crypto

func CheckUserRegisterCert ¶

func CheckUserRegisterCert(cert []byte, idhex string, fpr string, chainid uint64) error

func CompressPubkey ¶

func CompressPubkey(pubkey *ecdsa.PublicKey) []byte

CompressPubkey encodes a public key to the 33-byte compressed format.

func CreateAddress ¶

func CreateAddress(b common.Address, nonce uint64) common.Address

Creates an ethereum address given the bytes and the nonce

func DecompressPubkey ¶

func DecompressPubkey(pubkey []byte) (*ecdsa.PublicKey, error)

DecompressPubkey parses a public key in the 33-byte compressed format.

func DefaultDataDir ¶

func DefaultDataDir() string

DefaultDataDir is the default data directory to use for the databases and other persistence requirements.

func Ecrecover ¶

func Ecrecover(hash, sig []byte) ([]byte, error)

Ecrecover returns the uncompressed public key that created the given signature.

func FromECDSA ¶

func FromECDSA(priv *ecdsa.PrivateKey) []byte

FromECDSA exports a private key into a binary dump.

func FromECDSAPub ¶

func FromECDSAPub(pub *ecdsa.PublicKey) []byte

func GenRCA ¶

func GenRCA(emailAddress string, isCA bool, caName string, privName string, pubName string) error

GenRCA generate root certificate

func GenerateCreditPubKey ¶

func GenerateCreditPubKey(committeepubkey string, privkey *ecdsa.PrivateKey) *ecdsa.PublicKey

GenerateCreditPubKey returns credit info encrypt Public key

func GenerateHpriv ¶

func GenerateHpriv(privateKey *ecdsa.PrivateKey, privateKey2 *ecdsa.PrivateKey, Bpub *ecdsa.PublicKey) (retPriv1 *ecdsa.PrivateKey, err error)

GenerateHpriv generates the private key for an sub account using receiver's main account's private key

func GenerateKey ¶

func GenerateKey() (*ecdsa.PrivateKey, error)

func GenerateRSAKeypair ¶

func GenerateRSAKeypair() error

GenerateRSAKeypair generate RSA format public key and private key

func GenerateSubPrivKey ¶

func GenerateSubPrivKey(B *ecdsa.PublicKey, AprivKey *ecdsa.PrivateKey) (H *ecdsa.PublicKey, S *ecdsa.PublicKey, s *ecdsa.PrivateKey, err error)

GenerateSubPrivKey generates an OTA account for receiver using receiver's publickey

func GenerateSubPubKey ¶

func GenerateSubPubKey(committeePub *ecdsa.PublicKey, AprivKey *ecdsa.PrivateKey) (ret []string, s *ecdsa.PrivateKey, err error)

Generate account interface

func Hash ¶

func Hash(data []byte)

Sign signs data with rsa-sha256

func HexToECDSA ¶

func HexToECDSA(hexkey string) (*ecdsa.PrivateKey, error)

HexToECDSA parses a secp256k1 private key.

func Keccak256 ¶

func Keccak256(data ...[]byte) []byte

Keccak256 calculates and returns the Keccak256 hash of the input data.

func Keccak256Hash ¶

func Keccak256Hash(data ...[]byte) (h common.Hash)

Keccak256Hash calculates and returns the Keccak256 hash of the input data, converting it to an internal Hash data structure.

func Keccak512 ¶

func Keccak512(data ...[]byte) []byte

Keccak512 calculates and returns the Keccak512 hash of the input data.

func LoadECDSA ¶

func LoadECDSA(file string) (*ecdsa.PrivateKey, error)

LoadECDSA loads a secp256k1 private key from the given file.

func PubkeyToAddress ¶

func PubkeyToAddress(p ecdsa.PublicKey) common.Address

func RSA_Sign ¶

func RSA_Sign(message string) (string, error)

func RSA_Verify ¶

func RSA_Verify(message string, sig string) bool

RSA_Verify verify RSA signature

func RSA_Verify_Pub ¶

func RSA_Verify_Pub(message string, sig string, pub *rsa.PublicKey) bool

func RSA_Verify_Standard ¶

func RSA_Verify_Standard(message string, sig string, pubKey interface{}) error

func ReadUserCert ¶

func ReadUserCert() string

ReadUserCert read userCert from

func S256 ¶

func S256() elliptic.Curve

S256 returns an instance of the secp256k1 curve.

func SaveCA ¶

func SaveCA(caName string, cert []byte) error

SaveCA save certificate with pem format

func SaveECDSA ¶

func SaveECDSA(file string, key *ecdsa.PrivateKey) error

SaveECDSA saves a secp256k1 private key to the given file with restrictive permissions. The key data is saved hex-encoded.

func ScanA1 ¶

func ScanA1(b []byte, A *ecdsa.PublicKey, S *ecdsa.PublicKey) ecdsa.PublicKey

A1=[hash([b]A)]G+S

func ScanPubSharesA1 ¶

func ScanPubSharesA1(bA *ecdsa.PublicKey, S *ecdsa.PublicKey) ecdsa.PublicKey

A1=[hash([b]A)]G+S

func SigToPub ¶

func SigToPub(hash, sig []byte) (*ecdsa.PublicKey, error)

SigToPub returns the public key that created the given signature.

func Sign ¶

func Sign(hash []byte, prv *ecdsa.PrivateKey) (sig []byte, err error)

Sign calculates an ECDSA signature.

This function is susceptible to chosen plaintext attacks that can leak information about the private key that is used for signing. Callers must be aware that the given hash cannot be chosen by an adversery. Common solution is to hash any input before calculating the signature.

The produced signature is in the [R || S || V] format where V is 0 or 1.

func ToECDSA ¶

func ToECDSA(d []byte) (*ecdsa.PrivateKey, error)

ToECDSA creates a private key with the given D value.

func ToECDSAPub ¶

func ToECDSAPub(pub []byte) *ecdsa.PublicKey

func ToECDSAUnsafe ¶

func ToECDSAUnsafe(d []byte) *ecdsa.PrivateKey

ToECDSAUnsafe blindly converts a binary blob to a private key. It should almost never be used unless you are sure the input is valid and want to avoid hitting errors due to bad origin encoding (0 prefixes cut off).

func ValidateSignatureValues ¶

func ValidateSignatureValues(v byte, r, s *big.Int, homestead bool) bool

ValidateSignatureValues verifies whether the signature values are valid with the given chain rules. The v value is assumed to be either 0 or 1.

func VerifySignature ¶

func VerifySignature(pubkey, hash, signature []byte) bool

VerifySignature checks that the given public key created signature over hash. The public key should be in compressed (33 bytes) or uncompressed (65 bytes) format. The signature should have the 64 byte [R || S] format.