diff options
Diffstat (limited to 'thirdparty/openssl/crypto/evp/e_rc4_hmac_md5.c')
| -rw-r--r-- | thirdparty/openssl/crypto/evp/e_rc4_hmac_md5.c | 308 |
1 files changed, 308 insertions, 0 deletions
diff --git a/thirdparty/openssl/crypto/evp/e_rc4_hmac_md5.c b/thirdparty/openssl/crypto/evp/e_rc4_hmac_md5.c new file mode 100644 index 0000000000..2da1117829 --- /dev/null +++ b/thirdparty/openssl/crypto/evp/e_rc4_hmac_md5.c @@ -0,0 +1,308 @@ +/* ==================================================================== + * 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/crypto.h> +# 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 (CRYPTO_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; + + if (arg != EVP_AEAD_TLS1_AAD_LEN) + return -1; + + 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 |