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I tried the following code, using method generate.
https://paritytech.github.io/substrate/master/sp_core/crypto/trait.Pair.html#method.generate
use sp_core::{
sr25519,
ed25519,
Pair,
};
use std::str;
fn main() {
let pair_seed = <sp_core::ed25519::Pair as Pair>::generate();
let (pair, seed) = pair_seed;
println!("{:?}", str::from_utf8(&seed).unwrap());
}
Not sure seed is the mnemonic phrase. How to get the mnemonic phrase?
The generate method generates a new random keypair and does not accept a seed as input. If you want to generate a new account with a specific seed, you can use the from_seed method instead.
use sp_core::{sr25519, ed25519, Pair};
fn main() {
let mnemonic_phrase = "word1 word2 word3 word4 word5 word6 word7 word8 word9 word10 word11 word12";
let seed = sp_core::ed25519::Seed::from_phrase(mnemonic_phrase, "")
.expect("Invalid mnemonic phrase");
let pair = <sp_core::ed25519::Pair as Pair>::from_seed(&seed);
println!("{:?}", pair);
}
This will generate a new account using the given seed, which should be a 12-word mnemonic phrase.
Note that the Seed type is specific to the ed25519 implementation of the Pair trait, so you may need to use a different type if you are using a different curve (e.g. sr25519::Seed for the sr25519 curve).
