Lucas Gabriel Vuotto
5c1325ed11
Decouple the authentication tag from the ciphertext and add streaming interfaces. Tests will be fixed in the next commit.
110 lines
2.9 KiB
C
110 lines
2.9 KiB
C
/*
|
|
* Copyright (c) 2024 Lucas Gabriel Vuotto <lucas@lgv5.net>
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*/
|
|
|
|
#include <stdlib.h>
|
|
|
|
#include "internal.h"
|
|
|
|
|
|
int
|
|
lc_aead_seal_init(struct lc_aead_ctx *ctx, void *initparams)
|
|
{
|
|
return ctx->impl->seal_init(ctx->arg, initparams);
|
|
}
|
|
|
|
int
|
|
lc_aead_seal_update(struct lc_aead_ctx *ctx, uint8_t *out, size_t *outlen,
|
|
const uint8_t *aad, size_t aadlen, const uint8_t *in, size_t inlen)
|
|
{
|
|
return ctx->impl->seal_update(ctx->arg, out, outlen, aad, aadlen, in,
|
|
inlen);
|
|
}
|
|
|
|
int
|
|
lc_aead_seal_final(struct lc_aead_ctx *ctx, uint8_t *out, size_t *outlen,
|
|
uint8_t *tag, size_t *taglen)
|
|
{
|
|
return ctx->impl->seal_final(ctx->arg, out, outlen, tag, taglen);
|
|
}
|
|
|
|
int
|
|
lc_aead_seal(const struct lc_aead_impl *impl, uint8_t *out, size_t *outlen,
|
|
uint8_t *tag, size_t *taglen, void *initparams, const uint8_t *aad,
|
|
size_t aadlen, const uint8_t *in, size_t inlen)
|
|
{
|
|
return impl->seal(out, outlen, tag, taglen, initparams, aad, aadlen,
|
|
in, inlen);
|
|
}
|
|
|
|
int
|
|
lc_aead_open_init(struct lc_aead_ctx *ctx, void *initparams)
|
|
{
|
|
return ctx->impl->open_init(ctx->arg, initparams);
|
|
}
|
|
|
|
int
|
|
lc_aead_open_update(struct lc_aead_ctx *ctx, uint8_t *out, size_t *outlen,
|
|
const uint8_t *aad, size_t aadlen, const uint8_t *in, size_t inlen)
|
|
{
|
|
return ctx->impl->open_update(ctx->arg, out, outlen, aad, aadlen, in,
|
|
inlen);
|
|
}
|
|
|
|
int
|
|
lc_aead_open_final(struct lc_aead_ctx *ctx, uint8_t *out, size_t *outlen,
|
|
const uint8_t *tag, size_t taglen)
|
|
{
|
|
return ctx->impl->open_final(ctx->arg, out, outlen, tag, taglen);
|
|
}
|
|
|
|
int
|
|
lc_aead_open(const struct lc_aead_impl *impl, uint8_t *out, size_t *outlen,
|
|
void *initparams, const uint8_t *tag, size_t taglen, const uint8_t *aad,
|
|
size_t aadlen, const uint8_t *in, size_t inlen)
|
|
{
|
|
return impl->open(out, outlen, initparams, tag, taglen, aad, aadlen,
|
|
in, inlen);
|
|
}
|
|
|
|
struct lc_aead_ctx *
|
|
lc_aead_ctx_new(const struct lc_aead_impl *impl)
|
|
{
|
|
struct lc_aead_ctx *ctx;
|
|
|
|
ctx = malloc(sizeof(*ctx));
|
|
if (ctx == NULL)
|
|
return NULL;
|
|
if (impl->argsz > 0) {
|
|
ctx->arg = malloc(impl->argsz);
|
|
if (ctx->arg == NULL) {
|
|
free(ctx);
|
|
return NULL;
|
|
}
|
|
} else
|
|
ctx->arg = NULL;
|
|
ctx->impl = impl;
|
|
|
|
return ctx;
|
|
}
|
|
|
|
void
|
|
lc_aead_ctx_free(struct lc_aead_ctx *ctx)
|
|
{
|
|
if (ctx != NULL)
|
|
free(ctx->arg);
|
|
free(ctx);
|
|
}
|