptobyte implements building and parsing of byte strings for DER-encoded ASN.1 and TLS messages.

Package curve25519 provides an implementation of scalar multiplication on the elliptic curve known as curve25519.

Package ed25519 implements the Ed25519 signature algorithm.

Package hkdf implements the HMAC-based Extract-and-Expand Key Derivation Function (HKDF) as defined in RFC 5869.

Package md4 implements the MD4 hash algorithm as defined in RFC 1320.

Package box authenticates and encrypts messages using public-key cryptography.

Package secretbox encrypts and authenticates small messages.

Package ocsp parses OCSP responses as specified in RFC 2560.

Package openpgp implements high level operations on OpenPGP messages.

Package armor implements OpenPGP ASCII Armor, see RFC 4880.

Package clearsign generates and processes OpenPGP, clear-signed data.

Package elgamal implements ElGamal encryption, suitable for OpenPGP, as specified in "A Public-Key Cryptosystem and a Signature Scheme Based on Discrete Logarithms," IEEE Transactions on Information Theory, v.

Package errors contains common error types for the OpenPGP packages.

Package packet implements parsing and serialization of OpenPGP packets, as specified in RFC 4880.

Package s2k implements the various OpenPGP string-to-key transforms as specified in RFC 4800 section 3.7.1.

Package otr implements the Off The Record protocol as specified in http://www.cypherpunks.ca/otr/Protocol-v2-3.1.0.html

Package pbkdf2 implements the key derivation function PBKDF2 as defined in RFC 2898 / PKCS #5 v2.0.

Package pkcs12 implements some of PKCS#12.

Package poly1305 implements Poly1305 one-time message authentication code as specified in http://cr.yp.to/mac/poly1305-20050329.pdf.

Package ripemd160 implements the RIPEMD-160 hash algorithm.

Package salsa20 implements the Salsa20 stream cipher as specified in http://cr.yp.to/snuffle/spec.pdf.

Package salsa provides low-level access to functions in the Salsa family.

Package scrypt implements the scrypt key derivation function as defined in Colin Percival's paper "Stronger Key Derivation via Sequential Memory-Hard Functions" (http://www.tarsnap.com/scrypt/scrypt.pdf).

Package sha3 implements the SHA-3 fixed-output-length hash functions and the SHAKE variable-output-length hash functions defined by FIPS-202.

Package ssh implements an SSH client and server.

Package agent implements the ssh-agent protocol, and provides both a client and a server.

Package terminal provides support functions for dealing with terminals, as commonly found on UNIX systems.

This package contains integration tests for the golang.org/x/crypto/ssh package.

Package twofish implements Bruce Schneier's Twofish encryption algorithm.

Package xtea implements XTEA encryption, as defined in Needham and Wheeler's 1997 technical report, "Tea extensions."

Package xts implements the XTS cipher mode as specified in IEEE P1619/D16.

Package bpf implements marshaling and unmarshaling of programs for the Berkeley Packet Filter virtual machine, and provides a Go implementation of the virtual machine.

Package context defines the Context type, which carries deadlines, cancelation signals, and other request-scoped values across API boundaries and between processes.

Package ctxhttp provides helper functions for performing context-aware HTTP requests.

Package dict implements the Dictionary Server Protocol as defined in RFC 2229.

Package dnsmessage provides a mostly RFC 1035 compliant implementation of DNS message packing and unpacking.

Package html implements an HTML5-compliant tokenizer and parser.

Package atom provides integer codes (also known as atoms) for a fixed set of frequently occurring HTML strings: tag names and attribute keys such as "p" and "id".

Package charset provides common text encodings for HTML documents.

Package http2 implements the HTTP/2 protocol.

The h2i command is an interactive HTTP/2 console.

Package hpack implements HPACK, a compression format for efficiently representing HTTP header fields in the context of HTTP/2.

Package icmp provides basic functions for the manipulation of messages used in the Internet Control Message Protocols, ICMPv4 and ICMPv6.

Package idna implements IDNA2008 using the compatibility processing defined by UTS (Unicode Technical Standard) #46, which defines a standard to deal with the transition from IDNA2003.

Package ipv4 implements IP-level socket options for the Internet Protocol version 4.

Package ipv6 implements IP-level socket options for the Internet Protocol version 6.

Package httplex contains rules around lexical matters of various HTTP-related specifications.

Package nettest provides utilities for network testing.

Package netutil provides network utility functions, complementing the more common ones in the net package.

Package proxy provides support for a variety of protocols to proxy network data.

Package publicsuffix provides a public suffix list based on data from http://publicsuffix.org/.

Package route provides basic functions for the manipulation of packet routing facilities on BSD variants.

Package trace implements tracing of requests and long-lived objects.

Package webdav provides a WebDAV server implementation.

Package websocket implements a client and server for the WebSocket protocol as specified in RFC 6455.

Package xsrftoken provides methods for generating and validating secure XSRF tokens.

Package unix contains an interface to the low-level operating system primitives.

Package svc provides everything required to build Windows service.

Package debug provides facilities to execute svc.Handler on console.

Package eventlog implements access to Windows event log.

Example service program that beeps.

Package mgr can be used to manage Windows service programs.

Package parse provides support for parsing benchmark results as generated by 'go test -bench'.

Package blog implements a web server for articles written in present format.

Package atom defines XML data structures for an Atom feed.

The benchcmp command displays performance changes between benchmarks.

Bundle creates a single-source-file version of a source package suitable for inclusion in a particular target package.

callgraph: a tool for reporting the call graph of a Go program.

Compilebench benchmarks the speed of the Go compiler.

Cover is a program for analyzing the coverage profiles generated by 'go test -coverprofile=cover.out'.

The digraph command performs queries over unlabelled directed graphs represented in text form.

The eg command performs example-based refactoring.

The fiximports command fixes import declarations to use the canonical import path for packages that have an "import comment" as defined by https://golang.org/s/go14customimport.

The getgo command installs Go to the user's system.

Command server serves get.golang.org, redirecting users to the appropriate getgo installer based on the request path.

The go-contrib-init command helps new Go contributors get their development environment set up for the Go contribution process.

The godex command prints (dumps) exported information of packages or selected package objects.

Godoc extracts and generates documentation for Go programs.

Command goimports updates your Go import lines, adding missing ones and removing unreferenced ones.

The gomvpkg command moves go packages, updating import declarations.

The gorename command performs precise type-safe renaming of identifiers in Go source code.

The gotype command, like the front-end of a Go compiler, parses and type-checks a single Go package.

Goyacc is a version of yacc for Go.

guru: a tool for answering questions about Go source code.

Package serial defines the guru's schema for -json output.

heapview is a tool for viewing Go heap dumps.

This program takes an HTML file and outputs a corresponding article file in present format.

Present displays slide presentations and articles.

ssadump: a tool for displaying and interpreting the SSA form of Go programs.

The stress utility is intended for catching sporadic failures.

Stringer is a tool to automate the creation of methods that satisfy the fmt.Stringer interface.

Command tip is the tip.golang.org server, serving the latest HEAD straight from the Git oven.

Toolstash provides a way to save, run, and restore a known good copy of the Go toolchain and to compare the object files generated by two toolchains.

Package intsets provides Sparse, a compact and fast representation for sparse sets of int values.

Package cover provides support for parsing coverage profiles generated by "go test -coverprofile=cover.out".

Package astutil contains common utilities for working with the Go AST.

Package buildutil provides utilities related to the go/build package in the standard library.

Package callgraph defines the call graph and various algorithms and utilities to operate on it.

Package cha computes the call graph of a Go program using the Class Hierarchy Analysis (CHA) algorithm.

This package provides Rapid Type Analysis (RTA) for Go, a fast algorithm for call graph construction and discovery of reachable code (and hence dead code) and runtime types.

Package static computes the call graph of a Go program containing only static call edges.

Package gccgoexportdata provides functions for reading export data files containing type information produced by the gccgo compiler.

Package gcexportdata provides functions for locating, reading, and writing export data files containing type information produced by the gc compiler.

Package loader loads a complete Go program from source code, parsing and type-checking the initial packages plus their transitive closure of dependencies.

Package pointer implements Andersen's analysis, an inclusion-based pointer analysis algorithm first described in (Andersen, 1994).

Package ssa defines a representation of the elements of Go programs (packages, types, functions, variables and constants) using a static single-assignment (SSA) form intermediate representation (IR) for the bodies of functions.

Package ssa/interp defines an interpreter for the SSA representation of Go programs.

Package typeutil defines various utilities for types, such as Map, a mapping from types.Type to interface{} values.

Package vcs exposes functions for resolving import paths and using version control systems, which can be used to implement behavior similar to the standard "go get" command.

Package godoc is a work-in-progress (2013-07-17) package to begin splitting up the godoc binary into multiple pieces.

Package analysis performs type and pointer analysis and generates mark-up for the Go source view.

Package redirect provides hooks to register HTTP handlers that redirect old godoc paths to their new equivalents and assist in accessing the issue tracker, wiki, code review system, etc.

Package static exports a map of static file content that supports the godoc user interface.

Package util contains utility types and functions for godoc.

Package vfs defines types for abstract file system access and provides an implementation accessing the file system of the underlying OS.

Package gatefs provides an implementation of the FileSystem interface that wraps another FileSystem and limits its concurrency.

Package httpfs implements http.FileSystem using a godoc vfs.FileSystem.

Package mapfs file provides an implementation of the FileSystem interface based on the contents of a map[string]string.

Package zipfs file provides an implementation of the FileSystem interface based on the contents of a .zip file.

Package imports implements a Go pretty-printer (like package "go/format") that also adds or removes import statements as necessary.

Package playground registers HTTP handlers at "/compile" and "/share" that proxy requests to the golang.org playground service.

Package socket implements an WebSocket-based playground backend.

The present file format Present files have the following format.

Package eg implements the example-based refactoring tool whose command-line is defined in golang.org/x/tools/cmd/eg.

Package importgraph computes the forward and reverse import dependency graphs for all packages in a Go workspace.

Package rename contains the implementation of the 'gorename' command whose main function is in golang.org/x/tools/cmd/gorename.

Package satisfy inspects the type-checked ASTs of Go packages and reports the set of discovered type constraints of the form (lhs, rhs Type) where lhs is a non-trivial interface, rhs satisfies this interface, and this fact is necessary for the package to be well-typed.