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Index ¶
Constants ¶
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const ( // RecommendedSeedLen is the recommended length in bytes for a seed // to a master node. RecommendedSeedLen = 32 // 256 bits // HardenedKeyStart is the index at which a hardened key starts. Each // extended key has 2^31 normal child keys and 2^31 hardned child keys. // Thus the range for normal child keys is [0, 2^31 - 1] and the range // for hardened child keys is [2^31, 2^32 - 1]. HardenedKeyStart = 0x80000000 // 2^31 // MinSeedBytes is the minimum number of bytes allowed for a seed to // a master node. MinSeedBytes = 16 // 128 bits // MaxSeedBytes is the maximum number of bytes allowed for a seed to // a master node. MaxSeedBytes = 64 // 512 bits )
Variables ¶
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var ( // ErrInvalidSeedLen describes an error in which the provided seed or // seed length is not in the allowed range. ErrInvalidSeedLen = fmt.Errorf( "seed length must be between %d and %d bits", MinSeedBytes*8, MaxSeedBytes*8, ) // ErrUnusableSeed describes an error in which the provided seed is not // usable due to the derived key falling outside of the valid range for // secp256k1 private keys. This error indicates the caller must choose // another seed. ErrUnusableSeed = errors.New("unusable seed") )
Functions ¶
func GenerateSeed ¶
GenerateSeed returns a cryptographically secure random seed that can be used as the input for the NewMaster function to generate a new master node.
The length is in bytes and it must be between 16 and 64 (128 to 512 bits). The recommended length is 32 (256 bits) as defined by the RecommendedSeedLen constant.
`rng` should be the best available source of entropy. If nil, crypto/rand.Reader is used.
func NewMaster ¶
NewMaster creates a master secret key and a master chain code per the procedure described [in BIP32]bip32-master.
func PrivateToPublic ¶
PrivateToPublic implements the Private -> Public derivation
Types ¶
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