96 lines
2.7 KiB
C
96 lines
2.7 KiB
C
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/* MIT License
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*
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* Copyright (c) 2016-2017 INRIA and Microsoft Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "kremlib.h"
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#ifndef __Hacl_Chacha20_H
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#define __Hacl_Chacha20_H
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typedef uint32_t Hacl_Impl_Xor_Lemmas_u32;
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typedef uint8_t Hacl_Impl_Xor_Lemmas_u8;
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typedef uint8_t *Hacl_Lib_LoadStore32_uint8_p;
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typedef uint32_t Hacl_Impl_Chacha20_u32;
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typedef uint32_t Hacl_Impl_Chacha20_h32;
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typedef uint8_t *Hacl_Impl_Chacha20_uint8_p;
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typedef uint32_t *Hacl_Impl_Chacha20_state;
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typedef uint32_t Hacl_Impl_Chacha20_idx;
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typedef struct
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{
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void *k;
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void *n;
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}
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Hacl_Impl_Chacha20_log_t_;
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typedef void *Hacl_Impl_Chacha20_log_t;
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typedef uint32_t Hacl_Lib_Create_h32;
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typedef uint8_t *Hacl_Chacha20_uint8_p;
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typedef uint32_t Hacl_Chacha20_uint32_t;
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void Hacl_Chacha20_chacha20_key_block(uint8_t *block, uint8_t *k, uint8_t *n1, uint32_t ctr);
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/*
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This function implements Chacha20
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val chacha20 :
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output:uint8_p ->
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plain:uint8_p{ disjoint output plain } ->
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len:uint32_t{ v len = length output /\ v len = length plain } ->
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key:uint8_p{ length key = 32 } ->
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nonce:uint8_p{ length nonce = 12 } ->
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ctr:uint32_t{ v ctr + length plain / 64 < pow2 32 } ->
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Stack unit
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(requires
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fun h -> live h output /\ live h plain /\ live h nonce /\ live h key)
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(ensures
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fun h0 _ h1 ->
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live h1 output /\ live h0 plain /\ modifies_1 output h0 h1 /\
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live h0 nonce /\
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live h0 key /\
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h1.[ output ] ==
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chacha20_encrypt_bytes h0.[ key ] h0.[ nonce ] (v ctr) h0.[ plain ])
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*/
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void
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Hacl_Chacha20_chacha20(
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uint8_t *output,
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uint8_t *plain,
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uint32_t len,
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uint8_t *k,
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uint8_t *n1,
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uint32_t ctr
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);
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#endif
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