aboutsummaryrefslogtreecommitdiff
path: root/openssl/crypto/evp/evp_lib.c
diff options
context:
space:
mode:
Diffstat (limited to 'openssl/crypto/evp/evp_lib.c')
-rw-r--r--openssl/crypto/evp/evp_lib.c278
1 files changed, 278 insertions, 0 deletions
diff --git a/openssl/crypto/evp/evp_lib.c b/openssl/crypto/evp/evp_lib.c
new file mode 100644
index 000000000..174cf6c59
--- /dev/null
+++ b/openssl/crypto/evp/evp_lib.c
@@ -0,0 +1,278 @@
+/* crypto/evp/evp_lib.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to. The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code. The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * 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 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 acknowledgement:
+ * "This product includes cryptographic software written by
+ * Eric Young (eay@cryptsoft.com)"
+ * The word 'cryptographic' can be left out if the rouines from the library
+ * being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ * the apps directory (application code) you must include an acknowledgement:
+ * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS 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 AUTHOR OR 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.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed. i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+#include <stdio.h>
+#include "cryptlib.h"
+#include <openssl/evp.h>
+#include <openssl/objects.h>
+
+int EVP_CIPHER_param_to_asn1(EVP_CIPHER_CTX *c, ASN1_TYPE *type)
+ {
+ int ret;
+
+ if (c->cipher->set_asn1_parameters != NULL)
+ ret=c->cipher->set_asn1_parameters(c,type);
+ else if (c->cipher->flags & EVP_CIPH_FLAG_DEFAULT_ASN1)
+ ret=EVP_CIPHER_set_asn1_iv(c, type);
+ else
+ ret=-1;
+ return(ret);
+ }
+
+int EVP_CIPHER_asn1_to_param(EVP_CIPHER_CTX *c, ASN1_TYPE *type)
+ {
+ int ret;
+
+ if (c->cipher->get_asn1_parameters != NULL)
+ ret=c->cipher->get_asn1_parameters(c,type);
+ else if (c->cipher->flags & EVP_CIPH_FLAG_DEFAULT_ASN1)
+ ret=EVP_CIPHER_get_asn1_iv(c, type);
+ else
+ ret=-1;
+ return(ret);
+ }
+
+int EVP_CIPHER_get_asn1_iv(EVP_CIPHER_CTX *c, ASN1_TYPE *type)
+ {
+ int i=0;
+ unsigned int l;
+
+ if (type != NULL)
+ {
+ l=EVP_CIPHER_CTX_iv_length(c);
+ OPENSSL_assert(l <= sizeof(c->iv));
+ i=ASN1_TYPE_get_octetstring(type,c->oiv,l);
+ if (i != (int)l)
+ return(-1);
+ else if (i > 0)
+ memcpy(c->iv,c->oiv,l);
+ }
+ return(i);
+ }
+
+int EVP_CIPHER_set_asn1_iv(EVP_CIPHER_CTX *c, ASN1_TYPE *type)
+ {
+ int i=0;
+ unsigned int j;
+
+ if (type != NULL)
+ {
+ j=EVP_CIPHER_CTX_iv_length(c);
+ OPENSSL_assert(j <= sizeof(c->iv));
+ i=ASN1_TYPE_set_octetstring(type,c->oiv,j);
+ }
+ return(i);
+ }
+
+/* Convert the various cipher NIDs and dummies to a proper OID NID */
+int EVP_CIPHER_type(const EVP_CIPHER *ctx)
+{
+ int nid;
+ ASN1_OBJECT *otmp;
+ nid = EVP_CIPHER_nid(ctx);
+
+ switch(nid) {
+
+ case NID_rc2_cbc:
+ case NID_rc2_64_cbc:
+ case NID_rc2_40_cbc:
+
+ return NID_rc2_cbc;
+
+ case NID_rc4:
+ case NID_rc4_40:
+
+ return NID_rc4;
+
+ case NID_aes_128_cfb128:
+ case NID_aes_128_cfb8:
+ case NID_aes_128_cfb1:
+
+ return NID_aes_128_cfb128;
+
+ case NID_aes_192_cfb128:
+ case NID_aes_192_cfb8:
+ case NID_aes_192_cfb1:
+
+ return NID_aes_192_cfb128;
+
+ case NID_aes_256_cfb128:
+ case NID_aes_256_cfb8:
+ case NID_aes_256_cfb1:
+
+ return NID_aes_256_cfb128;
+
+ case NID_des_cfb64:
+ case NID_des_cfb8:
+ case NID_des_cfb1:
+
+ return NID_des_cfb64;
+
+ default:
+ /* Check it has an OID and it is valid */
+ otmp = OBJ_nid2obj(nid);
+ if(!otmp || !otmp->data) nid = NID_undef;
+ ASN1_OBJECT_free(otmp);
+ return nid;
+ }
+}
+
+int EVP_CIPHER_block_size(const EVP_CIPHER *e)
+ {
+ return e->block_size;
+ }
+
+int EVP_CIPHER_CTX_block_size(const EVP_CIPHER_CTX *ctx)
+ {
+ return ctx->cipher->block_size;
+ }
+
+const EVP_CIPHER *EVP_CIPHER_CTX_cipher(const EVP_CIPHER_CTX *ctx)
+ {
+ return ctx->cipher;
+ }
+
+unsigned long EVP_CIPHER_flags(const EVP_CIPHER *cipher)
+ {
+ return cipher->flags;
+ }
+
+void *EVP_CIPHER_CTX_get_app_data(const EVP_CIPHER_CTX *ctx)
+ {
+ return ctx->app_data;
+ }
+
+void EVP_CIPHER_CTX_set_app_data(EVP_CIPHER_CTX *ctx, void *data)
+ {
+ ctx->app_data = data;
+ }
+
+int EVP_CIPHER_iv_length(const EVP_CIPHER *cipher)
+ {
+ return cipher->iv_len;
+ }
+
+int EVP_CIPHER_key_length(const EVP_CIPHER *cipher)
+ {
+ return cipher->key_len;
+ }
+
+int EVP_CIPHER_CTX_key_length(const EVP_CIPHER_CTX *ctx)
+ {
+ return ctx->key_len;
+ }
+
+int EVP_CIPHER_CTX_nid(const EVP_CIPHER_CTX *ctx)
+ {
+ return ctx->cipher->nid;
+ }
+
+int EVP_MD_block_size(const EVP_MD *md)
+ {
+ return md->block_size;
+ }
+
+int EVP_MD_type(const EVP_MD *md)
+ {
+ return md->type;
+ }
+
+int EVP_MD_pkey_type(const EVP_MD *md)
+ {
+ return md->pkey_type;
+ }
+
+int EVP_MD_size(const EVP_MD *md)
+ {
+ return md->md_size;
+ }
+
+const EVP_MD * EVP_MD_CTX_md(const EVP_MD_CTX *ctx)
+ {
+ return ctx->digest;
+ }
+
+void EVP_MD_CTX_set_flags(EVP_MD_CTX *ctx, int flags)
+ {
+ ctx->flags |= flags;
+ }
+
+void EVP_MD_CTX_clear_flags(EVP_MD_CTX *ctx, int flags)
+ {
+ ctx->flags &= ~flags;
+ }
+
+int EVP_MD_CTX_test_flags(const EVP_MD_CTX *ctx, int flags)
+ {
+ return (ctx->flags & flags);
+ }
+
+void EVP_CIPHER_CTX_set_flags(EVP_CIPHER_CTX *ctx, int flags)
+ {
+ ctx->flags |= flags;
+ }
+
+void EVP_CIPHER_CTX_clear_flags(EVP_CIPHER_CTX *ctx, int flags)
+ {
+ ctx->flags &= ~flags;
+ }
+
+int EVP_CIPHER_CTX_test_flags(const EVP_CIPHER_CTX *ctx, int flags)
+ {
+ return (ctx->flags & flags);
+ }
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-16 05:36:17 +0000