ARK-OS/arkos/vendor/verify/sha256.h

//
// Copyright 2026 Aarav Ravindra Kharade
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//

#ifndef SHA256_H
#define SHA256_H

#include <stddef.h>
#include <stdint.h>

#define SHA256_BLOCK_SIZE 32

typedef struct {
    uint8_t data[64];
    uint32_t datalen;
    unsigned long long bitlen;
    uint32_t state[8];
} SHA256_CTX;

void sha256_init(SHA256_CTX *ctx);
void sha256_update(SHA256_CTX *ctx, const uint8_t data[], size_t len);
void sha256_final(SHA256_CTX *ctx, uint8_t hash[]);

#endif