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-rw-r--r--package/ead/src/tinysrp/bn_ctx.c142
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diff --git a/package/ead/src/tinysrp/bn_ctx.c b/package/ead/src/tinysrp/bn_ctx.c
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+/* crypto/bn/bn_ctx.c */
+/* Written by Ulf Moeller for the OpenSSL project. */
+/* ====================================================================
+ * Copyright (c) 1998-2000 The OpenSSL Project. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ * software must display the following acknowledgment:
+ * "This product includes software developed by the OpenSSL Project
+ * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ * endorse or promote products derived from this software without
+ * prior written permission. For written permission, please contact
+ * openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ * nor may "OpenSSL" appear in their names without prior written
+ * permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ * acknowledgment:
+ * "This product includes software developed by the OpenSSL Project
+ * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com). This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+#ifndef BN_CTX_DEBUG
+# undef NDEBUG /* avoid conflicting definitions */
+# define NDEBUG
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <bn.h>
+
+
+BN_CTX *BN_CTX_new(void)
+ {
+ BN_CTX *ret;
+
+ ret=(BN_CTX *)malloc(sizeof(BN_CTX));
+ if (ret == NULL)
+ {
+ return(NULL);
+ }
+
+ BN_CTX_init(ret);
+ ret->flags=BN_FLG_MALLOCED;
+ return(ret);
+ }
+
+void BN_CTX_init(BN_CTX *ctx)
+ {
+ int i;
+ ctx->tos = 0;
+ ctx->flags = 0;
+ ctx->depth = 0;
+ ctx->too_many = 0;
+ for (i = 0; i < BN_CTX_NUM; i++)
+ BN_init(&(ctx->bn[i]));
+ }
+
+void BN_CTX_free(BN_CTX *ctx)
+ {
+ int i;
+
+ if (ctx == NULL) return;
+ assert(ctx->depth == 0);
+
+ for (i=0; i < BN_CTX_NUM; i++)
+ BN_clear_free(&(ctx->bn[i]));
+ if (ctx->flags & BN_FLG_MALLOCED)
+ free(ctx);
+ }
+
+void BN_CTX_start(BN_CTX *ctx)
+ {
+ if (ctx->depth < BN_CTX_NUM_POS)
+ ctx->pos[ctx->depth] = ctx->tos;
+ ctx->depth++;
+ }
+
+BIGNUM *BN_CTX_get(BN_CTX *ctx)
+ {
+ if (ctx->depth > BN_CTX_NUM_POS || ctx->tos >= BN_CTX_NUM)
+ {
+ if (!ctx->too_many)
+ {
+ /* disable error code until BN_CTX_end is called: */
+ ctx->too_many = 1;
+ }
+ return NULL;
+ }
+ return (&(ctx->bn[ctx->tos++]));
+ }
+
+void BN_CTX_end(BN_CTX *ctx)
+ {
+ if (ctx == NULL) return;
+ assert(ctx->depth > 0);
+ if (ctx->depth == 0)
+ /* should never happen, but we can tolerate it if not in
+ * debug mode (could be a 'goto err' in the calling function
+ * before BN_CTX_start was reached) */
+ BN_CTX_start(ctx);
+
+ ctx->too_many = 0;
+ ctx->depth--;
+ if (ctx->depth < BN_CTX_NUM_POS)
+ ctx->tos = ctx->pos[ctx->depth];
+ }