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Export the hdkeychain min and max seed byte lens.

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This commit is contained in:
Dave Collins 2014-09-25 22:13:42 -05:00
parent 2539ca9860
commit ea27722dac
1 changed files with 9 additions and 9 deletions
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18
hdkeychain/extendedkey.go
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@ -35,13 +35,13 @@ const (
// for hardened child keys is [2^31, 2^32 - 1]. // for hardened child keys is [2^31, 2^32 - 1].
HardenedKeyStart = 0x80000000 // 2^31 HardenedKeyStart = 0x80000000 // 2^31
// minSeedBytes is the minimum number of bytes allowed for a seed to // MinSeedBytes is the minimum number of bytes allowed for a seed to
// a master node. // a master node.
minSeedBytes = 16 // 128 bits MinSeedBytes = 16 // 128 bits
// maxSeedBytes is the maximum number of bytes allowed for a seed to // MaxSeedBytes is the maximum number of bytes allowed for a seed to
// a master node. // a master node.
maxSeedBytes = 64 // 512 bits MaxSeedBytes = 64 // 512 bits
// serializedKeyLen is the length of a serialized public or private // serializedKeyLen is the length of a serialized public or private
// extended key. It consists of 4 bytes version, 1 byte depth, 4 bytes // extended key. It consists of 4 bytes version, 1 byte depth, 4 bytes
@ -77,7 +77,7 @@ var (
// ErrInvalidSeedLen describes an error in which the provided seed or // ErrInvalidSeedLen describes an error in which the provided seed or
// seed length is not in the allowed range. // seed length is not in the allowed range.
ErrInvalidSeedLen = fmt.Errorf("seed length must be between %d and %d "+ ErrInvalidSeedLen = fmt.Errorf("seed length must be between %d and %d "+
"bits", minSeedBytes*8, maxSeedBytes*8) "bits", MinSeedBytes*8, MaxSeedBytes*8)
// ErrBadChecksum describes an error in which the checksum encoded with // ErrBadChecksum describes an error in which the checksum encoded with
// a serialized extended key does not match the calculated value. // a serialized extended key does not match the calculated value.
@ -440,8 +440,8 @@ func (k *ExtendedKey) Zero() {
// returned if this should occur, so the caller must check for it and generate a // returned if this should occur, so the caller must check for it and generate a
// new seed accordingly. // new seed accordingly.
func NewMaster(seed []byte) (*ExtendedKey, error) { func NewMaster(seed []byte) (*ExtendedKey, error) {
// Per [BIP32], the seed must be in range [minSeedBytes, maxSeedBytes]. // Per [BIP32], the seed must be in range [MinSeedBytes, MaxSeedBytes].
if len(seed) < minSeedBytes || len(seed) > maxSeedBytes { if len(seed) < MinSeedBytes || len(seed) > MaxSeedBytes {
return nil, ErrInvalidSeedLen return nil, ErrInvalidSeedLen
} }
@ -529,8 +529,8 @@ func NewKeyFromString(key string) (*ExtendedKey, error) {
// The recommended length is 32 (256 bits) as defined by the RecommendedSeedLen // The recommended length is 32 (256 bits) as defined by the RecommendedSeedLen
// constant. // constant.
func GenerateSeed(length uint8) ([]byte, error) { func GenerateSeed(length uint8) ([]byte, error) {
// Per [BIP32], the seed must be in range [minSeedBytes, maxSeedBytes]. // Per [BIP32], the seed must be in range [MinSeedBytes, MaxSeedBytes].
if length < minSeedBytes || length > maxSeedBytes { if length < MinSeedBytes || length > MaxSeedBytes {
return nil, ErrInvalidSeedLen return nil, ErrInvalidSeedLen
} }