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Nacl xsalsa20 Encryption & Decryption

A Playgroud for nacl Secret-key encryption: crypto_stream: xsalsa20_xor

The crypto_stream_xor function guarantees that the ciphertext has the same length as the plaintext, and is the plaintext xor the output of crypto_stream. Consequently crypto_stream_xor can also be used to decrypt

Encrypt

Decrypt

Nonce (24 bit) in Hex

Key (32 bit) in Hex

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Secret-key encryption: crypto_stream

The crypto_stream_xor function encrypts a message m using a secret key k and a nonce n

NaCl does not make any promises regarding the resistance of crypto_stream to "related-key attacks." It is the caller's responsibility to use proper key-derivation functions.

NaCl supports the following secret-key encryption functions:

crypto_stream	Primitive	KEYBYTES	NONCEBYTES
crypto_stream_aes128ctr	AES-128-CTR	16	16
[TO DO:] crypto_stream_aes256ctr	AES-256-CTR	32	16
crypto_stream_salsa208	Salsa20/8	32	8
crypto_stream_salsa2012	Salsa20/12	32	8
crypto_stream_salsa20	Salsa20/20	32	8
crypto_stream_xsalsa20	XSalsa20/20	32	24

Learn more about Nacl cryptography