X-Git-Url: https://git.distorted.org.uk/u/mdw/putty/blobdiff_plain/01c034ad857128c51482a563befb374e38ebe668..32874aeac8dacbca26663777b39a79efc5d8dc4b:/sshdh.c diff --git a/sshdh.c b/sshdh.c index 845a72b6..edd05b68 100644 --- a/sshdh.c +++ b/sshdh.c @@ -39,7 +39,8 @@ static int need_to_free_pg; /* * Common DH initialisation. */ -static void dh_init(void) { +static void dh_init(void) +{ q = bignum_rshift(p, 1); qmask = bignum_bitmask(q); } @@ -47,7 +48,8 @@ static void dh_init(void) { /* * Initialise DH for the standard group1. */ -void dh_setup_group1(void) { +void dh_setup_group1(void) +{ p = bignum_from_bytes(P, sizeof(P)); g = bignum_from_bytes(G, sizeof(G)); dh_init(); @@ -56,7 +58,8 @@ void dh_setup_group1(void) { /* * Initialise DH for an alternative group. */ -void dh_setup_group(Bignum pval, Bignum gval) { +void dh_setup_group(Bignum pval, Bignum gval) +{ p = copybn(pval); g = copybn(gval); dh_init(); @@ -65,7 +68,8 @@ void dh_setup_group(Bignum pval, Bignum gval) { /* * Clean up. */ -void dh_cleanup(void) { +void dh_cleanup(void) +{ freebn(p); freebn(g); freebn(q); @@ -87,7 +91,8 @@ void dh_cleanup(void) { * Advances in Cryptology: Proceedings of Eurocrypt '96 * Springer-Verlag, May 1996. */ -Bignum dh_create_e(int nbits) { +Bignum dh_create_e(int nbits) +{ int i; int nbytes; @@ -101,7 +106,8 @@ Bignum dh_create_e(int nbits) { * Create a potential x, by ANDing a string of random bytes * with qmask. */ - if (x) freebn(x); + if (x) + freebn(x); if (nbits == 0 || nbits > bignum_bitcount(qmask)) { ssh1_write_bignum(buf, qmask); for (i = 2; i < nbytes; i++) @@ -134,7 +140,8 @@ Bignum dh_create_e(int nbits) { /* * DH stage 2: given a number f, compute K = f^x mod p. */ -Bignum dh_find_K(Bignum f) { +Bignum dh_find_K(Bignum f) +{ Bignum ret; ret = modpow(f, x, p); return ret;