Пример #1
0
/* Choose SHA S/W or H/W context and initialize it
 * 
 * try_hw:
 *   0: Initialize S/W context
 *   1: Try acquiring SHA H/W resource first and initialize its H/W context if successful. If failed, initialize S/W context.
 */
static void mbedtls_sha512_init_internal(mbedtls_sha512_context *ctx, int try_hw)
{
    if (try_hw && crypto_sha_acquire()) {
        ctx->active_ctx = &ctx->hw_ctx;
        mbedtls_sha512_hw_init(&ctx->hw_ctx);
    } else {
        ctx->active_ctx = &ctx->sw_ctx;
        mbedtls_sha512_sw_init(&ctx->sw_ctx);
    }
}
Пример #2
0
void mbedtls_sha256_init(mbedtls_sha256_context *ctx)
{
    if (crypto_sha_acquire()) {
        ctx->ishw = 1;
        mbedtls_sha256_hw_init(&ctx->hw_ctx);
    }
    else {
        ctx->ishw = 0;
        mbedtls_sha256_sw_init(&ctx->sw_ctx);
    }
}