// n = temp0*temp1
CHECK(d0_bignum_mul(n, temp0, temp1));
-
+
// d = challenge^-1 mod (temp0-1)(temp1-1)
CHECK(d0_bignum_mul(temp0, temp2, temp3));
CHECK(d0_bignum_mod_inv(d, challenge, temp0));
return 0;
}
+BOOL d0_rsa_generate_key_fastreject(size_t size, d0_fastreject_function reject, d0_blind_id_t *ctx, void *pass)
+{
+ // uses temp0 to temp4
+ int fail = 0;
+ int gcdfail = 0;
+ int pb = (size + 1)/2;
+ int qb = size - pb;
+ if(pb < 8)
+ pb = 8;
+ if(qb < 8)
+ qb = 8;
+ for (;;)
+ {
+ CHECK(d0_bignum_rand_bit_exact(temp0, pb));
+ if(d0_bignum_isprime(temp0, 10) == 0)
+ continue;
+ CHECK(d0_bignum_sub(temp2, temp0, one));
+ CHECK(d0_bignum_gcd(temp4, NULL, NULL, temp2, ctx->rsa_e));
+ if(!d0_bignum_cmp(temp4, one))
+ break;
+ if(++gcdfail == 3)
+ return 0;
+ ++gcdfail;
+ }
+ gcdfail = 0;
+ for (;;)
+ {
+ CHECK(d0_bignum_rand_bit_exact(temp1, qb));
+ if(!d0_bignum_cmp(temp1, temp0))
+ {
+ if(++fail == 3)
+ return 0;
+ }
+ fail = 0;
+
+ // n = temp0*temp1
+ CHECK(d0_bignum_mul(ctx->rsa_n, temp0, temp1));
+ if(reject(ctx, pass))
+ continue;
+
+ if(d0_bignum_isprime(temp1, 10) == 0)
+ continue;
+ CHECK(d0_bignum_sub(temp3, temp1, one));
+ CHECK(d0_bignum_gcd(temp4, NULL, NULL, temp3, ctx->rsa_e));
+ if(!d0_bignum_cmp(temp4, one))
+ break;
+ if(++gcdfail == 3)
+ return 0;
+ ++gcdfail;
+ }
+
+ // ctx->rsa_d = ctx->rsa_e^-1 mod (temp0-1)(temp1-1)
+ CHECK(d0_bignum_mul(temp0, temp2, temp3));
+ CHECK(d0_bignum_mod_inv(ctx->rsa_d, ctx->rsa_e, temp0));
+ return 1;
+fail:
+ return 0;
+}
+
void d0_blind_id_clear(d0_blind_id_t *ctx)
{
if(ctx->rsa_n) d0_bignum_free(ctx->rsa_n);
memset(ctx, 0, sizeof(*ctx));
}
-void d0_blind_id_copy(d0_blind_id_t *ctx, const d0_blind_id_t *src)
+WARN_UNUSED_RESULT BOOL d0_blind_id_copy(d0_blind_id_t *ctx, const d0_blind_id_t *src)
{
d0_blind_id_clear(ctx);
- if(src->rsa_n) ctx->rsa_n = d0_bignum_mov(NULL, src->rsa_n);
- if(src->rsa_e) ctx->rsa_e = d0_bignum_mov(NULL, src->rsa_e);
- if(src->rsa_d) ctx->rsa_d = d0_bignum_mov(NULL, src->rsa_d);
- if(src->schnorr_G) ctx->schnorr_G = d0_bignum_mov(NULL, src->schnorr_G);
- if(src->schnorr_s) ctx->schnorr_s = d0_bignum_mov(NULL, src->schnorr_s);
- if(src->schnorr_4_to_s) ctx->schnorr_4_to_s = d0_bignum_mov(NULL, ctx->schnorr_G);
- if(src->schnorr_4_to_s_signature) ctx->schnorr_4_to_s_signature = d0_bignum_mov(NULL, src->schnorr_4_to_s_signature);
- if(src->rsa_blind_signature_camouflage) ctx->rsa_blind_signature_camouflage = d0_bignum_mov(NULL, src->rsa_blind_signature_camouflage);
- if(src->r) ctx->r = d0_bignum_mov(NULL, src->r);
- if(src->challenge) ctx->challenge = d0_bignum_mov(NULL, src->challenge);
- if(src->other_4_to_r) ctx->other_4_to_r = d0_bignum_mov(NULL, src->other_4_to_r);
+ if(src->rsa_n) CHECK_ASSIGN(ctx->rsa_n, d0_bignum_mov(NULL, src->rsa_n));
+ if(src->rsa_e) CHECK_ASSIGN(ctx->rsa_e, d0_bignum_mov(NULL, src->rsa_e));
+ if(src->rsa_d) CHECK_ASSIGN(ctx->rsa_d, d0_bignum_mov(NULL, src->rsa_d));
+ if(src->schnorr_G) CHECK_ASSIGN(ctx->schnorr_G, d0_bignum_mov(NULL, src->schnorr_G));
+ if(src->schnorr_s) CHECK_ASSIGN(ctx->schnorr_s, d0_bignum_mov(NULL, src->schnorr_s));
+ if(src->schnorr_4_to_s) CHECK_ASSIGN(ctx->schnorr_4_to_s, d0_bignum_mov(NULL, ctx->schnorr_G));
+ if(src->schnorr_4_to_s_signature) CHECK_ASSIGN(ctx->schnorr_4_to_s_signature, d0_bignum_mov(NULL, src->schnorr_4_to_s_signature));
+ if(src->rsa_blind_signature_camouflage) CHECK_ASSIGN(ctx->rsa_blind_signature_camouflage, d0_bignum_mov(NULL, src->rsa_blind_signature_camouflage));
+ if(src->r) CHECK_ASSIGN(ctx->r, d0_bignum_mov(NULL, src->r));
+ if(src->challenge) CHECK_ASSIGN(ctx->challenge, d0_bignum_mov(NULL, src->challenge));
+ if(src->other_4_to_r) CHECK_ASSIGN(ctx->other_4_to_r, d0_bignum_mov(NULL, src->other_4_to_r));
memcpy(ctx->msg, src->msg, sizeof(ctx->msg));
ctx->msglen = src->msglen;
memcpy(ctx->msghash, src->msghash, sizeof(ctx->msghash));
+ return 0;
+fail:
+ d0_blind_id_clear(ctx);
+ return 1;
}
-WARN_UNUSED_RESULT BOOL d0_blind_id_generate_private_key(d0_blind_id_t *ctx, int k)
+WARN_UNUSED_RESULT BOOL d0_blind_id_generate_private_key_fastreject(d0_blind_id_t *ctx, int k, d0_fastreject_function reject, void *pass)
{
REPLACING(rsa_e); REPLACING(rsa_d); REPLACING(rsa_n);
CHECK_ASSIGN(ctx->rsa_e, d0_bignum_int(ctx->rsa_e, 65537));
CHECK_ASSIGN(ctx->rsa_d, d0_bignum_zero(ctx->rsa_d));
CHECK_ASSIGN(ctx->rsa_n, d0_bignum_zero(ctx->rsa_n));
- CHECK(d0_rsa_generate_key(k+1, ctx->rsa_e, ctx->rsa_d, ctx->rsa_n)); // must fit G for sure
+ if(reject)
+ CHECK(d0_rsa_generate_key_fastreject(k+1, reject, ctx, pass)); // must fit G for sure
+ else
+ CHECK(d0_rsa_generate_key(k+1, ctx->rsa_e, ctx->rsa_d, ctx->rsa_n)); // must fit G for sure
return 1;
fail:
return 0;
}
+WARN_UNUSED_RESULT BOOL d0_blind_id_generate_private_key(d0_blind_id_t *ctx, int k)
+{
+ return d0_blind_id_generate_private_key_fastreject(ctx, k, NULL, NULL);
+}
+
WARN_UNUSED_RESULT BOOL d0_blind_id_read_private_key(d0_blind_id_t *ctx, const char *inbuf, size_t inbuflen)
{
d0_iobuf_t *in = NULL;
return 0;
}
-WARN_UNUSED_RESULT BOOL d0_blind_id_write_private_key(d0_blind_id_t *ctx, char *outbuf, size_t *outbuflen)
+WARN_UNUSED_RESULT BOOL d0_blind_id_write_private_key(const d0_blind_id_t *ctx, char *outbuf, size_t *outbuflen)
{
d0_iobuf_t *out = NULL;
return 0;
}
-WARN_UNUSED_RESULT BOOL d0_blind_id_write_public_key(d0_blind_id_t *ctx, char *outbuf, size_t *outbuflen)
+WARN_UNUSED_RESULT BOOL d0_blind_id_write_public_key(const d0_blind_id_t *ctx, char *outbuf, size_t *outbuflen)
{
d0_iobuf_t *out = NULL;
return 0;
}
-WARN_UNUSED_RESULT BOOL d0_blind_id_fingerprint64_public_key(d0_blind_id_t *ctx, char *outbuf, size_t *outbuflen)
+WARN_UNUSED_RESULT BOOL d0_blind_id_fingerprint64_public_key(const d0_blind_id_t *ctx, char *outbuf, size_t *outbuflen)
{
d0_iobuf_t *out = NULL;
static unsigned char convbuf[2048];
d0_iobuf_t *conv = NULL;
size_t sz, n;
- USING(schnorr_4_to_s);
+ USING(rsa_n); USING(rsa_e);
out = d0_iobuf_open_write(outbuf, *outbuflen);
conv = d0_iobuf_open_write(convbuf, sizeof(convbuf));
return 0;
}
-WARN_UNUSED_RESULT BOOL d0_blind_id_write_private_id_modulus(d0_blind_id_t *ctx, char *outbuf, size_t *outbuflen)
+WARN_UNUSED_RESULT BOOL d0_blind_id_write_private_id_modulus(const d0_blind_id_t *ctx, char *outbuf, size_t *outbuflen)
{
d0_iobuf_t *out = NULL;
return 0;
}
-WARN_UNUSED_RESULT BOOL d0_blind_id_answer_private_id_request(d0_blind_id_t *ctx, const char *inbuf, size_t inbuflen, char *outbuf, size_t *outbuflen)
+WARN_UNUSED_RESULT BOOL d0_blind_id_answer_private_id_request(const d0_blind_id_t *ctx, const char *inbuf, size_t inbuflen, char *outbuf, size_t *outbuflen)
{
d0_iobuf_t *in = NULL;
d0_iobuf_t *out = NULL;
return 0;
}
+WARN_UNUSED_RESULT BOOL d0_blind_id_read_private_id_request_camouflage(d0_blind_id_t *ctx, const char *inbuf, size_t inbuflen)
+{
+ d0_iobuf_t *in = NULL;
+
+ REPLACING(rsa_blind_signature_camouflage);
+
+ in = d0_iobuf_open_read(inbuf, inbuflen);
+
+ CHECK_ASSIGN(ctx->rsa_blind_signature_camouflage, d0_iobuf_read_bignum(in, ctx->rsa_blind_signature_camouflage));
+
+ return d0_iobuf_close(in, NULL);
+
+fail:
+ d0_iobuf_close(in, NULL);
+ return 0;
+}
+
+WARN_UNUSED_RESULT BOOL d0_blind_id_write_private_id_request_camouflage(const d0_blind_id_t *ctx, char *outbuf, size_t *outbuflen)
+{
+ d0_iobuf_t *out = NULL;
+
+ USING(rsa_blind_signature_camouflage);
+
+ out = d0_iobuf_open_write(outbuf, *outbuflen);
+
+ CHECK(d0_iobuf_write_bignum(out, ctx->rsa_blind_signature_camouflage));
+
+ return d0_iobuf_close(out, outbuflen);
+
+fail:
+ d0_iobuf_close(out, outbuflen);
+ return 0;
+}
+
WARN_UNUSED_RESULT BOOL d0_blind_id_read_private_id(d0_blind_id_t *ctx, const char *inbuf, size_t inbuflen)
{
d0_iobuf_t *in = NULL;
return 0;
}
-WARN_UNUSED_RESULT BOOL d0_blind_id_write_private_id(d0_blind_id_t *ctx, char *outbuf, size_t *outbuflen)
+WARN_UNUSED_RESULT BOOL d0_blind_id_write_private_id(const d0_blind_id_t *ctx, char *outbuf, size_t *outbuflen)
{
d0_iobuf_t *out = NULL;
return 0;
}
-WARN_UNUSED_RESULT BOOL d0_blind_id_write_public_id(d0_blind_id_t *ctx, char *outbuf, size_t *outbuflen)
+WARN_UNUSED_RESULT BOOL d0_blind_id_write_public_id(const d0_blind_id_t *ctx, char *outbuf, size_t *outbuflen)
{
d0_iobuf_t *out = NULL;
return 0;
}
-WARN_UNUSED_RESULT BOOL d0_blind_id_fingerprint64_public_id(d0_blind_id_t *ctx, char *outbuf, size_t *outbuflen)
+WARN_UNUSED_RESULT BOOL d0_blind_id_fingerprint64_public_id(const d0_blind_id_t *ctx, char *outbuf, size_t *outbuflen)
{
d0_iobuf_t *out = NULL;
static unsigned char convbuf[1024];
return 0;
}
-BOOL d0_blind_id_sessionkey_public_id(d0_blind_id_t *ctx, char *outbuf, size_t *outbuflen)
+BOOL d0_blind_id_sessionkey_public_id(const d0_blind_id_t *ctx, char *outbuf, size_t *outbuflen)
{
d0_iobuf_t *out = NULL;
static unsigned char convbuf[1024];
projects / xonotic / d0_blind_id.git / blobdiff