libcryptx-perl/inc/CryptX_PK_RSA.xs.inc
2018-03-22 15:51:09 +01:00

420 lines
16 KiB
C++

MODULE = CryptX PACKAGE = Crypt::PK::RSA
Crypt::PK::RSA
_new()
CODE:
{
int rv;
Newz(0, RETVAL, 1, struct rsa_struct);
if (!RETVAL) croak("FATAL: Newz failed");
RETVAL->key.type = -1;
RETVAL->pindex = find_prng("chacha20");
if(RETVAL->pindex==-1) croak("FATAL: find_prng('chacha20') failed");
rv = rng_make_prng(320, RETVAL->pindex, &RETVAL->pstate, NULL); /* 320bits = 40bytes */
if (rv != CRYPT_OK) croak("FATAL: rng_make_prng failed: %s", error_to_string(rv));
}
OUTPUT:
RETVAL
void
generate_key(Crypt::PK::RSA self, int key_size=256, long key_e=65537)
PPCODE:
{
/* key_size is in octets */
int rv;
/* gen the key */
rv = rsa_make_key(&self->pstate, self->pindex, key_size, key_e, &self->key);
if (rv != CRYPT_OK) croak("FATAL: rsa_make_key failed: %s", error_to_string(rv));
XPUSHs(ST(0)); /* return self */
}
void
_import(Crypt::PK::RSA self, SV * key_data)
PPCODE:
{
int rv;
unsigned char *data=NULL;
STRLEN data_len=0;
data = (unsigned char *)SvPVbyte(key_data, data_len);
if (self->key.type != -1) { rsa_free(&self->key); self->key.type = -1; }
rv = rsa_import(data, (unsigned long)data_len, &self->key);
if (rv != CRYPT_OK) croak("FATAL: rsa_import failed: %s", error_to_string(rv));
XPUSHs(ST(0)); /* return self */
}
void
_import_pkcs8(Crypt::PK::RSA self, SV * key_data)
PPCODE:
{
int rv;
unsigned char *data=NULL;
STRLEN data_len=0;
data = (unsigned char *)SvPVbyte(key_data, data_len);
if (self->key.type != -1) { rsa_free(&self->key); self->key.type = -1; }
rv = rsa_import_pkcs8(data, (unsigned long)data_len, NULL, 0, &self->key);
if (rv != CRYPT_OK) croak("FATAL: rsa_import_pkcs8 failed: %s", error_to_string(rv));
XPUSHs(ST(0)); /* return self */
}
void
_import_hex(Crypt::PK::RSA self, char *N, char *e, char *d=NULL, char *p=NULL, char *q=NULL, char *dP=NULL, char *dQ=NULL, char *qP=NULL)
PPCODE:
{
int rv;
if (self->key.type != -1) { rsa_free(&self->key); self->key.type = -1; }
rv = rsa_import_radix(16, N, e, d, p, q, dP, dQ, qP, &self->key);
if (rv != CRYPT_OK) croak("FATAL: rsa_import_radix failed: %s", error_to_string(rv));
XPUSHs(ST(0)); /* return self */
}
int
is_private(Crypt::PK::RSA self)
CODE:
if (self->key.type == -1 || self->key.N == NULL) XSRETURN_UNDEF;
RETVAL = (self->key.type == PK_PRIVATE) ? 1 : 0;
OUTPUT:
RETVAL
int
size(Crypt::PK::RSA self)
CODE:
if (self->key.type == -1 || self->key.N == NULL) XSRETURN_UNDEF;
RETVAL = mp_unsigned_bin_size(self->key.N);
OUTPUT:
RETVAL
SV*
key2hash(Crypt::PK::RSA self)
PREINIT:
HV *rv_hash;
long siz, nsize;
char buf[20001];
SV **not_used;
CODE:
if (self->key.type == -1 || self->key.N == NULL) XSRETURN_UNDEF;
nsize = mp_unsigned_bin_size(self->key.N);
rv_hash = newHV();
/* =====> e */
siz = (self->key.e) ? mp_unsigned_bin_size(self->key.e) : 0;
if (siz>10000) {
croak("FATAL: key2hash failed - 'e' too big number");
}
if (siz>0) {
mp_tohex_with_leading_zero(self->key.e, buf, 20000, 0);
not_used = hv_store(rv_hash, "e", 1, newSVpv(buf, strlen(buf)), 0);
}
else{
not_used = hv_store(rv_hash, "e", 1, newSVpv("", 0), 0);
}
/* =====> d */
siz = (self->key.d) ? mp_unsigned_bin_size(self->key.d) : 0;
if (siz>10000) {
croak("FATAL: key2hash failed - 'd' too big number");
}
if (siz>0) {
mp_tohex_with_leading_zero(self->key.d, buf, 20000, 0);
not_used = hv_store(rv_hash, "d", 1, newSVpv(buf, strlen(buf)), 0);
}
else{
not_used = hv_store(rv_hash, "d", 1, newSVpv("", 0), 0);
}
/* =====> N */
siz = (self->key.N) ? nsize : 0;
if (siz>10000) {
croak("FATAL: key2hash failed - 'N' too big number");
}
if (siz>0) {
mp_tohex_with_leading_zero(self->key.N, buf, 20000, 0);
not_used = hv_store(rv_hash, "N", 1, newSVpv(buf, strlen(buf)), 0);
}
else{
not_used = hv_store(rv_hash, "N", 1, newSVpv("", 0), 0);
}
/* =====> q */
siz = (self->key.q) ? mp_unsigned_bin_size(self->key.q) : 0;
if (siz>10000) {
croak("FATAL: key2hash failed - 'q' too big number");
}
if (siz>0) {
mp_tohex_with_leading_zero(self->key.q, buf, 20000, 0);
not_used = hv_store(rv_hash, "q", 1, newSVpv(buf, strlen(buf)), 0);
}
else{
not_used = hv_store(rv_hash, "q", 1, newSVpv("", 0), 0);
}
/* =====> p */
siz = (self->key.p) ? mp_unsigned_bin_size(self->key.p) : 0;
if (siz>10000) {
croak("FATAL: key2hash failed - 'p' too big number");
}
if (siz>0) {
mp_tohex_with_leading_zero(self->key.p, buf, 20000, 0);
not_used = hv_store(rv_hash, "p", 1, newSVpv(buf, strlen(buf)), 0);
}
else{
not_used = hv_store(rv_hash, "p", 1, newSVpv("", 0), 0);
}
/* =====> qP */
siz = (self->key.qP) ? mp_unsigned_bin_size(self->key.qP) : 0;
if (siz>10000) {
croak("FATAL: key2hash failed - 'qP' too big number");
}
if (siz>0) {
mp_tohex_with_leading_zero(self->key.qP, buf, 20000, 0);
not_used = hv_store(rv_hash, "qP", 2, newSVpv(buf, strlen(buf)), 0);
}
else{
not_used = hv_store(rv_hash, "qP", 2, newSVpv("", 0), 0);
}
/* =====> dP */
siz = (self->key.dP) ? mp_unsigned_bin_size(self->key.dP) : 0;
if (siz>10000) {
croak("FATAL: key2hash failed - 'dP' too big number");
}
if (siz>0) {
mp_tohex_with_leading_zero(self->key.dP, buf, 20000, 0);
not_used = hv_store(rv_hash, "dP", 2, newSVpv(buf, strlen(buf)), 0);
}
else{
not_used = hv_store(rv_hash, "dP", 2, newSVpv("", 0), 0);
}
/* =====> dQ */
siz = (self->key.dQ) ? mp_unsigned_bin_size(self->key.dQ) : 0;
if (siz>10000) {
croak("FATAL: key2hash failed - 'dQ' too big number");
}
if (siz>0) {
mp_tohex_with_leading_zero(self->key.dQ, buf, 20000, 0);
not_used = hv_store(rv_hash, "dQ", 2, newSVpv(buf, strlen(buf)), 0);
}
else{
not_used = hv_store(rv_hash, "dQ", 2, newSVpv("", 0), 0);
}
/* =====> size */
not_used = hv_store(rv_hash, "size", 4, newSViv(nsize), 0);
/* =====> type */
not_used = hv_store(rv_hash, "type", 4, newSViv(self->key.type), 0);
if (not_used) not_used = NULL; /* just silence the warning: variable 'not_used' set but not used */
RETVAL = newRV_noinc((SV*)rv_hash);
OUTPUT:
RETVAL
SV*
export_key_der(Crypt::PK::RSA self, char * type)
CODE:
{
int rv;
unsigned char out[4096];
unsigned long int out_len = 4096;
RETVAL = newSVpvn(NULL, 0); /* undef */
if (strnEQ(type, "private", 7)) {
rv = rsa_export(out, &out_len, PK_PRIVATE, &self->key);
if (rv != CRYPT_OK) croak("FATAL: rsa_export(PK_PRIVATE) failed: %s", error_to_string(rv));
RETVAL = newSVpvn((char*)out, out_len);
}
else if (strnEQ(type, "public", 6)) {
rv = rsa_export(out, &out_len, PK_PUBLIC|PK_STD, &self->key);
if (rv != CRYPT_OK) croak("FATAL: rsa_export(PK_PUBLIC|PK_STD) failed: %s", error_to_string(rv));
RETVAL = newSVpvn((char*)out, out_len);
}
else {
croak("FATAL: export_key_der invalid type '%s'", type);
}
}
OUTPUT:
RETVAL
SV *
_encrypt(Crypt::PK::RSA self, SV * data, char * padding, char * oaep_hash, SV * oaep_lparam)
CODE:
{
int rv, hash_id;
unsigned char *lparam_ptr=NULL;
STRLEN lparam_len=0;
unsigned char *data_ptr=NULL;
STRLEN data_len=0;
unsigned char buffer[1024];
unsigned long buffer_len = 1024;
data_ptr = (unsigned char *)SvPVbyte(data, data_len);
RETVAL = newSVpvn(NULL, 0); /* undef */
if (strnEQ(padding, "oaep", 4)) {
hash_id = find_hash(oaep_hash);
if(hash_id==-1) croak("FATAL: find_hash failed for '%s'", oaep_hash);
lparam_ptr = (unsigned char *)SvPVbyte(oaep_lparam, lparam_len);
rv = rsa_encrypt_key_ex(data_ptr, (unsigned long)data_len, buffer, &buffer_len, lparam_ptr, (unsigned long)lparam_len,
&self->pstate, self->pindex,
hash_id, LTC_PKCS_1_OAEP, &self->key);
if (rv != CRYPT_OK) croak("FATAL: rsa_encrypt_key_ex failed: %s", error_to_string(rv));
RETVAL = newSVpvn((char*)buffer, buffer_len);
}
else if (strnEQ(padding, "v1.5", 4)) {
rv = rsa_encrypt_key_ex(data_ptr, (unsigned long)data_len, buffer, &buffer_len, NULL, 0,
&self->pstate, self->pindex,
0, LTC_PKCS_1_V1_5, &self->key);
if (rv != CRYPT_OK) croak("FATAL: rsa_encrypt_key_ex failed: %s", error_to_string(rv));
RETVAL = newSVpvn((char*)buffer, buffer_len);
}
else if (strnEQ(padding, "none", 4)) {
/* raw RSA */
rv = ltc_mp.rsa_me(data_ptr, (unsigned long)data_len, buffer, &buffer_len, PK_PUBLIC, &self->key);
if (rv != CRYPT_OK) croak("FATAL: rsa_me failed: %s", error_to_string(rv));
RETVAL = newSVpvn((char*)buffer, buffer_len);
}
else {
croak("FATAL: rsa_encrypt invalid padding '%s'", padding);
}
}
OUTPUT:
RETVAL
SV *
_decrypt(Crypt::PK::RSA self, SV * data, char * padding, char * oaep_hash, SV * oaep_lparam)
CODE:
{
int rv, hash_id, stat;
unsigned char *lparam_ptr=NULL;
STRLEN lparam_len=0;
unsigned char *data_ptr=NULL;
STRLEN data_len=0;
unsigned char buffer[1024];
unsigned long buffer_len = 1024;
data_ptr = (unsigned char *)SvPVbyte(data, data_len);
RETVAL = newSVpvn(NULL, 0); /* undef */
if (strnEQ(padding, "oaep", 4)) {
hash_id = find_hash(oaep_hash);
if(hash_id==-1) croak("FATAL: find_hash failed for '%s'", oaep_hash);
lparam_ptr = (unsigned char *)SvPVbyte(oaep_lparam, lparam_len);
rv = rsa_decrypt_key_ex(data_ptr, (unsigned long)data_len, buffer, &buffer_len, lparam_ptr, (unsigned long)lparam_len,
hash_id, LTC_PKCS_1_OAEP, &stat, &self->key);
if (rv != CRYPT_OK) croak("FATAL: rsa_decrypt_key_ex failed: %s", error_to_string(rv));
if (stat != 1) croak("FATAL: rsa_decrypt - not valid OAEP packet");
RETVAL = newSVpvn((char*)buffer, buffer_len);
}
else if (strnEQ(padding, "v1.5", 4)) {
rv = rsa_decrypt_key_ex(data_ptr, (unsigned long)data_len, buffer, &buffer_len, NULL, 0,
0, LTC_PKCS_1_V1_5, &stat, &self->key);
if (rv != CRYPT_OK) croak("FATAL: rsa_decrypt_key_ex failed: %s", error_to_string(rv));
if (stat != 1) croak("FATAL: rsa_decrypt - invalid");
RETVAL = newSVpvn((char*)buffer, buffer_len);
}
else if (strnEQ(padding, "none", 4)) {
/* raw RSA */
rv = ltc_mp.rsa_me(data_ptr, (unsigned long)data_len, buffer, &buffer_len, PK_PRIVATE, &self->key);
if (rv != CRYPT_OK) croak("FATAL: rsa_me failed: %s", error_to_string(rv));
RETVAL = newSVpvn((char*)buffer, buffer_len);
}
else {
croak("FATAL: rsa_encrypt invalid padding '%s'", padding);
}
}
OUTPUT:
RETVAL
SV *
_sign(Crypt::PK::RSA self, SV * data, char * padding, char * hash_name=NULL, unsigned long saltlen=12)
CODE:
{
int rv, hash_id;
unsigned char *data_ptr=NULL;
STRLEN data_len=0;
unsigned char buffer[1024];
unsigned long buffer_len = 1024;
data_ptr = (unsigned char *)SvPVbyte(data, data_len);
RETVAL = newSVpvn(NULL, 0); /* undef */
if (strnEQ(padding, "pss", 3)) {
hash_id = find_hash(hash_name);
if(hash_id==-1) croak("FATAL: find_hash failed for '%s'", hash_name);
rv = rsa_sign_hash_ex(data_ptr, (unsigned long)data_len, buffer, &buffer_len, LTC_PKCS_1_PSS,
&self->pstate, self->pindex,
hash_id, saltlen, &self->key);
if (rv != CRYPT_OK) croak("FATAL: rsa_sign_hash_ex failed: %s", error_to_string(rv));
RETVAL = newSVpvn((char*)buffer, buffer_len);
}
else if (strnEQ(padding, "v1.5", 4)) {
hash_id = find_hash(hash_name);
if(hash_id==-1) croak("FATAL: find_hash failed for '%s'", hash_name);
rv = rsa_sign_hash_ex(data_ptr, (unsigned long)data_len, buffer, &buffer_len, LTC_PKCS_1_V1_5,
&self->pstate, self->pindex,
hash_id, 0, &self->key);
if (rv != CRYPT_OK) croak("FATAL: rsa_sign_hash_ex failed: %s", error_to_string(rv));
RETVAL = newSVpvn((char*)buffer, buffer_len);
}
else if (strnEQ(padding, "none", 4)) {
/* raw RSA */
rv = ltc_mp.rsa_me(data_ptr, (unsigned long)data_len, buffer, &buffer_len, PK_PRIVATE, &self->key);
if (rv != CRYPT_OK) croak("FATAL: rsa_me failed: %s", error_to_string(rv));
RETVAL = newSVpvn((char*)buffer, buffer_len);
}
else {
croak("FATAL: rsa_sign invalid padding '%s'", padding);
}
}
OUTPUT:
RETVAL
int
_verify(Crypt::PK::RSA self, SV * sig, SV * data, char * padding, char * hash_name=NULL, unsigned long saltlen=12)
CODE:
{
int rv, hash_id, stat;
unsigned char *data_ptr=NULL;
STRLEN data_len=0;
unsigned char *sig_ptr=NULL;
STRLEN sig_len=0;
unsigned char buffer[1024];
unsigned long i, buffer_len = 1024;
data_ptr = (unsigned char *)SvPVbyte(data, data_len);
sig_ptr = (unsigned char *)SvPVbyte(sig, sig_len);
RETVAL = 1;
if (strnEQ(padding, "pss", 3)) {
hash_id = find_hash(hash_name);
if(hash_id==-1) croak("FATAL: find_hash failed for '%s'", hash_name);
rv = rsa_verify_hash_ex(sig_ptr, (unsigned long)sig_len, data_ptr, (unsigned long)data_len, LTC_PKCS_1_PSS,
hash_id, saltlen, &stat, &self->key);
if (rv != CRYPT_OK || stat != 1) RETVAL = 0;
}
else if (strnEQ(padding, "v1.5", 4)) {
hash_id = find_hash(hash_name);
if(hash_id==-1) croak("FATAL: find_hash failed for '%s'", hash_name);
rv = rsa_verify_hash_ex(sig_ptr, (unsigned long)sig_len, data_ptr, (unsigned long)data_len, LTC_PKCS_1_V1_5,
hash_id, 0, &stat, &self->key);
if (rv != CRYPT_OK || stat != 1) RETVAL = 0;
}
else if (strnEQ(padding, "none", 4)) {
/* raw RSA */
Zero(buffer, buffer_len, unsigned char);
rv = ltc_mp.rsa_me(sig_ptr, (unsigned long)sig_len, buffer, &buffer_len, PK_PUBLIC, &self->key);
if (rv != CRYPT_OK) croak("FATAL: rsa_me failed: %s", error_to_string(rv));
if (data_len <= buffer_len && buffer_len > 0 && data_len > 0) {
for (i = 0; i < buffer_len - data_len; i++) if (buffer[i] != 0) RETVAL = 0;
if (memNE(data_ptr, buffer + buffer_len - data_len, data_len)) RETVAL = 0;
}
else {
RETVAL = 0;
}
}
else {
croak("FATAL: rsa_verify invalid padding '%s'", padding);
}
}
OUTPUT:
RETVAL
void
DESTROY(Crypt::PK::RSA self)
CODE:
if (self->key.type != -1) { rsa_free(&self->key); self->key.type = -1; }
Safefree(self);