MODULE = CryptX PACKAGE = Crypt::PK::RSA
PROTOTYPES: DISABLE
Crypt::PK::RSA
_new(Class)
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");
RETVAL->last_pid = (IV)PerlProc_getpid();
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(Crypt::PK::RSA self, int key_size=256, long key_e=65537)
PPCODE:
{
/* key_size is in octets */
int rv;
cryptx_internal_pk_prng_reseed(&self->pstate, self->pindex, &self->last_pid);
/* 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, 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) { rsa_free(&self->key); self->key.type = -1; }
if (SvOK(passwd)) {
rv = rsa_import_pkcs8(data, (unsigned long)data_len, &pw_ctx, &self->key);
}
else {
rv = rsa_import_pkcs8(data, (unsigned long)data_len, NULL, &self->key);
}
if (rv != CRYPT_OK) croak("FATAL: rsa_import_pkcs8 failed: %s", error_to_string(rv));
XPUSHs(ST(0)); /* return self */
}
void
_import_pem(Crypt::PK::RSA 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) { rsa_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_RSA) croak("FATAL: pem_decode_pkcs decoded non-RSA key");
self->key = key_from_pem.u.rsa;
XPUSHs(ST(0)); /* return self */
}
void
_import_openssh(Crypt::PK::RSA 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) { rsa_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_RSA) croak("FATAL: pem_decode_openssh decoded non-RSA key");
self->key = key_from_pem.u.rsa;
XPUSHs(ST(0)); /* return self */
}
void
_import_x509(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_x509(data, (unsigned long)data_len, &self->key);
if (rv != CRYPT_OK) croak("FATAL: rsa_import_x509 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;
unsigned char Nbin[1024], ebin[128], dbin[1024], pbin[512], qbin[512], dPbin[512], dQbin[512], qPbin[512];
unsigned long Nlen=sizeof(Nbin), elen=sizeof(ebin), dlen=sizeof(dbin), plen=sizeof(pbin),
qlen=sizeof(qbin), dPlen=sizeof(dPbin), dQlen=sizeof(dQbin), qPlen=sizeof(qPbin);
rv = radix_to_bin(N, 16, Nbin, &Nlen);
if (rv != CRYPT_OK) croak("FATAL: radix_to_bin(N) failed: %s", error_to_string(rv));
rv = radix_to_bin(e, 16, ebin, &elen);
if (rv != CRYPT_OK) croak("FATAL: radix_to_bin(e) failed: %s", error_to_string(rv));
if (d && strlen(d) > 0) {
/* private */
rv = radix_to_bin(d, 16, dbin, &dlen);
if (rv != CRYPT_OK) croak("FATAL: radix_to_bin(d) failed: %s", error_to_string(rv));
rv = rsa_set_key(Nbin, Nlen, ebin, elen, dbin, dlen, &self->key);
if (rv != CRYPT_OK) croak("FATAL: rsa_set_key failed: %s", error_to_string(rv));
}
else {
/* public */
rv = rsa_set_key(Nbin, Nlen, ebin, elen, NULL, 0, &self->key);
if (rv != CRYPT_OK) croak("FATAL: rsa_set_key failed: %s", error_to_string(rv));
}
if (p && strlen(p) > 0 && q && strlen(q) > 0) {
/* private only */
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 = rsa_set_factors(pbin, plen, qbin, qlen, &self->key);
if (rv != CRYPT_OK) croak("FATAL: rsa_set_factors failed: %s", error_to_string(rv));
}
if (dP && strlen(dP) > 0 && dQ && strlen(dQ) > 0 && qP && strlen(qP) > 0) {
/* private only */
rv = radix_to_bin(dP, 16, dPbin, &dPlen);
if (rv != CRYPT_OK) croak("FATAL: radix_to_bin(dP) failed: %s", error_to_string(rv));
rv = radix_to_bin(dQ, 16, dQbin, &dQlen);
if (rv != CRYPT_OK) croak("FATAL: radix_to_bin(dQ) failed: %s", error_to_string(rv));
rv = radix_to_bin(qP, 16, qPbin, &qPlen);
if (rv != CRYPT_OK) croak("FATAL: radix_to_bin(qP) failed: %s", error_to_string(rv));
rv = rsa_set_crt_params(dPbin, dPlen, dQbin, dQlen, qPbin, qPlen, &self->key);
if (rv != CRYPT_OK) croak("FATAL: rsa_set_crt_params 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
size_t
size(Crypt::PK::RSA self)
CODE:
if (self->key.type == -1 || self->key.N == NULL) XSRETURN_UNDEF;
RETVAL = mp_ubin_size(self->key.N);
OUTPUT:
RETVAL
SV*
key2hash(Crypt::PK::RSA self)
PREINIT:
HV *rv_hash;
size_t siz, nsize;
char buf[20001];
SV **not_used;
CODE:
if (self->key.type == -1 || self->key.N == NULL) XSRETURN_UNDEF;
nsize = mp_ubin_size(self->key.N);
rv_hash = newHV();
/* e */
siz = (self->key.e) ? mp_ubin_size(self->key.e) : 0;
if (siz>10000) {
croak("FATAL: key2hash failed - 'e' too big number");
}
if (siz>0) {
cryptx_internal_mp2hex_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_ubin_size(self->key.d) : 0;
if (siz>10000) {
croak("FATAL: key2hash failed - 'd' too big number");
}
if (siz>0) {
cryptx_internal_mp2hex_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) {
cryptx_internal_mp2hex_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_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);
}
/* qP */
siz = (self->key.qP) ? mp_ubin_size(self->key.qP) : 0;
if (siz>10000) {
croak("FATAL: key2hash failed - 'qP' too big number");
}
if (siz>0) {
cryptx_internal_mp2hex_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_ubin_size(self->key.dP) : 0;
if (siz>10000) {
croak("FATAL: key2hash failed - 'dP' too big number");
}
if (siz>0) {
cryptx_internal_mp2hex_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_ubin_size(self->key.dQ) : 0;
if (siz>10000) {
croak("FATAL: key2hash failed - 'dQ' too big number");
}
if (siz>0) {
cryptx_internal_mp2hex_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);
LTC_UNUSED_PARAM(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 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, const char * padding = "oaep", const char * mgf_hash = "SHA1", SV * oaep_lparam = NULL, const char * lparam_hash = NULL)
CODE:
{
int rv, mgf_hash_id, lparam_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;
ltc_rsa_op_parameters rsa_oparams;
data_ptr = (unsigned char *)SvPVbyte(data, data_len);
RETVAL = newSVpvn(NULL, 0); /* undef */
cryptx_internal_pk_prng_reseed(&self->pstate, self->pindex, &self->last_pid);
if (strnEQ(padding, "oaep", 4)) {
mgf_hash_id = cryptx_internal_find_hash(mgf_hash);
if (mgf_hash_id == -1) croak("FATAL: find_hash failed for '%s'", mgf_hash);
if (lparam_hash) {
lparam_hash_id = cryptx_internal_find_hash(lparam_hash);
if (lparam_hash_id == -1) croak("FATAL: find_hash failed for '%s'", lparam_hash);
}
else {
lparam_hash_id = mgf_hash_id;
}
if (oaep_lparam) lparam_ptr = (unsigned char *)SvPVbyte(oaep_lparam, lparam_len);
rsa_oparams.prng = &self->pstate;
rsa_oparams.wprng = self->pindex;
rsa_oparams.padding = LTC_PKCS_1_OAEP;
rsa_oparams.u.crypt.lparam = lparam_ptr;
rsa_oparams.u.crypt.lparamlen = (unsigned long)lparam_len;
rsa_oparams.params.hash_idx = lparam_hash_id;
rsa_oparams.params.mgf1_hash_idx = mgf_hash_id;
rsa_oparams.params.saltlen = 0;
rv = rsa_encrypt_key_v2(data_ptr, (unsigned long)data_len, buffer, &buffer_len, &rsa_oparams, &self->key);
if (rv != CRYPT_OK) croak("FATAL: rsa_encrypt_key_v2/oaep failed: %s", error_to_string(rv));
RETVAL = newSVpvn((char*)buffer, buffer_len);
}
else if (strnEQ(padding, "v1.5", 4)) {
rsa_oparams.prng = &self->pstate;
rsa_oparams.wprng = self->pindex;
rsa_oparams.padding = LTC_PKCS_1_V1_5;
rsa_oparams.u.crypt.lparam = NULL; /* OAEP only */
rsa_oparams.u.crypt.lparamlen = 0; /* OAEP only */
rsa_oparams.params.hash_idx = -1; /* OAEP only */
rsa_oparams.params.mgf1_hash_idx = -1; /* OAEP only */
rsa_oparams.params.saltlen = 0; /* PSS only */
rv = rsa_encrypt_key_v2(data_ptr, (unsigned long)data_len, buffer, &buffer_len, &rsa_oparams, &self->key);
if (rv != CRYPT_OK) croak("FATAL: rsa_encrypt_key_v2/v1.5 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, const char * padding = "oaep", const char * mgf_hash = "SHA1", SV * oaep_lparam = NULL, const char * lparam_hash = NULL)
CODE:
{
int rv, lparam_hash_id, mgf_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;
ltc_rsa_op_parameters rsa_oparams;
data_ptr = (unsigned char *)SvPVbyte(data, data_len);
RETVAL = newSVpvn(NULL, 0); /* undef */
cryptx_internal_pk_prng_reseed(&self->pstate, self->pindex, &self->last_pid);
if (strnEQ(padding, "oaep", 4)) {
mgf_hash_id = cryptx_internal_find_hash(mgf_hash);
if (mgf_hash_id == -1) croak("FATAL: find_hash failed for '%s'", mgf_hash);
if (lparam_hash) {
lparam_hash_id = cryptx_internal_find_hash(lparam_hash);
if (lparam_hash_id == -1) croak("FATAL: find_hash failed for '%s'", lparam_hash);
}
else {
lparam_hash_id = mgf_hash_id;
}
if (oaep_lparam) lparam_ptr = (unsigned char *)SvPVbyte(oaep_lparam, lparam_len);
rsa_oparams.prng = NULL;
rsa_oparams.wprng = 0;
rsa_oparams.padding = LTC_PKCS_1_OAEP;
rsa_oparams.u.crypt.lparam = lparam_ptr;
rsa_oparams.u.crypt.lparamlen = (unsigned long)lparam_len;
rsa_oparams.params.hash_idx = lparam_hash_id;
rsa_oparams.params.mgf1_hash_idx = mgf_hash_id;
rsa_oparams.params.saltlen = 0;
rv = rsa_decrypt_key_v2(data_ptr, (unsigned long)data_len, buffer, &buffer_len, &rsa_oparams, &stat, &self->key);
if (rv != CRYPT_OK) croak("FATAL: rsa_decrypt_key_v2 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)) {
rsa_oparams.prng = &self->pstate;
rsa_oparams.wprng = self->pindex;
rsa_oparams.padding = LTC_PKCS_1_V1_5;
rsa_oparams.u.crypt.lparam = NULL; /* OAEP only */
rsa_oparams.u.crypt.lparamlen = 0; /* OAEP only */
rsa_oparams.params.hash_idx = -1; /* OAEP only */
rsa_oparams.params.mgf1_hash_idx = -1; /* OAEP only */
rsa_oparams.params.saltlen = 0; /* PSS only */
rv = rsa_decrypt_key_v2(data_ptr, (unsigned long)data_len, buffer, &buffer_len, &rsa_oparams, &stat, &self->key);
if (rv != CRYPT_OK) croak("FATAL: rsa_decrypt_key_v2 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_hash(Crypt::PK::RSA self, SV * data, const char * hash_name = "SHA1", const char * padding = "pss", unsigned long saltlen=12, const char * mgf_hash_name = NULL)
ALIAS:
sign_message = 1
CODE:
{
int rv, hash_id, mgf_hash_id;
unsigned char buffer[1024], tmp[MAXBLOCKSIZE], *data_ptr = NULL;
unsigned long tmp_len = MAXBLOCKSIZE, buffer_len = 1024;
STRLEN data_len = 0;
ltc_rsa_op_parameters rsa_oparams;
data_ptr = (unsigned char *)SvPVbyte(data, data_len);
cryptx_internal_pk_prng_reseed(&self->pstate, self->pindex, &self->last_pid);
if (ix == 1) {
hash_id = cryptx_internal_find_hash(hash_name);
if (hash_id == -1) croak("FATAL: find_hash failed for '%s'", hash_name);
rv = hash_memory(hash_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;
}
if (strnEQ(padding, "pss", 3)) {
hash_id = cryptx_internal_find_hash(hash_name);
if (hash_id == -1) croak("FATAL: find_hash failed for '%s'", hash_name);
mgf_hash_id = mgf_hash_name ? cryptx_internal_find_hash(mgf_hash_name) : hash_id;
if (mgf_hash_id == -1) croak("FATAL: find_hash failed for '%s'", mgf_hash_name);
rsa_oparams.prng = &self->pstate;
rsa_oparams.wprng = self->pindex;
rsa_oparams.padding = LTC_PKCS_1_PSS;
rsa_oparams.u.crypt.lparam = NULL;
rsa_oparams.u.crypt.lparamlen = 0;
rsa_oparams.params.hash_idx = hash_id;
rsa_oparams.params.mgf1_hash_idx = mgf_hash_id;
rsa_oparams.params.saltlen = saltlen;
rv = rsa_sign_hash_v2(data_ptr, (unsigned long)data_len, buffer, &buffer_len, &rsa_oparams, &self->key);
if (rv != CRYPT_OK) croak("FATAL: rsa_sign_hash_v2 failed: %s", error_to_string(rv));
RETVAL = newSVpvn((char*)buffer, buffer_len);
}
else if (strnEQ(padding, "v1.5", 4)) {
hash_id = cryptx_internal_find_hash(hash_name);
if (hash_id == -1) croak("FATAL: find_hash failed for '%s'", hash_name);
rsa_oparams.prng = &self->pstate;
rsa_oparams.wprng = self->pindex;
rsa_oparams.padding = LTC_PKCS_1_V1_5;
rsa_oparams.u.crypt.lparam = NULL;
rsa_oparams.u.crypt.lparamlen = 0;
rsa_oparams.params.hash_idx = hash_id;
rsa_oparams.params.mgf1_hash_idx = -1;
rsa_oparams.params.saltlen = 0;
rv = rsa_sign_hash_v2(data_ptr, (unsigned long)data_len, buffer, &buffer_len, &rsa_oparams, &self->key);
if (rv != CRYPT_OK) croak("FATAL: rsa_sign_hash_v2 failed: %s", error_to_string(rv));
RETVAL = newSVpvn((char*)buffer, buffer_len);
}
else if (strnEQ(padding, "v1.5.na1", 8)) {
croak("FATAL: LTC_PKCS_1_V1_5_NA1 not implemented");
}
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_hash(Crypt::PK::RSA self, SV * sig, SV * data, const char * hash_name = "SHA1", const char * padding = "pss", unsigned long saltlen = 12, const char * mgf_hash_name = NULL)
ALIAS:
verify_message = 1
CODE:
{
int rv, hash_id, mgf_hash_id, stat;
unsigned char tmp[MAXBLOCKSIZE], buffer[1024], *data_ptr = NULL, *sig_ptr = NULL;
unsigned long i, tmp_len = MAXBLOCKSIZE, buffer_len = 1024;
STRLEN data_len = 0, sig_len = 0;
ltc_rsa_op_parameters rsa_oparams;
data_ptr = (unsigned char *)SvPVbyte(data, data_len);
sig_ptr = (unsigned char *)SvPVbyte(sig, sig_len);
cryptx_internal_pk_prng_reseed(&self->pstate, self->pindex, &self->last_pid);
if (ix == 1) {
hash_id = cryptx_internal_find_hash(hash_name);
if (hash_id == -1) croak("FATAL: find_hash failed for '%s'", hash_name);
rv = hash_memory(hash_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;
if (strnEQ(padding, "pss", 3)) {
hash_id = cryptx_internal_find_hash(hash_name);
if (hash_id == -1) croak("FATAL: find_hash failed for '%s'", hash_name);
mgf_hash_id = mgf_hash_name ? cryptx_internal_find_hash(mgf_hash_name) : hash_id;
if (mgf_hash_id == -1) croak("FATAL: find_hash failed for '%s'", mgf_hash_name);
rsa_oparams.prng = &self->pstate;
rsa_oparams.wprng = self->pindex;
rsa_oparams.padding = LTC_PKCS_1_PSS;
rsa_oparams.u.crypt.lparam = NULL;
rsa_oparams.u.crypt.lparamlen = 0;
rsa_oparams.params.hash_idx = hash_id;
rsa_oparams.params.mgf1_hash_idx = mgf_hash_id;
rsa_oparams.params.saltlen = saltlen;
rv = rsa_verify_hash_v2(sig_ptr, (unsigned long)sig_len, data_ptr, (unsigned long)data_len, &rsa_oparams, &stat, &self->key);
if (rv != CRYPT_OK || stat != 1) RETVAL = 0;
}
else if (strnEQ(padding, "v1.5", 4)) {
hash_id = cryptx_internal_find_hash(hash_name);
if (hash_id == -1) croak("FATAL: find_hash failed for '%s'", hash_name);
rsa_oparams.prng = &self->pstate;
rsa_oparams.wprng = self->pindex;
rsa_oparams.padding = LTC_PKCS_1_V1_5;
rsa_oparams.u.crypt.lparam = NULL;
rsa_oparams.u.crypt.lparamlen = 0;
rsa_oparams.params.hash_idx = hash_id;
rsa_oparams.params.mgf1_hash_idx = -1;
rsa_oparams.params.saltlen = 0;
rv = rsa_verify_hash_v2(sig_ptr, (unsigned long)sig_len, data_ptr, (unsigned long)data_len, &rsa_oparams, &stat, &self->key);
if (rv != CRYPT_OK || stat != 1) RETVAL = 0;
}
else if (strnEQ(padding, "v1.5.na1", 8)) {
croak("FATAL: LTC_PKCS_1_V1_5_NA1 not implemented");
}
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);