1 files changed, 298 insertions, 0 deletions

diff --git a/src/lib/libcrypto/evp/e_rc4_hmac_md5.c b/src/lib/libcrypto/evp/e_rc4_hmac_md5.c
new file mode 100644
index 0000000000..56563191ba
--- /dev/null
+++ b/src/lib/libcrypto/evp/e_rc4_hmac_md5.c
@@ -0,0 +1,298 @@
+/* ====================================================================
+ * Copyright (c) 2011 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
+ *    licensing@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.
+ * ====================================================================
+ */
+
+#include <openssl/opensslconf.h>
+
+#include <stdio.h>
+#include <string.h>
+
+#if !defined(OPENSSL_NO_RC4) && !defined(OPENSSL_NO_MD5)
+
+#include <openssl/evp.h>
+#include <openssl/objects.h>
+#include <openssl/rc4.h>
+#include <openssl/md5.h>
+
+#ifndef EVP_CIPH_FLAG_AEAD_CIPHER
+#define EVP_CIPH_FLAG_AEAD_CIPHER       0x200000
+#define EVP_CTRL_AEAD_TLS1_AAD          0x16
+#define EVP_CTRL_AEAD_SET_MAC_KEY       0x17
+#endif
+
+/* FIXME: surely this is available elsewhere? */
+#define EVP_RC4_KEY_SIZE                16
+
+typedef struct
+    {
+    RC4_KEY             ks;
+    MD5_CTX             head,tail,md;
+    size_t              payload_length;
+    } EVP_RC4_HMAC_MD5;
+
+#define NO_PAYLOAD_LENGTH       ((size_t)-1)
+
+void rc4_md5_enc (RC4_KEY *key, const void *in0, void *out,
+                MD5_CTX *ctx,const void *inp,size_t blocks);
+
+#define data(ctx) ((EVP_RC4_HMAC_MD5 *)(ctx)->cipher_data)
+
+static int rc4_hmac_md5_init_key(EVP_CIPHER_CTX *ctx,
+                        const unsigned char *inkey,
+                        const unsigned char *iv, int enc)
+        {
+        EVP_RC4_HMAC_MD5 *key = data(ctx);
+
+        RC4_set_key(&key->ks,EVP_CIPHER_CTX_key_length(ctx),
+                    inkey);
+
+        MD5_Init(&key->head);   /* handy when benchmarking */
+        key->tail = key->head;
+        key->md   = key->head;
+
+        key->payload_length = NO_PAYLOAD_LENGTH;
+
+        return 1;
+        }
+
+#if     !defined(OPENSSL_NO_ASM) &&     ( \
+        defined(__x86_64)       || defined(__x86_64__)  || \
+        defined(_M_AMD64)       || defined(_M_X64)      || \
+        defined(__INTEL__)              ) && \
+        !(defined(__APPLE__) && defined(__MACH__))
+#define STITCHED_CALL
+#endif
+
+#if !defined(STITCHED_CALL)
+#define rc4_off 0
+#define md5_off 0
+#endif
+
+static int rc4_hmac_md5_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
+                      const unsigned char *in, size_t len)
+        {
+        EVP_RC4_HMAC_MD5 *key = data(ctx);
+#if defined(STITCHED_CALL)
+        size_t  rc4_off = 32-1-(key->ks.x&(32-1)),      /* 32 is $MOD from rc4_md5-x86_64.pl */
+                md5_off = MD5_CBLOCK-key->md.num,
+                blocks;
+        unsigned int l;
+        extern unsigned int OPENSSL_ia32cap_P[];
+#endif
+        size_t  plen = key->payload_length;
+
+        if (plen!=NO_PAYLOAD_LENGTH && len!=(plen+MD5_DIGEST_LENGTH)) return 0;
+
+        if (ctx->encrypt) {
+                if (plen==NO_PAYLOAD_LENGTH) plen = len;
+#if defined(STITCHED_CALL)
+                /* cipher has to "fall behind" */
+                if (rc4_off>md5_off) md5_off+=MD5_CBLOCK;
+
+                if (plen>md5_off && (blocks=(plen-md5_off)/MD5_CBLOCK) &&
+                    (OPENSSL_ia32cap_P[0]&(1<<20))==0) {
+                        MD5_Update(&key->md,in,md5_off);
+                        RC4(&key->ks,rc4_off,in,out);
+
+                        rc4_md5_enc(&key->ks,in+rc4_off,out+rc4_off,
+                                &key->md,in+md5_off,blocks);
+                        blocks *= MD5_CBLOCK;
+                        rc4_off += blocks;
+                        md5_off += blocks;
+                        key->md.Nh += blocks>>29;
+                        key->md.Nl += blocks<<=3;
+                        if (key->md.Nl<(unsigned int)blocks) key->md.Nh++;
+                } else {
+                        rc4_off = 0;
+                        md5_off = 0;
+                }
+#endif
+                MD5_Update(&key->md,in+md5_off,plen-md5_off);
+
+                if (plen!=len) {        /* "TLS" mode of operation */
+                        if (in!=out)
+                                memcpy(out+rc4_off,in+rc4_off,plen-rc4_off);
+
+                        /* calculate HMAC and append it to payload */
+                        MD5_Final(out+plen,&key->md);
+                        key->md = key->tail;
+                        MD5_Update(&key->md,out+plen,MD5_DIGEST_LENGTH);
+                        MD5_Final(out+plen,&key->md);
+                        /* encrypt HMAC at once */
+                        RC4(&key->ks,len-rc4_off,out+rc4_off,out+rc4_off);
+                } else {
+                        RC4(&key->ks,len-rc4_off,in+rc4_off,out+rc4_off);
+                }
+        } else {
+                unsigned char mac[MD5_DIGEST_LENGTH];
+#if defined(STITCHED_CALL)
+                /* digest has to "fall behind" */
+                if (md5_off>rc4_off)    rc4_off += 2*MD5_CBLOCK;
+                else                    rc4_off += MD5_CBLOCK;
+
+                if (len>rc4_off && (blocks=(len-rc4_off)/MD5_CBLOCK) &&
+                    (OPENSSL_ia32cap_P[0]&(1<<20))==0) {
+                        RC4(&key->ks,rc4_off,in,out);
+                        MD5_Update(&key->md,out,md5_off);
+
+                        rc4_md5_enc(&key->ks,in+rc4_off,out+rc4_off,
+                                &key->md,out+md5_off,blocks);
+                        blocks *= MD5_CBLOCK;
+                        rc4_off += blocks;
+                        md5_off += blocks;
+                        l = (key->md.Nl+(blocks<<3))&0xffffffffU;
+                        if (l<key->md.Nl) key->md.Nh++;
+                        key->md.Nl  = l;
+                        key->md.Nh += blocks>>29;
+                } else {
+                        md5_off=0;
+                        rc4_off=0;
+                }
+#endif
+                /* decrypt HMAC at once */
+                RC4(&key->ks,len-rc4_off,in+rc4_off,out+rc4_off);
+                if (plen!=NO_PAYLOAD_LENGTH) {  /* "TLS" mode of operation */
+                        MD5_Update(&key->md,out+md5_off,plen-md5_off);
+
+                        /* calculate HMAC and verify it */
+                        MD5_Final(mac,&key->md);
+                        key->md = key->tail;
+                        MD5_Update(&key->md,mac,MD5_DIGEST_LENGTH);
+                        MD5_Final(mac,&key->md);
+
+                        if (memcmp(out+plen,mac,MD5_DIGEST_LENGTH))
+                                return 0;
+                } else {
+                        MD5_Update(&key->md,out+md5_off,len-md5_off);
+                }
+        }
+
+        key->payload_length = NO_PAYLOAD_LENGTH;
+
+        return 1;
+        }
+
+static int rc4_hmac_md5_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
+        {
+        EVP_RC4_HMAC_MD5 *key = data(ctx);
+
+        switch (type)
+                {
+        case EVP_CTRL_AEAD_SET_MAC_KEY:
+                {
+                unsigned int  i;
+                unsigned char hmac_key[64];
+
+                memset (hmac_key,0,sizeof(hmac_key));
+
+                if (arg > (int)sizeof(hmac_key)) {
+                        MD5_Init(&key->head);
+                        MD5_Update(&key->head,ptr,arg);
+                        MD5_Final(hmac_key,&key->head);
+                } else {
+                        memcpy(hmac_key,ptr,arg);
+                }
+
+                for (i=0;i<sizeof(hmac_key);i++)
+                        hmac_key[i] ^= 0x36;            /* ipad */
+                MD5_Init(&key->head);
+                MD5_Update(&key->head,hmac_key,sizeof(hmac_key));
+
+                for (i=0;i<sizeof(hmac_key);i++)
+                        hmac_key[i] ^= 0x36^0x5c;       /* opad */
+                MD5_Init(&key->tail);
+                MD5_Update(&key->tail,hmac_key,sizeof(hmac_key));
+
+                return 1;
+                }
+        case EVP_CTRL_AEAD_TLS1_AAD:
+                {
+                unsigned char *p=ptr;
+                unsigned int   len=p[arg-2]<<8|p[arg-1];
+
+                if (!ctx->encrypt)
+                        {
+                        len -= MD5_DIGEST_LENGTH;
+                        p[arg-2] = len>>8;
+                        p[arg-1] = len;
+                        }
+                key->payload_length=len;
+                key->md = key->head;
+                MD5_Update(&key->md,p,arg);
+
+                return MD5_DIGEST_LENGTH;
+                }
+        default:
+                return -1;
+                }
+        }
+
+static EVP_CIPHER r4_hmac_md5_cipher=
+        {
+#ifdef NID_rc4_hmac_md5
+        NID_rc4_hmac_md5,
+#else
+        NID_undef,
+#endif
+        1,EVP_RC4_KEY_SIZE,0,
+        EVP_CIPH_STREAM_CIPHER|EVP_CIPH_VARIABLE_LENGTH|EVP_CIPH_FLAG_AEAD_CIPHER,
+        rc4_hmac_md5_init_key,
+        rc4_hmac_md5_cipher,
+        NULL,
+        sizeof(EVP_RC4_HMAC_MD5),
+        NULL,
+        NULL,
+        rc4_hmac_md5_ctrl,
+        NULL
+        };
+
+const EVP_CIPHER *EVP_rc4_hmac_md5(void)
+        {
+        return(&r4_hmac_md5_cipher);
+        }
+#endif