package crypto

import "github.com/tendermint/tendermint/crypto"

Index ¶

• Constants
• func CRandBytes(numBytes int) []byte
• func CRandHex(numDigits int) string
• func CReader() io.Reader
• func Sha256(bytes []byte) []byte
• type Address
• func AddressHash(bz []byte) Address
• type PrivKey
• type PubKey
• type Symmetric

Examples ¶

• Sha256

Package Files ¶

crypto.go doc.go hash.go random.go version.go

Constants ¶

const (
    // AddressSize is the size of a pubkey address.
    AddressSize = tmhash.TruncatedSize
)

const Version = "0.9.0-dev"

func CRandBytes ¶ Uses

func CRandBytes(numBytes int) []byte

This only uses the OS's randomness

func CRandHex ¶ Uses

func CRandHex(numDigits int) string

CRandHex returns a hex encoded string that's floor(numDigits/2) * 2 long.

Note: CRandHex(24) gives 96 bits of randomness that are usually strong enough for most purposes.

func CReader ¶ Uses

func CReader() io.Reader

Returns a crand.Reader.

func Sha256 ¶ Uses

func Sha256(bytes []byte) []byte

sum := crypto.Sha256([]byte("This is Tendermint"))
fmt.Printf("%x\n", sum)

f91afb642f3d1c87c17eb01aae5cb65c242dfdbe7cf1066cc260f4ce5d33b94e

type Address ¶ Uses

type Address = bytes.HexBytes

An address is a []byte, but hex-encoded even in JSON. []byte leaves us the option to change the address length. Use an alias so Unmarshal methods (with ptr receivers) are available too.

func AddressHash ¶ Uses

func AddressHash(bz []byte) Address

type PrivKey ¶ Uses

type PrivKey interface {
    Bytes() []byte
    Sign(msg []byte) ([]byte, error)
    PubKey() PubKey
    Equals(PrivKey) bool
    Type() string
}

type PubKey ¶ Uses

type PubKey interface {
    Address() Address
    Bytes() []byte
    VerifySignature(msg []byte, sig []byte) bool
    Equals(PubKey) bool
    Type() string
}

type Symmetric ¶ Uses

type Symmetric interface {
    Keygen() []byte
    Encrypt(plaintext []byte, secret []byte) (ciphertext []byte)
    Decrypt(ciphertext []byte, secret []byte) (plaintext []byte, err error)
}

Directories ¶