src/crypto.h

#pragma once

#include <sframe/sframe.h>

namespace sframe {

size_t
cipher_digest_size(CipherSuite suite);
size_t
cipher_key_size(CipherSuite suite);
size_t
cipher_enc_key_size(CipherSuite suite);
size_t
cipher_nonce_size(CipherSuite suite);
size_t
cipher_overhead(CipherSuite suite);

///
/// HKDF
///

static constexpr size_t max_hkdf_extract_size = 64;
static constexpr size_t max_hkdf_expand_size = 64;

owned_bytes<max_hkdf_extract_size>
hkdf_extract(CipherSuite suite, input_bytes salt, input_bytes ikm);

owned_bytes<max_hkdf_expand_size>
hkdf_expand(CipherSuite suite, input_bytes prk, input_bytes info, size_t size);

///
/// AEAD Algorithms
///

output_bytes
seal(CipherSuite suite,
     input_bytes key,
     input_bytes nonce,
     output_bytes ct,
     input_bytes aad,
     input_bytes pt);

output_bytes
open(CipherSuite suite,
     input_bytes key,
     input_bytes nonce,
     output_bytes pt,
     input_bytes aad,
     input_bytes ct);

} // namespace sframe