276 lines
8.9 KiB
PHP
276 lines
8.9 KiB
PHP
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MODULE = CryptX PACKAGE = Crypt::PK::DSA
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Crypt::PK::DSA
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_new()
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CODE:
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{
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int rv;
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Newz(0, RETVAL, 1, struct dsa_struct);
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if (!RETVAL) croak("FATAL: Newz failed");
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RETVAL->key.type = -1;
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RETVAL->pindex = find_prng("chacha20");
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if(RETVAL->pindex==-1) croak("FATAL: find_prng('chacha20') failed");
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rv = rng_make_prng(320, RETVAL->pindex, &RETVAL->pstate, NULL); /* 320bits = 40bytes */
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if (rv != CRYPT_OK) croak("FATAL: rng_make_prng failed: %s", error_to_string(rv));
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}
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OUTPUT:
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RETVAL
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void
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generate_key(Crypt::PK::DSA self, int group_size=30, int modulus_size=256)
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PPCODE:
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{
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int rv;
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/* gen the key */
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rv = dsa_make_key(&self->pstate, self->pindex, group_size, modulus_size, &self->key);
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if (rv != CRYPT_OK) croak("FATAL: dsa_make_key failed: %s", error_to_string(rv));
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XPUSHs(ST(0)); /* return self */
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}
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void
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_import(Crypt::PK::DSA self, SV * key_data)
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PPCODE:
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{
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int rv;
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unsigned char *data=NULL;
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STRLEN data_len=0;
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data = (unsigned char *)SvPVbyte(key_data, data_len);
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if (self->key.type != -1) { dsa_free(&self->key); self->key.type = -1; }
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rv = dsa_import(data, (unsigned long)data_len, &self->key);
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if (rv != CRYPT_OK) croak("FATAL: dsa_import failed: %s", error_to_string(rv));
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XPUSHs(ST(0)); /* return self */
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}
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void
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_import_hex(Crypt::PK::DSA self, char *p, char *q, char *g, char *x, char *y)
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PPCODE:
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{
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int rv;
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if (self->key.type != -1) { dsa_free(&self->key); self->key.type = -1; }
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rv = dsa_import_radix(16, p, q, g, x, y, &self->key);
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if (rv != CRYPT_OK) croak("FATAL: dsa_import_radix failed: %s", error_to_string(rv));
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XPUSHs(ST(0)); /* return self */
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}
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int
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is_private(Crypt::PK::DSA self)
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CODE:
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if (self->key.type == -1 || self->key.qord <= 0) XSRETURN_UNDEF;
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RETVAL = (self->key.type == PK_PRIVATE) ? 1 : 0;
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OUTPUT:
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RETVAL
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int
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size(Crypt::PK::DSA self)
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CODE:
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if (self->key.type == -1 || self->key.qord <= 0) XSRETURN_UNDEF;
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RETVAL = mp_unsigned_bin_size(self->key.g);
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OUTPUT:
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RETVAL
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int
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size_q(Crypt::PK::DSA self)
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CODE:
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if (self->key.type == -1 || self->key.qord <= 0) XSRETURN_UNDEF;
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RETVAL = self->key.qord;
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OUTPUT:
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RETVAL
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SV*
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key2hash(Crypt::PK::DSA self)
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PREINIT:
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HV *rv_hash;
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long siz, qsize, psize;
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char buf[20001];
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SV **not_used;
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CODE:
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if (self->key.type == -1 || self->key.qord <= 0) XSRETURN_UNDEF;
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qsize = mp_unsigned_bin_size(self->key.q);
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psize = mp_unsigned_bin_size(self->key.p);
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rv_hash = newHV();
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/* =====> g */
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siz = (self->key.g) ? mp_unsigned_bin_size(self->key.g) : 0;
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if (siz>10000) {
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croak("FATAL: key2hash failed - 'g' too big number");
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}
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if (siz>0) {
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mp_tohex_with_leading_zero(self->key.g, buf, 20000, 0);
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not_used = hv_store(rv_hash, "g", 1, newSVpv(buf, strlen(buf)), 0);
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}
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else{
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not_used = hv_store(rv_hash, "g", 1, newSVpv("", 0), 0);
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}
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/* =====> q */
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siz = (self->key.q) ? mp_unsigned_bin_size(self->key.q) : 0;
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if (siz>10000) {
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croak("FATAL: key2hash failed - 'q' too big number");
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}
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if (siz>0) {
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mp_tohex_with_leading_zero(self->key.q, buf, 20000, 0);
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not_used = hv_store(rv_hash, "q", 1, newSVpv(buf, strlen(buf)), 0);
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}
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else{
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not_used = hv_store(rv_hash, "q", 1, newSVpv("", 0), 0);
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}
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/* =====> p */
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siz = (self->key.p) ? mp_unsigned_bin_size(self->key.p) : 0;
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if (siz>10000) {
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croak("FATAL: key2hash failed - 'p' too big number");
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}
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if (siz>0) {
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mp_tohex_with_leading_zero(self->key.p, buf, 20000, 0);
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not_used = hv_store(rv_hash, "p", 1, newSVpv(buf, strlen(buf)), 0);
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}
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else{
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not_used = hv_store(rv_hash, "p", 1, newSVpv("", 0), 0);
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}
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/* =====> x */
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siz = (self->key.x) ? mp_unsigned_bin_size(self->key.x) : 0;
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if (siz>10000) {
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croak("FATAL: key2hash failed - 'x' too big number");
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}
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if (siz>0) {
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mp_tohex_with_leading_zero(self->key.x, buf, 20000, qsize*2);
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not_used = hv_store(rv_hash, "x", 1, newSVpv(buf, strlen(buf)), 0);
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}
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else{
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not_used = hv_store(rv_hash, "x", 1, newSVpv("", 0), 0);
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}
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/* =====> y */
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siz = (self->key.y) ? mp_unsigned_bin_size(self->key.y) : 0;
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if (siz>10000) {
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croak("FATAL: key2hash failed - 'y' too big number");
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}
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if (siz>0) {
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mp_tohex_with_leading_zero(self->key.y, buf, 20000, psize*2);
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not_used = hv_store(rv_hash, "y", 1, newSVpv(buf, strlen(buf)), 0);
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}
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else{
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not_used = hv_store(rv_hash, "y", 1, newSVpv("", 0), 0);
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}
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/* =====> size */
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not_used = hv_store(rv_hash, "size", 4, newSViv(qsize), 0);
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/* =====> type */
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not_used = hv_store(rv_hash, "type", 4, newSViv(self->key.type), 0);
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if (not_used) not_used = NULL; /* just silence the warning: variable 'not_used' set but not used */
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RETVAL = newRV_noinc((SV*)rv_hash);
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OUTPUT:
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RETVAL
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SV *
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export_key_der(Crypt::PK::DSA self, char * type)
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CODE:
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{
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int rv;
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unsigned char out[4096];
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unsigned long int out_len = 4096;
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RETVAL = newSVpvn(NULL, 0); /* undef */
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if (strnEQ(type, "private", 7)) {
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rv = dsa_export(out, &out_len, PK_PRIVATE|PK_STD, &self->key);
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if (rv != CRYPT_OK) croak("FATAL: dsa_export(PK_PRIVATE|PK_STD) failed: %s", error_to_string(rv));
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RETVAL = newSVpvn((char*)out, out_len);
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}
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else if (strnEQ(type, "public", 6)) {
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rv = dsa_export(out, &out_len, PK_PUBLIC|PK_STD, &self->key);
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if (rv != CRYPT_OK) croak("FATAL: dsa_export(PK_PUBLIC|PK_STD) failed: %s", error_to_string(rv));
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RETVAL = newSVpvn((char*)out, out_len);
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}
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else {
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croak("FATAL: export_key_der invalid type '%s'", type);
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}
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}
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OUTPUT:
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RETVAL
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SV *
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_encrypt(Crypt::PK::DSA self, SV * data, char * hash_name)
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CODE:
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{
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int rv, hash_id;
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unsigned char *data_ptr=NULL;
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STRLEN data_len=0;
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unsigned char buffer[1024];
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unsigned long buffer_len = 1024;
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data_ptr = (unsigned char *)SvPVbyte(data, data_len);
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hash_id = find_hash(hash_name);
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if(hash_id==-1) croak("FATAL: find_hash failed for '%s'", hash_name);
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rv = dsa_encrypt_key(data_ptr, (unsigned long)data_len, buffer, &buffer_len,
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&self->pstate, self->pindex,
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hash_id, &self->key);
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if (rv != CRYPT_OK) croak("FATAL: dsa_encrypt_key failed: %s", error_to_string(rv));
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RETVAL = newSVpvn((char*)buffer, buffer_len);
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}
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OUTPUT:
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RETVAL
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SV *
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_decrypt(Crypt::PK::DSA self, SV * data)
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CODE:
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{
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int rv;
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unsigned char *data_ptr=NULL;
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STRLEN data_len=0;
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unsigned char buffer[1024];
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unsigned long buffer_len = 1024;
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data_ptr = (unsigned char *)SvPVbyte(data, data_len);
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rv = dsa_decrypt_key(data_ptr, (unsigned long)data_len, buffer, &buffer_len, &self->key);
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if (rv != CRYPT_OK) croak("FATAL: dsa_decrypt_key_ex failed: %s", error_to_string(rv));
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RETVAL = newSVpvn((char*)buffer, buffer_len);
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}
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OUTPUT:
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RETVAL
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SV *
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_sign(Crypt::PK::DSA self, SV * data)
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CODE:
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{
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int rv;
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unsigned char *data_ptr=NULL;
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STRLEN data_len=0;
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unsigned char buffer[1024];
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unsigned long buffer_len = 1024;
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data_ptr = (unsigned char *)SvPVbyte(data, data_len);
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rv = dsa_sign_hash(data_ptr, (unsigned long)data_len, buffer, &buffer_len,
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&self->pstate, self->pindex,
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&self->key);
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if (rv != CRYPT_OK) croak("FATAL: dsa_sign_hash_ex failed: %s", error_to_string(rv));
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RETVAL = newSVpvn((char*)buffer, buffer_len);
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}
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OUTPUT:
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RETVAL
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int
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_verify(Crypt::PK::DSA self, SV * sig, SV * data)
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CODE:
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{
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int rv, stat;
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unsigned char *data_ptr=NULL;
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STRLEN data_len=0;
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unsigned char *sig_ptr=NULL;
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STRLEN sig_len=0;
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data_ptr = (unsigned char *)SvPVbyte(data, data_len);
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sig_ptr = (unsigned char *)SvPVbyte(sig, sig_len);
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RETVAL = 1;
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rv = dsa_verify_hash(sig_ptr, (unsigned long)sig_len, data_ptr, (unsigned long)data_len, &stat, &self->key);
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if (rv != CRYPT_OK || stat != 1) RETVAL = 0;
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}
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OUTPUT:
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RETVAL
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void
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DESTROY(Crypt::PK::DSA self)
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CODE:
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if (self->key.type != -1) { dsa_free(&self->key); self->key.type = -1; }
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Safefree(self);
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