crypto

Documentation

Index

• func SHA256Hash(data []byte) []byte
• func SHA256ToBase64(hashed []byte) string
• func Sign(privateKey *rsa.PrivateKey, hash crypto.Hash, hashed []byte) ([]byte, error)
• func VerifySignature(publicKey *rsa.PublicKey, hash crypto.Hash, hashed []byte, signature []byte) bool

Functions

func SHA256Hash

func SHA256Hash(data []byte) []byte

SHA256Hash computes SHA256 hash of data and returns hash in []byte format.

func SHA256ToBase64

func SHA256ToBase64(hashed []byte) string

SHA256ToBase64 encoded hashed value to base64 format.

func Sign

func Sign(privateKey *rsa.PrivateKey, hash crypto.Hash, hashed []byte) ([]byte, error)

Sign calculated the RSA signature of hashed value using RSA private key.

To generate hash you can use generate.SHA256Hash function.

func VerifySignature

func VerifySignature(publicKey *rsa.PublicKey, hash crypto.Hash, hashed []byte, signature []byte) bool

VerifySignature verifies the RSA signature using RSA public key and hashed value. Note that you should calculate hash again in order to prevent any modification in transport (MITM attack).

To generate hash you can use generate.SHA256Hash function.