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Added RSA key generation code (i15, i31, i62).

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This commit is contained in:
Thomas Pornin 2018-07-31 23:00:26 +02:00
parent a0054ad821
commit 491a45337d
15 changed files with 2865 additions and 13 deletions
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127
test/test_crypto.c
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@ -5685,6 +5685,122 @@ test_RSA_OAEP(const char *name,
fflush(stdout);
}
static void
test_RSA_keygen(const char *name, br_rsa_keygen kg,
br_rsa_pkcs1_sign sign, br_rsa_pkcs1_vrfy vrfy)
{
br_hmac_drbg_context rng;
int i;
printf("Test %s: ", name);
fflush(stdout);
br_hmac_drbg_init(&rng, &br_sha256_vtable, "seed for RSA keygen", 19);
for (i = 0; i < 40; i ++) {
unsigned size;
uint32_t pubexp;
br_rsa_private_key sk;
br_rsa_public_key pk;
unsigned char kbuf_priv[BR_RSA_KBUF_PRIV_SIZE(2048)];
unsigned char kbuf_pub[BR_RSA_KBUF_PUB_SIZE(2048)];
uint32_t mod[256];
uint32_t cc;
size_t u, v;
unsigned char sig[257], hv[32], hv2[sizeof hv];
unsigned mask1, mask2;
if (i <= 35) {
size = 1024 + i;
pubexp = 17;
} else {
size = 2048;
pubexp = (i << 1) - 69;
}
if (!kg(&rng.vtable,
&sk, kbuf_priv, &pk, kbuf_pub, size, pubexp))
{
fprintf(stderr, "RSA key pair generation failure\n");
exit(EXIT_FAILURE);
}
for (u = pk.elen; u > 0; u --) {
if (pk.e[u - 1] != (pubexp & 0xFF)) {
fprintf(stderr, "wrong public exponent\n");
exit(EXIT_FAILURE);
}
pubexp >>= 8;
}
if (pubexp != 0) {
fprintf(stderr, "truncated public exponent\n");
exit(EXIT_FAILURE);
}
memset(mod, 0, sizeof mod);
for (u = 0; u < sk.plen; u ++) {
for (v = 0; v < sk.qlen; v ++) {
mod[u + v] += (uint32_t)sk.p[sk.plen - 1 - u]
* (uint32_t)sk.q[sk.qlen - 1 - v];
}
}
cc = 0;
for (u = 0; u < sk.plen + sk.qlen; u ++) {
mod[u] += cc;
cc = mod[u] >> 8;
mod[u] &= 0xFF;
}
for (u = 0; u < pk.nlen; u ++) {
if (mod[pk.nlen - 1 - u] != pk.n[u]) {
fprintf(stderr, "wrong modulus\n");
exit(EXIT_FAILURE);
}
}
if (sk.n_bitlen != size) {
fprintf(stderr, "wrong key size\n");
exit(EXIT_FAILURE);
}
if (pk.nlen != (size + 7) >> 3) {
fprintf(stderr, "wrong modulus size (bytes)\n");
exit(EXIT_FAILURE);
}
mask1 = 0x01 << ((size + 7) & 7);
mask2 = 0xFF & -mask1;
if ((pk.n[0] & mask2) != mask1) {
fprintf(stderr, "wrong modulus size (bits)\n");
exit(EXIT_FAILURE);
}
rng.vtable->generate(&rng.vtable, hv, sizeof hv);
memset(sig, 0, sizeof sig);
sig[pk.nlen] = 0x00;
if (!sign(BR_HASH_OID_SHA256, hv, sizeof hv, &sk, sig)) {
fprintf(stderr, "signature error\n");
exit(EXIT_FAILURE);
}
if (sig[pk.nlen] != 0x00) {
fprintf(stderr, "signature length error\n");
exit(EXIT_FAILURE);
}
if (!vrfy(sig, pk.nlen, BR_HASH_OID_SHA256, sizeof hv,
&pk, hv2))
{
fprintf(stderr, "signature verification error (1)\n");
exit(EXIT_FAILURE);
}
if (memcmp(hv, hv2, sizeof hv) != 0) {
fprintf(stderr, "signature verification error (2)\n");
exit(EXIT_FAILURE);
}
printf(".");
fflush(stdout);
}
printf(" done.\n");
fflush(stdout);
}
static void
test_RSA_i15(void)
{
@ -5693,6 +5809,8 @@ test_RSA_i15(void)
&br_rsa_i15_pkcs1_sign, &br_rsa_i15_pkcs1_vrfy);
test_RSA_OAEP("RSA i15 OAEP",
&br_rsa_i15_oaep_encrypt, &br_rsa_i15_oaep_decrypt);
test_RSA_keygen("RSA i15 keygen", &br_rsa_i15_keygen,
&br_rsa_i15_pkcs1_sign, &br_rsa_i15_pkcs1_vrfy);
}
static void
@ -5703,6 +5821,8 @@ test_RSA_i31(void)
&br_rsa_i31_pkcs1_sign, &br_rsa_i31_pkcs1_vrfy);
test_RSA_OAEP("RSA i31 OAEP",
&br_rsa_i31_oaep_encrypt, &br_rsa_i31_oaep_decrypt);
test_RSA_keygen("RSA i31 keygen", &br_rsa_i31_keygen,
&br_rsa_i31_pkcs1_sign, &br_rsa_i31_pkcs1_vrfy);
}
static void
@ -5724,6 +5844,7 @@ test_RSA_i62(void)
br_rsa_pkcs1_vrfy vrfy;
br_rsa_oaep_encrypt menc;
br_rsa_oaep_decrypt mdec;
br_rsa_keygen kgen;
pub = br_rsa_i62_public_get();
priv = br_rsa_i62_private_get();
@ -5731,16 +5852,18 @@ test_RSA_i62(void)
vrfy = br_rsa_i62_pkcs1_vrfy_get();
menc = br_rsa_i62_oaep_encrypt_get();
mdec = br_rsa_i62_oaep_decrypt_get();
kgen = br_rsa_i62_keygen_get();
if (pub) {
if (!priv || !sign || !vrfy || !menc || !mdec) {
if (!priv || !sign || !vrfy || !menc || !mdec || !kgen) {
fprintf(stderr, "Inconsistent i62 availability\n");
exit(EXIT_FAILURE);
}
test_RSA_core("RSA i62 core", pub, priv);
test_RSA_sign("RSA i62 sign", priv, sign, vrfy);
test_RSA_OAEP("RSA i62 OAEP", menc, mdec);
test_RSA_keygen("RSA i62 keygen", kgen, sign, vrfy);
} else {
if (priv || sign || vrfy || menc || mdec) {
if (priv || sign || vrfy || menc || mdec || kgen) {
fprintf(stderr, "Inconsistent i62 availability\n");
exit(EXIT_FAILURE);
}