Ecosyste.ms: Packages

An open API service providing package, version and dependency metadata of many open source software ecosystems and registries.

proxy.golang.org "serialization" keyword

Top 8.0% on proxy.golang.org
github.com/peterrk/protocache-go
Alternative flat binary format for Protobuf schema
Latest release: 15 days ago - 0 stars on GitHub
github.com/ichiban/tnetstrings v0.0.0-20180422064249-a801545262c5
Go TNetStrings encoder/decoder
1 version - Latest release: about 6 years ago - 1 dependent repositories - 0 stars on GitHub
Top 9.0% on proxy.golang.org
github.com/j0nimost/jstra v0.0.0-20210914193628-3a38ba7aa9cc
A JSON serializer for go turns Structs to Json
1 version - Latest release: over 2 years ago - 0 stars on GitHub
Top 8.2% on proxy.golang.org
github.com/foxcapades/gojasc v1.1.0
JSON Safe Binary Serialization
3 versions - Latest release: over 3 years ago - 0 stars on GitHub
Top 8.2% on proxy.golang.org
github.com/Foxcapades/gojasc v1.1.0
JSON Safe Binary Serialization
3 versions - Latest release: over 3 years ago - 0 stars on GitHub
github.com/RobertGumpert/gopherpc v1.0.2
A simple library written in GO, which provides functionality for serialization and deserializatio...
3 versions - Latest release: almost 3 years ago - 1 dependent repositories - 0 stars on GitHub
Top 8.2% on proxy.golang.org
github.com/arivum/msgpack v0.1.1
high-throughput msgpack decoding
2 versions - Latest release: about 2 years ago - 0 stars on GitHub
Top 8.2% on proxy.golang.org
github.com/chasingcarrots/goschema v0.0.0-20180727160733-c43217db3e43
Binary serialization library for Golang
1 version - Latest release: almost 6 years ago - 0 stars on GitHub
Top 8.2% on proxy.golang.org
github.com/bilebucket/zgob v0.0.0-20200701150818-b02d78396af5
zgob is a tiny utility library for saving and loading gobs with zlib compression
1 version - Latest release: almost 4 years ago - 0 stars on GitHub
Top 8.2% on proxy.golang.org
github.com/likebike/jsonface v0.0.0-20190925103621-95d932941095
Package jsonface enables JSON Unmarshalling into Go Interfaces. This enables you to isolate your ...
1 version - Latest release: over 4 years ago - 0 stars on GitHub
Top 9.2% on proxy.golang.org
github.com/deveox/blaze v0.12.0 💰
Advanced JSON serializer and deserializer
58 versions - Latest release: 22 days ago - 0 stars on GitHub
Top 8.2% on proxy.golang.org
github.com/arivum/json2msgpackstreamer v0.1.1
JSON to msgpack stream converter
2 versions - Latest release: about 2 years ago - 0 stars on GitHub
Top 8.2% on proxy.golang.org
github.com/ybkimm/msgpack v0.3.0
msgpack.org[Go] Another msgpack library.
3 versions - Latest release: over 4 years ago - 0 stars on GitHub
github.com/Frixuu/KDLGo v0.2.0
KDL parser in Go.
2 versions - Latest release: 9 months ago - 0 stars on GitHub
Top 8.2% on proxy.golang.org
github.com/felixseptem/itsrisky v0.1.0
a data signatrue library powered by hmac
1 version - Latest release: over 5 years ago - 0 stars on GitHub
Top 9.0% on proxy.golang.org
github.com/the-go-tool/object
⚙️ Tool to work through unspecified scheme objects (json, yaml, etc.)
Latest release: 25 days ago - 0 stars on GitHub
Top 8.2% on proxy.golang.org
github.com/unqnown/iof v0.0.0-20200510222829-53ef23cc6469
iof simplifies i/o operations with files of different data-serialization formats.
1 version - Latest release: about 4 years ago - 0 stars on GitHub
github.com/frixuu/kdlgo v0.2.0
KDL parser in Go.
2 versions - Latest release: 9 months ago - 1 dependent repositories - 0 stars on GitHub
github.com/amanofbits/simser v0.4.0
Simple serialization code generator for GO structs with unexported fields
4 versions - Latest release: 5 months ago - 0 stars on GitHub
github.com/vedranvuk/binaryex v0.1.1
Package binaryex implements functions supplement to binary/encoding package. It is designed for e...
2 versions - Latest release: almost 4 years ago - 1 dependent repositories - 0 stars on GitHub
github.com/superp00t/etc v0.9.2
Binary string serialization library with interface language
3 versions - Latest release: almost 3 years ago - 2 dependent packages - 1 dependent repositories - 0 stars on GitHub
github.com/markdingo/netstring v1.0.2
Package netstring provides robust encoding and decoding of netstrings to and from byte streams. ...
3 versions - Latest release: 8 months ago - 0 stars on GitHub
Top 8.2% on proxy.golang.org
github.com/ErikPelli/sbor v0.1.0
MessagePack - Serializer to Binary Object Representation
1 version - Latest release: about 2 years ago - 0 stars on GitHub
Top 9.0% on proxy.golang.org
github.com/xinslu/deser-go v0.0.0-20220715223024-f6c9f5b64620
Serialization and Deserialization Library for Golang inspired by serde-rs
1 version - Latest release: almost 2 years ago - 0 stars on GitHub
Top 7.0% on proxy.golang.org
github.com/arivum/json2msgpackStreamer v0.1.1
JSON to msgpack stream converter
2 versions - Latest release: about 2 years ago - 1 dependent package - 0 stars on GitHub
Top 9.9% on proxy.golang.org
github.com/tchajed/marshal v0.4.3
Marshaling library targeting Goose
8 versions - Latest release: over 1 year ago - 14 dependent packages - 9 dependent repositories - 0 stars on GitHub
Top 8.2% on proxy.golang.org
github.com/robertgumpert/gopherpc v1.0.2
A simple library written in GO, which provides functionality for serialization and deserializatio...
3 versions - Latest release: almost 3 years ago - 0 stars on GitHub
Top 8.2% on proxy.golang.org
github.com/FelixSeptem/itsrisky v0.1.0
Package itsrisky is a library to generate data signature powered by hmac and a hash algorithm(def...
1 version - Latest release: over 5 years ago - 0 stars on GitHub
Top 8.2% on proxy.golang.org
github.com/wwalexander/go-bencode v0.0.0-20171008101449-5ea4b9474af2
Package bencode implements encoding and decoding of bencoded values as defined in BEP 3. The mapp...
1 version - Latest release: over 6 years ago - 0 stars on GitHub
Top 8.2% on proxy.golang.org
github.com/teawithsand/reser v0.0.1
Tool for polymorphic serialization in golang
1 version - Latest release: about 3 years ago - 0 stars on GitHub
github.com/Frixuu/kdlgo v0.2.0
KDL parser in Go.
2 versions - Latest release: 9 months ago - 0 stars on GitHub
Top 8.2% on proxy.golang.org
github.com/fabgeyer/pbzlib-go v0.0.0-20200516132817-bd7b5c8fd7b5
Library for serializing protobuf objects - Go version
1 version - Latest release: about 4 years ago - 0 stars on GitHub
Top 8.2% on proxy.golang.org
github.com/erikpelli/sbor v0.1.0
MessagePack - Serializer to Binary Object Representation
1 version - Latest release: about 2 years ago - 0 stars on GitHub
github.com/dyrkin/bin v0.0.0-20220114193816-4d8131e15455
1 version - Latest release: over 2 years ago - 6 dependent packages - 4 dependent repositories - 0 stars on GitHub
github.com/mutalisk999/go-lib v0.0.0-20220929150048-854644840833
Simple Golang Framework
2 versions - Latest release: over 1 year ago - 1 dependent package - 1 dependent repositories - 1 stars on GitHub
Top 8.2% on proxy.golang.org
github.com/host6/dynobuffers v0.0.0-20190916194926-5e969ca545e4
Codegen-less wrapper for Google FlatBuffers with Get\Set by name
1 version - Latest release: over 4 years ago - 1 stars on GitHub
github.com/redis-go/redcon v0.2.0
Package redcon implements a Redis compatible server framework
1 version - Latest release: about 6 years ago - 1 dependent package - 3 dependent repositories - 1 stars on GitHub
Top 9.8% on proxy.golang.org
github.com/metrumresearchgroup/gogridengine v0.0.2
Serialization for Sun Grid Engine QStat XML Output
2 versions - Latest release: 5 months ago - 3 dependent packages - 3 dependent repositories - 1 stars on GitHub
Top 9.5% on proxy.golang.org
github.com/Gami13/wsv-golang v0.0.3
Simple WSV (Whitspace Separated Values) parser for Go
3 versions - Latest release: 4 months ago - 1 stars on GitHub
Top 8.2% on proxy.golang.org
github.com/theodesp/binpack v0.0.0-20190314082621-baff0251ade6
Package binpack is a library implementing encoding/binpack. Which is a binary serialize format, i...
1 version - Latest release: about 5 years ago - 1 stars on GitHub
Top 9.5% on proxy.golang.org
github.com/gami13/wsv-golang
Simple WSV (Whitspace Separated Values) parser for Go
Latest release: 22 days ago - 1 stars on GitHub
Top 8.2% on proxy.golang.org
github.com/qendolin/go-bmf v1.1.0
AngelCode BMF parsing and serialization in Go
3 versions - Latest release: almost 3 years ago - 1 stars on GitHub
Top 8.6% on proxy.golang.org
github.com/Itay2805/rawbin v0.0.0-20170728074252-c13886ee1d79
Rawbin is a go library for encoding and decoding raw binary data (mainly from structs)
1 version - Latest release: almost 7 years ago - 1 stars on GitHub
Top 8.6% on proxy.golang.org
github.com/itay2805/rawbin v0.0.0-20170728074252-c13886ee1d79
Rawbin is a go library for encoding and decoding raw binary data (mainly from structs)
1 version - Latest release: almost 7 years ago - 1 stars on GitHub
Top 9.7% on proxy.golang.org
github.com/localvoid/pck v0.0.0-20171109051719-95c98bab06e9
:package: pck is a binary format and a set of tools for generating serializers/deserializers
1 version - Latest release: over 6 years ago - 1 stars on GitHub
github.com/arichr/eabi v0.0.0-20231002051954-8942c980aa44
A lightweight alternative to MessagePack
2 versions - Latest release: 8 months ago - 1 stars on GitHub
Top 8.2% on proxy.golang.org
github.com/Raggaer/tfs_item_attributes_reader v0.0.0-20201118183736-736539e60dfa
Unserializes / Serializes TFS database item attributes
1 version - Latest release: over 3 years ago - 1 stars on GitHub
Top 8.2% on proxy.golang.org
github.com/Qendolin/go-bmf v1.1.0
Package bmf implements BMF .fnt file parsing and serialization. It supports only version 3 of the...
3 versions - Latest release: almost 3 years ago - 1 stars on GitHub
Top 9.0% on proxy.golang.org
github.com/frixuu/kdl v0.2.0
KDL parser in Go.
2 versions - Latest release: 9 months ago - 1 stars on GitHub
github.com/20yyq/parser v0.0.0-20230311071426-41982542a4e8
@@ @ Author : Eacher @ Date : 2023-03-07 09:53:53 @ LastEditTime : 2023-03-11 15:10...
1 version - Latest release: about 1 year ago - 1 stars on GitHub
Top 9.7% on proxy.golang.org
github.com/montag451/go-ojson v0.0.0-20240123091343-4619e73b2444
Package ojson provides several data types that can be used to encode and decode JSON while preser...
6 versions - Latest release: 4 months ago - 1 stars on GitHub
Top 8.2% on proxy.golang.org
github.com/hfern/go-mathematica v0.0.0-20160304074826-7682ea40bbd1
Provides an encoding interface for serializing Golang type structures into Mathematica data struc...
1 version - Latest release: about 8 years ago - 1 stars on GitHub
github.com/et-nik/binngo v0.2.4
Binary serialization. Implements easy to use encoding and decoding of Binn.
9 versions - Latest release: over 2 years ago - 1 dependent package - 2 dependent repositories - 2 stars on GitHub
Top 8.2% on proxy.golang.org
github.com/lthibault/netstr v0.0.0-20180523111635-faf314fe1b60
Efficient binary serialization of variable-length strings
1 version - Latest release: almost 6 years ago - 2 stars on GitHub
Top 9.7% on proxy.golang.org
github.com/itzmeanjan/pproto v0.0.0-20221217092654-ce0362e30e2f
Performant Protocol Buffer based data snapshotting mechanism
1 version - Latest release: over 1 year ago - 2 stars on GitHub
Top 9.4% on proxy.golang.org
github.com/sjml/beschi v0.1.12
bit-packing and unpacking code generator for C, C#, Go, Rust, Swift, and TypeScript
10 versions - Latest release: over 1 year ago - 2 stars on GitHub
Top 8.2% on proxy.golang.org
github.com/amstee/ecdsa-serializer v0.0.0-20180815193257-82b0ba622631
Ecdsa serializing utility functions
1 version - Latest release: almost 6 years ago - 2 stars on GitHub
Top 8.2% on proxy.golang.org
github.com/0x9ef/ethernet v0.0.0-20220423124409-2794ed7ded11
Copyright (c) 2022 0x9ef. All rights reserved. Use of this source code is governed by an MIT lice...
1 version - Latest release: about 2 years ago - 2 stars on GitHub
github.com/sarvalabs/go-polo v0.4.3
Go Implementation of the POLO Serialization Scheme
15 versions - Latest release: 2 months ago - 2 dependent packages - 1 dependent repositories - 2 stars on GitHub
github.com/arloliu/jsonpack v1.0.3
Package jsonpack is a fast and space efficiency JSON serialization golang library. It is a schema...
4 versions - Latest release: over 3 years ago - 1 dependent repositories - 3 stars on GitHub
github.com/souzomain/packer v0.0.0-20230422024505-59bf0d4e6dda
Packer is a compact, fast and crosss-platform serialization library for store data in a buffer
1 version - Latest release: about 1 year ago - 3 stars on GitHub
Top 8.2% on proxy.golang.org
github.com/itrabbit/sieve v0.0.0-20180722164625-c1a0b55d1000
GoLang Package for filtering fields models during serialization
1 version - Latest release: almost 6 years ago - 3 stars on GitHub
Top 8.2% on proxy.golang.org
github.com/erizocosmico/bindec v0.0.0-20190429224830-bc9598e7bab8
bindec generates encoders and decoders to encode and decode the binary representation of types
1 version - Latest release: about 5 years ago - 3 stars on GitHub
github.com/mprot/msgpack-go v0.0.0-20220328133847-6e9631ba2822
A MessagePack implementation for Go.
1 version - Latest release: about 2 years ago - 1 dependent package - 1 dependent repositories - 4 stars on GitHub
Top 7.4% on proxy.golang.org
github.com/wapc/tinygo-msgpack v0.1.6
MessagePack module for TinyGo
7 versions - Latest release: over 1 year ago - 6 dependent packages - 3 dependent repositories - 4 stars on GitHub
Top 8.2% on proxy.golang.org
github.com/karrick/goejs v0.0.4
Miniature Go library for properly encoding strings and IEEE 754 floats to JSON and back again
4 versions - Latest release: about 6 years ago - 4 stars on GitHub
Top 6.9% on proxy.golang.org
github.com/ardielle/ardielle-java v1.5.4
6 versions - Latest release: over 3 years ago - 4 stars on GitHub
Top 7.0% on proxy.golang.org
github.com/Microsoft/kiota-serialization-text-go v1.0.0
Text/plain serialization provider implementation for Kiota based SDKs
11 versions - Latest release: about 1 year ago - 5 stars on GitHub
Top 4.7% on proxy.golang.org
github.com/microsoft/kiota-serialization-text-go v1.0.0
Package textserialization is the default Kiota serialization implementation for text.
11 versions - Latest release: about 1 year ago - 49 dependent packages - 75 dependent repositories - 5 stars on GitHub
Top 8.2% on proxy.golang.org
github.com/recolude/unitpacking v1.0.0
A library for storing unit vectors in a representation that lends itself to saving space on disk.
2 versions - Latest release: about 3 years ago - 6 stars on GitHub
Top 8.2% on proxy.golang.org
github.com/lujjjh/go-javaio v0.2.7
Go implementation of Java Object Serialization Stream Protocol.
12 versions - Latest release: almost 4 years ago - 6 stars on GitHub
Top 7.7% on proxy.golang.org
github.com/lemon-mint/vstruct v1.7.0
Code Generation Based High Speed Data Serialization Tool
22 versions - Latest release: over 1 year ago - 6 stars on GitHub
Top 7.8% on proxy.golang.org
github.com/shenwei356/unik
A k-mer serialization package for Golang
Latest release: 21 days ago - 7 stars on GitHub
Top 8.0% on proxy.golang.org
github.com/shenwei356/unik/v5 v5.0.1
A k-mer serialization package for Golang
1 version - Latest release: over 2 years ago - 2 dependent packages - 2 dependent repositories - 7 stars on GitHub
Top 9.7% on proxy.golang.org
github.com/g4s8/go-bundle v0.1.1
Go binary bundle for typed data
2 versions - Latest release: over 3 years ago - 1 dependent package - 2 dependent repositories - 8 stars on GitHub
Top 8.6% on proxy.golang.org
github.com/surrealdb/cork v0.0.0-20211208110447-54ccd49930c9
CORK is a dynamic and static binary object serialization specification similar to GOB and Message...
1 version - Latest release: over 2 years ago - 1 dependent package - 1 dependent repositories - 9 stars on GitHub
github.com/cristalhq/bencode v0.4.0
Bencode encoding and decoding in Go.
6 versions - Latest release: 9 months ago - 3 dependent repositories - 9 stars on GitHub
github.com/Salvionied/apollo v1.0.10
Cardano Pure Golang Building Blocks
20 versions - Latest release: 5 months ago - 1 dependent package - 9 stars on GitHub
Top 7.6% on proxy.golang.org
github.com/meehow/securebytes v0.3.1
⚡️ Take any Go data type, serialize it to JSON or GOB and encrypt it with AES. Works 2.5x faster ...
5 versions - Latest release: about 4 years ago - 1 dependent package - 1 dependent repositories - 10 stars on GitHub
Top 6.8% on proxy.golang.org
github.com/vtopc/epoch v1.4.0
Package epoch contains primitives for marshaling/unmarshaling Unix timestamp/epoch to/from build-...
9 versions - Latest release: about 2 years ago - 2 dependent packages - 2 dependent repositories - 11 stars on GitHub
github.com/salvionied/apollo v1.0.11
Cardano Pure Golang Building Blocks
21 versions - Latest release: 5 months ago - 12 stars on GitHub
github.com/Salvionied/Apollo v1.0.11
Cardano Pure Golang Building Blocks
21 versions - Latest release: 5 months ago - 12 stars on GitHub
Top 9.0% on proxy.golang.org
github.com/astroband/ruby-xdr v3.0.3+incompatible
Read/write XDR encoded data structures (RFC 4506)
11 versions - Latest release: over 2 years ago - 12 stars on GitHub
Top 4.9% on proxy.golang.org
github.com/the729/lcs v0.1.5
Libra Canonical Serialization (LCS) library in golang
6 versions - Latest release: about 4 years ago - 16 dependent packages - 5 dependent repositories - 14 stars on GitHub
Top 2.9% on proxy.golang.org
github.com/ardielle/ardielle-go v1.5.2
9 versions - Latest release: about 5 years ago - 467 dependent packages - 823 dependent repositories - 14 stars on GitHub
Top 8.9% on proxy.golang.org
github.com/nikolaydubina/fpdecimal v0.19.1
🛫 Fixed-Point Decimals
21 versions - Latest release: 7 months ago - 2 dependent packages - 1 dependent repositories - 18 stars on GitHub
Top 6.4% on proxy.golang.org
github.com/ikkerens/ikeapack v1.5.1
Compact data serializer/packer written in Go, intended to produce a cross-language usable format.
8 versions - Latest release: about 5 years ago - 2 dependent packages - 2 dependent repositories - 19 stars on GitHub
Top 6.9% on proxy.golang.org
github.com/gxlb/binary v0.0.0-20171111162941-29b974f0b01d
Package binary is uesed to Encode/Decode between go data and byte slice. The main purpose of thi...
1 version - Latest release: over 6 years ago - 22 stars on GitHub
Top 5.2% on proxy.golang.org
github.com/fivebinaries/go-cardano-serialization v0.0.0-20220907134105-ec9b85086588
Golang library for serialization & deserialization of Cardano data structures.
1 version - Latest release: over 1 year ago - 4 dependent packages - 1 dependent repositories - 23 stars on GitHub
Top 9.6% on proxy.golang.org
github.com/RealTimeChris/Jsonifier v0.9.95
A few classes for parsing and serializing objects from/into JSON - very rapidly.
15 versions - Latest release: 3 months ago - 25 stars on GitHub
Top 9.6% on proxy.golang.org
github.com/realtimechris/jsonifier v0.9.95
A few classes for parsing and serializing objects from/into JSON - very rapidly.
15 versions - Latest release: 3 months ago - 25 stars on GitHub
Top 7.0% on proxy.golang.org
github.com/GeniusesGroup/libgo v0.0.0-20220929090155-5ff932cb408e
Opensource Library for the GO programming language
3 versions - Latest release: over 1 year ago - 1 dependent package - 2 dependent repositories - 28 stars on GitHub
Top 6.2% on proxy.golang.org
github.com/geniusesgroup/libgo v0.0.0-20220713101832-828057a9d3d4
Opensource Library for the GO programming language
10 versions - Latest release: almost 2 years ago - 28 stars on GitHub
Top 8.4% on proxy.golang.org
github.com/loopholelabs/polyglot v1.1.4
A high-performance serialization framework used for encoding and decoding arbitrary datastructure...
12 versions - Latest release: 7 months ago - 15 dependent packages - 1 dependent repositories - 29 stars on GitHub
Top 9.5% on proxy.golang.org
github.com/billywei01/packable v0.0.0-20231215020839-00010f615769
An effective and well designed serialization framework.
1 version - Latest release: 5 months ago - 30 stars on GitHub
Top 4.4% on proxy.golang.org
github.com/renproject/surge v1.2.7
Simple, specialised, and efficient binary marshaling
18 versions - Latest release: over 2 years ago - 27 dependent packages - 20 dependent repositories - 36 stars on GitHub
Top 9.6% on proxy.golang.org
github.com/j8r/crystalizer v1.1.6
(De)serialize any Crystal object - out of the box. Supports JSON, YAML and Byte format.
25 versions - Latest release: over 1 year ago - 40 stars on GitHub
Top 2.5% on proxy.golang.org
github.com/polydawn/refmt v0.89.0
Refmt is a serialization and object-mapping library. Look to the README on github for more high-...
2 versions - Latest release: over 1 year ago - 958 dependent packages - 1,553 dependent repositories - 45 stars on GitHub
Top 9.6% on proxy.golang.org
github.com/fisxoj/sanity-clause v0.3.0
A data serialization/contract library for common lisp
1 version - Latest release: over 5 years ago - 46 stars on GitHub
Top 7.6% on proxy.golang.org
github.com/ruby-amqp/amq-protocol v2.3.2+incompatible
AMQP 0.9.1 protocol serialization and deserialization implementation for Ruby (2.0+)
32 versions - Latest release: almost 4 years ago - 47 stars on GitHub
Related Keywords
golang 99 go 84 json 38 rpc 32 deserialization 31 encoding 28 marshalling 25 binary 22 python 21 cpp 20 protobuf 19 serialization-library 18 javascript 18 serializer 18 java 17 json-parser 17 rust 16 msgpack 15 parser 15 c 14 typescript 14 zero-copy 14 cross-platform 13 c-plus-plus 12 flatbuffers 11 protocol 10 swift 10 xml 10 grpc 9 c-sharp 8 mmap 8 cross-language 8 protocol-buffers 7 library 7 messagepack 7 parsing 7 dotnet 7 api 6 protoc 6 decoding 6 capnproto 6 object-capabilities 6 capnp 6 data 6 capabilities 6 capability-based 6 capn-proto 6 fast 5 csharp 5 reflection 5 kdl 5 compression 5 robotics 5 cbor 5 hacktoberfest 5 rpc-library 5 yaml 5 data-exchange 4 jit 4 lightning 4 multiple-language 4 persistence 4 transfer 4 protobuf-runtime 4 protocol-compiler 4 sdk-go 4 kotlin 4 codec 4 header-only 4 performance 4 cardano 4 ruby 4 cplusplus 4 serialize 4 validation 4 golang-library 4 rpc-server 3 rpc-framework 3 rpc-client 3 rpc-api 3 encoder 3 hprose 3 converter 3 embedded 3 gob 3 cross-domain 3 cross-device 3 cpp17 3 schema 3 txbuilding 3 ledger 3 code-generation 3 dotnet-core 3 data-interchange 3 bitproto 3 json-schema 3 signature 2 security 2 cbor-library 2 hmac 2