/*
* SHA-512 context setup
*/
int mbedtls_sha512_starts_ret(mbedtls_sha512_context *ctx, int is384)
{
if (ctx->active_ctx == &ctx->hw_ctx) {
mbedtls_sha512_hw_starts(&ctx->hw_ctx, is384);
} else if (ctx->active_ctx == &ctx->sw_ctx) {
mbedtls_sha512_sw_starts(&ctx->sw_ctx, is384);
}
return 0;
}
void mbedtls_sha512_hw_finish(crypto_sha_context *ctx, unsigned char output[64])
{
// H/W SHA cannot handle zero data well. Fall back to S/W SHA.
if (ctx->total) {
crypto_sha_update_nobuf(ctx, ctx->buffer, ctx->buffer_left, 1);
ctx->buffer_left = 0;
crypto_sha_getinternstate(output, ctx->is224_384 ? 48 : 64);
CRPT->HMAC_CTL |= CRPT_HMAC_CTL_STOP_Msk;
}
else {
mbedtls_sha512_sw_context ctx_sw;
mbedtls_sha512_sw_init(&ctx_sw);
mbedtls_sha512_sw_starts(&ctx_sw, ctx->is224_384);
mbedtls_sha512_sw_finish(&ctx_sw, output);
mbedtls_sha512_sw_free(&ctx_sw);
}
}