crypto

package
v0.2.3 Latest Latest
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 Go to latest Published: Jun 20, 2023 License: MIT Imports: 15 Imported by: 0

Documentation

Overview

crpyto provides the nessesary encryption methods for olm/megolm

Index

Constants

View Source 
const (
	Curve25519KeyLength = curve25519.ScalarSize //The length of the private key.

)
View Source 
const (
	ED25519SignatureSize = ed25519.SignatureSize //The length of a signature
)

Variables

This section is empty.

Functions

func AESCBCBlocksize 

func AESCBCBlocksize() int

AESCBCBlocksize returns the blocksize of the encryption method

func AESCBCDecrypt 

func AESCBCDecrypt(key, iv, ciphertext []byte) ([]byte, error)

AESCBCDecrypt decrypts the ciphertext with the key and iv. len(iv) must be equal to the blocksize!

func AESCBCEncrypt 

func AESCBCEncrypt(key, iv, plaintext []byte) ([]byte, error)

AESCBCEncrypt encrypts the plaintext with the key and iv. len(iv) must be equal to the blocksize!

func HKDFSHA256 

func HKDFSHA256(input, salt, info []byte) io.Reader

HKDFSHA256 is the key deivation function based on HMAC and returns a reader based on input. salt and info can both be nil. The reader can be used to read an arbitary length of bytes which are based on all parameters.

func HMACSHA256 

func HMACSHA256(key, input []byte) []byte

HMACSHA256 returns the hash message authentication code with SHA-256 of the input with the key.

func SHA256 

func SHA256(value []byte) []byte

SHA256 return the SHA-256 of the value.

Types

type Curve25519KeyPair 

type Curve25519KeyPair struct {
	PrivateKey Curve25519PrivateKey `json:"private,omitempty"`
	PublicKey  Curve25519PublicKey  `json:"public,omitempty"`
}

Curve25519KeyPair stores both parts of a curve25519 key.

func Curve25519GenerateFromPrivate 

func Curve25519GenerateFromPrivate(private Curve25519PrivateKey) (Curve25519KeyPair, error)

Curve25519GenerateFromPrivate creates a new curve25519 key pair with the private key given.

func Curve25519GenerateKey 

func Curve25519GenerateKey(reader io.Reader) (Curve25519KeyPair, error)

Curve25519GenerateKey creates a new curve25519 key pair. If reader is nil, the random data is taken from crypto/rand.

func (Curve25519KeyPair) B64Encoded 

func (c Curve25519KeyPair) B64Encoded() id.Curve25519

B64Encoded returns a base64 encoded string of the public key.

func (Curve25519KeyPair) PickleLen added in v0.2.0 

func (c Curve25519KeyPair) PickleLen() int

PickleLen returns the number of bytes the pickled key pair will have.

func (Curve25519KeyPair) PickleLibOlm added in v0.2.0 

func (c Curve25519KeyPair) PickleLibOlm(target []byte) (int, error)

PickleLibOlm encodes the key pair into target. target has to have a size of at least PickleLen() and is written to from index 0. It returns the number of bytes written.

func (Curve25519KeyPair) SharedSecret 

func (c Curve25519KeyPair) SharedSecret(pubKey Curve25519PublicKey) ([]byte, error)

SharedSecret returns the shared secret between the key pair and the given public key.

func (*Curve25519KeyPair) UnpickleLibOlm added in v0.2.0 

func (c *Curve25519KeyPair) UnpickleLibOlm(value []byte) (int, error)

UnpickleLibOlm decodes the unencryted value and populates the key pair accordingly. It returns the number of bytes read.

type Curve25519PrivateKey 

type Curve25519PrivateKey []byte

Curve25519PrivateKey represents the private key for curve25519 usage

func (Curve25519PrivateKey) Equal 

func (c Curve25519PrivateKey) Equal(x Curve25519PrivateKey) bool

Equal compares the private key to the given private key.

func (Curve25519PrivateKey) PubKey 

func (c Curve25519PrivateKey) PubKey() (Curve25519PublicKey, error)

PubKey returns the public key derived from the private key.

func (Curve25519PrivateKey) SharedSecret 

func (c Curve25519PrivateKey) SharedSecret(pubKey Curve25519PublicKey) ([]byte, error)

SharedSecret returns the shared secret between the private key and the given public key.

type Curve25519PublicKey 

type Curve25519PublicKey []byte

Curve25519PublicKey represents the public key for curve25519 usage

func (Curve25519PublicKey) B64Encoded 

func (c Curve25519PublicKey) B64Encoded() id.Curve25519

B64Encoded returns a base64 encoded string of the public key.

func (Curve25519PublicKey) Equal 

func (c Curve25519PublicKey) Equal(x Curve25519PublicKey) bool

Equal compares the public key to the given public key.

func (Curve25519PublicKey) PickleLen added in v0.2.0 

func (c Curve25519PublicKey) PickleLen() int

PickleLen returns the number of bytes the pickled public key will have.

func (Curve25519PublicKey) PickleLibOlm added in v0.2.0 

func (c Curve25519PublicKey) PickleLibOlm(target []byte) (int, error)

PickleLibOlm encodes the public key into target. target has to have a size of at least PickleLen() and is written to from index 0. It returns the number of bytes written.

func (*Curve25519PublicKey) UnpickleLibOlm added in v0.2.0 

func (c *Curve25519PublicKey) UnpickleLibOlm(value []byte) (int, error)

UnpickleLibOlm decodes the unencryted value and populates the public key accordingly. It returns the number of bytes read.

type Ed25519KeyPair 

type Ed25519KeyPair struct {
	PrivateKey Ed25519PrivateKey `json:"private,omitempty"`
	PublicKey  Ed25519PublicKey  `json:"public,omitempty"`
}

Ed25519KeyPair stores both parts of a ed25519 key.

func Ed25519GenerateFromPrivate 

func Ed25519GenerateFromPrivate(privKey Ed25519PrivateKey) Ed25519KeyPair

Ed25519GenerateFromPrivate creates a new ed25519 key pair with the private key given.

func Ed25519GenerateFromSeed added in v0.2.0 

func Ed25519GenerateFromSeed(seed []byte) Ed25519KeyPair

Ed25519GenerateFromSeed creates a new ed25519 key pair with a given seed.

func Ed25519GenerateKey 

func Ed25519GenerateKey(reader io.Reader) (Ed25519KeyPair, error)

Ed25519GenerateKey creates a new ed25519 key pair. If reader is nil, the random data is taken from crypto/rand.

func (Ed25519KeyPair) B64Encoded 

func (c Ed25519KeyPair) B64Encoded() id.Ed25519

B64Encoded returns a base64 encoded string of the public key.

func (Ed25519KeyPair) PickleLen added in v0.2.0 

func (c Ed25519KeyPair) PickleLen() int

PickleLen returns the number of bytes the pickled key pair will have.

func (Ed25519KeyPair) PickleLibOlm added in v0.2.0 

func (c Ed25519KeyPair) PickleLibOlm(target []byte) (int, error)

PickleLibOlm encodes the key pair into target. target has to have a size of at least PickleLen() and is written to from index 0. It returns the number of bytes written.

func (Ed25519KeyPair) Sign 

func (c Ed25519KeyPair) Sign(message []byte) []byte

Sign returns the signature for the message.

func (*Ed25519KeyPair) UnpickleLibOlm added in v0.2.0 

func (c *Ed25519KeyPair) UnpickleLibOlm(value []byte) (int, error)

UnpickleLibOlm decodes the unencryted value and populates the key pair accordingly. It returns the number of bytes read.

func (Ed25519KeyPair) Verify 

func (c Ed25519KeyPair) Verify(message, givenSignature []byte) bool

Verify checks the signature of the message against the givenSignature

type Ed25519PrivateKey 

type Ed25519PrivateKey ed25519.PrivateKey

Curve25519PrivateKey represents the private key for ed25519 usage. This is just a wrapper.

func (Ed25519PrivateKey) Equal 

func (c Ed25519PrivateKey) Equal(x Ed25519PrivateKey) bool

Equal compares the private key to the given private key.

func (Ed25519PrivateKey) PubKey 

func (c Ed25519PrivateKey) PubKey() Ed25519PublicKey

PubKey returns the public key derived from the private key.

func (Ed25519PrivateKey) Sign 

func (c Ed25519PrivateKey) Sign(message []byte) []byte

Sign returns the signature for the message.

type Ed25519PublicKey 

type Ed25519PublicKey ed25519.PublicKey

Ed25519PublicKey represents the public key for ed25519 usage. This is just a wrapper.

func (Ed25519PublicKey) B64Encoded 

func (c Ed25519PublicKey) B64Encoded() id.Curve25519

B64Encoded returns a base64 encoded string of the public key.

func (Ed25519PublicKey) Equal 

func (c Ed25519PublicKey) Equal(x Ed25519PublicKey) bool

Equal compares the public key to the given public key.

func (Ed25519PublicKey) PickleLen added in v0.2.0 

func (c Ed25519PublicKey) PickleLen() int

PickleLen returns the number of bytes the pickled public key will have.

func (Ed25519PublicKey) PickleLibOlm added in v0.2.0 

func (c Ed25519PublicKey) PickleLibOlm(target []byte) (int, error)

PickleLibOlm encodes the public key into target. target has to have a size of at least PickleLen() and is written to from index 0. It returns the number of bytes written.

func (*Ed25519PublicKey) UnpickleLibOlm added in v0.2.0 

func (c *Ed25519PublicKey) UnpickleLibOlm(value []byte) (int, error)

UnpickleLibOlm decodes the unencryted value and populates the public key accordingly. It returns the number of bytes read.

func (Ed25519PublicKey) Verify 

func (c Ed25519PublicKey) Verify(message, givenSignature []byte) bool

Verify checks the signature of the message against the givenSignature

type OneTimeKey 

type OneTimeKey struct {
	ID        uint32            `json:"id"`
	Published bool              `json:"published"`
	Key       Curve25519KeyPair `json:"key,omitempty"`
}

OneTimeKey stores the information about a one time key.

func (OneTimeKey) Equal 

func (otk OneTimeKey) Equal(s OneTimeKey) bool

Equal compares the one time key to the given one.

func (OneTimeKey) KeyIDEncoded added in v0.2.0 

func (c OneTimeKey) KeyIDEncoded() string

KeyIDEncoded returns the base64 encoded id.

func (OneTimeKey) PickleLen added in v0.2.0 

func (c OneTimeKey) PickleLen() int

PickleLen returns the number of bytes the pickled OneTimeKey will have.

func (OneTimeKey) PickleLibOlm added in v0.2.0 

func (c OneTimeKey) PickleLibOlm(target []byte) (int, error)

PickleLibOlm encodes the key pair into target. target has to have a size of at least PickleLen() and is written to from index 0. It returns the number of bytes written.

func (OneTimeKey) PublicKeyEncoded added in v0.2.0 

func (c OneTimeKey) PublicKeyEncoded() id.Curve25519

PublicKeyEncoded returns the base64 encoded public key

func (*OneTimeKey) UnpickleLibOlm added in v0.2.0 

func (c *OneTimeKey) UnpickleLibOlm(value []byte) (int, error)

UnpickleLibOlm decodes the unencryted value and populates the OneTimeKey accordingly. It returns the number of bytes read.

Source Files

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