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-rw-r--r--crypto/evp/e_rc4_hmac_md5.c450
1 files changed, 227 insertions, 223 deletions
diff --git a/crypto/evp/e_rc4_hmac_md5.c b/crypto/evp/e_rc4_hmac_md5.c
index 56563191ba16..80735d345adf 100644
--- a/crypto/evp/e_rc4_hmac_md5.c
+++ b/crypto/evp/e_rc4_hmac_md5.c
@@ -54,245 +54,249 @@
#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
+# 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
+# define EVP_RC4_KEY_SIZE 16
-typedef struct
- {
- RC4_KEY ks;
- MD5_CTX head,tail,md;
- size_t payload_length;
- } EVP_RC4_HMAC_MD5;
+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)
+# 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);
+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)
+# 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);
+ 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);
+ 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;
+ MD5_Init(&key->head); /* handy when benchmarking */
+ key->tail = key->head;
+ key->md = key->head;
- key->payload_length = NO_PAYLOAD_LENGTH;
+ key->payload_length = NO_PAYLOAD_LENGTH;
- return 1;
- }
+ 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(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
+# 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 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);
- }
+{
+ return (&r4_hmac_md5_cipher);
+}
#endif