int DH_check(const DH *dh, int *ret)
{
int ok = 0;
BN_CTX *ctx = NULL;
BN_ULONG l;
BIGNUM *q = NULL;
*ret = 0;
ctx = BN_CTX_new();
if (ctx == NULL)
goto err;
q = BN_new();
if (q == NULL)
goto err;
if (BN_is_word(dh->g, DH_GENERATOR_2)) {
l = BN_mod_word(dh->p, 24);
if (l != 11)
*ret |= DH_NOT_SUITABLE_GENERATOR;
}
# if 0
else if (BN_is_word(dh->g, DH_GENERATOR_3)) {
l = BN_mod_word(dh->p, 12);
if (l != 5)
*ret |= DH_NOT_SUITABLE_GENERATOR;
}
# endif
else if (BN_is_word(dh->g, DH_GENERATOR_5)) {
l = BN_mod_word(dh->p, 10);
if ((l != 3) && (l != 7))
*ret |= DH_NOT_SUITABLE_GENERATOR;
} else
*ret |= DH_UNABLE_TO_CHECK_GENERATOR;
if (!BN_is_prime_ex(dh->p, BN_prime_checks, ctx, NULL))
*ret |= DH_CHECK_P_NOT_PRIME;
else {
if (!BN_rshift1(q, dh->p))
goto err;
if (!BN_is_prime_ex(q, BN_prime_checks, ctx, NULL))
*ret |= DH_CHECK_P_NOT_SAFE_PRIME;
}
ok = 1;
err:
if (ctx != NULL)
BN_CTX_free(ctx);
if (q != NULL)
BN_free(q);
return (ok);
}
int BN_is_prime(const BIGNUM *a, int checks, void (*callback)(int,int,void *),
BN_CTX *ctx_passed, void *cb_arg)
{
BN_GENCB cb;
BN_GENCB_set_old(&cb, callback, cb_arg);
return BN_is_prime_ex(a, checks, ctx_passed, &cb);
}
/* Return the next prime number after its arg */
unsigned int
next_prime_after(unsigned int val)
{
/* Calculate primes on the fly using OpenSSL. Takes up less space
than using a table, deals better with pathologically large tables. */
static BIGNUM *p = NULL;
static BN_CTX *ctx = NULL;
if (!ctx)
ctx = BN_CTX_new();
if (!p)
p = BN_new();
/* Make sure we only try odd numbers; evens can't be primes. */
if (val & 0x1)
val += 2;
else
val += 1;
while (1) {
BN_set_word(p, val);
if (BN_is_prime_ex(p, BN_prime_checks, ctx, NULL) > 0)
break;
val += 2;
}
return val;
}
static int
old_dsa_priv_decode(EVP_PKEY *pkey, const unsigned char **pder, int derlen)
{
DSA *dsa;
BN_CTX *ctx = NULL;
BIGNUM *j, *p1, *newp1;
if (!(dsa = d2i_DSAPrivateKey(NULL, pder, derlen))) {
DSAerror(ERR_R_DSA_LIB);
return 0;
}
ctx = BN_CTX_new();
if (ctx == NULL)
goto err;
/*
* Check that p and q are consistent with each other.
*/
j = BN_CTX_get(ctx);
p1 = BN_CTX_get(ctx);
newp1 = BN_CTX_get(ctx);
if (j == NULL || p1 == NULL || newp1 == NULL)
goto err;
/* p1 = p - 1 */
if (BN_sub(p1, dsa->p, BN_value_one()) == 0)
goto err;
/* j = (p - 1) / q */
if (BN_div_ct(j, NULL, p1, dsa->q, ctx) == 0)
goto err;
/* q * j should == p - 1 */
if (BN_mul(newp1, dsa->q, j, ctx) == 0)
goto err;
if (BN_cmp(newp1, p1) != 0) {
DSAerror(DSA_R_BAD_Q_VALUE);
goto err;
}
/*
* Check that q is not a composite number.
*/
if (BN_is_prime_ex(dsa->q, BN_prime_checks, ctx, NULL) <= 0) {
DSAerror(DSA_R_BAD_Q_VALUE);
goto err;
}
BN_CTX_free(ctx);
EVP_PKEY_assign_DSA(pkey, dsa);
return 1;
err:
BN_CTX_free(ctx);
DSA_free(dsa);
return 0;
}
static int dss_paramcheck(int nmod, BIGNUM *p, BIGNUM *q, BIGNUM *g,
BN_CTX *ctx)
{
BIGNUM *rem = NULL;
if (BN_num_bits(p) != nmod)
return 0;
if (BN_num_bits(q) != 160)
return 0;
if (BN_is_prime_ex(p, BN_prime_checks, ctx, NULL) != 1)
return 0;
if (BN_is_prime_ex(q, BN_prime_checks, ctx, NULL) != 1)
return 0;
rem = BN_new();
if (!BN_mod(rem, p, q, ctx) || !BN_is_one(rem)
|| (BN_cmp(g, BN_value_one()) <= 0)
|| !BN_mod_exp(rem, g, q, p, ctx) || !BN_is_one(rem)) {
BN_free(rem);
return 0;
}
/* Todo: check g */
BN_free(rem);
return 1;
}
BIGNUM *
DH_get_q(const DH *dh, BN_CTX *ctx)
{
BIGNUM *q_new = NULL, *bn = NULL;
int i;
const BIGNUM *p, *q;
check(dh, "Invalid arguments");
DH_get0_pqg(dh, &p, &q, NULL);
if (!q) {
q_new = BN_new();
bn = BN_dup(p);
/* DH primes should be strong, based on a Sophie Germain prime q
* p=(2*q)+1 or (p-1)/2=q */
if (!q_new || !bn ||
!BN_sub_word(bn, 1) ||
!BN_rshift1(q_new, bn)) {
goto err;
}
} else {
q_new = BN_dup(q);
}
/* q should always be prime */
i = BN_is_prime_ex(q_new, BN_prime_checks, ctx, NULL);
if (i <= 0) {
if (i == 0)
log_err("Unable to get Sophie Germain prime");
goto err;
}
return q_new;
err:
if (bn)
BN_clear_free(bn);
if (q_new)
BN_clear_free(q_new);
return NULL;
}
static void primes()
{
char buf[10240];
char lbuf[10240];
char *keyword, *value;
while (fgets(buf, sizeof buf, stdin) != NULL) {
fputs(buf, stdout);
if (!parse_line(&keyword, &value, lbuf, buf))
continue;
if (!strcmp(keyword, "Prime")) {
BIGNUM *pp;
pp = BN_new();
do_hex2bn(&pp, value);
printf("result= %c\n",
BN_is_prime_ex(pp, 20, NULL, NULL) ? 'P' : 'F');
}
}
}
int DH_check(const DH *dh, int *ret)
{
int ok = 0;
BN_CTX *ctx = NULL;
BN_ULONG l;
BIGNUM *t1 = NULL, *t2 = NULL;
*ret = 0;
ctx = BN_CTX_new();
if (ctx == NULL)
goto err;
BN_CTX_start(ctx);
t1 = BN_CTX_get(ctx);
if (t1 == NULL)
goto err;
t2 = BN_CTX_get(ctx);
if (t2 == NULL)
goto err;
if (dh->q) {
if (BN_cmp(dh->g, BN_value_one()) <= 0)
*ret |= DH_NOT_SUITABLE_GENERATOR;
else if (BN_cmp(dh->g, dh->p) >= 0)
*ret |= DH_NOT_SUITABLE_GENERATOR;
else {
/* Check g^q == 1 mod p */
if (!BN_mod_exp(t1, dh->g, dh->q, dh->p, ctx))
goto err;
if (!BN_is_one(t1))
*ret |= DH_NOT_SUITABLE_GENERATOR;
}
if (!BN_is_prime_ex(dh->q, BN_prime_checks, ctx, NULL))
*ret |= DH_CHECK_Q_NOT_PRIME;
/* Check p == 1 mod q i.e. q divides p - 1 */
if (!BN_div(t1, t2, dh->p, dh->q, ctx))
goto err;
if (!BN_is_one(t2))
*ret |= DH_CHECK_INVALID_Q_VALUE;
if (dh->j && BN_cmp(dh->j, t1))
*ret |= DH_CHECK_INVALID_J_VALUE;
} else if (BN_is_word(dh->g, DH_GENERATOR_2)) {
l = BN_mod_word(dh->p, 24);
if (l != 11)
*ret |= DH_NOT_SUITABLE_GENERATOR;
}
#if 0
else if (BN_is_word(dh->g, DH_GENERATOR_3)) {
l = BN_mod_word(dh->p, 12);
if (l != 5)
*ret |= DH_NOT_SUITABLE_GENERATOR;
}
#endif
else if (BN_is_word(dh->g, DH_GENERATOR_5)) {
l = BN_mod_word(dh->p, 10);
if ((l != 3) && (l != 7))
*ret |= DH_NOT_SUITABLE_GENERATOR;
} else
*ret |= DH_UNABLE_TO_CHECK_GENERATOR;
if (!BN_is_prime_ex(dh->p, BN_prime_checks, ctx, NULL))
*ret |= DH_CHECK_P_NOT_PRIME;
else if (!dh->q) {
if (!BN_rshift1(t1, dh->p))
goto err;
if (!BN_is_prime_ex(t1, BN_prime_checks, ctx, NULL))
*ret |= DH_CHECK_P_NOT_SAFE_PRIME;
}
ok = 1;
err:
if (ctx != NULL) {
BN_CTX_end(ctx);
BN_CTX_free(ctx);
}
return (ok);
}
int prime_main(int argc, char **argv)
{
BIGNUM *bn = NULL;
int hex = 0, checks = 20, generate = 0, bits = 0, safe = 0, ret = 1;
char *prog;
OPTION_CHOICE o;
prog = opt_init(argc, argv, prime_options);
while ((o = opt_next()) != OPT_EOF) {
switch (o) {
case OPT_EOF:
case OPT_ERR:
BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
goto end;
case OPT_HELP:
opt_help(prime_options);
ret = 0;
goto end;
case OPT_HEX:
hex = 1;
break;
case OPT_GENERATE:
generate = 1;
break;
case OPT_BITS:
bits = atoi(opt_arg());
break;
case OPT_SAFE:
safe = 1;
break;
case OPT_CHECKS:
checks = atoi(opt_arg());
break;
}
}
argc = opt_num_rest();
argv = opt_rest();
if (argc == 0 && !generate) {
BIO_printf(bio_err, "%s: No prime specified\n", prog);
goto end;
}
if (generate) {
char *s;
if (!bits) {
BIO_printf(bio_err, "Specify the number of bits.\n");
goto end;
}
bn = BN_new();
BN_generate_prime_ex(bn, bits, safe, NULL, NULL, NULL);
s = hex ? BN_bn2hex(bn) : BN_bn2dec(bn);
BIO_printf(bio_out, "%s\n", s);
OPENSSL_free(s);
} else {
for ( ; *argv; argv++) {
if (hex)
BN_hex2bn(&bn, argv[0]);
else
BN_dec2bn(&bn, argv[0]);
BN_print(bio_out, bn);
BIO_printf(bio_out, " (%s) %s prime\n",
argv[0],
BN_is_prime_ex(bn, checks, NULL, NULL)
? "is" : "is not");
}
}
BN_free(bn);
end:
return ret;
}
int
prime_main(int argc, char **argv)
{
int hex = 0;
int checks = 20;
int generate = 0;
int bits = 0;
int safe = 0;
BIGNUM *bn = NULL;
BIO *bio_out;
--argc;
++argv;
while (argc >= 1 && **argv == '-') {
if (!strcmp(*argv, "-hex"))
hex = 1;
else if (!strcmp(*argv, "-generate"))
generate = 1;
else if (!strcmp(*argv, "-bits"))
if (--argc < 1)
goto bad;
else
bits = atoi(*++argv);
else if (!strcmp(*argv, "-safe"))
safe = 1;
else if (!strcmp(*argv, "-checks"))
if (--argc < 1)
goto bad;
else
checks = atoi(*++argv);
else {
BIO_printf(bio_err, "Unknown option '%s'\n", *argv);
goto bad;
}
--argc;
++argv;
}
if (argv[0] == NULL && !generate) {
BIO_printf(bio_err, "No prime specified\n");
goto bad;
}
if ((bio_out = BIO_new(BIO_s_file())) != NULL) {
BIO_set_fp(bio_out, stdout, BIO_NOCLOSE);
}
if (generate) {
char *s;
if (!bits) {
BIO_printf(bio_err, "Specifiy the number of bits.\n");
return 1;
}
bn = BN_new();
BN_generate_prime_ex(bn, bits, safe, NULL, NULL, NULL);
s = hex ? BN_bn2hex(bn) : BN_bn2dec(bn);
BIO_printf(bio_out, "%s\n", s);
free(s);
} else {
if (hex)
BN_hex2bn(&bn, argv[0]);
else
BN_dec2bn(&bn, argv[0]);
BN_print(bio_out, bn);
BIO_printf(bio_out, " is %sprime\n",
BN_is_prime_ex(bn, checks, NULL, NULL) ? "" : "not ");
}
BN_free(bn);
BIO_free_all(bio_out);
return 0;
bad:
BIO_printf(bio_err, "options are\n");
BIO_printf(bio_err, "%-14s hex\n", "-hex");
BIO_printf(bio_err, "%-14s number of checks\n", "-checks <n>");
return 1;
}
int RSA_check_key_ex(const RSA *key, BN_GENCB *cb)
{
BIGNUM *i, *j, *k, *l, *m;
BN_CTX *ctx;
int ret = 1, ex_primes = 0, idx;
RSA_PRIME_INFO *pinfo;
if (key->p == NULL || key->q == NULL || key->n == NULL
|| key->e == NULL || key->d == NULL) {
RSAerr(RSA_F_RSA_CHECK_KEY_EX, RSA_R_VALUE_MISSING);
return 0;
}
/* multi-prime? */
if (key->version == RSA_ASN1_VERSION_MULTI) {
ex_primes = sk_RSA_PRIME_INFO_num(key->prime_infos);
if (ex_primes <= 0
|| (ex_primes + 2) > rsa_multip_cap(BN_num_bits(key->n))) {
RSAerr(RSA_F_RSA_CHECK_KEY_EX, RSA_R_INVALID_MULTI_PRIME_KEY);
return 0;
}
}
i = BN_new();
j = BN_new();
k = BN_new();
l = BN_new();
m = BN_new();
ctx = BN_CTX_new();
if (i == NULL || j == NULL || k == NULL || l == NULL
|| m == NULL || ctx == NULL) {
ret = -1;
RSAerr(RSA_F_RSA_CHECK_KEY_EX, ERR_R_MALLOC_FAILURE);
goto err;
}
if (BN_is_one(key->e)) {
ret = 0;
RSAerr(RSA_F_RSA_CHECK_KEY_EX, RSA_R_BAD_E_VALUE);
}
if (!BN_is_odd(key->e)) {
ret = 0;
RSAerr(RSA_F_RSA_CHECK_KEY_EX, RSA_R_BAD_E_VALUE);
}
/* p prime? */
if (BN_is_prime_ex(key->p, BN_prime_checks, NULL, cb) != 1) {
ret = 0;
RSAerr(RSA_F_RSA_CHECK_KEY_EX, RSA_R_P_NOT_PRIME);
}
/* q prime? */
if (BN_is_prime_ex(key->q, BN_prime_checks, NULL, cb) != 1) {
ret = 0;
RSAerr(RSA_F_RSA_CHECK_KEY_EX, RSA_R_Q_NOT_PRIME);
}
/* r_i prime? */
for (idx = 0; idx < ex_primes; idx++) {
pinfo = sk_RSA_PRIME_INFO_value(key->prime_infos, idx);
if (BN_is_prime_ex(pinfo->r, BN_prime_checks, NULL, cb) != 1) {
ret = 0;
RSAerr(RSA_F_RSA_CHECK_KEY_EX, RSA_R_MP_R_NOT_PRIME);
}
}
/* n = p*q * r_3...r_i? */
if (!BN_mul(i, key->p, key->q, ctx)) {
ret = -1;
goto err;
}
for (idx = 0; idx < ex_primes; idx++) {
pinfo = sk_RSA_PRIME_INFO_value(key->prime_infos, idx);
if (!BN_mul(i, i, pinfo->r, ctx)) {
ret = -1;
goto err;
}
}
if (BN_cmp(i, key->n) != 0) {
ret = 0;
if (ex_primes)
RSAerr(RSA_F_RSA_CHECK_KEY_EX,
RSA_R_N_DOES_NOT_EQUAL_PRODUCT_OF_PRIMES);
else
RSAerr(RSA_F_RSA_CHECK_KEY_EX, RSA_R_N_DOES_NOT_EQUAL_P_Q);
}
/* d*e = 1 mod \lambda(n)? */
if (!BN_sub(i, key->p, BN_value_one())) {
ret = -1;
goto err;
}
if (!BN_sub(j, key->q, BN_value_one())) {
ret = -1;
goto err;
}
/* now compute k = \lambda(n) = LCM(i, j, r_3 - 1...) */
if (!BN_mul(l, i, j, ctx)) {
ret = -1;
goto err;
}
if (!BN_gcd(m, i, j, ctx)) {
ret = -1;
goto err;
}
for (idx = 0; idx < ex_primes; idx++) {
pinfo = sk_RSA_PRIME_INFO_value(key->prime_infos, idx);
if (!BN_sub(k, pinfo->r, BN_value_one())) {
ret = -1;
goto err;
}
if (!BN_mul(l, l, k, ctx)) {
ret = -1;
goto err;
}
if (!BN_gcd(m, m, k, ctx)) {
ret = -1;
goto err;
}
}
if (!BN_div(k, NULL, l, m, ctx)) { /* remainder is 0 */
ret = -1;
goto err;
}
if (!BN_mod_mul(i, key->d, key->e, k, ctx)) {
ret = -1;
goto err;
}
if (!BN_is_one(i)) {
ret = 0;
RSAerr(RSA_F_RSA_CHECK_KEY_EX, RSA_R_D_E_NOT_CONGRUENT_TO_1);
}
if (key->dmp1 != NULL && key->dmq1 != NULL && key->iqmp != NULL) {
/* dmp1 = d mod (p-1)? */
if (!BN_sub(i, key->p, BN_value_one())) {
ret = -1;
goto err;
}
if (!BN_mod(j, key->d, i, ctx)) {
ret = -1;
goto err;
}
if (BN_cmp(j, key->dmp1) != 0) {
ret = 0;
RSAerr(RSA_F_RSA_CHECK_KEY_EX, RSA_R_DMP1_NOT_CONGRUENT_TO_D);
}
/* dmq1 = d mod (q-1)? */
if (!BN_sub(i, key->q, BN_value_one())) {
ret = -1;
goto err;
}
if (!BN_mod(j, key->d, i, ctx)) {
ret = -1;
goto err;
}
if (BN_cmp(j, key->dmq1) != 0) {
ret = 0;
RSAerr(RSA_F_RSA_CHECK_KEY_EX, RSA_R_DMQ1_NOT_CONGRUENT_TO_D);
}
/* iqmp = q^-1 mod p? */
if (!BN_mod_inverse(i, key->q, key->p, ctx)) {
ret = -1;
goto err;
}
if (BN_cmp(i, key->iqmp) != 0) {
ret = 0;
RSAerr(RSA_F_RSA_CHECK_KEY_EX, RSA_R_IQMP_NOT_INVERSE_OF_Q);
}
}
for (idx = 0; idx < ex_primes; idx++) {
pinfo = sk_RSA_PRIME_INFO_value(key->prime_infos, idx);
/* d_i = d mod (r_i - 1)? */
if (!BN_sub(i, pinfo->r, BN_value_one())) {
ret = -1;
goto err;
}
if (!BN_mod(j, key->d, i, ctx)) {
ret = -1;
goto err;
}
if (BN_cmp(j, pinfo->d) != 0) {
ret = 0;
RSAerr(RSA_F_RSA_CHECK_KEY_EX, RSA_R_MP_EXPONENT_NOT_CONGRUENT_TO_D);
}
/* t_i = R_i ^ -1 mod r_i ? */
if (!BN_mod_inverse(i, pinfo->pp, pinfo->r, ctx)) {
ret = -1;
goto err;
}
if (BN_cmp(i, pinfo->t) != 0) {
ret = 0;
RSAerr(RSA_F_RSA_CHECK_KEY_EX, RSA_R_MP_COEFFICIENT_NOT_INVERSE_OF_R);
}
}
err:
BN_free(i);
BN_free(j);
BN_free(k);
BN_free(l);
BN_free(m);
BN_CTX_free(ctx);
return ret;
}
/**
* public static native int BN_mod_inverse(int, int, int, int)
*/
static jboolean NativeBN_BN_is_prime_ex(JNIEnv* env, jclass cls, BIGNUM* p, int nchecks, BN_CTX* ctx, jint cb) {
if (!oneValidHandle(env, p)) return FALSE;
return BN_is_prime_ex(p, nchecks, ctx, cb);
}
static jboolean NativeBN_BN_is_prime_ex(JNIEnv* env, jclass, BIGNUM* p, int nchecks, jint cb) {
if (!oneValidHandle(env, p)) return JNI_FALSE;
Unique_BN_CTX ctx(BN_CTX_new());
return BN_is_prime_ex(p, nchecks, ctx.get(), reinterpret_cast<BN_GENCB*>(cb));
}
void prime_field_tests()
{
BN_CTX *ctx = NULL;
BIGNUM *p, *a, *b;
EC_GROUP *group;
EC_GROUP *P_160 = NULL, *P_192 = NULL, *P_224 = NULL, *P_256 = NULL, *P_384 = NULL, *P_521 = NULL;
EC_POINT *P, *Q, *R;
BIGNUM *x, *y, *z;
unsigned char buf[100];
size_t i, len;
int k;
#if 1 /* optional */
ctx = BN_CTX_new();
if (!ctx) ABORT;
#endif
p = BN_new();
a = BN_new();
b = BN_new();
if (!p || !a || !b) ABORT;
if (!BN_hex2bn(&p, "17")) ABORT;
if (!BN_hex2bn(&a, "1")) ABORT;
if (!BN_hex2bn(&b, "1")) ABORT;
group = EC_GROUP_new(EC_GFp_mont_method()); /* applications should use EC_GROUP_new_curve_GFp
* so that the library gets to choose the EC_METHOD */
if (!group) ABORT;
if (!EC_GROUP_set_curve_GFp(group, p, a, b, ctx)) ABORT;
{
EC_GROUP *tmp;
tmp = EC_GROUP_new(EC_GROUP_method_of(group));
if (!tmp) ABORT;
if (!EC_GROUP_copy(tmp, group)) ABORT;
EC_GROUP_free(group);
group = tmp;
}
if (!EC_GROUP_get_curve_GFp(group, p, a, b, ctx)) ABORT;
fprintf(stdout, "Curve defined by Weierstrass equation\n y^2 = x^3 + a*x + b (mod 0x");
BN_print_fp(stdout, p);
fprintf(stdout, ")\n a = 0x");
BN_print_fp(stdout, a);
fprintf(stdout, "\n b = 0x");
BN_print_fp(stdout, b);
fprintf(stdout, "\n");
P = EC_POINT_new(group);
Q = EC_POINT_new(group);
R = EC_POINT_new(group);
if (!P || !Q || !R) ABORT;
if (!EC_POINT_set_to_infinity(group, P)) ABORT;
if (!EC_POINT_is_at_infinity(group, P)) ABORT;
buf[0] = 0;
if (!EC_POINT_oct2point(group, Q, buf, 1, ctx)) ABORT;
if (!EC_POINT_add(group, P, P, Q, ctx)) ABORT;
if (!EC_POINT_is_at_infinity(group, P)) ABORT;
x = BN_new();
y = BN_new();
z = BN_new();
if (!x || !y || !z) ABORT;
if (!BN_hex2bn(&x, "D")) ABORT;
if (!EC_POINT_set_compressed_coordinates_GFp(group, Q, x, 1, ctx)) ABORT;
if (!EC_POINT_is_on_curve(group, Q, ctx))
{
if (!EC_POINT_get_affine_coordinates_GFp(group, Q, x, y, ctx)) ABORT;
fprintf(stderr, "Point is not on curve: x = 0x");
BN_print_fp(stderr, x);
fprintf(stderr, ", y = 0x");
BN_print_fp(stderr, y);
fprintf(stderr, "\n");
ABORT;
}
fprintf(stdout, "A cyclic subgroup:\n");
k = 100;
do
{
if (k-- == 0) ABORT;
if (EC_POINT_is_at_infinity(group, P))
fprintf(stdout, " point at infinity\n");
else
{
if (!EC_POINT_get_affine_coordinates_GFp(group, P, x, y, ctx)) ABORT;
fprintf(stdout, " x = 0x");
BN_print_fp(stdout, x);
fprintf(stdout, ", y = 0x");
BN_print_fp(stdout, y);
fprintf(stdout, "\n");
}
if (!EC_POINT_copy(R, P)) ABORT;
if (!EC_POINT_add(group, P, P, Q, ctx)) ABORT;
#if 0 /* optional */
{
EC_POINT *points[3];
points[0] = R;
points[1] = Q;
points[2] = P;
if (!EC_POINTs_make_affine(group, 2, points, ctx)) ABORT;
}
#endif
}
while (!EC_POINT_is_at_infinity(group, P));
if (!EC_POINT_add(group, P, Q, R, ctx)) ABORT;
if (!EC_POINT_is_at_infinity(group, P)) ABORT;
len = EC_POINT_point2oct(group, Q, POINT_CONVERSION_COMPRESSED, buf, sizeof buf, ctx);
if (len == 0) ABORT;
if (!EC_POINT_oct2point(group, P, buf, len, ctx)) ABORT;
if (0 != EC_POINT_cmp(group, P, Q, ctx)) ABORT;
fprintf(stdout, "Generator as octect string, compressed form:\n ");
for (i = 0; i < len; i++) fprintf(stdout, "%02X", buf[i]);
len = EC_POINT_point2oct(group, Q, POINT_CONVERSION_UNCOMPRESSED, buf, sizeof buf, ctx);
if (len == 0) ABORT;
if (!EC_POINT_oct2point(group, P, buf, len, ctx)) ABORT;
if (0 != EC_POINT_cmp(group, P, Q, ctx)) ABORT;
fprintf(stdout, "\nGenerator as octect string, uncompressed form:\n ");
for (i = 0; i < len; i++) fprintf(stdout, "%02X", buf[i]);
len = EC_POINT_point2oct(group, Q, POINT_CONVERSION_HYBRID, buf, sizeof buf, ctx);
if (len == 0) ABORT;
if (!EC_POINT_oct2point(group, P, buf, len, ctx)) ABORT;
if (0 != EC_POINT_cmp(group, P, Q, ctx)) ABORT;
fprintf(stdout, "\nGenerator as octect string, hybrid form:\n ");
for (i = 0; i < len; i++) fprintf(stdout, "%02X", buf[i]);
if (!EC_POINT_get_Jprojective_coordinates_GFp(group, R, x, y, z, ctx)) ABORT;
fprintf(stdout, "\nA representation of the inverse of that generator in\nJacobian projective coordinates:\n X = 0x");
BN_print_fp(stdout, x);
fprintf(stdout, ", Y = 0x");
BN_print_fp(stdout, y);
fprintf(stdout, ", Z = 0x");
BN_print_fp(stdout, z);
fprintf(stdout, "\n");
if (!EC_POINT_invert(group, P, ctx)) ABORT;
if (0 != EC_POINT_cmp(group, P, R, ctx)) ABORT;
/* Curve secp160r1 (Certicom Research SEC 2 Version 1.0, section 2.4.2, 2000)
* -- not a NIST curve, but commonly used */
if (!BN_hex2bn(&p, "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF7FFFFFFF")) ABORT;
if (1 != BN_is_prime_ex(p, BN_prime_checks, ctx, NULL)) ABORT;
if (!BN_hex2bn(&a, "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF7FFFFFFC")) ABORT;
if (!BN_hex2bn(&b, "1C97BEFC54BD7A8B65ACF89F81D4D4ADC565FA45")) ABORT;
if (!EC_GROUP_set_curve_GFp(group, p, a, b, ctx)) ABORT;
if (!BN_hex2bn(&x, "4A96B5688EF573284664698968C38BB913CBFC82")) ABORT;
if (!BN_hex2bn(&y, "23a628553168947d59dcc912042351377ac5fb32")) ABORT;
if (!EC_POINT_set_affine_coordinates_GFp(group, P, x, y, ctx)) ABORT;
if (!EC_POINT_is_on_curve(group, P, ctx)) ABORT;
if (!BN_hex2bn(&z, "0100000000000000000001F4C8F927AED3CA752257")) ABORT;
if (!EC_GROUP_set_generator(group, P, z, BN_value_one())) ABORT;
if (!EC_POINT_get_affine_coordinates_GFp(group, P, x, y, ctx)) ABORT;
fprintf(stdout, "\nSEC2 curve secp160r1 -- Generator:\n x = 0x");
BN_print_fp(stdout, x);
fprintf(stdout, "\n y = 0x");
BN_print_fp(stdout, y);
fprintf(stdout, "\n");
/* G_y value taken from the standard: */
if (!BN_hex2bn(&z, "23a628553168947d59dcc912042351377ac5fb32")) ABORT;
if (0 != BN_cmp(y, z)) ABORT;
fprintf(stdout, "verify degree ...");
if (EC_GROUP_get_degree(group) != 160) ABORT;
fprintf(stdout, " ok\n");
fprintf(stdout, "verify group order ...");
fflush(stdout);
if (!EC_GROUP_get_order(group, z, ctx)) ABORT;
if (!EC_POINT_mul(group, Q, z, NULL, NULL, ctx)) ABORT;
if (!EC_POINT_is_at_infinity(group, Q)) ABORT;
fprintf(stdout, ".");
fflush(stdout);
if (!EC_GROUP_precompute_mult(group, ctx)) ABORT;
if (!EC_POINT_mul(group, Q, z, NULL, NULL, ctx)) ABORT;
if (!EC_POINT_is_at_infinity(group, Q)) ABORT;
fprintf(stdout, " ok\n");
if (!(P_160 = EC_GROUP_new(EC_GROUP_method_of(group)))) ABORT;
if (!EC_GROUP_copy(P_160, group)) ABORT;
/* Curve P-192 (FIPS PUB 186-2, App. 6) */
if (!BN_hex2bn(&p, "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFFFFFFFFFF")) ABORT;
if (1 != BN_is_prime_ex(p, BN_prime_checks, ctx, NULL)) ABORT;
if (!BN_hex2bn(&a, "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFFFFFFFFFC")) ABORT;
if (!BN_hex2bn(&b, "64210519E59C80E70FA7E9AB72243049FEB8DEECC146B9B1")) ABORT;
if (!EC_GROUP_set_curve_GFp(group, p, a, b, ctx)) ABORT;
if (!BN_hex2bn(&x, "188DA80EB03090F67CBF20EB43A18800F4FF0AFD82FF1012")) ABORT;
if (!EC_POINT_set_compressed_coordinates_GFp(group, P, x, 1, ctx)) ABORT;
if (!EC_POINT_is_on_curve(group, P, ctx)) ABORT;
if (!BN_hex2bn(&z, "FFFFFFFFFFFFFFFFFFFFFFFF99DEF836146BC9B1B4D22831")) ABORT;
if (!EC_GROUP_set_generator(group, P, z, BN_value_one())) ABORT;
if (!EC_POINT_get_affine_coordinates_GFp(group, P, x, y, ctx)) ABORT;
fprintf(stdout, "\nNIST curve P-192 -- Generator:\n x = 0x");
BN_print_fp(stdout, x);
fprintf(stdout, "\n y = 0x");
BN_print_fp(stdout, y);
fprintf(stdout, "\n");
/* G_y value taken from the standard: */
if (!BN_hex2bn(&z, "07192B95FFC8DA78631011ED6B24CDD573F977A11E794811")) ABORT;
if (0 != BN_cmp(y, z)) ABORT;
fprintf(stdout, "verify degree ...");
if (EC_GROUP_get_degree(group) != 192) ABORT;
fprintf(stdout, " ok\n");
fprintf(stdout, "verify group order ...");
fflush(stdout);
if (!EC_GROUP_get_order(group, z, ctx)) ABORT;
if (!EC_POINT_mul(group, Q, z, NULL, NULL, ctx)) ABORT;
if (!EC_POINT_is_at_infinity(group, Q)) ABORT;
fprintf(stdout, ".");
fflush(stdout);
#if 0
if (!EC_GROUP_precompute_mult(group, ctx)) ABORT;
#endif
if (!EC_POINT_mul(group, Q, z, NULL, NULL, ctx)) ABORT;
if (!EC_POINT_is_at_infinity(group, Q)) ABORT;
fprintf(stdout, " ok\n");
if (!(P_192 = EC_GROUP_new(EC_GROUP_method_of(group)))) ABORT;
if (!EC_GROUP_copy(P_192, group)) ABORT;
/* Curve P-224 (FIPS PUB 186-2, App. 6) */
if (!BN_hex2bn(&p, "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF000000000000000000000001")) ABORT;
if (1 != BN_is_prime_ex(p, BN_prime_checks, ctx, NULL)) ABORT;
if (!BN_hex2bn(&a, "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFE")) ABORT;
if (!BN_hex2bn(&b, "B4050A850C04B3ABF54132565044B0B7D7BFD8BA270B39432355FFB4")) ABORT;
if (!EC_GROUP_set_curve_GFp(group, p, a, b, ctx)) ABORT;
if (!BN_hex2bn(&x, "B70E0CBD6BB4BF7F321390B94A03C1D356C21122343280D6115C1D21")) ABORT;
if (!EC_POINT_set_compressed_coordinates_GFp(group, P, x, 0, ctx)) ABORT;
if (!EC_POINT_is_on_curve(group, P, ctx)) ABORT;
if (!BN_hex2bn(&z, "FFFFFFFFFFFFFFFFFFFFFFFFFFFF16A2E0B8F03E13DD29455C5C2A3D")) ABORT;
if (!EC_GROUP_set_generator(group, P, z, BN_value_one())) ABORT;
if (!EC_POINT_get_affine_coordinates_GFp(group, P, x, y, ctx)) ABORT;
fprintf(stdout, "\nNIST curve P-224 -- Generator:\n x = 0x");
BN_print_fp(stdout, x);
fprintf(stdout, "\n y = 0x");
BN_print_fp(stdout, y);
fprintf(stdout, "\n");
/* G_y value taken from the standard: */
if (!BN_hex2bn(&z, "BD376388B5F723FB4C22DFE6CD4375A05A07476444D5819985007E34")) ABORT;
if (0 != BN_cmp(y, z)) ABORT;
fprintf(stdout, "verify degree ...");
if (EC_GROUP_get_degree(group) != 224) ABORT;
fprintf(stdout, " ok\n");
fprintf(stdout, "verify group order ...");
fflush(stdout);
if (!EC_GROUP_get_order(group, z, ctx)) ABORT;
if (!EC_POINT_mul(group, Q, z, NULL, NULL, ctx)) ABORT;
if (!EC_POINT_is_at_infinity(group, Q)) ABORT;
fprintf(stdout, ".");
fflush(stdout);
#if 0
if (!EC_GROUP_precompute_mult(group, ctx)) ABORT;
#endif
if (!EC_POINT_mul(group, Q, z, NULL, NULL, ctx)) ABORT;
if (!EC_POINT_is_at_infinity(group, Q)) ABORT;
fprintf(stdout, " ok\n");
if (!(P_224 = EC_GROUP_new(EC_GROUP_method_of(group)))) ABORT;
if (!EC_GROUP_copy(P_224, group)) ABORT;
/* Curve P-256 (FIPS PUB 186-2, App. 6) */
if (!BN_hex2bn(&p, "FFFFFFFF00000001000000000000000000000000FFFFFFFFFFFFFFFFFFFFFFFF")) ABORT;
if (1 != BN_is_prime_ex(p, BN_prime_checks, ctx, NULL)) ABORT;
if (!BN_hex2bn(&a, "FFFFFFFF00000001000000000000000000000000FFFFFFFFFFFFFFFFFFFFFFFC")) ABORT;
if (!BN_hex2bn(&b, "5AC635D8AA3A93E7B3EBBD55769886BC651D06B0CC53B0F63BCE3C3E27D2604B")) ABORT;
if (!EC_GROUP_set_curve_GFp(group, p, a, b, ctx)) ABORT;
if (!BN_hex2bn(&x, "6B17D1F2E12C4247F8BCE6E563A440F277037D812DEB33A0F4A13945D898C296")) ABORT;
if (!EC_POINT_set_compressed_coordinates_GFp(group, P, x, 1, ctx)) ABORT;
if (!EC_POINT_is_on_curve(group, P, ctx)) ABORT;
if (!BN_hex2bn(&z, "FFFFFFFF00000000FFFFFFFFFFFFFFFFBCE6FAADA7179E"
"84F3B9CAC2FC632551")) ABORT;
if (!EC_GROUP_set_generator(group, P, z, BN_value_one())) ABORT;
if (!EC_POINT_get_affine_coordinates_GFp(group, P, x, y, ctx)) ABORT;
fprintf(stdout, "\nNIST curve P-256 -- Generator:\n x = 0x");
BN_print_fp(stdout, x);
fprintf(stdout, "\n y = 0x");
BN_print_fp(stdout, y);
fprintf(stdout, "\n");
/* G_y value taken from the standard: */
if (!BN_hex2bn(&z, "4FE342E2FE1A7F9B8EE7EB4A7C0F9E162BCE33576B315ECECBB6406837BF51F5")) ABORT;
if (0 != BN_cmp(y, z)) ABORT;
fprintf(stdout, "verify degree ...");
if (EC_GROUP_get_degree(group) != 256) ABORT;
fprintf(stdout, " ok\n");
fprintf(stdout, "verify group order ...");
fflush(stdout);
if (!EC_GROUP_get_order(group, z, ctx)) ABORT;
if (!EC_POINT_mul(group, Q, z, NULL, NULL, ctx)) ABORT;
if (!EC_POINT_is_at_infinity(group, Q)) ABORT;
fprintf(stdout, ".");
fflush(stdout);
#if 0
if (!EC_GROUP_precompute_mult(group, ctx)) ABORT;
#endif
if (!EC_POINT_mul(group, Q, z, NULL, NULL, ctx)) ABORT;
if (!EC_POINT_is_at_infinity(group, Q)) ABORT;
fprintf(stdout, " ok\n");
if (!(P_256 = EC_GROUP_new(EC_GROUP_method_of(group)))) ABORT;
if (!EC_GROUP_copy(P_256, group)) ABORT;
/* Curve P-384 (FIPS PUB 186-2, App. 6) */
if (!BN_hex2bn(&p, "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
"FFFFFFFFFFFFFFFFFEFFFFFFFF0000000000000000FFFFFFFF")) ABORT;
if (1 != BN_is_prime_ex(p, BN_prime_checks, ctx, NULL)) ABORT;
if (!BN_hex2bn(&a, "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
"FFFFFFFFFFFFFFFFFEFFFFFFFF0000000000000000FFFFFFFC")) ABORT;
if (!BN_hex2bn(&b, "B3312FA7E23EE7E4988E056BE3F82D19181D9C6EFE8141"
"120314088F5013875AC656398D8A2ED19D2A85C8EDD3EC2AEF")) ABORT;
if (!EC_GROUP_set_curve_GFp(group, p, a, b, ctx)) ABORT;
if (!BN_hex2bn(&x, "AA87CA22BE8B05378EB1C71EF320AD746E1D3B628BA79B"
"9859F741E082542A385502F25DBF55296C3A545E3872760AB7")) ABORT;
if (!EC_POINT_set_compressed_coordinates_GFp(group, P, x, 1, ctx)) ABORT;
if (!EC_POINT_is_on_curve(group, P, ctx)) ABORT;
if (!BN_hex2bn(&z, "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
"FFC7634D81F4372DDF581A0DB248B0A77AECEC196ACCC52973")) ABORT;
if (!EC_GROUP_set_generator(group, P, z, BN_value_one())) ABORT;
if (!EC_POINT_get_affine_coordinates_GFp(group, P, x, y, ctx)) ABORT;
fprintf(stdout, "\nNIST curve P-384 -- Generator:\n x = 0x");
BN_print_fp(stdout, x);
fprintf(stdout, "\n y = 0x");
BN_print_fp(stdout, y);
fprintf(stdout, "\n");
/* G_y value taken from the standard: */
if (!BN_hex2bn(&z, "3617DE4A96262C6F5D9E98BF9292DC29F8F41DBD289A14"
"7CE9DA3113B5F0B8C00A60B1CE1D7E819D7A431D7C90EA0E5F")) ABORT;
if (0 != BN_cmp(y, z)) ABORT;
fprintf(stdout, "verify degree ...");
if (EC_GROUP_get_degree(group) != 384) ABORT;
fprintf(stdout, " ok\n");
fprintf(stdout, "verify group order ...");
fflush(stdout);
if (!EC_GROUP_get_order(group, z, ctx)) ABORT;
if (!EC_POINT_mul(group, Q, z, NULL, NULL, ctx)) ABORT;
if (!EC_POINT_is_at_infinity(group, Q)) ABORT;
fprintf(stdout, ".");
fflush(stdout);
#if 0
if (!EC_GROUP_precompute_mult(group, ctx)) ABORT;
#endif
if (!EC_POINT_mul(group, Q, z, NULL, NULL, ctx)) ABORT;
if (!EC_POINT_is_at_infinity(group, Q)) ABORT;
fprintf(stdout, " ok\n");
if (!(P_384 = EC_GROUP_new(EC_GROUP_method_of(group)))) ABORT;
if (!EC_GROUP_copy(P_384, group)) ABORT;
/* Curve P-521 (FIPS PUB 186-2, App. 6) */
if (!BN_hex2bn(&p, "1FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
"FFFFFFFFFFFFFFFFFFFFFFFFFFFF")) ABORT;
if (1 != BN_is_prime_ex(p, BN_prime_checks, ctx, NULL)) ABORT;
if (!BN_hex2bn(&a, "1FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
"FFFFFFFFFFFFFFFFFFFFFFFFFFFC")) ABORT;
if (!BN_hex2bn(&b, "051953EB9618E1C9A1F929A21A0B68540EEA2DA725B99B"
"315F3B8B489918EF109E156193951EC7E937B1652C0BD3BB1BF073573"
"DF883D2C34F1EF451FD46B503F00")) ABORT;
if (!EC_GROUP_set_curve_GFp(group, p, a, b, ctx)) ABORT;
if (!BN_hex2bn(&x, "C6858E06B70404E9CD9E3ECB662395B4429C648139053F"
"B521F828AF606B4D3DBAA14B5E77EFE75928FE1DC127A2FFA8DE3348B"
"3C1856A429BF97E7E31C2E5BD66")) ABORT;
if (!EC_POINT_set_compressed_coordinates_GFp(group, P, x, 0, ctx)) ABORT;
if (!EC_POINT_is_on_curve(group, P, ctx)) ABORT;
if (!BN_hex2bn(&z, "1FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
"FFFFFFFFFFFFFFFFFFFFA51868783BF2F966B7FCC0148F709A5D03BB5"
"C9B8899C47AEBB6FB71E91386409")) ABORT;
if (!EC_GROUP_set_generator(group, P, z, BN_value_one())) ABORT;
if (!EC_POINT_get_affine_coordinates_GFp(group, P, x, y, ctx)) ABORT;
fprintf(stdout, "\nNIST curve P-521 -- Generator:\n x = 0x");
BN_print_fp(stdout, x);
fprintf(stdout, "\n y = 0x");
BN_print_fp(stdout, y);
fprintf(stdout, "\n");
/* G_y value taken from the standard: */
if (!BN_hex2bn(&z, "11839296A789A3BC0045C8A5FB42C7D1BD998F54449579"
"B446817AFBD17273E662C97EE72995EF42640C550B9013FAD0761353C"
"7086A272C24088BE94769FD16650")) ABORT;
if (0 != BN_cmp(y, z)) ABORT;
fprintf(stdout, "verify degree ...");
if (EC_GROUP_get_degree(group) != 521) ABORT;
fprintf(stdout, " ok\n");
fprintf(stdout, "verify group order ...");
fflush(stdout);
if (!EC_GROUP_get_order(group, z, ctx)) ABORT;
if (!EC_POINT_mul(group, Q, z, NULL, NULL, ctx)) ABORT;
if (!EC_POINT_is_at_infinity(group, Q)) ABORT;
fprintf(stdout, ".");
fflush(stdout);
#if 0
if (!EC_GROUP_precompute_mult(group, ctx)) ABORT;
#endif
if (!EC_POINT_mul(group, Q, z, NULL, NULL, ctx)) ABORT;
if (!EC_POINT_is_at_infinity(group, Q)) ABORT;
fprintf(stdout, " ok\n");
if (!(P_521 = EC_GROUP_new(EC_GROUP_method_of(group)))) ABORT;
if (!EC_GROUP_copy(P_521, group)) ABORT;
/* more tests using the last curve */
if (!EC_POINT_copy(Q, P)) ABORT;
if (EC_POINT_is_at_infinity(group, Q)) ABORT;
if (!EC_POINT_dbl(group, P, P, ctx)) ABORT;
if (!EC_POINT_is_on_curve(group, P, ctx)) ABORT;
if (!EC_POINT_invert(group, Q, ctx)) ABORT; /* P = -2Q */
if (!EC_POINT_add(group, R, P, Q, ctx)) ABORT;
if (!EC_POINT_add(group, R, R, Q, ctx)) ABORT;
if (!EC_POINT_is_at_infinity(group, R)) ABORT; /* R = P + 2Q */
{
const EC_POINT *points[3];
const BIGNUM *scalars[3];
if (EC_POINT_is_at_infinity(group, Q)) ABORT;
points[0] = Q;
points[1] = Q;
points[2] = Q;
if (!BN_add(y, z, BN_value_one())) ABORT;
if (BN_is_odd(y)) ABORT;
if (!BN_rshift1(y, y)) ABORT;
scalars[0] = y; /* (group order + 1)/2, so y*Q + y*Q = Q */
scalars[1] = y;
fprintf(stdout, "combined multiplication ...");
fflush(stdout);
/* z is still the group order */
if (!EC_POINTs_mul(group, P, NULL, 2, points, scalars, ctx)) ABORT;
if (!EC_POINTs_mul(group, R, z, 2, points, scalars, ctx)) ABORT;
if (0 != EC_POINT_cmp(group, P, R, ctx)) ABORT;
if (0 != EC_POINT_cmp(group, R, Q, ctx)) ABORT;
fprintf(stdout, ".");
fflush(stdout);
if (!BN_pseudo_rand(y, BN_num_bits(y), 0, 0)) ABORT;
if (!BN_add(z, z, y)) ABORT;
BN_set_negative(z, 1);
scalars[0] = y;
scalars[1] = z; /* z = -(order + y) */
if (!EC_POINTs_mul(group, P, NULL, 2, points, scalars, ctx)) ABORT;
if (!EC_POINT_is_at_infinity(group, P)) ABORT;
fprintf(stdout, ".");
fflush(stdout);
if (!BN_pseudo_rand(x, BN_num_bits(y) - 1, 0, 0)) ABORT;
if (!BN_add(z, x, y)) ABORT;
BN_set_negative(z, 1);
scalars[0] = x;
scalars[1] = y;
scalars[2] = z; /* z = -(x+y) */
if (!EC_POINTs_mul(group, P, NULL, 3, points, scalars, ctx)) ABORT;
if (!EC_POINT_is_at_infinity(group, P)) ABORT;
fprintf(stdout, " ok\n\n");
}
#if 0
timings(P_160, TIMING_BASE_PT, ctx);
timings(P_160, TIMING_RAND_PT, ctx);
timings(P_160, TIMING_SIMUL, ctx);
timings(P_192, TIMING_BASE_PT, ctx);
timings(P_192, TIMING_RAND_PT, ctx);
timings(P_192, TIMING_SIMUL, ctx);
timings(P_224, TIMING_BASE_PT, ctx);
timings(P_224, TIMING_RAND_PT, ctx);
timings(P_224, TIMING_SIMUL, ctx);
timings(P_256, TIMING_BASE_PT, ctx);
timings(P_256, TIMING_RAND_PT, ctx);
timings(P_256, TIMING_SIMUL, ctx);
timings(P_384, TIMING_BASE_PT, ctx);
timings(P_384, TIMING_RAND_PT, ctx);
timings(P_384, TIMING_SIMUL, ctx);
timings(P_521, TIMING_BASE_PT, ctx);
timings(P_521, TIMING_RAND_PT, ctx);
timings(P_521, TIMING_SIMUL, ctx);
#endif
if (ctx)
BN_CTX_free(ctx);
BN_free(p); BN_free(a); BN_free(b);
EC_GROUP_free(group);
EC_POINT_free(P);
EC_POINT_free(Q);
EC_POINT_free(R);
BN_free(x); BN_free(y); BN_free(z);
if (P_160) EC_GROUP_free(P_160);
if (P_192) EC_GROUP_free(P_192);
if (P_224) EC_GROUP_free(P_224);
if (P_256) EC_GROUP_free(P_256);
if (P_384) EC_GROUP_free(P_384);
if (P_521) EC_GROUP_free(P_521);
}
int MAIN(int argc, char **argv)
{
int hex = 0;
int checks = 20;
int generate = 0;
int bits = 0;
int safe = 0;
BIGNUM *bn = NULL;
BIO *bio_out;
apps_startup();
if (bio_err == NULL)
if ((bio_err = BIO_new(BIO_s_file())) != NULL)
BIO_set_fp(bio_err, stderr, BIO_NOCLOSE | BIO_FP_TEXT);
--argc;
++argv;
while (argc >= 1 && **argv == '-') {
if (!strcmp(*argv, "-hex"))
hex = 1;
else if (!strcmp(*argv, "-generate"))
generate = 1;
else if (!strcmp(*argv, "-bits"))
if (--argc < 1)
goto bad;
else
bits = atoi(*++argv);
else if (!strcmp(*argv, "-safe"))
safe = 1;
else if (!strcmp(*argv, "-checks"))
if (--argc < 1)
goto bad;
else
checks = atoi(*++argv);
else {
BIO_printf(bio_err, "Unknown option '%s'\n", *argv);
goto bad;
}
--argc;
++argv;
}
if (argv[0] == NULL && !generate) {
BIO_printf(bio_err, "No prime specified\n");
goto bad;
}
if ((bio_out = BIO_new(BIO_s_file())) != NULL) {
BIO_set_fp(bio_out, stdout, BIO_NOCLOSE);
#ifdef OPENSSL_SYS_VMS
{
BIO *tmpbio = BIO_new(BIO_f_linebuffer());
bio_out = BIO_push(tmpbio, bio_out);
}
#endif
}
if (generate) {
char *s;
if (!bits) {
BIO_printf(bio_err, "Specifiy the number of bits.\n");
return 1;
}
bn = BN_new();
BN_generate_prime_ex(bn, bits, safe, NULL, NULL, NULL);
s = hex ? BN_bn2hex(bn) : BN_bn2dec(bn);
BIO_printf(bio_out, "%s\n", s);
OPENSSL_free(s);
} else {
int r;
if (hex)
r = BN_hex2bn(&bn, argv[0]);
else
r = BN_dec2bn(&bn, argv[0]);
if(!r) {
BIO_printf(bio_err, "Failed to process value (%s)\n", argv[0]);
goto end;
}
BN_print(bio_out, bn);
BIO_printf(bio_out, " is %sprime\n",
BN_is_prime_ex(bn, checks, NULL, NULL) ? "" : "not ");
}
end:
BN_free(bn);
BIO_free_all(bio_out);
return 0;
bad:
BIO_printf(bio_err, "options are\n");
BIO_printf(bio_err, "%-14s hex\n", "-hex");
BIO_printf(bio_err, "%-14s number of checks\n", "-checks <n>");
return 1;
}
int MAIN(int argc, char **argv)
{
int hex = 0;
int checks = 20;
BIGNUM *bn = NULL;
BIO *bio_out;
apps_startup();
if (bio_err == NULL)
if ((bio_err = BIO_new(BIO_s_file())) != NULL)
BIO_set_fp(bio_err, stderr, BIO_NOCLOSE | BIO_FP_TEXT);
--argc;
++argv;
while (argc >= 1 && **argv == '-') {
if (!strcmp(*argv, "-hex"))
hex = 1;
else if (!strcmp(*argv, "-checks"))
if (--argc < 1)
goto bad;
else
checks = atoi(*++argv);
else {
BIO_printf(bio_err, "Unknown option '%s'\n", *argv);
goto bad;
}
--argc;
++argv;
}
if (argv[0] == NULL) {
BIO_printf(bio_err, "No prime specified\n");
goto bad;
}
if ((bio_out = BIO_new(BIO_s_file())) != NULL) {
BIO_set_fp(bio_out, stdout, BIO_NOCLOSE);
#ifdef OPENSSL_SYS_VMS
{
BIO *tmpbio = BIO_new(BIO_f_linebuffer());
bio_out = BIO_push(tmpbio, bio_out);
}
#endif
}
if (hex)
BN_hex2bn(&bn, argv[0]);
else
BN_dec2bn(&bn, argv[0]);
BN_print(bio_out, bn);
BIO_printf(bio_out, " is %sprime\n",
BN_is_prime_ex(bn, checks, NULL, NULL) ? "" : "not ");
BN_free(bn);
BIO_free_all(bio_out);
return 0;
bad:
BIO_printf(bio_err, "options are\n");
BIO_printf(bio_err, "%-14s hex\n", "-hex");
BIO_printf(bio_err, "%-14s number of checks\n", "-checks <n>");
return 1;
}
int
RSA_check_key(const RSA *key)
{
BIGNUM *i, *j, *k, *l, *m;
BN_CTX *ctx;
int r;
int ret = 1;
if (!key->p || !key->q || !key->n || !key->e || !key->d) {
RSAerr(RSA_F_RSA_CHECK_KEY, RSA_R_VALUE_MISSING);
return 0;
}
i = BN_new();
j = BN_new();
k = BN_new();
l = BN_new();
m = BN_new();
ctx = BN_CTX_new();
if (i == NULL || j == NULL || k == NULL || l == NULL || m == NULL ||
ctx == NULL) {
ret = -1;
RSAerr(RSA_F_RSA_CHECK_KEY, ERR_R_MALLOC_FAILURE);
goto err;
}
/* p prime? */
r = BN_is_prime_ex(key->p, BN_prime_checks, NULL, NULL);
if (r != 1) {
ret = r;
if (r != 0)
goto err;
RSAerr(RSA_F_RSA_CHECK_KEY, RSA_R_P_NOT_PRIME);
}
/* q prime? */
r = BN_is_prime_ex(key->q, BN_prime_checks, NULL, NULL);
if (r != 1) {
ret = r;
if (r != 0)
goto err;
RSAerr(RSA_F_RSA_CHECK_KEY, RSA_R_Q_NOT_PRIME);
}
/* n = p*q? */
r = BN_mul(i, key->p, key->q, ctx);
if (!r) {
ret = -1;
goto err;
}
if (BN_cmp(i, key->n) != 0) {
ret = 0;
RSAerr(RSA_F_RSA_CHECK_KEY, RSA_R_N_DOES_NOT_EQUAL_P_Q);
}
/* d*e = 1 mod lcm(p-1,q-1)? */
r = BN_sub(i, key->p, BN_value_one());
if (!r) {
ret = -1;
goto err;
}
r = BN_sub(j, key->q, BN_value_one());
if (!r) {
ret = -1;
goto err;
}
/* now compute k = lcm(i,j) */
r = BN_mul(l, i, j, ctx);
if (!r) {
ret = -1;
goto err;
}
r = BN_gcd(m, i, j, ctx);
if (!r) {
ret = -1;
goto err;
}
r = BN_div(k, NULL, l, m, ctx); /* remainder is 0 */
if (!r) {
ret = -1;
goto err;
}
r = BN_mod_mul(i, key->d, key->e, k, ctx);
if (!r) {
ret = -1;
goto err;
}
if (!BN_is_one(i)) {
ret = 0;
RSAerr(RSA_F_RSA_CHECK_KEY, RSA_R_D_E_NOT_CONGRUENT_TO_1);
}
if (key->dmp1 != NULL && key->dmq1 != NULL && key->iqmp != NULL) {
/* dmp1 = d mod (p-1)? */
r = BN_sub(i, key->p, BN_value_one());
if (!r) {
ret = -1;
goto err;
}
r = BN_mod(j, key->d, i, ctx);
if (!r) {
ret = -1;
goto err;
}
if (BN_cmp(j, key->dmp1) != 0) {
ret = 0;
RSAerr(RSA_F_RSA_CHECK_KEY,
RSA_R_DMP1_NOT_CONGRUENT_TO_D);
}
/* dmq1 = d mod (q-1)? */
r = BN_sub(i, key->q, BN_value_one());
if (!r) {
ret = -1;
goto err;
}
r = BN_mod(j, key->d, i, ctx);
if (!r) {
ret = -1;
goto err;
}
if (BN_cmp(j, key->dmq1) != 0) {
ret = 0;
RSAerr(RSA_F_RSA_CHECK_KEY,
RSA_R_DMQ1_NOT_CONGRUENT_TO_D);
}
/* iqmp = q^-1 mod p? */
if (!BN_mod_inverse(i, key->q, key->p, ctx)) {
ret = -1;
goto err;
}
if (BN_cmp(i, key->iqmp) != 0) {
ret = 0;
RSAerr(RSA_F_RSA_CHECK_KEY,
RSA_R_IQMP_NOT_INVERSE_OF_Q);
}
}
err:
BN_free(i);
BN_free(j);
BN_free(k);
BN_free(l);
BN_free(m);
BN_CTX_free(ctx);
return (ret);
}
int
prime_main(int argc, char **argv)
{
BIGNUM *bn = NULL;
char *prime = NULL;
BIO *bio_out;
char *s;
int ret = 1;
memset(&prime_config, 0, sizeof(prime_config));
/* Default iterations for Miller-Rabin probabilistic primality test. */
prime_config.checks = 20;
if (options_parse(argc, argv, prime_options, &prime, NULL) != 0) {
prime_usage();
return (1);
}
if (prime == NULL && prime_config.generate == 0) {
BIO_printf(bio_err, "No prime specified.\n");
prime_usage();
return (1);
}
if ((bio_out = BIO_new(BIO_s_file())) == NULL) {
ERR_print_errors(bio_err);
return (1);
}
BIO_set_fp(bio_out, stdout, BIO_NOCLOSE);
if (prime_config.generate != 0) {
if (prime_config.bits == 0) {
BIO_printf(bio_err, "Specify the number of bits.\n");
goto end;
}
bn = BN_new();
if (!bn) {
BIO_printf(bio_err, "Out of memory.\n");
goto end;
}
if (!BN_generate_prime_ex(bn, prime_config.bits,
prime_config.safe, NULL, NULL, NULL)) {
BIO_printf(bio_err, "Prime generation error.\n");
goto end;
}
s = prime_config.hex ? BN_bn2hex(bn) : BN_bn2dec(bn);
if (s == NULL) {
BIO_printf(bio_err, "Out of memory.\n");
goto end;
}
BIO_printf(bio_out, "%s\n", s);
free(s);
} else {
if (prime_config.hex) {
if (!BN_hex2bn(&bn, prime)) {
BIO_printf(bio_err, "%s is an invalid hex "
"value.\n", prime);
goto end;
}
} else {
if (!BN_dec2bn(&bn, prime)) {
BIO_printf(bio_err, "%s is an invalid decimal "
"value.\n", prime);
goto end;
}
}
BN_print(bio_out, bn);
BIO_printf(bio_out, " is %sprime\n",
BN_is_prime_ex(bn, prime_config.checks,
NULL, NULL) ? "" : "not ");
}
ret = 0;
end:
BN_free(bn);
BIO_free_all(bio_out);
return (ret);
}
int DH_check(const DH *dh, int *ret) {
/* Check that p is a safe prime and if g is 2, 3 or 5, check that it is a
* suitable generator where:
* for 2, p mod 24 == 11
* for 3, p mod 12 == 5
* for 5, p mod 10 == 3 or 7
* should hold.
*/
int ok = 0, r;
BN_CTX *ctx = NULL;
BN_ULONG l;
BIGNUM *t1 = NULL, *t2 = NULL;
*ret = 0;
ctx = BN_CTX_new();
if (ctx == NULL) {
goto err;
}
BN_CTX_start(ctx);
t1 = BN_CTX_get(ctx);
if (t1 == NULL) {
goto err;
}
t2 = BN_CTX_get(ctx);
if (t2 == NULL) {
goto err;
}
if (dh->q) {
if (BN_cmp(dh->g, BN_value_one()) <= 0) {
*ret |= DH_CHECK_NOT_SUITABLE_GENERATOR;
} else if (BN_cmp(dh->g, dh->p) >= 0) {
*ret |= DH_CHECK_NOT_SUITABLE_GENERATOR;
} else {
/* Check g^q == 1 mod p */
if (!BN_mod_exp(t1, dh->g, dh->q, dh->p, ctx)) {
goto err;
}
if (!BN_is_one(t1)) {
*ret |= DH_CHECK_NOT_SUITABLE_GENERATOR;
}
}
r = BN_is_prime_ex(dh->q, BN_prime_checks, ctx, NULL);
if (r < 0) {
goto err;
}
if (!r) {
*ret |= DH_CHECK_Q_NOT_PRIME;
}
/* Check p == 1 mod q i.e. q divides p - 1 */
if (!BN_div(t1, t2, dh->p, dh->q, ctx)) {
goto err;
}
if (!BN_is_one(t2)) {
*ret |= DH_CHECK_INVALID_Q_VALUE;
}
if (dh->j && BN_cmp(dh->j, t1)) {
*ret |= DH_CHECK_INVALID_J_VALUE;
}
} else if (BN_is_word(dh->g, DH_GENERATOR_2)) {
l = BN_mod_word(dh->p, 24);
if (l == (BN_ULONG)-1) {
goto err;
}
if (l != 11) {
*ret |= DH_CHECK_NOT_SUITABLE_GENERATOR;
}
} else if (BN_is_word(dh->g, DH_GENERATOR_5)) {
l = BN_mod_word(dh->p, 10);
if (l == (BN_ULONG)-1) {
goto err;
}
if (l != 3 && l != 7) {
*ret |= DH_CHECK_NOT_SUITABLE_GENERATOR;
}
} else {
*ret |= DH_CHECK_UNABLE_TO_CHECK_GENERATOR;
}
r = BN_is_prime_ex(dh->p, BN_prime_checks, ctx, NULL);
if (r < 0) {
goto err;
}
if (!r) {
*ret |= DH_CHECK_P_NOT_PRIME;
} else if (!dh->q) {
if (!BN_rshift1(t1, dh->p)) {
goto err;
}
r = BN_is_prime_ex(t1, BN_prime_checks, ctx, NULL);
if (r < 0) {
goto err;
}
if (!r) {
*ret |= DH_CHECK_P_NOT_SAFE_PRIME;
}
}
ok = 1;
err:
if (ctx != NULL) {
BN_CTX_end(ctx);
BN_CTX_free(ctx);
}
return ok;
}
extern "C" jboolean Java_java_math_NativeBN_BN_1is_1prime_1ex(JNIEnv* env, jclass, jlong p, int nchecks, jlong cb) {
if (!oneValidHandle(env, p)) return JNI_FALSE;
Unique_BN_CTX ctx(BN_CTX_new());
return BN_is_prime_ex(toBigNum(p), nchecks, ctx.get(), reinterpret_cast<BN_GENCB*>(cb));
}