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Generate Keys with the Flow CLI

How to generate a Flow account key-pair from the command line

The Flow CLI provides a command to generate ECDSA key pairs that can be attached to new or existing Flow accounts.

flow keys generate

Example Usage

> flow keys generate

Generating key pair with signature algorithm:                 ECDSA_P256
...
🔐 Private key (do not share with anyone):                    xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
🕊 Encoded public key (share freely):                         a69c6986e69fa1eadcd3bcb4aa51ee8aed74fc9430004af6b96f9e7d0e4891e84cfb99171846ba6d0354d195571397f5904cd319c3e01e96375d5777f1a47010

Options

Signature Algorithm

  • Flag: --algo,-a
  • Valid inputs: "ECDSA_P256", "ECDSA_secp256k1"
  • Default: "ECDSA_P256"

Specify the ECDSA signature algorithm for the key pair.

Flow supports the secp256k1 and P-256 curves.

Seed

  • Flag: --seed,s
  • Valid inputs: any string with length >= 32

Specify a UTF-8 seed string that will be used to generate the key pair. Key generation is deterministic, so the same seed will always result in the same key.

If no seed is specified, the key pair will be generated using a random 32 byte seed.