This is a very simple wrapper around libsodium masquerading as nacl.

[![Build Status](https://travis-ci.org/stef/pysodium.svg?branch=master)](https://travis-ci.org/stef/pysodium)

This wrapper requires a pre-installed libsodium from:

   https://github.com/jedisct1/libsodium

then it provides access to the following functions:

```
crypto_aead_aegis128l_decrypt(ciphertext, ad, nonce, key)
crypto_aead_aegis128l_encrypt(message, ad, nonce, key)
crypto_aead_aegis128l_decrypt_detached(ciphertext, mac, ad, nonce, key)
crypto_aead_aegis128l_encrypt_detached(message, ad, nonce, key)
crypto_aead_aegis256_decrypt(ciphertext, ad, nonce, key)
crypto_aead_aegis256_encrypt(message, ad, nonce, key)
crypto_aead_aegis256_decrypt_detached(ciphertext, mac, ad, nonce, key)
crypto_aead_aegis256_encrypt_detached(message, ad, nonce, key)
crypto_aead_chacha20poly1305_decrypt(ciphertext, ad, nonce, key)
crypto_aead_chacha20poly1305_encrypt(message, ad, nonce, key)
crypto_aead_chacha20poly1305_decrypt_detached(ciphertext, mac, ad, nonce, key)
crypto_aead_chacha20poly1305_encrypt_detached(message, ad, nonce, key)
crypto_aead_chacha20poly1305_ietf_decrypt(ciphertext, ad, nonce, key)
crypto_aead_chacha20poly1305_ietf_encrypt(message, ad, nonce, key)
crypto_aead_chacha20poly1305_ietf_decrypt_detached(ciphertext, mac, ad, nonce, key)
crypto_aead_chacha20poly1305_ietf_encrypt_detached(message, ad, nonce, key)
crypto_aead_xchacha20poly1305_ietf_decrypt(ciphertext, ad, nonce, key)
crypto_aead_xchacha20poly1305_ietf_encrypt(message, ad, nonce, key)
crypto_auth(message, key)
crypto_auth_verify(tag, message, key)
crypto_box_afternm(msg, nonce, k)
crypto_box_beforenm(pk, sk)
crypto_box_detached(msg, nonce, pk, sk)
crypto_box_keypair()
crypto_box(msg, nonce, pk, sk)
crypto_box_open_afternm(c, nonce, k)
crypto_box_open(c, nonce, pk, sk)
crypto_box_open_detached(c, mac, nonce, pk, sk)
crypto_box_seal(msg, pk)
crypto_box_seal_open(c, pk, sk)
crypto_box_seed_keypair(seed)
crypto_generichash_blake2b_salt_personal(message, outlen = crypto_generichash_blake2b_BYTES, key = b'', salt = b'', personal = b'')
crypto_generichash_final(state, outlen=crypto_generichash_BYTES)
crypto_generichash_init(outlen=crypto_generichash_BYTES, k=b'')
crypto_generichash(m, k=b'', outlen=crypto_generichash_BYTES)
crypto_generichash_update(state, m)
crypto_hash_sha256(message)
crypto_hash_sha512(message)
crypto_hash_sha512_init()
crypto_hash_sha512_update(state, data)
crypto_hash_sha512_final(state)
crypto_kx_client_session_keys(client_pk, client_sk, server_pk)
crypto_kx_keypair()
crypto_kx_server_session_keys(server_pk, server_sk, client_pk)
crypto_pwhash(outlen, passwd, salt, opslimit, memlimit, alg)
crypto_pwhash_scryptsalsa208sha256(outlen, passwd, salt, opslimit, memlimit)
crypto_pwhash_scryptsalsa208sha256_str(passwd, opslimit, memlimit)
crypto_pwhash_scryptsalsa208sha256_str_verify(stored, passwd)
crypto_pwhash_str(passwd, opslimit, memlimit)
crypto_pwhash_str_verify(pstr, passwd)
crypto_scalarmult_base(n)
crypto_scalarmult_curve25519_base(n)
crypto_scalarmult_curve25519(n, p)
crypto_secretbox(msg, nonce, k)
crypto_secretbox_detached(msg, nonce, k)
crypto_secretbox_open(c, nonce, k)
crypto_secretbox_open_detached(c, mac, nonce, k)
crypto_secretstream_xchacha20poly1305_keygen():
crypto_secretstream_xchacha20poly1305_init_push(key):
crypto_secretstream_xchacha20poly1305_init_pull(header, key):
crypto_secretstream_xchacha20poly1305_rekey(state):
crypto_secretstream_xchacha20poly1305_push(state, message, ad, tag):
crypto_secretstream_xchacha20poly1305_pull(state, ciphertext, ad):
crypto_sign_init()
crypto_sign_update(state, m)
crypto_sign_final_create(state, sk)
crypto_sign_final_verify(state, sig, pk)
crypto_sign_detached(m, sk)
crypto_sign_keypair()
crypto_sign(m, sk)
crypto_sign_open(sm, pk)
crypto_sign_pk_to_box_pk(pk)
crypto_sign_seed_keypair(seed)
crypto_sign_sk_to_box_sk(sk)
crypto_sign_sk_to_pk(sk)
crypto_sign_sk_to_seed(sk)
crypto_sign_verify_detached(sig, msg, pk)
crypto_stream_chacha20_xor(message, nonce, key)
crypto_stream_chacha20_xor_ic(message, nonce, initial_counter, key)
crypto_stream_chacha20_ietf_xor(message, nonce, key)
crypto_stream_chacha20_ietf_xor_ic(message, nonce, initial_counter, key)
crypto_stream_xchacha20_xor(message, nonce, key)
crypto_stream_xchacha20_xor_ic(message, nonce, initial_counter, key)
crypto_stream(cnt, nonce=None, key=None)
crypto_stream_xor(msg, cnt, nonce=None, key=None)
randombytes(size)
sodium_increment(bytes)
crypto_core_ristretto255_is_valid_point(p)
crypto_core_ristretto255_from_hash(r)
crypto_scalarmult_ristretto255(n, p)
crypto_scalarmult_ristretto255_base(n)
crypto_core_ristretto255_scalar_random()
crypto_core_ristretto255_scalar_invert(s)
crypto_core_ristretto255_scalar_reduce(s)
crypto_core_ristretto255_add(p, q)
crypto_core_ristretto255_sub(p,q)
crypto_core_ristretto255_random()
crypto_core_ristretto255_scalar_negate(s)
crypto_core_ristretto255_scalar_complement(s)
crypto_core_ristretto255_scalar_add(x,y)
crypto_core_ristretto255_scalar_sub(x,y)
crypto_core_ristretto255_scalar_mul(x,y)
crypto_auth_hmacsha256_keygen
crypto_auth_hmacsha256
crypto_auth_hmacsha256_verify
crypto_auth_hmacsha512_keygen
crypto_auth_hmacsha512
crypto_auth_hmacsha512_verify
crypto_auth_hmacsha512256_keygen
crypto_auth_hmacsha512256
crypto_auth_hmacsha512256_verify
crypto_kdf_derive_from_key(subkey_len, subkey_id, ctx, key)
crypto_kdf_keygen()
crypto_kdf_hkdf_sha256_extract_init(salt=b'')
crypto_kdf_hkdf_sha256_extract_update(state, ikm=b'')
crypto_kdf_hkdf_sha256_extract_final(state)
crypto_kdf_hkdf_sha256_extract(salt=b'', ikm=b'')
crypto_kdf_hkdf_sha256_keygen()
crypto_kdf_hkdf_sha256_expand(outlen, prk, ctx=b'')
crypto_kdf_hkdf_sha512_extract_init(salt=b'')
crypto_kdf_hkdf_sha512_extract_update(state, ikm=b'')
crypto_kdf_hkdf_sha512_extract_final(state)
crypto_kdf_hkdf_sha512_extract(salt=b'', ikm=b'')
crypto_kdf_hkdf_sha512_keygen()
crypto_kdf_hkdf_sha512_expand(outlen, prk, ctx=b'')
```

Constants:

```
crypto_aead_chacha20poly1305_ABYTES
crypto_aead_chacha20poly1305_KEYBYTES
crypto_aead_chacha20poly1305_NPUBBYTES
crypto_aead_chacha20poly1305_ietf_KEYBYTES
crypto_aead_chacha20poly1305_ietf_NPUBBYTES
crypto_aead_chacha20poly1305_ietf_ABYTES
crypto_aead_xchacha20poly1305_ietf_KEYBYTES
crypto_aead_xchacha20poly1305_ietf_NPUBBYTES
crypto_aead_xchacha20poly1305_ietf_ABYTES
crypto_auth_BYTES
crypto_auth_KEYBYTES
crypto_box_BEFORENMBYTES
crypto_box_BOXZEROBYTES
crypto_box_MACBYTES
crypto_box_NONCEBYTES
crypto_box_PUBLICKEYBYTES
crypto_box_SEALBYTES
crypto_box_SECRETKEYBYTES
crypto_box_SEEDBYTES
crypto_box_ZEROBYTES
crypto_generichash_KEYBYTES_MAX
crypto_generichash_BYTES
crypto_generichash_BYTES_MAX
crypto_generichash_BYTES_MIN
crypto_generichash_STATEBYTES
crypto_generichash_blake2b_BYTES
crypto_generichash_blake2b_BYTES_MAX
crypto_generichash_blake2b_BYTES_MIN
crypto_generichash_blake2b_KEYBYTES_MAX
crypto_generichash_blake2b_PERSONALBYTES
crypto_generichash_blake2b_SALTBYTES
crypto_hash_sha256_BYTES
crypto_hash_sha512_BYTES
crypto_hash_sha512_STATEBYTES
crypto_kx_PUBLICKEYBYTES
crypto_kx_SECRETKEYBYTES
crypto_kx_SESSIONKEYBYTES
crypto_pwhash_ALG_DEFAULT
crypto_pwhash_ALG_ARGON2I13
crypto_pwhash_ALG_ARGON2ID13
crypto_pwhash_BYTES_MAX
crypto_pwhash_BYTES_MIN
crypto_pwhash_MEMLIMIT_MAX
crypto_pwhash_MEMLIMIT_MIN
crypto_pwhash_MEMLIMIT_INTERACTIVE
crypto_pwhash_MEMLIMIT_MODERATE
crypto_pwhash_MEMLIMIT_SENSITIVE
crypto_pwhash_OPSLIMIT_MAX
crypto_pwhash_OPSLIMIT_MIN
crypto_pwhash_OPSLIMIT_INTERACTIVE
crypto_pwhash_OPSLIMIT_MODERATE
crypto_pwhash_OPSLIMIT_SENSITIVE
crypto_pwhash_PASSWD_MAX
crypto_pwhash_PASSWD_MIN
crypto_pwhash_argon2i_MEMLIMIT_INTERACTIVE
crypto_pwhash_argon2i_MEMLIMIT_MODERATE
crypto_pwhash_argon2i_MEMLIMIT_SENSITIVE
crypto_pwhash_argon2i_OPSLIMIT_INTERACTIVE
crypto_pwhash_argon2i_OPSLIMIT_MODERATE
crypto_pwhash_argon2i_OPSLIMIT_SENSITIVE
crypto_pwhash_argon2id_MEMLIMIT_INTERACTIVE
crypto_pwhash_argon2id_MEMLIMIT_MODERATE
crypto_pwhash_argon2id_MEMLIMIT_SENSITIVE
crypto_pwhash_argon2id_OPSLIMIT_INTERACTIVE
crypto_pwhash_argon2id_OPSLIMIT_MODERATE
crypto_pwhash_argon2id_OPSLIMIT_SENSITIVE
crypto_pwhash_SALTBYTES
crypto_pwhash_STRBYTES
crypto_pwhash_scryptsalsa208sha256_BYTES_MAX
crypto_pwhash_scryptsalsa208sha256_BYTES_MIN
crypto_pwhash_scryptsalsa208sha256_MEMLIMIT_MAX
crypto_pwhash_scryptsalsa208sha256_MEMLIMIT_MIN
crypto_pwhash_scryptsalsa208sha256_MEMLIMIT_INTERACTIVE
crypto_pwhash_scryptsalsa208sha256_MEMLIMIT_SENSITIVE
crypto_pwhash_scryptsalsa208sha256_OPSLIMIT_MAX
crypto_pwhash_scryptsalsa208sha256_OPSLIMIT_MIN
crypto_pwhash_scryptsalsa208sha256_OPSLIMIT_INTERACTIVE
crypto_pwhash_scryptsalsa208sha256_OPSLIMIT_SENSITIVE
crypto_pwhash_scryptsalsa208sha256_PASSWD_MAX
crypto_pwhash_scryptsalsa208sha256_PASSWD_MIN
crypto_pwhash_scryptsalsa208sha256_SALTBYTES
crypto_pwhash_scryptsalsa208sha256_STRBYTES
crypto_pwhash_scryptsalsa208sha256_STRPREFIX
crypto_scalarmult_BYTES
crypto_scalarmult_SCALARBYTES
crypto_scalarmult_curve25519_BYTES
crypto_secretbox_BOXZEROBYTES
crypto_secretbox_KEYBYTES
crypto_secretbox_KEYBYTES
crypto_secretbox_MACBYTES
crypto_secretbox_NONCEBYTES
crypto_secretbox_ZEROBYTES
crypto_secretstream_xchacha20poly1305_STATEBYTES
crypto_secretstream_xchacha20poly1305_ABYTES
crypto_secretstream_xchacha20poly1305_HEADERBYTES
crypto_secretstream_xchacha20poly1305_KEYBYTES
crypto_secretstream_xchacha20poly1305_MESSAGEBYTES_MAX
crypto_secretstream_xchacha20poly1305_TAG_MESSAGE
crypto_secretstream_xchacha20poly1305_TAG_PUSH
crypto_secretstream_xchacha20poly1305_TAG_REKEY
crypto_secretstream_xchacha20poly1305_TAG_FINAL
crypto_sign_BYTES
crypto_sign_PUBLICKEYBYTES
crypto_sign_SECRETKEYBYTES
crypto_sign_SEEDBYTES
crypto_sign_ed25519_PUBLICKEYBYTES
crypto_sign_ed25519_SECRETKEYBYTES
crypto_stream_KEYBYTES
crypto_stream_NONCEBYTES
crypto_stream_chacha20_NONCEBYTES
crypto_stream_chacha20_KEYBYTES
crypto_stream_chacha20_ietf_NONCEBYTES
crypto_stream_chacha20_ietf_KEYBYTES
crypto_stream_xchacha20_NONCEBYTES
crypto_stream_xchacha20_KEYBYTES
crypto_core_ristretto255_BYTES
crypto_core_ristretto255_HASHBYTES
crypto_core_ristretto255_SCALARBYTES
crypto_core_ristretto255_NONREDUCEDSCALARBYTES
crypto_auth_hmacsha256_BYTES
crypto_auth_hmacsha256_KEYBYTES
crypto_auth_hmacsha512_BYTES
crypto_auth_hmacsha512_KEYBYTES
crypto_auth_hmacsha512256_BYTES
crypto_auth_hmacsha512256_KEYBYTES
crypto_kdf_BYTES_MIN
crypto_kdf_BYTES_MAX
crypto_kdf_CONTEXTBYTES
crypto_kdf_KEYBYTES
crypto_kdf_hkdf_sha256_KEYBYTES
crypto_kdf_hkdf_sha256_BYTES_MIN
crypto_kdf_hkdf_sha256_BYTES_MAX
crypto_kdf_hkdf_sha256_STATEBYTES
```



Note

most of the the `*_easy` functions are not implemented as the "non-easy"
functions provide already the "easy" interface, which hides the placement of
buffers in memory, which makes little sense in python, so this wrapper handles
this.