compress

package module
v0.0.7 Latest Latest
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 Go to latest Published: Nov 5, 2021 License: MIT Imports: 9 Imported by: 7

README

compress

tools for comress and encrypt

Documentation

Index

Constants

This section is empty.

Variables

View Source 
var Errors map[int]string = map[int]string{
	10200000: "Generator.Compress: algorithm %v is not exists and encrypt key is not null",
	10200001: "Generator.Restore: algorithm %v is not exists",

	10201000: "GZipRestore: gzip reader not created with error",
	10201001: "GZipRestore: read gzip error",
	10201002: "GZipRestore: readresult is large",
	10201003: "GZipRestore: close gzip error",

	10201100: "GZipCompress: gzip writer fail on create",
	10201101: "GZipCompress: gzip writer fail on write",
	10201102: "GZipCompress: gzip writer fail on close",

	10202000: "AesEncrypt: input key len %v != 32",
	10202001: "AesEncrypt: NewCipher fail",
	10202002: "AesEncrypt: NewGCM fail",
	10202003: "AesEncrypt: nonce fill fail",

	10202100: "AesDecrypt: input key len %v != 32",
	10202101: "AesDecrypt: NewCipher fail",
	10202102: "AesDecrypt: NewGCM fail",
	10202103: "AesDecrypt: decrypt fail",
}

Errors codes and description

View Source 
var LimitZipRestore int64 = 1e8

Functions

func AesKeyGenerate 

func AesKeyGenerate() []byte

AesKeyGenerate generates a random 32 byte (256 bit) key for AES-256

Types

type CompressFunc 

type CompressFunc func(ctx context.Context, algorithm CompressionType, body []byte, encryptKey []byte) (algorithmUsed CompressionType, result []byte, err *mft.Error)

func GZipCompressGenerator 

func GZipCompressGenerator(level int) CompressFunc

type CompressionType added in v0.0.4 

type CompressionType string

Compression or encriprion type 

const (
	NoCompression CompressionType = ""
	Zip           CompressionType = "gzip"
	Zip1          CompressionType = "gzip1"
	Zip9          CompressionType = "gzip9"

	// Aes - AES 256 alg
	Aes CompressionType = "aes"
)

Algs

func AesDecrypt 

func AesDecrypt(ctx context.Context, algorithm CompressionType, body []byte, decryptKey []byte,
) (algorithmUsed CompressionType, result []byte, err *mft.Error)

func AesEncrypt 

func AesEncrypt(ctx context.Context, algorithm CompressionType, body []byte, encryptKey []byte,
) (algorithmUsed CompressionType, result []byte, err *mft.Error)

func GZipCompress 

func GZipCompress(ctx context.Context, level int, algorithm CompressionType, body []byte, encryptKey []byte) (algorithmUsed CompressionType, result []byte, err *mft.Error)

func GZipRestore 

func GZipRestore(ctx context.Context, algorithm CompressionType, body []byte, decryptKey []byte) (algorithmUsed CompressionType, result []byte, err *mft.Error)

type Generator 

type Generator struct {
	// contains filtered or unexported fields
}

Generator - compressor

func GeneratorCreate 

func GeneratorCreate(gzipDefaultLevel int) *Generator

GeneratorCreate - generate with default algs

func (*Generator) Add 

func (g *Generator) Add(name CompressionType, compressor CompressFunc, restore RestoreFunc)

func (*Generator) Compress 

func (g *Generator) Compress(ctx context.Context, must bool, algorithm CompressionType, body []byte, encryptKey []byte) (algorithmUsed CompressionType, result []byte, err *mft.Error)

func (*Generator) Init 

func (g *Generator) Init()

func (*Generator) Restore 

func (g *Generator) Restore(ctx context.Context, algorithm CompressionType, body []byte, decryptKey []byte) (algorithmUsed CompressionType, result []byte, err *mft.Error)

type RestoreFunc 

type RestoreFunc func(ctx context.Context, algorithm CompressionType, body []byte, decryptKey []byte) (algorithmUsed CompressionType, result []byte, err *mft.Error)

Source Files

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