48 lines
1.6 KiB
Crystal
48 lines
1.6 KiB
Crystal
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require "../src/sodium"
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# Use Password::Create to generate Key params
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# Or hard code them like below
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pwkey = Sodium::Password::Key.new
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# Uses MINIMUM to speed up this example. Don't use MINIMUM in real applications.
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# See examples/pw_hash_selector.cr for help on selecting parameters.
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pwkey.mem = Sodium::Password::MEMLIMIT_MIN
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pwkey.ops = Sodium::Password::OPSLIMIT_MIN
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pwkey.mode = Sodium::Password::Mode::Argon2id13
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# Save opslimit, memlimit, mode and master_key_size somewhere. They may be hard coded in your application.
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# SAVE salt per user. Every time the password changes also change the salt.
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salt = pwkey.random_salt
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password = "1234"
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# kdf_derive is a wrapper around following 3 lines.
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# kdf = Sodium::KDF.new master_key
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# master_key_size = 32 # Derive 256 bit key
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# master_key = pwkey.derive_key password, master_key_size, salt: salt
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kdf = pwkey.derive_kdf password, salt: salt
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# TODO: verify password
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xchacha = kdf.derive_aead_xchacha20poly1305_ietf "newwalle", 0
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# or secretbox = kdf.derive_secretbox "oldcrypt", 0
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# wallet = xchacha.decrypt File.read("blockchain.wallet")
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# Returns a Sign::SecretKey
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signkey = kdf.derive_sign "signatur", 0
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# Returns a CryptoBox::SecretKey
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secretkey = kdf.derive_cryptobox "pkcrypto", 0
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# anonymous_messages.each do |encrypted_message|
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# decrypted = secretkey.decrypt encrypted_message
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# inmessage = parse decrypted
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# signed_outmessage = signkey.sign wallet.transfer(message.recipient, message.amount, "Sure you can have free money")
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# secretkey.box inmessage.public_key do |box|
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# mail to: inmessage.email, data: box.encrypt(signed_outmessage)
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# end
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# end
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