C++ (Cpp) EVP_PKEY_CTX_dup Examples

Example #1

File: digest.c Project: 10045125/xuggle-xuggler

int EVP_MD_CTX_copy_ex(EVP_MD_CTX *out, const EVP_MD_CTX *in)
	{
	unsigned char *tmp_buf;
	if ((in == NULL) || (in->digest == NULL))
		{
		EVPerr(EVP_F_EVP_MD_CTX_COPY_EX,EVP_R_INPUT_NOT_INITIALIZED);
		return 0;
		}
#ifndef OPENSSL_NO_ENGINE
	/* Make sure it's safe to copy a digest context using an ENGINE */
	if (in->engine && !ENGINE_init(in->engine))
		{
		EVPerr(EVP_F_EVP_MD_CTX_COPY_EX,ERR_R_ENGINE_LIB);
		return 0;
		}
#endif

	if (out->digest == in->digest)
		{
		tmp_buf = out->md_data;
	    	EVP_MD_CTX_set_flags(out,EVP_MD_CTX_FLAG_REUSE);
		}
	else tmp_buf = NULL;
	EVP_MD_CTX_cleanup(out);
	memcpy(out,in,sizeof *out);

	if (in->md_data && out->digest->ctx_size)
		{
		if (tmp_buf)
			out->md_data = tmp_buf;
		else
			{
			out->md_data=OPENSSL_malloc(out->digest->ctx_size);
			if (!out->md_data)
				{
				EVPerr(EVP_F_EVP_MD_CTX_COPY_EX,ERR_R_MALLOC_FAILURE);
				return 0;
				}
			}
		memcpy(out->md_data,in->md_data,out->digest->ctx_size);
		}

	out->update = in->update;

	if (in->pctx)
		{
		out->pctx = EVP_PKEY_CTX_dup(in->pctx);
		if (!out->pctx)
			{
			EVP_MD_CTX_cleanup(out);
			return 0;
			}
		}

	if (out->digest->copy)
		return out->digest->copy(out,in);
	
	return 1;
	}

Example #2

File: m_sigver.c Project: AimaTeam-hehai/openssl

int EVP_DigestSignFinal(EVP_MD_CTX *ctx, unsigned char *sigret,
                        size_t *siglen)
{
    int sctx = 0, r = 0;
    EVP_PKEY_CTX *pctx = ctx->pctx;
    if (pctx->pmeth->flags & EVP_PKEY_FLAG_SIGCTX_CUSTOM) {
        if (!sigret)
            return pctx->pmeth->signctx(pctx, sigret, siglen, ctx);
        if (ctx->flags & EVP_MD_CTX_FLAG_FINALISE)
            r = pctx->pmeth->signctx(pctx, sigret, siglen, ctx);
        else {
            EVP_PKEY_CTX *dctx = EVP_PKEY_CTX_dup(ctx->pctx);
            if (!dctx)
                return 0;
            r = dctx->pmeth->signctx(dctx, sigret, siglen, ctx);
            EVP_PKEY_CTX_free(dctx);
        }
        return r;
    }
    if (pctx->pmeth->signctx)
        sctx = 1;
    else
        sctx = 0;
    if (sigret) {
        unsigned char md[EVP_MAX_MD_SIZE];
        unsigned int mdlen = 0;
        if (ctx->flags & EVP_MD_CTX_FLAG_FINALISE) {
            if (sctx)
                r = ctx->pctx->pmeth->signctx(ctx->pctx, sigret, siglen, ctx);
            else
                r = EVP_DigestFinal_ex(ctx, md, &mdlen);
        } else {
            EVP_MD_CTX tmp_ctx;
            EVP_MD_CTX_init(&tmp_ctx);
            if (!EVP_MD_CTX_copy_ex(&tmp_ctx, ctx))
                return 0;
            if (sctx)
                r = tmp_ctx.pctx->pmeth->signctx(tmp_ctx.pctx,
                                                 sigret, siglen, &tmp_ctx);
            else
                r = EVP_DigestFinal_ex(&tmp_ctx, md, &mdlen);
            EVP_MD_CTX_cleanup(&tmp_ctx);
        }
        if (sctx || !r)
            return r;
        if (EVP_PKEY_sign(ctx->pctx, sigret, siglen, md, mdlen) <= 0)
            return 0;
    } else {
        if (sctx) {
            if (pctx->pmeth->signctx(pctx, sigret, siglen, ctx) <= 0)
                return 0;
        } else {
            int s = EVP_MD_size(ctx->digest);
            if (s < 0 || EVP_PKEY_sign(pctx, sigret, siglen, NULL, s) <= 0)
                return 0;
        }
    }
    return 1;
}