1ee8deed2b
* crypto/keys/hd: use btcec to remove dep on tendermint * crypto/keys/bcrypt: improve comment about fork * crypto/keys/bip39 -> crypto/keys/bip39/fundraiser * crypto/keys/bip39: bring in fork of tyler-smith * crypto/keys/hd: update dep * crypto/keys: update deps * crypto/keys: move mintkey.go into new crypto/keys/mintkey * crypto/keys/hd: NewParamsFromPath * crypto/keys: keybase.Derive takes a bip39 passphrase too * crypto/keys/hd: BIP44Params.DerivationPath * gaiacli keys: add commands new and mnemonic * fix lints * minor fixes from review * update Gopkg.toml * add tendermint fork of golang.org/x/crypto * pin some transitive deps * crypto/keys/bcrypt: remove * remove in favour of fork of golang.org/x/crypto/bcrypt at github.com/tendermint/crypto/bcrypt * crypto/keys/bip39: remove completely * use fork cosmos/go-bip39 instead * Gopkg.toml: dont use master * Pull in changes from my PR * fixes from review * enforce min len for --unsafe-entropy * lint fix * feedback from review * fix dep
79 lines
1.9 KiB
Go
79 lines
1.9 KiB
Go
package keys
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import (
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"crypto/sha256"
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"fmt"
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"github.com/cosmos/cosmos-sdk/client"
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"github.com/spf13/cobra"
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bip39 "github.com/bartekn/go-bip39"
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)
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const (
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flagUserEntropy = "unsafe-entropy"
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mnemonicEntropySize = 256
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)
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func mnemonicKeyCommand() *cobra.Command {
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cmd := &cobra.Command{
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Use: "mnemonic",
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Short: "Compute the bip39 mnemonic for some input entropy",
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Long: "Create a bip39 mnemonic, sometimes called a seed phrase, by reading from the system entropy. To pass your own entropy, use --unsafe-entropy",
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RunE: runMnemonicCmd,
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}
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cmd.Flags().Bool(flagUserEntropy, false, "Prompt the user to supply their own entropy, instead of relying on the system")
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return cmd
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}
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func runMnemonicCmd(cmd *cobra.Command, args []string) error {
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flags := cmd.Flags()
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userEntropy, _ := flags.GetBool(flagUserEntropy)
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var entropySeed []byte
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if userEntropy {
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// prompt the user to enter some entropy
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buf := client.BufferStdin()
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inputEntropy, err := client.GetString("> WARNING: Generate at least 256-bits of entropy and enter the results here:", buf)
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if err != nil {
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return err
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}
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if len(inputEntropy) < 43 {
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return fmt.Errorf("256-bits is 43 characters in Base-64, and 100 in Base-6. You entered %v, and probably want more", len(inputEntropy))
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}
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conf, err := client.GetConfirmation(
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fmt.Sprintf("> Input length: %d", len(inputEntropy)),
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buf)
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if err != nil {
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return err
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}
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if !conf {
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return nil
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}
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// hash input entropy to get entropy seed
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hashedEntropy := sha256.Sum256([]byte(inputEntropy))
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entropySeed = hashedEntropy[:]
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printStep()
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} else {
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// read entropy seed straight from crypto.Rand
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var err error
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entropySeed, err = bip39.NewEntropy(mnemonicEntropySize)
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if err != nil {
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return err
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}
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}
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mnemonic, err := bip39.NewMnemonic(entropySeed[:])
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if err != nil {
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return err
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}
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fmt.Println(mnemonic)
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return nil
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}
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