Verify a Signature with the Flow CLI
How to verify a signature from the command line
Verify validity of a signature based on provided message and public key of the signature creator.
flow signatures verify <message> <signature> <public key>
Example Usage
> flow signatures verify
'The quick brown fox jumps over the lazy dog'
b1c9eff5d829fdeaf2dad6308fc8033e3b8875bc185ef804ce5d0d980545ef5be0f98b47afc979d12272d257ce13c4b490e431bfcada485cb1d2e3f209be8d07
0xc92a7c72a78f8f046a79f8a5fe1ef72424258a55eb869f13e6133301d64ad025d3362d5df9e7c82289637af1431042c4025d241fd430242368ce662d39636987
Valid true
Message The quick brown fox jumps over the lazy dog
Signature b1c9eff5d829fdeaf2...7ce13c4b490eada485cb1d2e3f209be8d07
Public Key c92a7c72a78...1431042c4025d241fd430242368ce662d39636987
Hash Algorithm SHA3_256
Signature Algorithm ECDSA_P256
Arguments
Message
- Name:
message
Message data used for creating the signature.
Signature
- Name:
signature
Message signature that will be verified.
Public Key
- Name:
public key
Public key of the private key used for creating the signature.
Flags
Public Key Signature Algorithm
- Flag:
--sig-algo - Valid inputs:
"ECDSA_P256", "ECDSA_secp256k1"
Specify the ECDSA signature algorithm of the key pair used for signing.
Flow supports the secp256k1 and P-256 curves.
Public Key Hash Algorithm
- Flag:
--hash-algo - Valid inputs:
"SHA2_256", "SHA3_256" - Default:
"SHA3_256"
Specify the hash algorithm of the key pair used for signing.
Filter
- Flag:
--filter - Short Flag:
-x - Valid inputs: case-sensitive name of the result property.
Specify any property name from the result you want to return as the only value.
Output
- Flag:
--output - Short Flag:
-o - Valid inputs:
json,inline
Specify in which format you want to display the result.
Save
- Flag:
--save - Short Flag:
-s - Valid inputs: valid filename
Specify the filename where you want the result to be saved.
Log
- Flag:
--log - Short Flag:
-l - Valid inputs:
none,error,debug - Default:
info
Specify the log level. Control how much output you want to see while command execution.