cryptoutil

package module

v0.0.1 Latest Latest Go to latest Published: Apr 1, 2019 License: MIT Imports: 14 Imported by: 0

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Repository

github.com/satnamram/cryptoutil

README ¶

cryptoutil

collection of crypto functions

Documentation ¶

Index ¶

Constants
Variables
func Decrypt(key *[KeyLen]byte, data []byte) ([]byte, error)
func Encrypt(key *[KeyLen]byte, data []byte) ([]byte, error)
func GenerateSalt() ([]byte, error)
type Identity
- func CreateIdentity(name, comment, email string) (*Identity, error)
- func LoadIdentity(b []byte) (*Identity, error)
type ScryptConfig
- func DecodeScryptConfig(data []byte) (ScryptConfig, error)

Constants ¶

View Source

const (
	SaltLen   = 32
	KeyLen    = 32
	NonceLen  = 24
	ScryptLen = 24
)

Variables ¶

View Source

var ScryptConfigHigh = ScryptConfig{
	N: 1 << uint64(19),
	R: 8,
	P: 1,
}

ScryptConfigHigh requires 512MB RAM for less than 5 seconds (i7).

View Source

var ScryptConfigLow = ScryptConfig{
	N: 1 << uint64(17),
	R: 8,
	P: 1,
}

ScryptConfigLow requires 128MB RAM for about a second (i7).

View Source

var ScryptConfigMid = ScryptConfig{
	N: 1 << uint64(18),
	R: 8,
	P: 1,
}

ScryptConfigMid requires 256MB RAM for less than 5 seconds (i7).

View Source

var ScryptConfigParanoid = ScryptConfig{
	N: 1 << uint64(20),
	R: 8,
	P: 1,
}

ScryptConfigParanoid requires 1GB RAM for about 5 seconds (i7).

View Source

var ScryptConfigRealtime = ScryptConfig{
	N: 1 << uint64(15),
	R: 8,
	P: 1,
}

ScryptConfigRealtime requires 32MB RAM for under a second (i7).

Functions ¶

func Decrypt ¶

func Decrypt(key *[KeyLen]byte, data []byte) ([]byte, error)

panics if key is nil

func Encrypt ¶

func Encrypt(key *[KeyLen]byte, data []byte) ([]byte, error)

func GenerateSalt ¶

func GenerateSalt() ([]byte, error)

Types ¶

type Identity ¶

type Identity struct {
	Entity *openpgp.Entity
}

func CreateIdentity ¶

func CreateIdentity(name, comment, email string) (*Identity, error)

func LoadIdentity ¶

func LoadIdentity(b []byte) (*Identity, error)

func (*Identity) Encode ¶

func (i *Identity) Encode() ([]byte, error)

func (*Identity) PublicKey ¶

func (i *Identity) PublicKey() ([]byte, error)

func (*Identity) Sign ¶

func (i *Identity) Sign(r io.Reader) ([]byte, error)

func (*Identity) UserID ¶

func (i *Identity) UserID() *packet.UserId

func (*Identity) Verify ¶

func (i *Identity) Verify(r io.Reader, signature []byte) error

type ScryptConfig ¶

type ScryptConfig struct {
	// CPU/memory cost parameter (logN)
	N uint64 `json:"n"`

	// block size parameter (octets)
	R uint64 `json:"r"`

	// parallelisation parameter (positive int)
	P uint64 `json:"p"`
}

func DecodeScryptConfig ¶

func DecodeScryptConfig(data []byte) (ScryptConfig, error)

func (ScryptConfig) Decrypt ¶

func (config ScryptConfig) Decrypt(password string, data []byte) ([]byte, error)

func (ScryptConfig) Derive ¶

func (config ScryptConfig) Derive(salt []byte, password string) (*[KeyLen]byte, error)

func (ScryptConfig) Encode ¶

func (config ScryptConfig) Encode() []byte

func (ScryptConfig) Encrypt ¶

func (config ScryptConfig) Encrypt(password string, data []byte) ([]byte, error)

func (ScryptConfig) MemoryRequiredMB ¶

func (config ScryptConfig) MemoryRequiredMB() int

func (ScryptConfig) String ¶

func (config ScryptConfig) String() string

func (ScryptConfig) TimeRequiredMS ¶

func (config ScryptConfig) TimeRequiredMS() (int, error)

Source Files ¶

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