Standard library

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Published: Sep 1, 2026 License: BSD-3-Clause

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Path Synopsis
archive
tar
Package tar implements access to tar archives.
Package tar implements access to tar archives.
zip
Package zip provides support for reading and writing ZIP archives.
Package zip provides support for reading and writing ZIP archives.
Package bufio implements buffered I/O. It wraps an io.Reader or io.Writer object, creating another object (Reader or Writer) that also implements the interface but provides buffering and some help for textual I/O.
Package bufio implements buffered I/O. It wraps an io.Reader or io.Writer object, creating another object (Reader or Writer) that also implements the interface but provides buffering and some help for textual I/O.
Package builtin provides documentation for Go's predeclared identifiers.
Package builtin provides documentation for Go's predeclared identifiers.
Package bytes implements functions for the manipulation of byte slices.
Package bytes implements functions for the manipulation of byte slices.
Package cmp provides types and functions related to comparing ordered values.
Package cmp provides types and functions related to comparing ordered values.
compress
bzip2
Package bzip2 implements bzip2 decompression.
Package bzip2 implements bzip2 decompression.
flate
Package flate implements the DEFLATE compressed data format, described in RFC 1951.
Package flate implements the DEFLATE compressed data format, described in RFC 1951.
gzip
Package gzip implements reading and writing of gzip format compressed files, as specified in RFC 1952.
Package gzip implements reading and writing of gzip format compressed files, as specified in RFC 1952.
lzw
Package lzw implements the Lempel-Ziv-Welch compressed data format, described in T. A. Welch, “A Technique for High-Performance Data Compression”, Computer, 17(6) (June 1984), pp 8-19.
Package lzw implements the Lempel-Ziv-Welch compressed data format, described in T. A. Welch, “A Technique for High-Performance Data Compression”, Computer, 17(6) (June 1984), pp 8-19.
zlib
Package zlib implements reading and writing of zlib format compressed data, as specified in RFC 1950.
Package zlib implements reading and writing of zlib format compressed data, as specified in RFC 1950.
container
heap
Package heap provides heap operations for any type that implements heap.Interface.
Package heap provides heap operations for any type that implements heap.Interface.
list
Package list implements a doubly linked list.
Package list implements a doubly linked list.
ring
Package ring implements operations on circular lists.
Package ring implements operations on circular lists.
Package context defines the Context type, which carries deadlines, cancellation signals, and other request-scoped values across API boundaries and between processes.
Package context defines the Context type, which carries deadlines, cancellation signals, and other request-scoped values across API boundaries and between processes.
Package crypto collects common cryptographic constants.
Package crypto collects common cryptographic constants.
aes
Package aes implements AES encryption (formerly Rijndael), as defined in U.S. Federal Information Processing Standards Publication 197.
Package aes implements AES encryption (formerly Rijndael), as defined in U.S. Federal Information Processing Standards Publication 197.
cipher
Package cipher implements standard block cipher modes that can be wrapped around low-level block cipher implementations.
Package cipher implements standard block cipher modes that can be wrapped around low-level block cipher implementations.
des
Package des implements the Data Encryption Standard (DES) and the Triple Data Encryption Algorithm (TDEA) as defined in U.S. Federal Information Processing Standards Publication 46-3.
Package des implements the Data Encryption Standard (DES) and the Triple Data Encryption Algorithm (TDEA) as defined in U.S. Federal Information Processing Standards Publication 46-3.
dsa
Package dsa implements the Digital Signature Algorithm, as defined in FIPS 186-3.
Package dsa implements the Digital Signature Algorithm, as defined in FIPS 186-3.
ecdh
Package ecdh implements Elliptic Curve Diffie-Hellman over NIST curves and Curve25519.
Package ecdh implements Elliptic Curve Diffie-Hellman over NIST curves and Curve25519.
ecdsa
Package ecdsa implements the Elliptic Curve Digital Signature Algorithm, as defined in [FIPS 186-5].
Package ecdsa implements the Elliptic Curve Digital Signature Algorithm, as defined in [FIPS 186-5].
ed25519
Package ed25519 implements the Ed25519 signature algorithm.
Package ed25519 implements the Ed25519 signature algorithm.
elliptic
Package elliptic implements the standard NIST P-224, P-256, P-384, and P-521 elliptic curves over prime fields.
Package elliptic implements the standard NIST P-224, P-256, P-384, and P-521 elliptic curves over prime fields.
fips140
Package fips140 provides information about the FIPS 140-3 Go Cryptographic Module and FIPS 140-3 mode.
Package fips140 provides information about the FIPS 140-3 Go Cryptographic Module and FIPS 140-3 mode.
hkdf
Package hkdf implements the HMAC-based Extract-and-Expand Key Derivation Function (HKDF) as defined in RFC 5869.
Package hkdf implements the HMAC-based Extract-and-Expand Key Derivation Function (HKDF) as defined in RFC 5869.
hmac
Package hmac implements the Keyed-Hash Message Authentication Code (HMAC) as defined in U.S. Federal Information Processing Standards Publication 198.
Package hmac implements the Keyed-Hash Message Authentication Code (HMAC) as defined in U.S. Federal Information Processing Standards Publication 198.
hpke
Package hpke implements Hybrid Public Key Encryption (HPKE) as defined in [RFC 9180].
Package hpke implements Hybrid Public Key Encryption (HPKE) as defined in [RFC 9180].
internal/boring
Package boring provides access to BoringCrypto implementation functions.
Package boring provides access to BoringCrypto implementation functions.
internal/boring/bcache
Package bcache implements a GC-friendly cache (see Cache) for BoringCrypto.
Package bcache implements a GC-friendly cache (see Cache) for BoringCrypto.
internal/boring/sig
Package sig holds “code signatures” that can be called and will result in certain code sequences being linked into the final binary.
Package sig holds “code signatures” that can be called and will result in certain code sequences being linked into the final binary.
internal/cryptotest/wycheproof
Package wycheproof provides helper utilities for writing tests that rely on Wycheproof test vector schemas and JSON vector data.
Package wycheproof provides helper utilities for writing tests that rely on Wycheproof test vector schemas and JSON vector data.
internal/entropy
Package entropy provides the passive entropy source for the FIPS 140-3 module.
Package entropy provides the passive entropy source for the FIPS 140-3 module.
internal/entropy/v1.0.0
Package entropy implements a CPU jitter-based SP 800-90B entropy source.
Package entropy implements a CPU jitter-based SP 800-90B entropy source.
internal/fips140/alias
Package alias implements memory aliasing tests.
Package alias implements memory aliasing tests.
internal/fips140/check
Package check implements the FIPS 140 load-time code+data verification.
Package check implements the FIPS 140 load-time code+data verification.
internal/fips140/check/checktest
Package checktest defines some code and data for use in the crypto/internal/fips140/check test.
Package checktest defines some code and data for use in the crypto/internal/fips140/check test.
internal/fips140/drbg
Package drbg provides cryptographically secure random bytes usable by FIPS code.
Package drbg provides cryptographically secure random bytes usable by FIPS code.
internal/fips140/edwards25519
Package edwards25519 implements group logic for the twisted Edwards curve
Package edwards25519 implements group logic for the twisted Edwards curve
internal/fips140/edwards25519/field
Package field implements fast arithmetic modulo 2^255-19.
Package field implements fast arithmetic modulo 2^255-19.
internal/fips140/hmac
Package hmac implements HMAC according to [FIPS 198-1].
Package hmac implements HMAC according to [FIPS 198-1].
internal/fips140/mlkem
Package mlkem implements the quantum-resistant key encapsulation method ML-KEM (formerly known as Kyber), as specified in [NIST FIPS 203].
Package mlkem implements the quantum-resistant key encapsulation method ML-KEM (formerly known as Kyber), as specified in [NIST FIPS 203].
internal/fips140/nistec
Package nistec implements the elliptic curves from NIST SP 800-186.
Package nistec implements the elliptic curves from NIST SP 800-186.
internal/fips140/sha256
Package sha256 implements the SHA-224 and SHA-256 hash algorithms as defined in FIPS 180-4.
Package sha256 implements the SHA-224 and SHA-256 hash algorithms as defined in FIPS 180-4.
internal/fips140/sha3
Package sha3 implements the SHA-3 fixed-output-length hash functions and the SHAKE variable-output-length functions defined by [FIPS 202], as well as the cSHAKE extendable-output-length functions defined by [SP 800-185].
Package sha3 implements the SHA-3 fixed-output-length hash functions and the SHAKE variable-output-length functions defined by [FIPS 202], as well as the cSHAKE extendable-output-length functions defined by [SP 800-185].
internal/fips140/sha512
Package sha512 implements the SHA-384, SHA-512, SHA-512/224, and SHA-512/256 hash algorithms as defined in FIPS 180-4.
Package sha512 implements the SHA-384, SHA-512, SHA-512/224, and SHA-512/256 hash algorithms as defined in FIPS 180-4.
internal/fips140/ssh
Package ssh implements the SSH KDF as specified in RFC 4253, Section 7.2 and allowed by SP 800-135 Revision 1.
Package ssh implements the SSH KDF as specified in RFC 4253, Section 7.2 and allowed by SP 800-135 Revision 1.
internal/fips140/tls13
Package tls13 implements the TLS 1.3 Key Schedule as specified in RFC 8446, Section 7.1 and allowed by FIPS 140-3 IG 2.4.B Resolution 7.
Package tls13 implements the TLS 1.3 Key Schedule as specified in RFC 8446, Section 7.1 and allowed by FIPS 140-3 IG 2.4.B Resolution 7.
internal/fips140cache
Package fips140cache provides a weak map that associates the lifetime of values with the lifetime of keys.
Package fips140cache provides a weak map that associates the lifetime of values with the lifetime of keys.
internal/fips140deps
Package fipsdeps contains wrapper packages for internal APIs that are exposed to the FIPS module.
Package fipsdeps contains wrapper packages for internal APIs that are exposed to the FIPS module.
internal/impl
Package impl is a registry of alternative implementations of cryptographic primitives, to allow selecting them for testing.
Package impl is a registry of alternative implementations of cryptographic primitives, to allow selecting them for testing.