upstream: switch sntrup implementation source from supercop to
libpqcrypto; the latter is almost identical but doesn't rely on signed underflow to implement an optimised integer sort; from markus@ OpenBSD-Commit-ID: cd09bbf0e0fcef1bedca69fdf7990dc360567cf8
This commit is contained in:
djm@openbsd.org
Damien Miller
parent
d50ab3cd6f
commit
533cfb01e4
105
sntrup4591761.c
105
sntrup4591761.c
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@ -1,26 +1,36 @@
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#include <string.h>
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#include "crypto_api.h"
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/* from supercop-20181216/crypto_sort/int32/portable3/int32_minmax.inc */
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#define int32_MINMAX(a,b) \
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do { \
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int32 ab = b ^ a; \
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int32 c = b - a; \
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c ^= ab & (c ^ b); \
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c >>= 31; \
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c &= ab; \
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a ^= c; \
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b ^= c; \
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} while(0)
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/* from supercop-20181216/crypto_sort/int32/portable3/sort.c */
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#define int32 crypto_int32
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/* from libpqcrypto-20180314/crypto_kem/sntrup4591761/ref/int32_sort.h */
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#ifndef int32_sort_h
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#define int32_sort_h
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static void crypto_sort_int32(void *array,long long n)
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static void int32_sort(crypto_int32 *,int);
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#endif
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/* from libpqcrypto-20180314/crypto_kem/sntrup4591761/ref/int32_sort.c */
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/* See https://ntruprime.cr.yp.to/software.html for detailed documentation. */
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static void minmax(crypto_int32 *x,crypto_int32 *y)
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{
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long long top,p,q,r,i;
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int32 *x = array;
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crypto_uint32 xi = *x;
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crypto_uint32 yi = *y;
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crypto_uint32 xy = xi ^ yi;
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crypto_uint32 c = yi - xi;
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c ^= xy & (c ^ yi);
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c >>= 31;
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c = -c;
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c &= xy;
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*x = xi ^ c;
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*y = yi ^ c;
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}
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static void int32_sort(crypto_int32 *x,int n)
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{
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int top,p,q,i;
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if (n < 2) return;
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top = 1;
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@ -29,22 +39,15 @@ static void crypto_sort_int32(void *array,long long n)
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for (p = top;p > 0;p >>= 1) {
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for (i = 0;i < n - p;++i)
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if (!(i & p))
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int32_MINMAX(x[i],x[i+p]);
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i = 0;
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for (q = top;q > p;q >>= 1) {
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for (;i < n - q;++i) {
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if (!(i & p)) {
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int32 a = x[i + p];
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for (r = q;r > p;r >>= 1)
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int32_MINMAX(a,x[i+r]);
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x[i + p] = a;
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}
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}
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}
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minmax(x + i,x + i + p);
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for (q = top;q > p;q >>= 1)
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for (i = 0;i < n - q;++i)
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if (!(i & p))
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minmax(x + i + p,x + i + q);
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}
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}
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/* from supercop-20181216/crypto_kem/sntrup4591761/ref/small.h */
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/* from libpqcrypto-20180314/crypto_kem/sntrup4591761/ref/small.h */
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#ifndef small_h
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#define small_h
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@ -62,7 +65,7 @@ static void small_random_weightw(small *);
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#endif
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/* from supercop-20181216/crypto_kem/sntrup4591761/ref/mod3.h */
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/* from libpqcrypto-20180314/crypto_kem/sntrup4591761/ref/mod3.h */
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#ifndef mod3_h
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#define mod3_h
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@ -122,7 +125,7 @@ static inline small mod3_quotient(small num,small den)
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#endif
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/* from supercop-20181216/crypto_kem/sntrup4591761/ref/modq.h */
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/* from libpqcrypto-20180314/crypto_kem/sntrup4591761/ref/modq.h */
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#ifndef modq_h
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#define modq_h
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@ -212,7 +215,7 @@ static inline modq modq_quotient(modq num,modq den)
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#endif
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/* from supercop-20181216/crypto_kem/sntrup4591761/ref/params.h */
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/* from libpqcrypto-20180314/crypto_kem/sntrup4591761/ref/params.h */
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#ifndef params_h
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#define params_h
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@ -228,7 +231,7 @@ static inline modq modq_quotient(modq num,modq den)
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#endif
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/* from supercop-20181216/crypto_kem/sntrup4591761/ref/r3.h */
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/* from libpqcrypto-20180314/crypto_kem/sntrup4591761/ref/r3.h */
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#ifndef r3_h
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#define r3_h
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@ -239,7 +242,7 @@ extern int r3_recip(small *,const small *);
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#endif
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/* from supercop-20181216/crypto_kem/sntrup4591761/ref/rq.h */
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/* from libpqcrypto-20180314/crypto_kem/sntrup4591761/ref/rq.h */
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#ifndef rq_h
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#define rq_h
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@ -260,7 +263,7 @@ int rq_recip3(modq *,const small *);
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#endif
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/* from supercop-20181216/crypto_kem/sntrup4591761/ref/swap.h */
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/* from libpqcrypto-20180314/crypto_kem/sntrup4591761/ref/swap.h */
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#ifndef swap_h
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#define swap_h
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@ -268,7 +271,7 @@ static void swap(void *,void *,int,int);
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#endif
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/* from supercop-20181216/crypto_kem/sntrup4591761/ref/dec.c */
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/* from libpqcrypto-20180314/crypto_kem/sntrup4591761/ref/dec.c */
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/* See https://ntruprime.cr.yp.to/software.html for detailed documentation. */
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#ifdef KAT
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@ -334,7 +337,7 @@ int crypto_kem_sntrup4591761_dec(
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return result;
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}
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/* from supercop-20181216/crypto_kem/sntrup4591761/ref/enc.c */
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/* from libpqcrypto-20180314/crypto_kem/sntrup4591761/ref/enc.c */
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/* See https://ntruprime.cr.yp.to/software.html for detailed documentation. */
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#ifdef KAT
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@ -380,7 +383,7 @@ int crypto_kem_sntrup4591761_enc(
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return 0;
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}
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/* from supercop-20181216/crypto_kem/sntrup4591761/ref/keypair.c */
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/* from libpqcrypto-20180314/crypto_kem/sntrup4591761/ref/keypair.c */
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/* See https://ntruprime.cr.yp.to/software.html for detailed documentation. */
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@ -416,7 +419,7 @@ int crypto_kem_sntrup4591761_keypair(unsigned char *pk,unsigned char *sk)
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return 0;
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}
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/* from supercop-20181216/crypto_kem/sntrup4591761/ref/r3_mult.c */
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/* from libpqcrypto-20180314/crypto_kem/sntrup4591761/ref/r3_mult.c */
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/* See https://ntruprime.cr.yp.to/software.html for detailed documentation. */
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@ -448,7 +451,7 @@ static void r3_mult(small *h,const small *f,const small *g)
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h[i] = fg[i];
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}
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/* from supercop-20181216/crypto_kem/sntrup4591761/ref/r3_recip.c */
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/* from libpqcrypto-20180314/crypto_kem/sntrup4591761/ref/r3_recip.c */
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/* See https://ntruprime.cr.yp.to/software.html for detailed documentation. */
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@ -574,7 +577,7 @@ int r3_recip(small *r,const small *s)
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return smaller_mask_r3_recip(0,d);
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}
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/* from supercop-20181216/crypto_kem/sntrup4591761/ref/randomsmall.c */
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/* from libpqcrypto-20180314/crypto_kem/sntrup4591761/ref/randomsmall.c */
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/* See https://ntruprime.cr.yp.to/software.html for detailed documentation. */
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@ -588,7 +591,7 @@ static void small_random(small *g)
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}
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}
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/* from supercop-20181216/crypto_kem/sntrup4591761/ref/randomweightw.c */
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/* from libpqcrypto-20180314/crypto_kem/sntrup4591761/ref/randomweightw.c */
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/* See https://ntruprime.cr.yp.to/software.html for detailed documentation. */
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@ -600,11 +603,11 @@ static void small_random_weightw(small *f)
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for (i = 0;i < p;++i) r[i] = small_random32();
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for (i = 0;i < w;++i) r[i] &= -2;
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for (i = w;i < p;++i) r[i] = (r[i] & -3) | 1;
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crypto_sort_int32(r,p);
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int32_sort(r,p);
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for (i = 0;i < p;++i) f[i] = ((small) (r[i] & 3)) - 1;
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}
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/* from supercop-20181216/crypto_kem/sntrup4591761/ref/rq.c */
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/* from libpqcrypto-20180314/crypto_kem/sntrup4591761/ref/rq.c */
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/* See https://ntruprime.cr.yp.to/software.html for detailed documentation. */
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@ -733,7 +736,7 @@ static void rq_decode(modq *f,const unsigned char *c)
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*f++ = modq_freeze(c0 + q - qshift);
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}
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/* from supercop-20181216/crypto_kem/sntrup4591761/ref/rq_mult.c */
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/* from libpqcrypto-20180314/crypto_kem/sntrup4591761/ref/rq_mult.c */
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/* See https://ntruprime.cr.yp.to/software.html for detailed documentation. */
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@ -765,7 +768,7 @@ static void rq_mult(modq *h,const modq *f,const small *g)
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h[i] = fg[i];
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}
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/* from supercop-20181216/crypto_kem/sntrup4591761/ref/rq_recip3.c */
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/* from libpqcrypto-20180314/crypto_kem/sntrup4591761/ref/rq_recip3.c */
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/* See https://ntruprime.cr.yp.to/software.html for detailed documentation. */
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@ -891,7 +894,7 @@ int rq_recip3(modq *r,const small *s)
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return smaller_mask_rq_recip3(0,d);
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}
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/* from supercop-20181216/crypto_kem/sntrup4591761/ref/rq_round3.c */
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/* from libpqcrypto-20180314/crypto_kem/sntrup4591761/ref/rq_round3.c */
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/* See https://ntruprime.cr.yp.to/software.html for detailed documentation. */
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@ -903,7 +906,7 @@ static void rq_round3(modq *h,const modq *f)
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h[i] = ((21846 * (f[i] + 2295) + 32768) >> 16) * 3 - 2295;
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}
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/* from supercop-20181216/crypto_kem/sntrup4591761/ref/rq_rounded.c */
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/* from libpqcrypto-20180314/crypto_kem/sntrup4591761/ref/rq_rounded.c */
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/* See https://ntruprime.cr.yp.to/software.html for detailed documentation. */
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@ -1005,7 +1008,7 @@ static void rq_decoderounded(modq *f,const unsigned char *c)
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*f++ = modq_freeze(f1 * 3 + q - qshift);
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}
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/* from supercop-20181216/crypto_kem/sntrup4591761/ref/small.c */
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/* from libpqcrypto-20180314/crypto_kem/sntrup4591761/ref/small.c */
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/* See https://ntruprime.cr.yp.to/software.html for detailed documentation. */
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@ -1044,7 +1047,7 @@ static void small_decode(small *f,const unsigned char *c)
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*f++ = ((small) (c0 & 3)) - 1;
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}
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/* from supercop-20181216/crypto_kem/sntrup4591761/ref/swap.c */
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/* from libpqcrypto-20180314/crypto_kem/sntrup4591761/ref/swap.c */
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/* See https://ntruprime.cr.yp.to/software.html for detailed documentation. */
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@ -1,28 +1,28 @@
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#!/bin/sh
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FILES="
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supercop-20181216/crypto_sort/int32/portable3/int32_minmax.inc
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supercop-20181216/crypto_sort/int32/portable3/sort.c
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supercop-20181216/crypto_kem/sntrup4591761/ref/small.h
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supercop-20181216/crypto_kem/sntrup4591761/ref/mod3.h
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supercop-20181216/crypto_kem/sntrup4591761/ref/modq.h
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supercop-20181216/crypto_kem/sntrup4591761/ref/params.h
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supercop-20181216/crypto_kem/sntrup4591761/ref/r3.h
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supercop-20181216/crypto_kem/sntrup4591761/ref/rq.h
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supercop-20181216/crypto_kem/sntrup4591761/ref/swap.h
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supercop-20181216/crypto_kem/sntrup4591761/ref/dec.c
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supercop-20181216/crypto_kem/sntrup4591761/ref/enc.c
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supercop-20181216/crypto_kem/sntrup4591761/ref/keypair.c
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supercop-20181216/crypto_kem/sntrup4591761/ref/r3_mult.c
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supercop-20181216/crypto_kem/sntrup4591761/ref/r3_recip.c
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supercop-20181216/crypto_kem/sntrup4591761/ref/randomsmall.c
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supercop-20181216/crypto_kem/sntrup4591761/ref/randomweightw.c
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supercop-20181216/crypto_kem/sntrup4591761/ref/rq.c
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supercop-20181216/crypto_kem/sntrup4591761/ref/rq_mult.c
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supercop-20181216/crypto_kem/sntrup4591761/ref/rq_recip3.c
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supercop-20181216/crypto_kem/sntrup4591761/ref/rq_round3.c
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supercop-20181216/crypto_kem/sntrup4591761/ref/rq_rounded.c
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supercop-20181216/crypto_kem/sntrup4591761/ref/small.c
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supercop-20181216/crypto_kem/sntrup4591761/ref/swap.c
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libpqcrypto-20180314/crypto_kem/sntrup4591761/ref/int32_sort.h
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libpqcrypto-20180314/crypto_kem/sntrup4591761/ref/int32_sort.c
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libpqcrypto-20180314/crypto_kem/sntrup4591761/ref/small.h
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libpqcrypto-20180314/crypto_kem/sntrup4591761/ref/mod3.h
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libpqcrypto-20180314/crypto_kem/sntrup4591761/ref/modq.h
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libpqcrypto-20180314/crypto_kem/sntrup4591761/ref/params.h
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libpqcrypto-20180314/crypto_kem/sntrup4591761/ref/r3.h
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libpqcrypto-20180314/crypto_kem/sntrup4591761/ref/rq.h
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libpqcrypto-20180314/crypto_kem/sntrup4591761/ref/swap.h
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libpqcrypto-20180314/crypto_kem/sntrup4591761/ref/dec.c
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libpqcrypto-20180314/crypto_kem/sntrup4591761/ref/enc.c
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libpqcrypto-20180314/crypto_kem/sntrup4591761/ref/keypair.c
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libpqcrypto-20180314/crypto_kem/sntrup4591761/ref/r3_mult.c
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libpqcrypto-20180314/crypto_kem/sntrup4591761/ref/r3_recip.c
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libpqcrypto-20180314/crypto_kem/sntrup4591761/ref/randomsmall.c
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libpqcrypto-20180314/crypto_kem/sntrup4591761/ref/randomweightw.c
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libpqcrypto-20180314/crypto_kem/sntrup4591761/ref/rq.c
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libpqcrypto-20180314/crypto_kem/sntrup4591761/ref/rq_mult.c
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libpqcrypto-20180314/crypto_kem/sntrup4591761/ref/rq_recip3.c
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libpqcrypto-20180314/crypto_kem/sntrup4591761/ref/rq_round3.c
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libpqcrypto-20180314/crypto_kem/sntrup4591761/ref/rq_rounded.c
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libpqcrypto-20180314/crypto_kem/sntrup4591761/ref/small.c
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libpqcrypto-20180314/crypto_kem/sntrup4591761/ref/swap.c
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"
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###
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@ -40,7 +40,6 @@ for i in $FILES; do
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grep -v "extern crypto_int32 small_random32" |
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sed -e "s/crypto_kem_/crypto_kem_sntrup4591761_/g" \
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-e "s/smaller_mask/smaller_mask_${b}/g" \
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-e "s/void crypto_sort/void crypto_sort_int32/" \
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-e "s/^extern void /static void /" \
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-e "s/^void /static void /"
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echo
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