Module: Privy::WalletEntropy

Defined in:
lib/privy/wallet_entropy.rb

Constant Summary collapse

SECP256K1_ORDER = 
0xfffffffffffffffffffffffffffffffebaaedce6af48a03bbfd25e8cd0364141

Class Method Summary collapse

Class Method Details

.entropy_to_bytes(entropy:, entropy_type:, chain_type:) ⇒ Object 



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# File 'lib/privy/wallet_entropy.rb', line 11

def entropy_to_bytes(entropy:, entropy_type:, chain_type:)
  case entropy_type.to_s
  when "hd"
    entropy.to_s.encode(Encoding::UTF_8).b
  when "private-key"
    private_key_to_bytes(entropy.to_s, chain_type.to_s)
  else
    raise Privy::Errors::Error, "Invalid entropy type: #{entropy_type}"
  end
end

.ethereum_private_key_to_bytes(entropy) ⇒ Object 



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# File 'lib/privy/wallet_entropy.rb', line 33

def ethereum_private_key_to_bytes(entropy)
  hex = entropy.start_with?("0x") ? entropy[2..] : entropy
  unless hex.match?(/\A[0-9a-fA-F]{64}\z/)
    raise Privy::Errors::Error,
          "Invalid private key: Ethereum entropy must be 64 hex characters (32 bytes)"
  end

  scalar = hex.to_i(16)
  if scalar.zero? || scalar >= SECP256K1_ORDER
    raise Privy::Errors::Error,
          "Invalid private key: Ethereum entropy must be in range [1, secp256k1 order)"
  end

  [hex].pack("H*")
end

.private_key_to_bytes(entropy, chain_type) ⇒ Object 



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# File 'lib/privy/wallet_entropy.rb', line 22

def private_key_to_bytes(entropy, chain_type)
  case chain_type
  when "ethereum"
    ethereum_private_key_to_bytes(entropy)
  when "solana"
    solana_private_key_to_bytes(entropy)
  else
    raise Privy::Errors::Error, "Invalid chain type for imports: #{chain_type}"
  end
end

.solana_private_key_to_bytes(entropy) ⇒ Object 



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# File 'lib/privy/wallet_entropy.rb', line 49

def solana_private_key_to_bytes(entropy)
  if entropy.empty?
    raise Privy::Errors::Error,
          "Invalid private key: Solana entropy must be base58 encoded"
  end

  Privy::Base58.decode(entropy)
rescue ArgumentError
  raise Privy::Errors::Error, "Invalid private key: Solana entropy must be base58 encoded"
end