crypto_box_curve25519xsalsa20poly1305
, a particular
combination of Curve25519, Salsa20, and Poly1305 specified in
Cryptography in NaCl
.
This function is conjectured to meet the standard notions of privacy and
third-party unforgeability.
Nonce | Nonce for asymmetric authenticated encryption
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PrecomputedKey | Applications that send several messages to the same receiver can gain speed by
splitting seal() into two steps, precompute() and seal_precomputed() .
Similarly, applications that receive several messages from the same sender can gain
speed by splitting open() into two steps, precompute() and open_precomputed() .
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PublicKey | PublicKey for asymmetric authenticated encryption
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SecretKey | SecretKey for asymmetric authenticated encryption
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Seed | Seed that can be used for keypair generation
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Tag | Authentication Tag for the detached encryption mode
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MACBYTES | Number of bytes in the authenticator tag of an encrypted message
i.e. the number of bytes by which the ciphertext is larger than the
plaintext.
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NONCEBYTES | Number of bytes in a Nonce .
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PRECOMPUTEDKEYBYTES | Number of bytes in a PrecomputedKey .
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PUBLICKEYBYTES | Number of bytes in a PublicKey .
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SECRETKEYBYTES | Number of bytes in a SecretKey .
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SEEDBYTES | Number of bytes in a Seed .
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gen_keypair | gen_keypair() randomly generates a secret key and a corresponding public key.
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gen_nonce | gen_nonce() randomly generates a nonce
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keypair_from_seed | key_pair_from_seed() deterministically derives a key pair from a single key seed (crypto_box_SEEDBYTES bytes).
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open | open() verifies and decrypts a ciphertext c using the receiver's secret key sk ,
the senders public key pk , and a nonce n . It returns a plaintext Ok(m) .
If the ciphertext fails verification, open() returns Err(()) .
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open_detached | open_detached() verifies and decrypts a ciphertext c using the receiver's secret key sk ,
the senders public key pk , and a nonce n . c is decrypted in place, so if this function is
successful it will contain the plaintext. If the ciphertext fails verification,
open_detached() returns Err(()) , and the ciphertext is not modified.
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open_detached_precomputed | open_detached_precomputed() verifies and decrypts a ciphertext c using a precomputed key
k and a nonce n . c is decrypted in place, so if this function is successful it will
contain the plaintext. If the ciphertext fails verification, open_detached() returns
Err(()) , and the ciphertext is not modified.
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open_precomputed | open_precomputed() verifies and decrypts a ciphertext c using a precomputed
key k and a nonce n . It returns a plaintext Ok(m) .
If the ciphertext fails verification, open_precomputed() returns Err(()) .
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precompute | precompute() computes an intermediate key that can be used by seal_precomputed()
and open_precomputed()
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seal | seal() encrypts and authenticates a message m using the senders secret key sk ,
the receivers public key pk and a nonce n . It returns a ciphertext c .
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seal_detached | seal_detached() encrypts and authenticates a message m using the senders secret key sk ,
the receivers public key pk and a nonce n . m is encrypted in place, so after this
function returns it will contain the ciphertext. The detached authentication tag is returned by
value.
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seal_detached_precomputed | seal_detached_precomputed() encrypts and authenticates a message m using a precomputed key
k and a nonce n . m is encrypted in place, so after this function returns it will contain
the ciphertext. The detached authentication tag is returned by value.
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seal_precomputed | seal_precomputed() encrypts and authenticates a message m using a precomputed key k ,
and a nonce n . It returns a ciphertext c .
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