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GHC 9.14.1 · lts/ghc-9.14.x · d82dee8 · 2026-10-12

Moduleweb3-crypto-1.1.0.0Haskell2010

Crypto.Ethereum.Keyfile

Ethereum Secret Storage implementation. Spec https://github.com/ethereum/wiki/wiki/Web3-Secret-Storage-Definition.

3 types
2 values

Packageweb3-crypto-1.1.0.0
Exports5
LanguageHaskell2010
LicenceApache-2.0
SourceKeyfile.hs

Encrypted Ethereum private key

3 declarations

datadata EncryptedKey

Secret Storage representation on memory.

Constructors

EncryptedKey
- encryptedKeyId :: !UUID
  Random key ID
- encryptedKeyVersion :: !Int
  Version (suppoted version 3 only)
- encryptedKeyCipher :: !Cipher
  Cipher (supported AES-128-CTR only)
- encryptedKeyKdf :: !Kdf
  Key derivation function
- encryptedKeyMac :: !HexString
  MAC

Instances4Eq, Show, FromJSON, ToJSON

Eq EncryptedKeyDefined in web3-crypto-1.1.0.0 · Crypto.Ethereum.Keyfile
Show EncryptedKeyDefined in web3-crypto-1.1.0.0 · Crypto.Ethereum.Keyfile
FromJSON EncryptedKeyDefined in web3-crypto-1.1.0.0 · Crypto.Ethereum.Keyfile
ToJSON EncryptedKeyDefined in web3-crypto-1.1.0.0 · Crypto.Ethereum.Keyfile

datadata Cipher

Cipher parameters.

Constructors

Aes128Ctr
- cipherIv :: !IV AES128
- cipherText :: !HexString

datadata Kdf

Key derivation function parameters and salt.

Constructors

Pbkdf2 !Parameters !HexString
Scrypt !Parameters !HexString

Secret storage packers

2 declarations

valuedecrypt

:: (ByteArrayAccess password, ByteArray privateKey)
=> EncryptedKey
-> password
-> Maybe privateKey

Decrypt Ethereum private key.

Typically Web3 Secret Storage is JSON-encoded. EncryptedKey data type has FromJSON instance to helps decode it from JSON-encoded string or file.

  let decryptJSON pass = flip decrypt pass <=< decode

valueencrypt

:: (ByteArray privateKey, ByteArrayAccess password, MonadRandom m)
=> privateKey
-> password
-> m EncryptedKey

Encrypt Ethereum private key.

  let encryptJSON pass key = encode $ encrypt key pass