diff options
author | Andy Polyakov <appro@openssl.org> | 2003-01-02 17:19:05 +0000 |
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committer | Andy Polyakov <appro@openssl.org> | 2003-01-02 17:19:05 +0000 |
commit | 4a37c48789ef5ef8c2b83c2366b69b026859cf67 (patch) | |
tree | 178d86b255d59b22d948a3fa6b06915aa1797523 /crypto | |
parent | ad492c3601679ce0addfa4e0febcca49e89dcb8b (diff) |
I implemented this when troubleshooting performance problem on SPARC Solaris.
As there is an apparent interest for optimization for footprint, I figured
that this can eventually become useful.
Diffstat (limited to 'crypto')
-rw-r--r-- | crypto/sha/sha_locl.h | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/crypto/sha/sha_locl.h b/crypto/sha/sha_locl.h index 2dd63a62a6..48c0ac6422 100644 --- a/crypto/sha/sha_locl.h +++ b/crypto/sha/sha_locl.h @@ -168,6 +168,8 @@ int HASH_INIT (SHA_CTX *c) #define F_40_59(b,c,d) (((b) & (c)) | (((b)|(c)) & (d))) #define F_60_79(b,c,d) F_20_39(b,c,d) +#ifndef OPENSSL_SMALL_FOOTPRINT + #define BODY_00_15(i,a,b,c,d,e,f,xi) \ (f)=xi+(e)+K_00_19+ROTATE((a),5)+F_00_19((b),(c),(d)); \ (b)=ROTATE((b),30); @@ -470,3 +472,127 @@ void HASH_BLOCK_DATA_ORDER (SHA_CTX *c, const void *p, int num) } } #endif + +#else /* OPENSSL_SMALL_FOOTPRINT */ + +#define BODY_00_15(xi) do { \ + T=E+K_00_19+F_00_19(B,C,D); \ + E=D, D=C, C=ROTATE(B,30), B=A; \ + A=ROTATE(A,5)+T+xi; } while(0) + +#define BODY_16_19(xa,xb,xc,xd) do { \ + Xupdate(T,xa,xa,xb,xc,xd); \ + T+=E+K_00_19+F_00_19(B,C,D); \ + E=D, D=C, C=ROTATE(B,30), B=A; \ + A=ROTATE(A,5)+T; } while(0) + +#define BODY_20_39(xa,xb,xc,xd) do { \ + Xupdate(T,xa,xa,xb,xc,xd); \ + T+=E+K_20_39+F_20_39(B,C,D); \ + E=D, D=C, C=ROTATE(B,30), B=A; \ + A=ROTATE(A,5)+T; } while(0) + +#define BODY_40_59(xa,xb,xc,xd) do { \ + Xupdate(T,xa,xa,xb,xc,xd); \ + T+=E+K_40_59+F_40_59(B,C,D); \ + E=D, D=C, C=ROTATE(B,30), B=A; \ + A=ROTATE(A,5)+T; } while(0) + +#define BODY_60_79(xa,xb,xc,xd) do { \ + Xupdate(T,xa,xa,xb,xc,xd); \ + T=E+K_60_79+F_60_79(B,C,D); \ + E=D, D=C, C=ROTATE(B,30), B=A; \ + A=ROTATE(A,5)+T+xa; } while(0) + +#ifndef DONT_IMPLEMENT_BLOCK_HOST_ORDER +void HASH_BLOCK_HOST_ORDER (SHA_CTX *c, const void *d, int num) + { + const SHA_LONG *W=d; + register unsigned MD32_REG_T A,B,C,D,E,T; + int i; + SHA_LONG X[16]; + + A=c->h0; + B=c->h1; + C=c->h2; + D=c->h3; + E=c->h4; + + for (;;) + { + for (i=0;i<16;i++) + { X[i]=W[i]; BODY_00_15(X[i]); } + for (i=0;i<4;i++) + { BODY_16_19(X[i], X[i+2], X[i+8], X[(i+13)&15]); } + for (;i<24;i++) + { BODY_20_39(X[i&15], X[(i+2)&15], X[(i+8)&15],X[(i+13)&15]); } + for (i=0;i<20;i++) + { BODY_40_59(X[(i+8)&15],X[(i+10)&15],X[i&15], X[(i+5)&15]); } + for (i=4;i<24;i++) + { BODY_60_79(X[(i+8)&15],X[(i+10)&15],X[i&15], X[(i+5)&15]); } + + c->h0=(c->h0+A)&0xffffffffL; + c->h1=(c->h1+B)&0xffffffffL; + c->h2=(c->h2+C)&0xffffffffL; + c->h3=(c->h3+D)&0xffffffffL; + c->h4=(c->h4+E)&0xffffffffL; + + if (--num <= 0) break; + + A=c->h0; + B=c->h1; + C=c->h2; + D=c->h3; + E=c->h4; + + W+=SHA_LBLOCK; + } + } +#endif + +#ifndef DONT_IMPLEMENT_BLOCK_DATA_ORDER +void HASH_BLOCK_DATA_ORDER (SHA_CTX *c, const void *p, int num) + { + const unsigned char *data=p; + register unsigned MD32_REG_T A,B,C,D,E,T,l; + int i; + SHA_LONG X[16]; + + A=c->h0; + B=c->h1; + C=c->h2; + D=c->h3; + E=c->h4; + + for (;;) + { + for (i=0;i<16;i++) + { HOST_c2l(data,l); X[i]=l; BODY_00_15(X[i]); } + for (i=0;i<4;i++) + { BODY_16_19(X[i], X[i+2], X[i+8], X[(i+13)&15]); } + for (;i<24;i++) + { BODY_20_39(X[i&15], X[(i+2)&15], X[(i+8)&15],X[(i+13)&15]); } + for (i=0;i<20;i++) + { BODY_40_59(X[(i+8)&15],X[(i+10)&15],X[i&15], X[(i+5)&15]); } + for (i=4;i<24;i++) + { BODY_60_79(X[(i+8)&15],X[(i+10)&15],X[i&15], X[(i+5)&15]); } + + c->h0=(c->h0+A)&0xffffffffL; + c->h1=(c->h1+B)&0xffffffffL; + c->h2=(c->h2+C)&0xffffffffL; + c->h3=(c->h3+D)&0xffffffffL; + c->h4=(c->h4+E)&0xffffffffL; + + if (--num <= 0) break; + + A=c->h0; + B=c->h1; + C=c->h2; + D=c->h3; + E=c->h4; + + } + } +#endif + +#endif |