xref: /isa-l_crypto/mh_sha256/mh_sha256_update_base.c (revision f6da0bf48af4a49143c2bd4ecaa976ae453273d6)

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/*
 * mh_sha256_update_base.c contains the prototype of mh_sha256_update_XXX.
 * Default definitions are base type which generates mh_sha256_update_base.
 * Other types are generated through different predefined macros by mh_sha256.c.
 */
#ifndef MH_SHA256_UPDATE_FUNCTION
#include "mh_sha256_internal.h"
#include <string.h>

#define MH_SHA256_UPDATE_FUNCTION _mh_sha256_update_base
#define MH_SHA256_BLOCK_FUNCTION  _mh_sha256_block_base
#define MH_SHA256_UPDATE_SLVER
#endif

int
MH_SHA256_UPDATE_FUNCTION(struct isal_mh_sha256_ctx *ctx, const void *buffer, uint32_t len)
{

        uint8_t *partial_block_buffer;
        uint32_t partial_block_len;
        uint32_t num_blocks;
        uint32_t(*mh_sha256_segs_digests)[ISAL_HASH_SEGS];
        uint8_t *aligned_frame_buffer;
        const uint8_t *input_data = (const uint8_t *) buffer;

        if (ctx == NULL)
                return ISAL_MH_SHA256_CTX_ERROR_NULL;

        if (len == 0)
                return ISAL_MH_SHA256_CTX_ERROR_NONE;

        partial_block_len = ctx->total_length % ISAL_MH_SHA256_BLOCK_SIZE;
        partial_block_buffer = ctx->partial_block_buffer;
        aligned_frame_buffer = (uint8_t *) ALIGN_64(ctx->frame_buffer);
        mh_sha256_segs_digests = (uint32_t(*)[ISAL_HASH_SEGS]) ctx->mh_sha256_interim_digests;

        ctx->total_length += len;
        // No enough input data for mh_sha256 calculation
        if (len + partial_block_len < ISAL_MH_SHA256_BLOCK_SIZE) {
                memcpy(partial_block_buffer + partial_block_len, input_data, len);
                return ISAL_MH_SHA256_CTX_ERROR_NONE;
        }
        // mh_sha256 calculation for the previous partial block
        if (partial_block_len != 0) {
                memcpy(partial_block_buffer + partial_block_len, input_data,
                       ISAL_MH_SHA256_BLOCK_SIZE - partial_block_len);
                // do one_block process
                MH_SHA256_BLOCK_FUNCTION(partial_block_buffer, mh_sha256_segs_digests,
                                         aligned_frame_buffer, 1);
                input_data += ISAL_MH_SHA256_BLOCK_SIZE - partial_block_len;
                len -= ISAL_MH_SHA256_BLOCK_SIZE - partial_block_len;
                memset(partial_block_buffer, 0, ISAL_MH_SHA256_BLOCK_SIZE);
        }
        // Calculate mh_sha256 for the current blocks
        num_blocks = len / ISAL_MH_SHA256_BLOCK_SIZE;
        if (num_blocks > 0) {
                // do num_blocks process
                MH_SHA256_BLOCK_FUNCTION(input_data, mh_sha256_segs_digests, aligned_frame_buffer,
                                         num_blocks);
                len -= num_blocks * ISAL_MH_SHA256_BLOCK_SIZE;
                input_data += num_blocks * ISAL_MH_SHA256_BLOCK_SIZE;
        }
        // Store the partial block
        if (len != 0) {
                memcpy(partial_block_buffer, input_data, len);
        }

        return ISAL_MH_SHA256_CTX_ERROR_NONE;
}

#ifdef MH_SHA256_UPDATE_SLVER
struct slver {
        uint16_t snum;
        uint8_t ver;
        uint8_t core;
};

// Version info
struct slver _mh_sha256_update_base_slver_000002ba;
struct slver _mh_sha256_update_base_slver = { 0x02ba, 0x00, 0x00 };
#endif