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authordjm <>2012-10-13 21:25:14 +0000
committerdjm <>2012-10-13 21:25:14 +0000
commit93723b50b639d8dc717bc1bf463fd46e1b321239 (patch)
tree281e0a29ae8f87a8c47fbd4deaa1f3d48b8cc5c1 /src/lib/libcrypto/rc4/rc4_skey.c
parent65e72ac55a6405783db7a12d7e35a7561d46005b (diff)
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Diffstat (limited to 'src/lib/libcrypto/rc4/rc4_skey.c')
-rw-r--r--src/lib/libcrypto/rc4/rc4_skey.c36
1 files changed, 1 insertions, 35 deletions
diff --git a/src/lib/libcrypto/rc4/rc4_skey.c b/src/lib/libcrypto/rc4/rc4_skey.c
index b22c40b0bd..fda27636e7 100644
--- a/src/lib/libcrypto/rc4/rc4_skey.c
+++ b/src/lib/libcrypto/rc4/rc4_skey.c
@@ -85,7 +85,7 @@ const char *RC4_options(void)
85 * Date: Wed, 14 Sep 1994 06:35:31 GMT 85 * Date: Wed, 14 Sep 1994 06:35:31 GMT
86 */ 86 */
87 87
88void RC4_set_key(RC4_KEY *key, int len, const unsigned char *data) 88void private_RC4_set_key(RC4_KEY *key, int len, const unsigned char *data)
89 { 89 {
90 register RC4_INT tmp; 90 register RC4_INT tmp;
91 register int id1,id2; 91 register int id1,id2;
@@ -104,40 +104,6 @@ void RC4_set_key(RC4_KEY *key, int len, const unsigned char *data)
104 d[(n)]=d[id2]; \ 104 d[(n)]=d[id2]; \
105 d[id2]=tmp; } 105 d[id2]=tmp; }
106 106
107#if defined(OPENSSL_CPUID_OBJ) && !defined(OPENSSL_NO_ASM)
108# if defined(__i386) || defined(__i386__) || defined(_M_IX86) || \
109 defined(__INTEL__) || \
110 defined(__x86_64) || defined(__x86_64__) || defined(_M_AMD64)
111 if (sizeof(RC4_INT) > 1) {
112 /*
113 * Unlike all other x86 [and x86_64] implementations,
114 * Intel P4 core [including EM64T] was found to perform
115 * poorly with wider RC4_INT. Performance improvement
116 * for IA-32 hand-coded assembler turned out to be 2.8x
117 * if re-coded for RC4_CHAR! It's however inappropriate
118 * to just switch to RC4_CHAR for x86[_64], as non-P4
119 * implementations suffer from significant performance
120 * losses then, e.g. PIII exhibits >2x deterioration,
121 * and so does Opteron. In order to assure optimal
122 * all-round performance, let us [try to] detect P4 at
123 * run-time by checking upon HTT bit in CPU capability
124 * vector and set up compressed key schedule, which is
125 * recognized by correspondingly updated assembler
126 * module...
127 * <appro@fy.chalmers.se>
128 */
129 if (OPENSSL_ia32cap_P & (1<<28)) {
130 unsigned char *cp=(unsigned char *)d;
131
132 for (i=0;i<256;i++) cp[i]=i;
133 for (i=0;i<256;i++) SK_LOOP(cp,i);
134 /* mark schedule as compressed! */
135 d[256/sizeof(RC4_INT)]=-1;
136 return;
137 }
138 }
139# endif
140#endif
141 for (i=0; i < 256; i++) d[i]=i; 107 for (i=0; i < 256; i++) d[i]=i;
142 for (i=0; i < 256; i+=4) 108 for (i=0; i < 256; i+=4)
143 { 109 {