31 lines
1.2 KiB
Crystal
31 lines
1.2 KiB
Crystal
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require "./cox/*"
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require "secure_random"
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module Cox
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def self.encrypt(data, nonce : Nonce, recipient_public_key : PublicKey, sender_secret_key : SecretKey)
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data_buffer = data.to_slice
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data_size = data_buffer.bytesize
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output_buffer = Bytes.new(data_buffer.bytesize + LibSodium::MAC_BYTES)
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LibSodium.crypto_box_easy(output_buffer.to_unsafe, data_buffer, data_size, nonce.pointer, recipient_public_key.pointer, sender_secret_key.pointer)
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output_buffer
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end
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def self.encrypt(data, recipient_public_key : PublicKey, sender_secret_key : SecretKey)
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nonce = Nonce.new
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{nonce, encrypt(data, nonce, recipient_public_key, sender_secret_key)}
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end
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def self.decrypt(data, nonce : Nonce, sender_public_key : PublicKey, recipient_secret_key : SecretKey)
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data_buffer = data.to_slice
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data_size = data_buffer.bytesize
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output_buffer = Bytes.new(data_buffer.bytesize - LibSodium::MAC_BYTES)
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LibSodium.crypto_box_open_easy(output_buffer.to_unsafe, data_buffer.to_unsafe, data_size, nonce.pointer, sender_public_key.pointer, recipient_secret_key.pointer)
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output_buffer
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end
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end
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if Cox::LibSodium.sodium_init() == -1
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STDERR.puts("Failed to init libsodium")
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exit(1)
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end
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