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|
MODULE = CryptX PACKAGE = Crypt::PK::DSA
PROTOTYPES: DISABLE
Crypt::PK::DSA
_new(Class)
CODE:
{
int rv;
Newz(0, RETVAL, 1, struct dsa_struct);
if (!RETVAL) croak("FATAL: Newz failed");
RETVAL->key.type = -1;
RETVAL->pindex = find_prng("chacha20");
if (RETVAL->pindex == -1) {
Safefree(RETVAL);
croak("FATAL: find_prng('chacha20') failed");
}
rv = rng_make_prng(320, RETVAL->pindex, &RETVAL->pstate, NULL); /* 320bits = 40bytes */
if (rv != CRYPT_OK) {
Safefree(RETVAL);
croak("FATAL: rng_make_prng failed: %s", error_to_string(rv));
}
}
OUTPUT:
RETVAL
void
_generate_key_size(Crypt::PK::DSA self, int group_size=30, int modulus_size=256)
PPCODE:
{
int rv;
/* gen the key */
rv = dsa_make_key(&self->pstate, self->pindex, group_size, modulus_size, &self->key);
if (rv != CRYPT_OK) croak("FATAL: dsa_make_key failed: %s", error_to_string(rv));
XPUSHs(ST(0)); /* return self */
}
void
_generate_key_dsaparam(Crypt::PK::DSA self, SV * dsaparam)
PPCODE:
{
int rv;
unsigned char *data=NULL;
STRLEN data_len=0;
data = (unsigned char *)SvPVbyte(dsaparam, data_len);
/* load d p q */
rv = dsa_set_pqg_dsaparam(data, (unsigned long)data_len, &self->key);
if (rv != CRYPT_OK) croak("FATAL: dsa_set_pqg_dsaparam failed: %s", error_to_string(rv));
/* gen the key */
rv = dsa_generate_key(&self->pstate, self->pindex, &self->key);
if (rv != CRYPT_OK) croak("FATAL: dsa_generate_key failed: %s", error_to_string(rv));
XPUSHs(ST(0)); /* return self */
}
void
_generate_key_pqg_hex(Crypt::PK::DSA self, char *p, char *q, char *g)
PPCODE:
{
int rv;
unsigned char pbin[512], qbin[512], gbin[512];
unsigned long plen=sizeof(pbin), qlen=sizeof(qbin), glen=sizeof(gbin);
if (!p || !strlen(p) || !q || !strlen(q) || !g || !strlen(g)) {
croak("FATAL: generate_key_pqg_hex incomplete args");
}
/* set p q g */
rv = radix_to_bin(p, 16, pbin, &plen);
if (rv != CRYPT_OK) croak("FATAL: radix_to_bin(p) failed: %s", error_to_string(rv));
rv = radix_to_bin(q, 16, qbin, &qlen);
if (rv != CRYPT_OK) croak("FATAL: radix_to_bin(q) failed: %s", error_to_string(rv));
rv = radix_to_bin(g, 16, gbin, &glen);
if (rv != CRYPT_OK) croak("FATAL: radix_to_bin(g) failed: %s", error_to_string(rv));
rv = dsa_set_pqg(pbin, plen, qbin, qlen, gbin, glen, &self->key);
if (rv != CRYPT_OK) croak("FATAL: dsa_set_pqg failed: %s", error_to_string(rv));
/* gen the key */
rv = dsa_generate_key(&self->pstate, self->pindex, &self->key);
if (rv != CRYPT_OK) croak("FATAL: dsa_generate_key failed: %s", error_to_string(rv));
XPUSHs(ST(0)); /* return self */
}
void
_import(Crypt::PK::DSA 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) { dsa_free(&self->key); self->key.type = -1; }
rv = dsa_import(data, (unsigned long)data_len, &self->key);
if (rv != CRYPT_OK) croak("FATAL: dsa_import failed: %s", error_to_string(rv));
XPUSHs(ST(0)); /* return self */
}
void
_import_pkcs8(Crypt::PK::DSA self, SV * key_data, SV * passwd)
PPCODE:
{
int rv;
unsigned char *data = NULL;
STRLEN data_len = 0;
password_ctx pw_ctx = { cryptx_internal_password_cb_getpw, cryptx_internal_password_cb_free, passwd };
data = (unsigned char *)SvPVbyte(key_data, data_len);
if (self->key.type != -1) { dsa_free(&self->key); self->key.type = -1; }
if (SvOK(passwd)) {
rv = dsa_import_pkcs8(data, (unsigned long)data_len, &pw_ctx, &self->key);
}
else {
rv = dsa_import_pkcs8(data, (unsigned long)data_len, NULL, &self->key);
}
if (rv != CRYPT_OK) croak("FATAL: dsa_import_pkcs8 failed: %s", error_to_string(rv));
XPUSHs(ST(0)); /* return self */
}
void
_import_pem(Crypt::PK::DSA self, SV * key_data, SV * passwd)
PPCODE:
{
int rv;
unsigned char *data = NULL;
STRLEN data_len = 0;
password_ctx pw_ctx = { cryptx_internal_password_cb_getpw, cryptx_internal_password_cb_free, passwd };
ltc_pka_key key_from_pem;
data = (unsigned char *)SvPVbyte(key_data, data_len);
if (self->key.type != -1) { dsa_free(&self->key); self->key.type = -1; }
if (SvOK(passwd)) {
rv = pem_decode_pkcs(data, (unsigned long)data_len, &key_from_pem, &pw_ctx);
}
else {
rv = pem_decode_pkcs(data, (unsigned long)data_len, &key_from_pem, NULL);
}
if (rv != CRYPT_OK) croak("FATAL: pem_decode_pkcs failed: %s", error_to_string(rv));
if (key_from_pem.id != LTC_PKA_DSA) croak("FATAL: pem_decode_pkcs decoded non-DSA key");
self->key = key_from_pem.u.dsa;
XPUSHs(ST(0)); /* return self */
}
void
_import_openssh(Crypt::PK::DSA self, SV * key_data, SV * passwd)
PPCODE:
{
int rv;
unsigned char *data = NULL;
STRLEN data_len = 0;
password_ctx pw_ctx = { cryptx_internal_password_cb_getpw, cryptx_internal_password_cb_free, passwd };
ltc_pka_key key_from_pem;
data = (unsigned char *)SvPVbyte(key_data, data_len);
if (self->key.type != -1) { dsa_free(&self->key); self->key.type = -1; }
if (SvOK(passwd)) {
rv = pem_decode_openssh(data, (unsigned long)data_len, &key_from_pem, &pw_ctx);
}
else {
rv = pem_decode_openssh(data, (unsigned long)data_len, &key_from_pem, NULL);
}
if (rv != CRYPT_OK) croak("FATAL: pem_decode_openssh failed: %s", error_to_string(rv));
if (key_from_pem.id != LTC_PKA_DSA) croak("FATAL: pem_decode_openssh decoded non-DSA key");
self->key = key_from_pem.u.dsa;
XPUSHs(ST(0)); /* return self */
}
void
_import_hex(Crypt::PK::DSA self, char *p, char *q, char *g, char *x, char *y)
PPCODE:
{
int rv;
unsigned char pbin[512], qbin[512], gbin[512], xbin[512], ybin[512];
unsigned long plen=sizeof(pbin), qlen=sizeof(qbin), glen=sizeof(gbin), xlen=sizeof(xbin), ylen=sizeof(ybin);
if (self->key.type != -1) { dsa_free(&self->key); self->key.type = -1; }
if (p && strlen(p) > 0 && q && strlen(q) > 0 && g && strlen(g) > 0 && y && strlen(y) > 0) {
rv = radix_to_bin(p, 16, pbin, &plen);
if (rv != CRYPT_OK) croak("FATAL: radix_to_bin(p) failed: %s", error_to_string(rv));
rv = radix_to_bin(q, 16, qbin, &qlen);
if (rv != CRYPT_OK) croak("FATAL: radix_to_bin(q) failed: %s", error_to_string(rv));
rv = radix_to_bin(g, 16, gbin, &glen);
if (rv != CRYPT_OK) croak("FATAL: radix_to_bin(g) failed: %s", error_to_string(rv));
rv = dsa_set_pqg(pbin, plen, qbin, qlen, gbin, glen, &self->key);
if (rv != CRYPT_OK) croak("FATAL: dsa_set_pqg failed: %s", error_to_string(rv));
rv = radix_to_bin(y, 16, ybin, &ylen);
if (rv != CRYPT_OK) croak("FATAL: radix_to_bin(y) failed: %s", error_to_string(rv));
if (x && strlen(x) > 0) {
/* private */
rv = radix_to_bin(x, 16, xbin, &xlen);
if (rv != CRYPT_OK) croak("FATAL: radix_to_bin(x) failed: %s", error_to_string(rv));
rv = dsa_set_key(xbin, xlen, PK_PRIVATE, &self->key);
if (rv != CRYPT_OK) croak("FATAL: dsa_set_key failed: %s", error_to_string(rv));
}
else {
/* public */
rv = dsa_set_key(ybin, ylen, PK_PUBLIC, &self->key);
if (rv != CRYPT_OK) croak("FATAL: dsa_set_key failed: %s", error_to_string(rv));
}
}
XPUSHs(ST(0)); /* return self */
}
int
is_private(Crypt::PK::DSA self)
CODE:
if (self->key.type == -1 || self->key.qord <= 0) XSRETURN_UNDEF;
RETVAL = (self->key.type == PK_PRIVATE) ? 1 : 0;
OUTPUT:
RETVAL
size_t
size(Crypt::PK::DSA self)
CODE:
if (self->key.type == -1 || self->key.qord <= 0) XSRETURN_UNDEF;
RETVAL = mp_ubin_size(self->key.p);
OUTPUT:
RETVAL
size_t
size_q(Crypt::PK::DSA self)
CODE:
if (self->key.type == -1 || self->key.qord <= 0) XSRETURN_UNDEF;
RETVAL = mp_ubin_size(self->key.q);
OUTPUT:
RETVAL
SV*
key2hash(Crypt::PK::DSA self)
PREINIT:
HV *rv_hash;
size_t siz, qsize, psize;
char buf[20001];
SV **not_used;
CODE:
if (self->key.type == -1 || self->key.qord <= 0) XSRETURN_UNDEF;
qsize = mp_ubin_size(self->key.q);
psize = mp_ubin_size(self->key.p);
rv_hash = newHV();
/* g */
siz = (self->key.g) ? mp_ubin_size(self->key.g) : 0;
if (siz>10000) {
croak("FATAL: key2hash failed - 'g' too big number");
}
if (siz>0) {
cryptx_internal_mp2hex_with_leading_zero(self->key.g, buf, 20000, 0);
not_used = hv_store(rv_hash, "g", 1, newSVpv(buf, strlen(buf)), 0);
}
else{
not_used = hv_store(rv_hash, "g", 1, newSVpv("", 0), 0);
}
/* q */
siz = (self->key.q) ? mp_ubin_size(self->key.q) : 0;
if (siz>10000) {
croak("FATAL: key2hash failed - 'q' too big number");
}
if (siz>0) {
cryptx_internal_mp2hex_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_ubin_size(self->key.p) : 0;
if (siz>10000) {
croak("FATAL: key2hash failed - 'p' too big number");
}
if (siz>0) {
cryptx_internal_mp2hex_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);
}
/* x */
siz = (self->key.x) ? mp_ubin_size(self->key.x) : 0;
if (siz>10000) {
croak("FATAL: key2hash failed - 'x' too big number");
}
if (siz>0) {
cryptx_internal_mp2hex_with_leading_zero(self->key.x, buf, 20000, qsize*2);
not_used = hv_store(rv_hash, "x", 1, newSVpv(buf, strlen(buf)), 0);
}
else{
not_used = hv_store(rv_hash, "x", 1, newSVpv("", 0), 0);
}
/* y */
siz = (self->key.y) ? mp_ubin_size(self->key.y) : 0;
if (siz>10000) {
croak("FATAL: key2hash failed - 'y' too big number");
}
if (siz>0) {
cryptx_internal_mp2hex_with_leading_zero(self->key.y, buf, 20000, psize*2);
not_used = hv_store(rv_hash, "y", 1, newSVpv(buf, strlen(buf)), 0);
}
else{
not_used = hv_store(rv_hash, "y", 1, newSVpv("", 0), 0);
}
/* size */
not_used = hv_store(rv_hash, "size", 4, newSViv(qsize), 0);
/* type */
not_used = hv_store(rv_hash, "type", 4, newSViv(self->key.type), 0);
LTC_UNUSED_PARAM(not_used);
RETVAL = newRV_noinc((SV*)rv_hash);
OUTPUT:
RETVAL
SV *
export_key_der(Crypt::PK::DSA 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 = dsa_export(out, &out_len, PK_PRIVATE|PK_STD, &self->key);
if (rv != CRYPT_OK) croak("FATAL: dsa_export(PK_PRIVATE|PK_STD) failed: %s", error_to_string(rv));
RETVAL = newSVpvn((char*)out, out_len);
}
else if (strnEQ(type, "public", 6)) {
rv = dsa_export(out, &out_len, PK_PUBLIC|PK_STD, &self->key);
if (rv != CRYPT_OK) croak("FATAL: dsa_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::DSA self, SV * data, const char * hash_name = "SHA1")
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);
hash_id = cryptx_internal_find_hash(hash_name);
if (hash_id == -1) croak("FATAL: find_hash failed for '%s'", hash_name);
rv = dsa_encrypt_key(data_ptr, (unsigned long)data_len, buffer, &buffer_len,
&self->pstate, self->pindex,
hash_id, &self->key);
if (rv != CRYPT_OK) croak("FATAL: dsa_encrypt_key failed: %s", error_to_string(rv));
RETVAL = newSVpvn((char*)buffer, buffer_len);
}
OUTPUT:
RETVAL
SV *
decrypt(Crypt::PK::DSA self, SV * data)
CODE:
{
int rv;
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);
rv = dsa_decrypt_key(data_ptr, (unsigned long)data_len, buffer, &buffer_len, &self->key);
if (rv != CRYPT_OK) croak("FATAL: dsa_decrypt_key_ex failed: %s", error_to_string(rv));
RETVAL = newSVpvn((char*)buffer, buffer_len);
}
OUTPUT:
RETVAL
SV *
sign_hash(Crypt::PK::DSA self, SV * data, const char * hash_name = "SHA1")
ALIAS:
sign_message = 1
CODE:
{
int rv, id;
unsigned char buffer[1024], tmp[MAXBLOCKSIZE], *data_ptr = NULL;
unsigned long tmp_len = MAXBLOCKSIZE, buffer_len = 1024;
STRLEN data_len = 0;
data_ptr = (unsigned char *)SvPVbyte(data, data_len);
if (ix == 1) {
id = cryptx_internal_find_hash(hash_name);
if (id == -1) croak("FATAL: find_hash failed for '%s'", hash_name);
rv = hash_memory(id, data_ptr, (unsigned long)data_len, tmp, &tmp_len);
if (rv != CRYPT_OK) croak("FATAL: hash_memory failed: %s", error_to_string(rv));
data_ptr = tmp;
data_len = tmp_len;
}
rv = dsa_sign_hash(data_ptr, (unsigned long)data_len, buffer, &buffer_len,
&self->pstate, self->pindex,
&self->key);
if (rv != CRYPT_OK) croak("FATAL: dsa_sign_hash_ex failed: %s", error_to_string(rv));
RETVAL = newSVpvn((char*)buffer, buffer_len);
}
OUTPUT:
RETVAL
int
verify_hash(Crypt::PK::DSA self, SV * sig, SV * data, const char * hash_name = "SHA1")
ALIAS:
verify_message = 1
CODE:
{
int rv, stat, id;
unsigned char tmp[MAXBLOCKSIZE], *data_ptr = NULL, *sig_ptr = NULL;
unsigned long tmp_len = MAXBLOCKSIZE;
STRLEN data_len = 0, sig_len = 0;
data_ptr = (unsigned char *)SvPVbyte(data, data_len);
sig_ptr = (unsigned char *)SvPVbyte(sig, sig_len);
if (ix == 1) {
id = cryptx_internal_find_hash(hash_name);
if (id == -1) croak("FATAL: find_hash failed for '%s'", hash_name);
rv = hash_memory(id, data_ptr, (unsigned long)data_len, tmp, &tmp_len);
if (rv != CRYPT_OK) croak("FATAL: hash_memory failed: %s", error_to_string(rv));
data_ptr = tmp;
data_len = tmp_len;
}
RETVAL = 1;
stat = 0;
rv = dsa_verify_hash(sig_ptr, (unsigned long)sig_len, data_ptr, (unsigned long)data_len, &stat, &self->key);
if (rv != CRYPT_OK || stat != 1) RETVAL = 0;
}
OUTPUT:
RETVAL
void
DESTROY(Crypt::PK::DSA self)
CODE:
if (self->key.type != -1) { dsa_free(&self->key); self->key.type = -1; }
Safefree(self);
|
