0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xC9, 0x0F, 0xDA, 0xA2,
0x21, 0x68, 0xC2, 0x34, 0xC4, 0xC6, 0x62, 0x8B, 0x80, 0xDC, 0x1C, 0xD1,
0x29, 0x02, 0x4E, 0x08, 0x8A, 0x67, 0xCC, 0x74, 0x02, 0x0B, 0xBE, 0xA6,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xC9, 0x0F, 0xDA, 0xA2,
0x21, 0x68, 0xC2, 0x34, 0xC4, 0xC6, 0x62, 0x8B, 0x80, 0xDC, 0x1C, 0xD1,
0x29, 0x02, 0x4E, 0x08, 0x8A, 0x67, 0xCC, 0x74, 0x02, 0x0B, 0xBE, 0xA6,
-static Bignum x, e, p, q, qmask, g;
-static int need_to_free_pg;
+struct dh_ctx {
+ Bignum x, e, p, q, qmask, g;
+};
-static void dh_init(void) {
- q = bignum_rshift(p, 1);
- qmask = bignum_bitmask(q);
+static void dh_init(struct dh_ctx *ctx)
+{
+ ctx->q = bignum_rshift(ctx->p, 1);
+ ctx->qmask = bignum_bitmask(ctx->q);
+ ctx->x = ctx->e = NULL;
-void dh_setup_group1(void) {
- p = bignum_from_bytes(P, sizeof(P));
- g = bignum_from_bytes(G, sizeof(G));
- dh_init();
+void *dh_setup_group1(void)
+{
+ struct dh_ctx *ctx = smalloc(sizeof(struct dh_ctx));
+ ctx->p = bignum_from_bytes(P, sizeof(P));
+ ctx->g = bignum_from_bytes(G, sizeof(G));
+ dh_init(ctx);
+ return ctx;
* Advances in Cryptology: Proceedings of Eurocrypt '96
* Springer-Verlag, May 1996.
*/
* Advances in Cryptology: Proceedings of Eurocrypt '96
* Springer-Verlag, May 1996.
*/
- if (x) freebn(x);
- if (nbits == 0 || nbits > ssh1_bignum_bitcount(qmask)) {
- ssh1_write_bignum(buf, qmask);
+ if (ctx->x)
+ freebn(ctx->x);
+ if (nbits == 0 || nbits > bignum_bitcount(ctx->qmask)) {
+ ssh1_write_bignum(buf, ctx->qmask);