* and PRIVATEKEYBLOB).
*/
-#include "cryptlib.h"
+#include "internal/cryptlib.h"
#include <openssl/pem.h>
#include <openssl/rand.h>
#include <openssl/bn.h>
static int read_lebn(const unsigned char **in, unsigned int nbyte, BIGNUM **r)
{
- const unsigned char *p;
- unsigned char *tmpbuf, *q;
- unsigned int i;
- p = *in + nbyte - 1;
- tmpbuf = OPENSSL_malloc(nbyte);
- if (!tmpbuf)
- return 0;
- q = tmpbuf;
- for (i = 0; i < nbyte; i++)
- *q++ = *p--;
- *r = BN_bin2bn(tmpbuf, nbyte, NULL);
- OPENSSL_free(tmpbuf);
- if (*r) {
- *in += nbyte;
- return 1;
- } else
+ *r = BN_lebin2bn(*in, nbyte, NULL);
+ if (*r == NULL)
return 0;
+ *in += nbyte;
+ return 1;
}
/* Convert private key blob to EVP_PKEY: RSA and DSA keys supported */
# define MS_PVKMAGIC 0xb0b5f11eL
/* Salt length for PVK files */
# define PVK_SALTLEN 0x10
+/* Maximum length in PVK header */
+# define PVK_MAX_KEYLEN 102400
+/* Maximum salt length */
+# define PVK_MAX_SALTLEN 10240
-static EVP_PKEY *b2i_rsa(const unsigned char **in, unsigned int length,
+static EVP_PKEY *b2i_rsa(const unsigned char **in,
unsigned int bitlen, int ispub);
-static EVP_PKEY *b2i_dss(const unsigned char **in, unsigned int length,
+static EVP_PKEY *b2i_dss(const unsigned char **in,
unsigned int bitlen, int ispub);
static int do_blob_header(const unsigned char **in, unsigned int length,
return NULL;
}
if (isdss)
- return b2i_dss(&p, length, bitlen, ispub);
+ return b2i_dss(&p, bitlen, ispub);
else
- return b2i_rsa(&p, length, bitlen, ispub);
+ return b2i_rsa(&p, bitlen, ispub);
}
static EVP_PKEY *do_b2i_bio(BIO *in, int ispub)
length = blob_length(bitlen, isdss, ispub);
buf = OPENSSL_malloc(length);
- if (!buf) {
+ if (buf == NULL) {
PEMerr(PEM_F_DO_B2I_BIO, ERR_R_MALLOC_FAILURE);
goto err;
}
}
if (isdss)
- ret = b2i_dss(&p, length, bitlen, ispub);
+ ret = b2i_dss(&p, bitlen, ispub);
else
- ret = b2i_rsa(&p, length, bitlen, ispub);
+ ret = b2i_rsa(&p, bitlen, ispub);
err:
OPENSSL_free(buf);
return ret;
}
-static EVP_PKEY *b2i_dss(const unsigned char **in, unsigned int length,
+static EVP_PKEY *b2i_dss(const unsigned char **in,
unsigned int bitlen, int ispub)
{
const unsigned char *p = *in;
DSA *dsa = NULL;
BN_CTX *ctx = NULL;
unsigned int nbyte;
+ BIGNUM *pbn = NULL, *qbn = NULL, *gbn = NULL, *priv_key = NULL;
+ BIGNUM *pub_key = NULL;
+
nbyte = (bitlen + 7) >> 3;
dsa = DSA_new();
ret = EVP_PKEY_new();
- if (!dsa || !ret)
+ if (dsa == NULL || ret == NULL)
goto memerr;
- if (!read_lebn(&p, nbyte, &dsa->p))
+ if (!read_lebn(&p, nbyte, &pbn))
goto memerr;
- if (!read_lebn(&p, 20, &dsa->q))
+
+ if (!read_lebn(&p, 20, &qbn))
goto memerr;
- if (!read_lebn(&p, nbyte, &dsa->g))
+
+ if (!read_lebn(&p, nbyte, &gbn))
goto memerr;
+
if (ispub) {
- if (!read_lebn(&p, nbyte, &dsa->pub_key))
+ if (!read_lebn(&p, nbyte, &pub_key))
goto memerr;
} else {
- if (!read_lebn(&p, 20, &dsa->priv_key))
+ if (!read_lebn(&p, 20, &priv_key))
goto memerr;
+
/* Calculate public key */
- if (!(dsa->pub_key = BN_new()))
+ pub_key = BN_new();
+ if (pub_key == NULL)
goto memerr;
- if (!(ctx = BN_CTX_new()))
+ if ((ctx = BN_CTX_new()) == NULL)
goto memerr;
- if (!BN_mod_exp(dsa->pub_key, dsa->g, dsa->priv_key, dsa->p, ctx))
-
+ if (!BN_mod_exp(pub_key, gbn, priv_key, pbn, ctx))
goto memerr;
+
BN_CTX_free(ctx);
}
+ if (!DSA_set0_pqg(dsa, pbn, qbn, gbn))
+ goto memerr;
+ pbn = qbn = gbn = NULL;
+ if (!DSA_set0_key(dsa, pub_key, priv_key))
+ goto memerr;
EVP_PKEY_set1_DSA(ret, dsa);
DSA_free(dsa);
memerr:
PEMerr(PEM_F_B2I_DSS, ERR_R_MALLOC_FAILURE);
DSA_free(dsa);
+ BN_free(pbn);
+ BN_free(qbn);
+ BN_free(gbn);
+ BN_free(pub_key);
+ BN_free(priv_key);
EVP_PKEY_free(ret);
BN_CTX_free(ctx);
return NULL;
}
-static EVP_PKEY *b2i_rsa(const unsigned char **in, unsigned int length,
+static EVP_PKEY *b2i_rsa(const unsigned char **in,
unsigned int bitlen, int ispub)
{
- const unsigned char *p = *in;
+ const unsigned char *pin = *in;
EVP_PKEY *ret = NULL;
+ BIGNUM *e = NULL, *n = NULL, *d = NULL;
+ BIGNUM *p = NULL, *q = NULL, *dmp1 = NULL, *dmq1 = NULL, *iqmp = NULL;
RSA *rsa = NULL;
unsigned int nbyte, hnbyte;
nbyte = (bitlen + 7) >> 3;
hnbyte = (bitlen + 15) >> 4;
rsa = RSA_new();
ret = EVP_PKEY_new();
- if (!rsa || !ret)
+ if (rsa == NULL || ret == NULL)
goto memerr;
- rsa->e = BN_new();
- if (!rsa->e)
+ e = BN_new();
+ if (e == NULL)
goto memerr;
- if (!BN_set_word(rsa->e, read_ledword(&p)))
+ if (!BN_set_word(e, read_ledword(&pin)))
goto memerr;
- if (!read_lebn(&p, nbyte, &rsa->n))
+ if (!read_lebn(&pin, nbyte, &n))
goto memerr;
if (!ispub) {
- if (!read_lebn(&p, hnbyte, &rsa->p))
+ if (!read_lebn(&pin, hnbyte, &p))
goto memerr;
- if (!read_lebn(&p, hnbyte, &rsa->q))
+ if (!read_lebn(&pin, hnbyte, &q))
goto memerr;
- if (!read_lebn(&p, hnbyte, &rsa->dmp1))
+ if (!read_lebn(&pin, hnbyte, &dmp1))
goto memerr;
- if (!read_lebn(&p, hnbyte, &rsa->dmq1))
+ if (!read_lebn(&pin, hnbyte, &dmq1))
goto memerr;
- if (!read_lebn(&p, hnbyte, &rsa->iqmp))
+ if (!read_lebn(&pin, hnbyte, &iqmp))
goto memerr;
- if (!read_lebn(&p, nbyte, &rsa->d))
+ if (!read_lebn(&pin, nbyte, &d))
goto memerr;
+ RSA_set0_factors(rsa, p, q);
+ RSA_set0_crt_params(rsa, dmp1, dmq1, iqmp);
}
+ RSA_set0_key(rsa, e, n, d);
EVP_PKEY_set1_RSA(ret, rsa);
RSA_free(rsa);
- *in = p;
+ *in = pin;
return ret;
memerr:
PEMerr(PEM_F_B2I_RSA, ERR_R_MALLOC_FAILURE);
+ BN_free(e);
+ BN_free(n);
+ BN_free(p);
+ BN_free(q);
+ BN_free(dmp1);
+ BN_free(dmq1);
+ BN_free(iqmp);
+ BN_free(d);
RSA_free(rsa);
EVP_PKEY_free(ret);
return NULL;
static void write_lebn(unsigned char **out, const BIGNUM *bn, int len)
{
- int nb, i;
- unsigned char *p = *out, *q, c;
- nb = BN_num_bytes(bn);
- BN_bn2bin(bn, p);
- q = p + nb - 1;
- /* In place byte order reversal */
- for (i = 0; i < nb / 2; i++) {
- c = *p;
- *p++ = *q;
- *q-- = c;
- }
- *out += nb;
- /* Pad with zeroes if we have to */
- if (len > 0) {
- len -= nb;
- if (len > 0) {
- memset(*out, 0, len);
- *out += len;
- }
- }
+ BN_bn2lebinpad(bn, *out, len);
+ *out += len;
}
static int check_bitlen_rsa(RSA *rsa, int ispub, unsigned int *magic);
unsigned char *p;
unsigned int bitlen, magic = 0, keyalg;
int outlen, noinc = 0;
- if (pk->type == EVP_PKEY_DSA) {
- bitlen = check_bitlen_dsa(pk->pkey.dsa, ispub, &magic);
+ int pktype = EVP_PKEY_id(pk);
+ if (pktype == EVP_PKEY_DSA) {
+ bitlen = check_bitlen_dsa(EVP_PKEY_get0_DSA(pk), ispub, &magic);
keyalg = MS_KEYALG_DSS_SIGN;
- } else if (pk->type == EVP_PKEY_RSA) {
- bitlen = check_bitlen_rsa(pk->pkey.rsa, ispub, &magic);
+ } else if (pktype == EVP_PKEY_RSA) {
+ bitlen = check_bitlen_rsa(EVP_PKEY_get0_RSA(pk), ispub, &magic);
keyalg = MS_KEYALG_RSA_KEYX;
} else
return -1;
p = *out;
else {
p = OPENSSL_malloc(outlen);
- if (!p)
+ if (p == NULL)
return -1;
*out = p;
noinc = 1;
write_ledword(&p, magic);
write_ledword(&p, bitlen);
if (keyalg == MS_KEYALG_DSS_SIGN)
- write_dsa(&p, pk->pkey.dsa, ispub);
+ write_dsa(&p, EVP_PKEY_get0_DSA(pk), ispub);
else
- write_rsa(&p, pk->pkey.rsa, ispub);
+ write_rsa(&p, EVP_PKEY_get0_RSA(pk), ispub);
if (!noinc)
*out += outlen;
return outlen;
static int check_bitlen_dsa(DSA *dsa, int ispub, unsigned int *pmagic)
{
int bitlen;
- bitlen = BN_num_bits(dsa->p);
- if ((bitlen & 7) || (BN_num_bits(dsa->q) != 160)
- || (BN_num_bits(dsa->g) > bitlen))
+ BIGNUM *p = NULL, *q = NULL, *g = NULL, *pub_key = NULL, *priv_key = NULL;
+
+ DSA_get0_pqg(dsa, &p, &q, &g);
+ DSA_get0_key(dsa, &pub_key, &priv_key);
+ bitlen = BN_num_bits(p);
+ if ((bitlen & 7) || (BN_num_bits(q) != 160)
+ || (BN_num_bits(g) > bitlen))
goto badkey;
if (ispub) {
- if (BN_num_bits(dsa->pub_key) > bitlen)
+ if (BN_num_bits(pub_key) > bitlen)
goto badkey;
*pmagic = MS_DSS1MAGIC;
} else {
- if (BN_num_bits(dsa->priv_key) > 160)
+ if (BN_num_bits(priv_key) > 160)
goto badkey;
*pmagic = MS_DSS2MAGIC;
}
static int check_bitlen_rsa(RSA *rsa, int ispub, unsigned int *pmagic)
{
int nbyte, hnbyte, bitlen;
- if (BN_num_bits(rsa->e) > 32)
+ BIGNUM *e;
+
+ RSA_get0_key(rsa, &e, NULL, NULL);
+ if (BN_num_bits(e) > 32)
goto badkey;
- bitlen = BN_num_bits(rsa->n);
- nbyte = BN_num_bytes(rsa->n);
- hnbyte = (BN_num_bits(rsa->n) + 15) >> 4;
+ bitlen = RSA_bits(rsa);
+ nbyte = RSA_size(rsa);
+ hnbyte = (bitlen + 15) >> 4;
if (ispub) {
*pmagic = MS_RSA1MAGIC;
return bitlen;
} else {
+ BIGNUM *d, *p, *q, *iqmp, *dmp1, *dmq1;
+
*pmagic = MS_RSA2MAGIC;
+
/*
* For private key each component must fit within nbyte or hnbyte.
*/
- if (BN_num_bytes(rsa->d) > nbyte)
+ RSA_get0_key(rsa, NULL, NULL, &d);
+ if (BN_num_bytes(d) > nbyte)
goto badkey;
- if ((BN_num_bytes(rsa->iqmp) > hnbyte)
- || (BN_num_bytes(rsa->p) > hnbyte)
- || (BN_num_bytes(rsa->q) > hnbyte)
- || (BN_num_bytes(rsa->dmp1) > hnbyte)
- || (BN_num_bytes(rsa->dmq1) > hnbyte))
+ RSA_get0_factors(rsa, &p, &q);
+ RSA_get0_crt_params(rsa, &dmp1, &dmq1, &iqmp);
+ if ((BN_num_bytes(iqmp) > hnbyte)
+ || (BN_num_bytes(p) > hnbyte)
+ || (BN_num_bytes(q) > hnbyte)
+ || (BN_num_bytes(dmp1) > hnbyte)
+ || (BN_num_bytes(dmq1) > hnbyte))
goto badkey;
}
return bitlen;
static void write_rsa(unsigned char **out, RSA *rsa, int ispub)
{
int nbyte, hnbyte;
- nbyte = BN_num_bytes(rsa->n);
- hnbyte = (BN_num_bits(rsa->n) + 15) >> 4;
- write_lebn(out, rsa->e, 4);
- write_lebn(out, rsa->n, -1);
+ BIGNUM *n, *d, *e, *p, *q, *iqmp, *dmp1, *dmq1;
+
+ nbyte = RSA_size(rsa);
+ hnbyte = (RSA_bits(rsa) + 15) >> 4;
+ RSA_get0_key(rsa, &e, &n, &d);
+ write_lebn(out, e, 4);
+ write_lebn(out, n, -1);
if (ispub)
return;
- write_lebn(out, rsa->p, hnbyte);
- write_lebn(out, rsa->q, hnbyte);
- write_lebn(out, rsa->dmp1, hnbyte);
- write_lebn(out, rsa->dmq1, hnbyte);
- write_lebn(out, rsa->iqmp, hnbyte);
- write_lebn(out, rsa->d, nbyte);
+ RSA_get0_factors(rsa, &p, &q);
+ RSA_get0_crt_params(rsa, &dmp1, &dmq1, &iqmp);
+ write_lebn(out, p, hnbyte);
+ write_lebn(out, q, hnbyte);
+ write_lebn(out, dmp1, hnbyte);
+ write_lebn(out, dmq1, hnbyte);
+ write_lebn(out, iqmp, hnbyte);
+ write_lebn(out, d, nbyte);
}
static void write_dsa(unsigned char **out, DSA *dsa, int ispub)
{
int nbyte;
- nbyte = BN_num_bytes(dsa->p);
- write_lebn(out, dsa->p, nbyte);
- write_lebn(out, dsa->q, 20);
- write_lebn(out, dsa->g, nbyte);
+ BIGNUM *p = NULL, *q = NULL, *g = NULL, *pub_key = NULL, *priv_key = NULL;
+
+ DSA_get0_pqg(dsa, &p, &q, &g);
+ DSA_get0_key(dsa, &pub_key, &priv_key);
+ nbyte = BN_num_bytes(p);
+ write_lebn(out, p, nbyte);
+ write_lebn(out, q, 20);
+ write_lebn(out, g, nbyte);
if (ispub)
- write_lebn(out, dsa->pub_key, nbyte);
+ write_lebn(out, pub_key, nbyte);
else
- write_lebn(out, dsa->priv_key, 20);
+ write_lebn(out, priv_key, 20);
/* Set "invalid" for seed structure values */
memset(*out, 0xff, 24);
*out += 24;
PEMerr(PEM_F_DO_PVK_HEADER, PEM_R_PVK_TOO_SHORT);
return 0;
}
- length -= 20;
} else {
if (length < 24) {
PEMerr(PEM_F_DO_PVK_HEADER, PEM_R_PVK_TOO_SHORT);
return 0;
}
- length -= 24;
pvk_magic = read_ledword(&p);
if (pvk_magic != MS_PVKMAGIC) {
PEMerr(PEM_F_DO_PVK_HEADER, PEM_R_BAD_MAGIC_NUMBER);
*psaltlen = read_ledword(&p);
*pkeylen = read_ledword(&p);
+ if (*pkeylen > PVK_MAX_KEYLEN || *psaltlen > PVK_MAX_SALTLEN)
+ return 0;
+
if (is_encrypted && !*psaltlen) {
PEMerr(PEM_F_DO_PVK_HEADER, PEM_R_INCONSISTENT_HEADER);
return 0;
const unsigned char *salt, unsigned int saltlen,
const unsigned char *pass, int passlen)
{
- EVP_MD_CTX mctx;
+ EVP_MD_CTX *mctx = EVP_MD_CTX_new();
int rv = 1;
- EVP_MD_CTX_init(&mctx);
- if (!EVP_DigestInit_ex(&mctx, EVP_sha1(), NULL)
- || !EVP_DigestUpdate(&mctx, salt, saltlen)
- || !EVP_DigestUpdate(&mctx, pass, passlen)
- || !EVP_DigestFinal_ex(&mctx, key, NULL))
+ if (mctx == NULL
+ || !EVP_DigestInit_ex(mctx, EVP_sha1(), NULL)
+ || !EVP_DigestUpdate(mctx, salt, saltlen)
+ || !EVP_DigestUpdate(mctx, pass, passlen)
+ || !EVP_DigestFinal_ex(mctx, key, NULL))
rv = 0;
- EVP_MD_CTX_cleanup(&mctx);
+ EVP_MD_CTX_free(mctx);
return rv;
}
unsigned int magic;
unsigned char *enctmp = NULL, *q;
- EVP_CIPHER_CTX cctx;
- EVP_CIPHER_CTX_init(&cctx);
+ EVP_CIPHER_CTX *cctx = EVP_CIPHER_CTX_new();
if (saltlen) {
char psbuf[PEM_BUFSIZE];
unsigned char keybuf[20];
inlen = PEM_def_callback(psbuf, PEM_BUFSIZE, 0, u);
if (inlen <= 0) {
PEMerr(PEM_F_DO_PVK_BODY, PEM_R_BAD_PASSWORD_READ);
- return NULL;
+ goto err;
}
enctmp = OPENSSL_malloc(keylen + 8);
- if (!enctmp) {
+ if (enctmp == NULL) {
PEMerr(PEM_F_DO_PVK_BODY, ERR_R_MALLOC_FAILURE);
- return NULL;
+ goto err;
}
if (!derive_pvk_key(keybuf, p, saltlen,
(unsigned char *)psbuf, inlen))
- return NULL;
+ goto err;
p += saltlen;
/* Copy BLOBHEADER across, decrypt rest */
memcpy(enctmp, p, 8);
p += 8;
if (keylen < 8) {
PEMerr(PEM_F_DO_PVK_BODY, PEM_R_PVK_TOO_SHORT);
- return NULL;
+ goto err;
}
inlen = keylen - 8;
q = enctmp + 8;
- if (!EVP_DecryptInit_ex(&cctx, EVP_rc4(), NULL, keybuf, NULL))
+ if (!EVP_DecryptInit_ex(cctx, EVP_rc4(), NULL, keybuf, NULL))
goto err;
- if (!EVP_DecryptUpdate(&cctx, q, &enctmplen, p, inlen))
+ if (!EVP_DecryptUpdate(cctx, q, &enctmplen, p, inlen))
goto err;
- if (!EVP_DecryptFinal_ex(&cctx, q + enctmplen, &enctmplen))
+ if (!EVP_DecryptFinal_ex(cctx, q + enctmplen, &enctmplen))
goto err;
magic = read_ledword((const unsigned char **)&q);
if (magic != MS_RSA2MAGIC && magic != MS_DSS2MAGIC) {
q = enctmp + 8;
memset(keybuf + 5, 0, 11);
- if (!EVP_DecryptInit_ex(&cctx, EVP_rc4(), NULL, keybuf, NULL))
+ if (!EVP_DecryptInit_ex(cctx, EVP_rc4(), NULL, keybuf, NULL))
goto err;
OPENSSL_cleanse(keybuf, 20);
- if (!EVP_DecryptUpdate(&cctx, q, &enctmplen, p, inlen))
+ if (!EVP_DecryptUpdate(cctx, q, &enctmplen, p, inlen))
goto err;
- if (!EVP_DecryptFinal_ex(&cctx, q + enctmplen, &enctmplen))
+ if (!EVP_DecryptFinal_ex(cctx, q + enctmplen, &enctmplen))
goto err;
magic = read_ledword((const unsigned char **)&q);
if (magic != MS_RSA2MAGIC && magic != MS_DSS2MAGIC) {
ret = b2i_PrivateKey(&p, keylen);
err:
- EVP_CIPHER_CTX_cleanup(&cctx);
+ EVP_CIPHER_CTX_free(cctx);
OPENSSL_free(enctmp);
return ret;
}
return 0;
buflen = (int)keylen + saltlen;
buf = OPENSSL_malloc(buflen);
- if (!buf) {
+ if (buf == NULL) {
PEMerr(PEM_F_B2I_PVK_BIO, ERR_R_MALLOC_FAILURE);
return 0;
}
{
int outlen = 24, pklen;
unsigned char *p, *salt = NULL;
- EVP_CIPHER_CTX cctx;
- EVP_CIPHER_CTX_init(&cctx);
+ EVP_CIPHER_CTX *cctx = NULL;
if (enclevel)
outlen += PVK_SALTLEN;
pklen = do_i2b(NULL, pk, 0);
if (pklen < 0)
return -1;
outlen += pklen;
- if (!out)
+ if (out == NULL)
return outlen;
- if (*out)
+ if (*out != NULL) {
p = *out;
- else {
+ } else {
p = OPENSSL_malloc(outlen);
- if (!p) {
+ if (p == NULL) {
PEMerr(PEM_F_I2B_PVK, ERR_R_MALLOC_FAILURE);
return -1;
}
- *out = p;
}
+ cctx = EVP_CIPHER_CTX_new();
+ if (cctx == NULL)
+ return -1;
+
write_ledword(&p, MS_PVKMAGIC);
write_ledword(&p, 0);
- if (pk->type == EVP_PKEY_DSA)
+ if (EVP_PKEY_id(pk) == EVP_PKEY_DSA)
write_ledword(&p, MS_KEYTYPE_SIGN);
else
write_ledword(&p, MS_KEYTYPE_KEYX);
p += PVK_SALTLEN;
}
do_i2b(&p, pk, 0);
- if (enclevel == 0)
- return outlen;
- else {
+ if (enclevel != 0) {
char psbuf[PEM_BUFSIZE];
unsigned char keybuf[20];
int enctmplen, inlen;
if (enclevel == 1)
memset(keybuf + 5, 0, 11);
p = salt + PVK_SALTLEN + 8;
- if (!EVP_EncryptInit_ex(&cctx, EVP_rc4(), NULL, keybuf, NULL))
+ if (!EVP_EncryptInit_ex(cctx, EVP_rc4(), NULL, keybuf, NULL))
goto error;
OPENSSL_cleanse(keybuf, 20);
- if (!EVP_DecryptUpdate(&cctx, p, &enctmplen, p, pklen - 8))
+ if (!EVP_DecryptUpdate(cctx, p, &enctmplen, p, pklen - 8))
goto error;
- if (!EVP_DecryptFinal_ex(&cctx, p + enctmplen, &enctmplen))
+ if (!EVP_DecryptFinal_ex(cctx, p + enctmplen, &enctmplen))
goto error;
}
- EVP_CIPHER_CTX_cleanup(&cctx);
+
+ EVP_CIPHER_CTX_free(cctx);
+
+ if (*out == NULL)
+ *out = p;
+
return outlen;
error:
- EVP_CIPHER_CTX_cleanup(&cctx);
+ EVP_CIPHER_CTX_free(cctx);
return -1;
}