-/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
- * project 2005.
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 2005.
*/
/* ====================================================================
* Copyright (c) 2005 The OpenSSL Project. All rights reserved.
* are met:
*
* 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
+ * notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
*
*/
-/* Support for PVK format keys and related structures (such a PUBLICKEYBLOB
+/*
+ * Support for PVK format keys and related structures (such a PUBLICKEYBLOB
* and PRIVATEKEYBLOB).
*/
-#include "cryptlib.h"
+#include "internal/cryptlib.h"
#include <openssl/pem.h>
#include <openssl/rand.h>
+#include <openssl/bn.h>
+#if !defined(OPENSSL_NO_RSA) && !defined(OPENSSL_NO_DSA)
+# include <openssl/dsa.h>
+# include <openssl/rsa.h>
-/* Utility function: read a DWORD (4 byte unsigned integer) in little endian
+/*
+ * Utility function: read a DWORD (4 byte unsigned integer) in little endian
* format
*/
static unsigned int read_ledword(const unsigned char **in)
- {
- const unsigned char *p = *in;
- unsigned int ret;
- ret = *p++;
- ret |= (*p++ << 8);
- ret |= (*p++ << 16);
- ret |= (*p++ << 24);
- *in = p;
- return ret;
- }
-
-/* Read a BIGNUM in little endian format. The docs say that this should take up
- * bitlen/8 bytes.
+{
+ const unsigned char *p = *in;
+ unsigned int ret;
+ ret = *p++;
+ ret |= (*p++ << 8);
+ ret |= (*p++ << 16);
+ ret |= (*p++ << 24);
+ *in = p;
+ return ret;
+}
+
+/*
+ * Read a BIGNUM in little endian format. The docs say that this should take
+ * up bitlen/8 bytes.
*/
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
- return 0;
- }
-
+{
+ const unsigned char *p;
+ unsigned char *tmpbuf, *q;
+ unsigned int i;
+ p = *in + nbyte - 1;
+ tmpbuf = OPENSSL_malloc(nbyte);
+ if (tmpbuf == NULL)
+ 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
+ return 0;
+}
/* Convert private key blob to EVP_PKEY: RSA and DSA keys supported */
-#define MS_PUBLICKEYBLOB 0x6
-#define MS_PRIVATEKEYBLOB 0x7
-#define MS_RSA1MAGIC 0x31415352L
-#define MS_RSA2MAGIC 0x32415352L
-#define MS_DSS1MAGIC 0x31535344L
-#define MS_DSS2MAGIC 0x32535344L
+# define MS_PUBLICKEYBLOB 0x6
+# define MS_PRIVATEKEYBLOB 0x7
+# define MS_RSA1MAGIC 0x31415352L
+# define MS_RSA2MAGIC 0x32415352L
+# define MS_DSS1MAGIC 0x31535344L
+# define MS_DSS2MAGIC 0x32535344L
-#define MS_KEYALG_RSA_KEYX 0xa400
-#define MS_KEYALG_DSS_SIGN 0x2200
+# define MS_KEYALG_RSA_KEYX 0xa400
+# define MS_KEYALG_DSS_SIGN 0x2200
-#define MS_KEYTYPE_KEYX 0x1
-#define MS_KEYTYPE_SIGN 0x2
+# define MS_KEYTYPE_KEYX 0x1
+# define MS_KEYTYPE_SIGN 0x2
/* The PVK file magic number: seems to spell out "bobsfile", who is Bob? */
-#define MS_PVKMAGIC 0xb0b5f11eL
+# define MS_PVKMAGIC 0xb0b5f11eL
/* Salt length for PVK files */
-#define PVK_SALTLEN 0x10
+# define PVK_SALTLEN 0x10
static EVP_PKEY *b2i_rsa(const unsigned char **in, unsigned int length,
- unsigned int bitlen, int ispub);
+ unsigned int bitlen, int ispub);
static EVP_PKEY *b2i_dss(const unsigned char **in, unsigned int length,
- unsigned int bitlen, int ispub);
+ unsigned int bitlen, int ispub);
static int do_blob_header(const unsigned char **in, unsigned int length,
- unsigned int *pmagic, unsigned int *pbitlen,
- int *pisdss, int *pispub)
- {
- const unsigned char *p = *in;
- if (length < 16)
- return 0;
- /* bType */
- if (*p == MS_PUBLICKEYBLOB)
- {
- if (*pispub == 0)
- {
- PEMerr(PEM_F_DO_BLOB_HEADER,
- PEM_R_EXPECTING_PRIVATE_KEY_BLOB);
- return 0;
- }
- *pispub = 1;
- }
- else if (*p == MS_PRIVATEKEYBLOB)
- {
- if (*pispub == 1)
- {
- PEMerr(PEM_F_DO_BLOB_HEADER,
- PEM_R_EXPECTING_PUBLIC_KEY_BLOB);
- return 0;
- }
- *pispub = 0;
- }
- else
- return 0;
- p++;
- /* Version */
- if (*p++ != 0x2)
- {
- PEMerr(PEM_F_DO_BLOB_HEADER, PEM_R_BAD_VERSION_NUMBER);
- return 0;
- }
- /* Ignore reserved, aiKeyAlg */
- p+= 6;
- *pmagic = read_ledword(&p);
- *pbitlen = read_ledword(&p);
- *pisdss = 0;
- switch (*pmagic)
- {
-
- case MS_DSS1MAGIC:
- *pisdss = 1;
- case MS_RSA1MAGIC:
- if (*pispub == 0)
- {
- PEMerr(PEM_F_DO_BLOB_HEADER,
- PEM_R_EXPECTING_PRIVATE_KEY_BLOB);
- return 0;
- }
- break;
-
- case MS_DSS2MAGIC:
- *pisdss = 1;
- case MS_RSA2MAGIC:
- if (*pispub == 1)
- {
- PEMerr(PEM_F_DO_BLOB_HEADER,
- PEM_R_EXPECTING_PUBLIC_KEY_BLOB);
- return 0;
- }
- break;
-
- default:
- PEMerr(PEM_F_DO_BLOB_HEADER, PEM_R_BAD_MAGIC_NUMBER);
- return -1;
- }
- *in = p;
- return 1;
- }
+ unsigned int *pmagic, unsigned int *pbitlen,
+ int *pisdss, int *pispub)
+{
+ const unsigned char *p = *in;
+ if (length < 16)
+ return 0;
+ /* bType */
+ if (*p == MS_PUBLICKEYBLOB) {
+ if (*pispub == 0) {
+ PEMerr(PEM_F_DO_BLOB_HEADER, PEM_R_EXPECTING_PRIVATE_KEY_BLOB);
+ return 0;
+ }
+ *pispub = 1;
+ } else if (*p == MS_PRIVATEKEYBLOB) {
+ if (*pispub == 1) {
+ PEMerr(PEM_F_DO_BLOB_HEADER, PEM_R_EXPECTING_PUBLIC_KEY_BLOB);
+ return 0;
+ }
+ *pispub = 0;
+ } else
+ return 0;
+ p++;
+ /* Version */
+ if (*p++ != 0x2) {
+ PEMerr(PEM_F_DO_BLOB_HEADER, PEM_R_BAD_VERSION_NUMBER);
+ return 0;
+ }
+ /* Ignore reserved, aiKeyAlg */
+ p += 6;
+ *pmagic = read_ledword(&p);
+ *pbitlen = read_ledword(&p);
+ *pisdss = 0;
+ switch (*pmagic) {
+
+ case MS_DSS1MAGIC:
+ *pisdss = 1;
+ case MS_RSA1MAGIC:
+ if (*pispub == 0) {
+ PEMerr(PEM_F_DO_BLOB_HEADER, PEM_R_EXPECTING_PRIVATE_KEY_BLOB);
+ return 0;
+ }
+ break;
+
+ case MS_DSS2MAGIC:
+ *pisdss = 1;
+ case MS_RSA2MAGIC:
+ if (*pispub == 1) {
+ PEMerr(PEM_F_DO_BLOB_HEADER, PEM_R_EXPECTING_PUBLIC_KEY_BLOB);
+ return 0;
+ }
+ break;
+
+ default:
+ PEMerr(PEM_F_DO_BLOB_HEADER, PEM_R_BAD_MAGIC_NUMBER);
+ return -1;
+ }
+ *in = p;
+ return 1;
+}
static unsigned int blob_length(unsigned bitlen, int isdss, int ispub)
- {
- unsigned int nbyte, hnbyte;
- nbyte = (bitlen + 7) >> 3;
- hnbyte = (bitlen + 15) >> 4;
- if (isdss)
- {
-
- /* Expected length: 20 for q + 3 components bitlen each + 24
- * for seed structure.
- */
- if (ispub)
- return 44 + 3 * nbyte;
- /* Expected length: 20 for q, priv, 2 bitlen components + 24
- * for seed structure.
- */
- else
- return 64 + 2 * nbyte;
- }
- else
- {
- /* Expected length: 4 for 'e' + 'n' */
- if (ispub)
- return 4 + nbyte;
- else
- /* Expected length: 4 for 'e' and 7 other components.
- * 2 components are bitlen size, 5 are bitlen/2
- */
- return 4 + 2*nbyte + 5*hnbyte;
- }
-
- }
+{
+ unsigned int nbyte, hnbyte;
+ nbyte = (bitlen + 7) >> 3;
+ hnbyte = (bitlen + 15) >> 4;
+ if (isdss) {
+
+ /*
+ * Expected length: 20 for q + 3 components bitlen each + 24 for seed
+ * structure.
+ */
+ if (ispub)
+ return 44 + 3 * nbyte;
+ /*
+ * Expected length: 20 for q, priv, 2 bitlen components + 24 for seed
+ * structure.
+ */
+ else
+ return 64 + 2 * nbyte;
+ } else {
+ /* Expected length: 4 for 'e' + 'n' */
+ if (ispub)
+ return 4 + nbyte;
+ else
+ /*
+ * Expected length: 4 for 'e' and 7 other components. 2
+ * components are bitlen size, 5 are bitlen/2
+ */
+ return 4 + 2 * nbyte + 5 * hnbyte;
+ }
+
+}
static EVP_PKEY *do_b2i(const unsigned char **in, unsigned int length,
- int ispub)
- {
- const unsigned char *p = *in;
- unsigned int bitlen, magic;
- int isdss;
- if (do_blob_header(&p, length, &magic, &bitlen, &isdss, &ispub) <= 0)
- {
- PEMerr(PEM_F_DO_B2I, PEM_R_KEYBLOB_HEADER_PARSE_ERROR);
- return NULL;
- }
- length -= 16;
- if (length < blob_length(bitlen, isdss, ispub))
- {
- PEMerr(PEM_F_DO_B2I, PEM_R_KEYBLOB_TOO_SHORT);
- return NULL;
- }
- if (isdss)
- return b2i_dss(&p, length, bitlen, ispub);
- else
- return b2i_rsa(&p, length, bitlen, ispub);
- }
+ int ispub)
+{
+ const unsigned char *p = *in;
+ unsigned int bitlen, magic;
+ int isdss;
+ if (do_blob_header(&p, length, &magic, &bitlen, &isdss, &ispub) <= 0) {
+ PEMerr(PEM_F_DO_B2I, PEM_R_KEYBLOB_HEADER_PARSE_ERROR);
+ return NULL;
+ }
+ length -= 16;
+ if (length < blob_length(bitlen, isdss, ispub)) {
+ PEMerr(PEM_F_DO_B2I, PEM_R_KEYBLOB_TOO_SHORT);
+ return NULL;
+ }
+ if (isdss)
+ return b2i_dss(&p, length, bitlen, ispub);
+ else
+ return b2i_rsa(&p, length, bitlen, ispub);
+}
static EVP_PKEY *do_b2i_bio(BIO *in, int ispub)
- {
- const unsigned char *p;
- unsigned char hdr_buf[16], *buf = NULL;
- unsigned int bitlen, magic, length;
- int isdss;
- EVP_PKEY *ret = NULL;
- if (BIO_read(in, hdr_buf, 16) != 16)
- {
- PEMerr(PEM_F_DO_B2I_BIO, PEM_R_KEYBLOB_TOO_SHORT);
- return NULL;
- }
- p = hdr_buf;
- if (do_blob_header(&p, 16, &magic, &bitlen, &isdss, &ispub) <= 0)
- return NULL;
-
- length = blob_length(bitlen, isdss, ispub);
- buf = OPENSSL_malloc(length);
- if (!buf)
- {
- PEMerr(PEM_F_DO_B2I_BIO, ERR_R_MALLOC_FAILURE);
- goto err;
- }
- p = buf;
- if (BIO_read(in, buf, length) != (int)length)
- {
- PEMerr(PEM_F_DO_B2I_BIO, PEM_R_KEYBLOB_TOO_SHORT);
- goto err;
- }
-
- if (isdss)
- ret = b2i_dss(&p, length, bitlen, ispub);
- else
- ret = b2i_rsa(&p, length, bitlen, ispub);
-
- err:
- if (buf)
- OPENSSL_free(buf);
- return ret;
- }
+{
+ const unsigned char *p;
+ unsigned char hdr_buf[16], *buf = NULL;
+ unsigned int bitlen, magic, length;
+ int isdss;
+ EVP_PKEY *ret = NULL;
+ if (BIO_read(in, hdr_buf, 16) != 16) {
+ PEMerr(PEM_F_DO_B2I_BIO, PEM_R_KEYBLOB_TOO_SHORT);
+ return NULL;
+ }
+ p = hdr_buf;
+ if (do_blob_header(&p, 16, &magic, &bitlen, &isdss, &ispub) <= 0)
+ return NULL;
+
+ length = blob_length(bitlen, isdss, ispub);
+ buf = OPENSSL_malloc(length);
+ if (buf == NULL) {
+ PEMerr(PEM_F_DO_B2I_BIO, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ p = buf;
+ if (BIO_read(in, buf, length) != (int)length) {
+ PEMerr(PEM_F_DO_B2I_BIO, PEM_R_KEYBLOB_TOO_SHORT);
+ goto err;
+ }
+
+ if (isdss)
+ ret = b2i_dss(&p, length, bitlen, ispub);
+ else
+ ret = b2i_rsa(&p, length, bitlen, ispub);
+
+ err:
+ OPENSSL_free(buf);
+ return ret;
+}
static EVP_PKEY *b2i_dss(const unsigned char **in, unsigned int length,
- unsigned int bitlen, int ispub)
- {
- const unsigned char *p = *in;
- EVP_PKEY *ret = NULL;
- DSA *dsa = NULL;
- BN_CTX *ctx = NULL;
- unsigned int nbyte;
- nbyte = (bitlen + 7) >> 3;
-
- dsa = DSA_new();
- ret = EVP_PKEY_new();
- if (!dsa || !ret)
- goto memerr;
- if (!read_lebn(&p, nbyte, &dsa->p))
- goto memerr;
- if (!read_lebn(&p, 20, &dsa->q))
- goto memerr;
- if (!read_lebn(&p, nbyte, &dsa->g))
- goto memerr;
- if (ispub)
- {
- if (!read_lebn(&p, nbyte, &dsa->pub_key))
- goto memerr;
- }
- else
- {
- if (!read_lebn(&p, 20, &dsa->priv_key))
- goto memerr;
- /* Calculate public key */
- if (!(dsa->pub_key = BN_new()))
- goto memerr;
- if (!(ctx = BN_CTX_new()))
- goto memerr;
-
- if (!BN_mod_exp(dsa->pub_key, dsa->g,
- dsa->priv_key, dsa->p, ctx))
-
- goto memerr;
- BN_CTX_free(ctx);
- }
-
- EVP_PKEY_set1_DSA(ret, dsa);
- DSA_free(dsa);
- *in = p;
- return ret;
-
- memerr:
- PEMerr(PEM_F_B2I_DSS, ERR_R_MALLOC_FAILURE);
- if (dsa)
- DSA_free(dsa);
- if (ret)
- EVP_PKEY_free(ret);
- if (ctx)
- BN_CTX_free(ctx);
- return NULL;
- }
+ unsigned int bitlen, int ispub)
+{
+ const unsigned char *p = *in;
+ EVP_PKEY *ret = NULL;
+ DSA *dsa = NULL;
+ BN_CTX *ctx = NULL;
+ unsigned int nbyte;
+ nbyte = (bitlen + 7) >> 3;
+
+ dsa = DSA_new();
+ ret = EVP_PKEY_new();
+ if (dsa == NULL || ret == NULL)
+ goto memerr;
+ if (!read_lebn(&p, nbyte, &dsa->p))
+ goto memerr;
+ if (!read_lebn(&p, 20, &dsa->q))
+ goto memerr;
+ if (!read_lebn(&p, nbyte, &dsa->g))
+ goto memerr;
+ if (ispub) {
+ if (!read_lebn(&p, nbyte, &dsa->pub_key))
+ goto memerr;
+ } else {
+ if (!read_lebn(&p, 20, &dsa->priv_key))
+ goto memerr;
+ /* Calculate public key */
+ if ((dsa->pub_key = BN_new()) == NULL)
+ goto memerr;
+ if ((ctx = BN_CTX_new()) == NULL)
+ goto memerr;
+
+ if (!BN_mod_exp(dsa->pub_key, dsa->g, dsa->priv_key, dsa->p, ctx))
+ goto memerr;
+ BN_CTX_free(ctx);
+ }
+
+ EVP_PKEY_set1_DSA(ret, dsa);
+ DSA_free(dsa);
+ *in = p;
+ return ret;
+
+ memerr:
+ PEMerr(PEM_F_B2I_DSS, ERR_R_MALLOC_FAILURE);
+ DSA_free(dsa);
+ EVP_PKEY_free(ret);
+ BN_CTX_free(ctx);
+ return NULL;
+}
static EVP_PKEY *b2i_rsa(const unsigned char **in, unsigned int length,
- unsigned int bitlen, int ispub)
-
- {
- const unsigned char *p = *in;
- EVP_PKEY *ret = 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)
- goto memerr;
- rsa->e = BN_new();
- if (!rsa->e)
- goto memerr;
- if (!BN_set_word(rsa->e, read_ledword(&p)))
- goto memerr;
- if (!read_lebn(&p, nbyte, &rsa->n))
- goto memerr;
- if (!ispub)
- {
- if (!read_lebn(&p, hnbyte, &rsa->p))
- goto memerr;
- if (!read_lebn(&p, hnbyte, &rsa->q))
- goto memerr;
- if (!read_lebn(&p, hnbyte, &rsa->dmp1))
- goto memerr;
- if (!read_lebn(&p, hnbyte, &rsa->dmq1))
- goto memerr;
- if (!read_lebn(&p, hnbyte, &rsa->iqmp))
- goto memerr;
- if (!read_lebn(&p, nbyte, &rsa->d))
- goto memerr;
- }
-
- EVP_PKEY_set1_RSA(ret, rsa);
- RSA_free(rsa);
- *in = p;
- return ret;
- memerr:
- PEMerr(PEM_F_B2I_RSA, ERR_R_MALLOC_FAILURE);
- if (rsa)
- RSA_free(rsa);
- if (ret)
- EVP_PKEY_free(ret);
- return NULL;
- }
+ unsigned int bitlen, int ispub)
+{
+ const unsigned char *p = *in;
+ EVP_PKEY *ret = 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 == NULL || ret == NULL)
+ goto memerr;
+ rsa->e = BN_new();
+ if (rsa->e == NULL)
+ goto memerr;
+ if (!BN_set_word(rsa->e, read_ledword(&p)))
+ goto memerr;
+ if (!read_lebn(&p, nbyte, &rsa->n))
+ goto memerr;
+ if (!ispub) {
+ if (!read_lebn(&p, hnbyte, &rsa->p))
+ goto memerr;
+ if (!read_lebn(&p, hnbyte, &rsa->q))
+ goto memerr;
+ if (!read_lebn(&p, hnbyte, &rsa->dmp1))
+ goto memerr;
+ if (!read_lebn(&p, hnbyte, &rsa->dmq1))
+ goto memerr;
+ if (!read_lebn(&p, hnbyte, &rsa->iqmp))
+ goto memerr;
+ if (!read_lebn(&p, nbyte, &rsa->d))
+ goto memerr;
+ }
+
+ EVP_PKEY_set1_RSA(ret, rsa);
+ RSA_free(rsa);
+ *in = p;
+ return ret;
+ memerr:
+ PEMerr(PEM_F_B2I_RSA, ERR_R_MALLOC_FAILURE);
+ RSA_free(rsa);
+ EVP_PKEY_free(ret);
+ return NULL;
+}
EVP_PKEY *b2i_PrivateKey(const unsigned char **in, long length)
- {
- return do_b2i(in, length, 0);
- }
+{
+ return do_b2i(in, length, 0);
+}
EVP_PKEY *b2i_PublicKey(const unsigned char **in, long length)
- {
- return do_b2i(in, length, 1);
- }
-
+{
+ return do_b2i(in, length, 1);
+}
EVP_PKEY *b2i_PrivateKey_bio(BIO *in)
- {
- return do_b2i_bio(in, 0);
- }
+{
+ return do_b2i_bio(in, 0);
+}
EVP_PKEY *b2i_PublicKey_bio(BIO *in)
- {
- return do_b2i_bio(in, 1);
- }
+{
+ return do_b2i_bio(in, 1);
+}
static void write_ledword(unsigned char **out, unsigned int dw)
- {
- unsigned char *p = *out;
- *p++ = dw & 0xff;
- *p++ = (dw>>8) & 0xff;
- *p++ = (dw>>16) & 0xff;
- *p++ = (dw>>24) & 0xff;
- *out = p;
- }
+{
+ unsigned char *p = *out;
+ *p++ = dw & 0xff;
+ *p++ = (dw >> 8) & 0xff;
+ *p++ = (dw >> 16) & 0xff;
+ *p++ = (dw >> 24) & 0xff;
+ *out = p;
+}
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;
- }
- }
- }
-
+{
+ 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;
+ }
+ }
+}
static int check_bitlen_rsa(RSA *rsa, int ispub, unsigned int *magic);
static int check_bitlen_dsa(DSA *dsa, int ispub, unsigned int *magic);
static void write_rsa(unsigned char **out, RSA *rsa, int ispub);
static void write_dsa(unsigned char **out, DSA *dsa, int ispub);
-
+
static int do_i2b(unsigned char **out, EVP_PKEY *pk, int ispub)
- {
- unsigned char *p;
- unsigned int bitlen, magic, keyalg;
- int outlen, noinc = 0;
- if (pk->type == EVP_PKEY_DSA)
- {
- bitlen = check_bitlen_dsa(pk->pkey.dsa, ispub, &magic);
- keyalg = MS_KEYALG_DSS_SIGN;
- }
- else if (pk->type == EVP_PKEY_RSA)
- {
- bitlen = check_bitlen_rsa(pk->pkey.rsa, ispub, &magic);
- keyalg = MS_KEYALG_RSA_KEYX;
- }
- else
- return -1;
- if (bitlen == 0)
- return -1;
- outlen = 16 + blob_length(bitlen,
- keyalg == MS_KEYALG_DSS_SIGN ? 1 : 0, ispub);
- if (out == NULL)
- return outlen;
- if (*out)
- p = *out;
- else
- {
- p = OPENSSL_malloc(outlen);
- if (!p)
- return -1;
- *out = p;
- noinc = 1;
- }
- if (ispub)
- *p++ = MS_PUBLICKEYBLOB;
- else
- *p++ = MS_PRIVATEKEYBLOB;
- *p++ = 0x2;
- *p++ = 0;
- *p++ = 0;
- write_ledword(&p, keyalg);
- write_ledword(&p, magic);
- write_ledword(&p, bitlen);
- if (keyalg == MS_KEYALG_DSS_SIGN)
- write_dsa(&p, pk->pkey.dsa, ispub);
- else
- write_rsa(&p, pk->pkey.rsa, ispub);
- if (!noinc)
- *out += outlen;
- return outlen;
- }
+{
+ unsigned char *p;
+ unsigned int bitlen, magic = 0, keyalg;
+ int outlen, noinc = 0;
+ 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 (pktype == EVP_PKEY_RSA) {
+ bitlen = check_bitlen_rsa(EVP_PKEY_get0_RSA(pk), ispub, &magic);
+ keyalg = MS_KEYALG_RSA_KEYX;
+ } else
+ return -1;
+ if (bitlen == 0)
+ return -1;
+ outlen = 16 + blob_length(bitlen,
+ keyalg == MS_KEYALG_DSS_SIGN ? 1 : 0, ispub);
+ if (out == NULL)
+ return outlen;
+ if (*out)
+ p = *out;
+ else {
+ p = OPENSSL_malloc(outlen);
+ if (p == NULL)
+ return -1;
+ *out = p;
+ noinc = 1;
+ }
+ if (ispub)
+ *p++ = MS_PUBLICKEYBLOB;
+ else
+ *p++ = MS_PRIVATEKEYBLOB;
+ *p++ = 0x2;
+ *p++ = 0;
+ *p++ = 0;
+ write_ledword(&p, keyalg);
+ write_ledword(&p, magic);
+ write_ledword(&p, bitlen);
+ if (keyalg == MS_KEYALG_DSS_SIGN)
+ write_dsa(&p, EVP_PKEY_get0_DSA(pk), ispub);
+ else
+ write_rsa(&p, EVP_PKEY_get0_RSA(pk), ispub);
+ if (!noinc)
+ *out += outlen;
+ return outlen;
+}
static int do_i2b_bio(BIO *out, EVP_PKEY *pk, int ispub)
- {
- unsigned char *tmp = NULL;
- int outlen, wrlen;
- outlen = do_i2b(&tmp, pk, ispub);
- if (outlen < 0)
- return -1;
- wrlen = BIO_write(out, tmp, outlen);
- OPENSSL_free(tmp);
- if (wrlen == outlen)
- return outlen;
- return -1;
- }
+{
+ unsigned char *tmp = NULL;
+ int outlen, wrlen;
+ outlen = do_i2b(&tmp, pk, ispub);
+ if (outlen < 0)
+ return -1;
+ wrlen = BIO_write(out, tmp, outlen);
+ OPENSSL_free(tmp);
+ if (wrlen == outlen)
+ return outlen;
+ return -1;
+}
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))
- goto badkey;
- if (ispub)
- {
- if (BN_num_bits(dsa->pub_key) > bitlen)
- goto badkey;
- *pmagic = MS_DSS1MAGIC;
- }
- else
- {
- if (BN_num_bits(dsa->priv_key) > 160)
- goto badkey;
- *pmagic = MS_DSS2MAGIC;
- }
-
- return bitlen;
- badkey:
- PEMerr(PEM_F_CHECK_BITLEN_DSA, PEM_R_UNSUPPORTED_KEY_COMPONENTS);
- return 0;
- }
+{
+ int bitlen;
+ bitlen = BN_num_bits(dsa->p);
+ if ((bitlen & 7) || (BN_num_bits(dsa->q) != 160)
+ || (BN_num_bits(dsa->g) > bitlen))
+ goto badkey;
+ if (ispub) {
+ if (BN_num_bits(dsa->pub_key) > bitlen)
+ goto badkey;
+ *pmagic = MS_DSS1MAGIC;
+ } else {
+ if (BN_num_bits(dsa->priv_key) > 160)
+ goto badkey;
+ *pmagic = MS_DSS2MAGIC;
+ }
+
+ return bitlen;
+ badkey:
+ PEMerr(PEM_F_CHECK_BITLEN_DSA, PEM_R_UNSUPPORTED_KEY_COMPONENTS);
+ return 0;
+}
static int check_bitlen_rsa(RSA *rsa, int ispub, unsigned int *pmagic)
- {
- int nbyte, hnbyte, bitlen;
- if (BN_num_bits(rsa->e) > 32)
- goto badkey;
- bitlen = BN_num_bits(rsa->n);
- nbyte = BN_num_bytes(rsa->n);
- hnbyte = (BN_num_bits(rsa->n) + 15) >> 4;
- if (ispub)
- {
- *pmagic = MS_RSA1MAGIC;
- return bitlen;
- }
- else
- {
- *pmagic = MS_RSA2MAGIC;
- /* For private key each component must fit within nbyte or
- * hnbyte.
- */
- if (BN_num_bytes(rsa->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))
- goto badkey;
- }
- return bitlen;
- badkey:
- PEMerr(PEM_F_CHECK_BITLEN_RSA, PEM_R_UNSUPPORTED_KEY_COMPONENTS);
- return 0;
- }
-
+{
+ int nbyte, hnbyte, bitlen;
+ if (BN_num_bits(rsa->e) > 32)
+ goto badkey;
+ bitlen = BN_num_bits(rsa->n);
+ nbyte = BN_num_bytes(rsa->n);
+ hnbyte = (BN_num_bits(rsa->n) + 15) >> 4;
+ if (ispub) {
+ *pmagic = MS_RSA1MAGIC;
+ return bitlen;
+ } else {
+ *pmagic = MS_RSA2MAGIC;
+ /*
+ * For private key each component must fit within nbyte or hnbyte.
+ */
+ if (BN_num_bytes(rsa->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))
+ goto badkey;
+ }
+ return bitlen;
+ badkey:
+ PEMerr(PEM_F_CHECK_BITLEN_RSA, PEM_R_UNSUPPORTED_KEY_COMPONENTS);
+ return 0;
+}
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);
- 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);
- }
-
-
+{
+ 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);
+ 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);
+}
+
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);
- if (ispub)
- write_lebn(out, dsa->pub_key, nbyte);
- else
- write_lebn(out, dsa->priv_key, 20);
- /* Set "invalid" for seed structure values */
- memset(*out, 0xff, 24);
- *out += 24;
- return;
- }
-
+{
+ 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);
+ if (ispub)
+ write_lebn(out, dsa->pub_key, nbyte);
+ else
+ write_lebn(out, dsa->priv_key, 20);
+ /* Set "invalid" for seed structure values */
+ memset(*out, 0xff, 24);
+ *out += 24;
+ return;
+}
int i2b_PrivateKey_bio(BIO *out, EVP_PKEY *pk)
- {
- return do_i2b_bio(out, pk, 0);
- }
+{
+ return do_i2b_bio(out, pk, 0);
+}
int i2b_PublicKey_bio(BIO *out, EVP_PKEY *pk)
- {
- return do_i2b_bio(out, pk, 1);
- }
+{
+ return do_i2b_bio(out, pk, 1);
+}
+
+# ifndef OPENSSL_NO_RC4
static int do_PVK_header(const unsigned char **in, unsigned int length,
- int skip_magic,
- unsigned int *psaltlen, unsigned int *pkeylen)
-
- {
- const unsigned char *p = *in;
- unsigned int pvk_magic, keytype, is_encrypted;
- if (skip_magic)
- {
- if (length < 20)
- {
- 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);
- return 0;
- }
- }
- /* Skip reserved */
- p += 4;
- keytype = read_ledword(&p);
- is_encrypted = read_ledword(&p);
- *psaltlen = read_ledword(&p);
- *pkeylen = read_ledword(&p);
-
- if (is_encrypted && !*psaltlen)
- {
- PEMerr(PEM_F_DO_PVK_HEADER, PEM_R_INCONSISTENT_HEADER);
- return 0;
- }
-
- *in = p;
- return 1;
- }
-
-static int derive_pvk_key(unsigned char *key,
- const unsigned char *salt, unsigned int saltlen,
- const unsigned char *pass, int passlen)
- {
- EVP_MD_CTX mctx;
- EVP_MD_CTX_init(&mctx);
- EVP_DigestInit_ex(&mctx, EVP_sha1(), NULL);
- EVP_DigestUpdate(&mctx, salt, saltlen);
- EVP_DigestUpdate(&mctx, pass, passlen);
- EVP_DigestFinal_ex(&mctx, key, NULL);
- EVP_MD_CTX_cleanup(&mctx);
- return 1;
- }
-
+ int skip_magic,
+ unsigned int *psaltlen, unsigned int *pkeylen)
+{
+ const unsigned char *p = *in;
+ unsigned int pvk_magic, is_encrypted;
+ if (skip_magic) {
+ if (length < 20) {
+ PEMerr(PEM_F_DO_PVK_HEADER, PEM_R_PVK_TOO_SHORT);
+ return 0;
+ }
+ } else {
+ if (length < 24) {
+ PEMerr(PEM_F_DO_PVK_HEADER, PEM_R_PVK_TOO_SHORT);
+ return 0;
+ }
+ pvk_magic = read_ledword(&p);
+ if (pvk_magic != MS_PVKMAGIC) {
+ PEMerr(PEM_F_DO_PVK_HEADER, PEM_R_BAD_MAGIC_NUMBER);
+ return 0;
+ }
+ }
+ /* Skip reserved */
+ p += 4;
+ /*
+ * keytype =
+ */ read_ledword(&p);
+ is_encrypted = read_ledword(&p);
+ *psaltlen = read_ledword(&p);
+ *pkeylen = read_ledword(&p);
+
+ if (is_encrypted && !*psaltlen) {
+ PEMerr(PEM_F_DO_PVK_HEADER, PEM_R_INCONSISTENT_HEADER);
+ return 0;
+ }
+
+ *in = p;
+ return 1;
+}
+
+static int derive_pvk_key(unsigned char *key,
+ const unsigned char *salt, unsigned int saltlen,
+ const unsigned char *pass, int passlen)
+{
+ EVP_MD_CTX *mctx = EVP_MD_CTX_new();
+ int rv = 1;
+ 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_free(mctx);
+ return rv;
+}
static EVP_PKEY *do_PVK_body(const unsigned char **in,
- unsigned int saltlen, unsigned int keylen,
- pem_password_cb *cb, void *u)
- {
- EVP_PKEY *ret = NULL;
- const unsigned char *p = *in;
- unsigned int magic;
- unsigned char *enctmp = NULL, *q;
- if (saltlen)
- {
- char psbuf[PEM_BUFSIZE];
- unsigned char keybuf[20];
- EVP_CIPHER_CTX cctx;
- int enctmplen, inlen;
- if (cb)
- inlen=cb(psbuf,PEM_BUFSIZE,0,u);
- else
- 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;
- }
- enctmp = OPENSSL_malloc(keylen + 8);
- if (!enctmp)
- {
- PEMerr(PEM_F_DO_PVK_BODY, ERR_R_MALLOC_FAILURE);
- return NULL;
- }
- if (!derive_pvk_key(keybuf, p, saltlen,
- (unsigned char *)psbuf, inlen))
- return NULL;
- p += saltlen;
- /* Copy BLOBHEADER across, decrypt rest */
- memcpy(enctmp, p, 8);
- p += 8;
- inlen = keylen - 8;
- q = enctmp + 8;
- EVP_CIPHER_CTX_init(&cctx);
- EVP_DecryptInit_ex(&cctx, EVP_rc4(), NULL, keybuf, NULL);
- EVP_DecryptUpdate(&cctx, q, &enctmplen, p, inlen);
- EVP_DecryptFinal_ex(&cctx, q + enctmplen, &enctmplen);
- magic = read_ledword((const unsigned char **)&q);
- if (magic != MS_RSA2MAGIC && magic != MS_DSS2MAGIC)
- {
- q = enctmp + 8;
- memset(keybuf + 5, 0, 11);
- EVP_DecryptInit_ex(&cctx, EVP_rc4(), NULL, keybuf,
- NULL);
- OPENSSL_cleanse(keybuf, 20);
- EVP_DecryptUpdate(&cctx, q, &enctmplen, p, inlen);
- EVP_DecryptFinal_ex(&cctx, q + enctmplen,
- &enctmplen);
- magic = read_ledword((const unsigned char **)&q);
- if (magic != MS_RSA2MAGIC && magic != MS_DSS2MAGIC)
- {
- EVP_CIPHER_CTX_cleanup(&cctx);
- PEMerr(PEM_F_DO_PVK_BODY, PEM_R_BAD_DECRYPT);
- goto err;
- }
- }
- else
- OPENSSL_cleanse(keybuf, 20);
- EVP_CIPHER_CTX_cleanup(&cctx);
- p = enctmp;
- }
-
- ret = b2i_PrivateKey(&p, keylen);
- err:
- if (enctmp && saltlen)
- OPENSSL_free(enctmp);
- return ret;
- }
-
+ unsigned int saltlen, unsigned int keylen,
+ pem_password_cb *cb, void *u)
+{
+ EVP_PKEY *ret = NULL;
+ const unsigned char *p = *in;
+ unsigned int magic;
+ unsigned char *enctmp = NULL, *q;
+
+ EVP_CIPHER_CTX *cctx = EVP_CIPHER_CTX_new();
+ if (saltlen) {
+ char psbuf[PEM_BUFSIZE];
+ unsigned char keybuf[20];
+ int enctmplen, inlen;
+ if (cb)
+ inlen = cb(psbuf, PEM_BUFSIZE, 0, u);
+ else
+ inlen = PEM_def_callback(psbuf, PEM_BUFSIZE, 0, u);
+ if (inlen <= 0) {
+ PEMerr(PEM_F_DO_PVK_BODY, PEM_R_BAD_PASSWORD_READ);
+ goto err;
+ }
+ enctmp = OPENSSL_malloc(keylen + 8);
+ if (enctmp == NULL) {
+ PEMerr(PEM_F_DO_PVK_BODY, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ if (!derive_pvk_key(keybuf, p, saltlen,
+ (unsigned char *)psbuf, inlen))
+ 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);
+ goto err;
+ }
+ inlen = keylen - 8;
+ q = enctmp + 8;
+ if (!EVP_DecryptInit_ex(cctx, EVP_rc4(), NULL, keybuf, NULL))
+ goto err;
+ if (!EVP_DecryptUpdate(cctx, q, &enctmplen, p, inlen))
+ goto err;
+ 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))
+ goto err;
+ OPENSSL_cleanse(keybuf, 20);
+ if (!EVP_DecryptUpdate(cctx, q, &enctmplen, p, inlen))
+ goto err;
+ if (!EVP_DecryptFinal_ex(cctx, q + enctmplen, &enctmplen))
+ goto err;
+ magic = read_ledword((const unsigned char **)&q);
+ if (magic != MS_RSA2MAGIC && magic != MS_DSS2MAGIC) {
+ PEMerr(PEM_F_DO_PVK_BODY, PEM_R_BAD_DECRYPT);
+ goto err;
+ }
+ } else
+ OPENSSL_cleanse(keybuf, 20);
+ p = enctmp;
+ }
+
+ ret = b2i_PrivateKey(&p, keylen);
+ err:
+ EVP_CIPHER_CTX_free(cctx);
+ OPENSSL_free(enctmp);
+ return ret;
+}
EVP_PKEY *b2i_PVK_bio(BIO *in, pem_password_cb *cb, void *u)
- {
- unsigned char pvk_hdr[24], *buf = NULL;
- const unsigned char *p;
- int buflen;
- EVP_PKEY *ret = NULL;
- unsigned int saltlen, keylen;
- if (BIO_read(in, pvk_hdr, 24) != 24)
- {
- PEMerr(PEM_F_B2I_PVK_BIO, PEM_R_PVK_DATA_TOO_SHORT);
- return NULL;
- }
- p = pvk_hdr;
-
- if (!do_PVK_header(&p, 24, 0, &saltlen, &keylen))
- return 0;
- buflen = (int) keylen + saltlen;
- buf = OPENSSL_malloc(buflen);
- if (!buf)
- {
- PEMerr(PEM_F_B2I_PVK_BIO, ERR_R_MALLOC_FAILURE);
- return 0;
- }
- p = buf;
- if (BIO_read(in, buf, buflen) != buflen)
- {
- PEMerr(PEM_F_B2I_PVK_BIO, PEM_R_PVK_DATA_TOO_SHORT);
- goto err;
- }
- ret = do_PVK_body(&p, saltlen, keylen, cb, u);
-
- err:
- if (buf)
- {
- OPENSSL_cleanse(buf, buflen);
- OPENSSL_free(buf);
- }
- return ret;
- }
-
-
-
-static int i2b_PVK(unsigned char **out, EVP_PKEY*pk, int enclevel,
- pem_password_cb *cb, void *u)
- {
- int outlen = 24, noinc, pklen;
- unsigned char *p, *salt = NULL;
- if (enclevel)
- outlen += PVK_SALTLEN;
- pklen = do_i2b(NULL, pk, 0);
- if (pklen < 0)
- return -1;
- outlen += pklen;
- if (!out)
- return outlen;
- if (*out)
- {
- p = *out;
- noinc = 0;
- }
- else
- {
- p = OPENSSL_malloc(outlen);
- if (!p)
- {
- PEMerr(PEM_F_I2B_PVK,ERR_R_MALLOC_FAILURE);
- return -1;
- }
- *out = p;
- noinc = 1;
- }
-
- write_ledword(&p, MS_PVKMAGIC);
- write_ledword(&p, 0);
- if (pk->type == EVP_PKEY_DSA)
- write_ledword(&p, MS_KEYTYPE_SIGN);
- else
- write_ledword(&p, MS_KEYTYPE_KEYX);
- write_ledword(&p, enclevel ? 1 : 0);
- write_ledword(&p, enclevel ? PVK_SALTLEN: 0);
- write_ledword(&p, pklen);
- if (enclevel)
- {
- if (RAND_bytes(p, PVK_SALTLEN) <= 0)
- goto error;
- salt = p;
- p += PVK_SALTLEN;
- }
- do_i2b(&p, pk, 0);
- if (enclevel == 0)
- return outlen;
- else
- {
- char psbuf[PEM_BUFSIZE];
- unsigned char keybuf[20];
- EVP_CIPHER_CTX cctx;
- int enctmplen, inlen;
- if (cb)
- inlen=cb(psbuf,PEM_BUFSIZE,1,u);
- else
- inlen=PEM_def_callback(psbuf,PEM_BUFSIZE,1,u);
- if (inlen <= 0)
- {
- PEMerr(PEM_F_I2B_PVK,PEM_R_BAD_PASSWORD_READ);
- goto error;
- }
- if (!derive_pvk_key(keybuf, salt, PVK_SALTLEN,
- (unsigned char *)psbuf, inlen))
- goto error;
- if (enclevel == 1)
- memset(keybuf + 5, 0, 11);
- p = salt + PVK_SALTLEN + 8;
- EVP_CIPHER_CTX_init(&cctx);
- EVP_EncryptInit_ex(&cctx, EVP_rc4(), NULL, keybuf, NULL);
- OPENSSL_cleanse(keybuf, 20);
- EVP_DecryptUpdate(&cctx, p, &enctmplen, p, pklen - 8);
- EVP_DecryptFinal_ex(&cctx, p + enctmplen, &enctmplen);
- EVP_CIPHER_CTX_cleanup(&cctx);
- }
- return outlen;
-
- error:
- return -1;
- }
+{
+ unsigned char pvk_hdr[24], *buf = NULL;
+ const unsigned char *p;
+ int buflen;
+ EVP_PKEY *ret = NULL;
+ unsigned int saltlen, keylen;
+ if (BIO_read(in, pvk_hdr, 24) != 24) {
+ PEMerr(PEM_F_B2I_PVK_BIO, PEM_R_PVK_DATA_TOO_SHORT);
+ return NULL;
+ }
+ p = pvk_hdr;
+
+ if (!do_PVK_header(&p, 24, 0, &saltlen, &keylen))
+ return 0;
+ buflen = (int)keylen + saltlen;
+ buf = OPENSSL_malloc(buflen);
+ if (buf == NULL) {
+ PEMerr(PEM_F_B2I_PVK_BIO, ERR_R_MALLOC_FAILURE);
+ return 0;
+ }
+ p = buf;
+ if (BIO_read(in, buf, buflen) != buflen) {
+ PEMerr(PEM_F_B2I_PVK_BIO, PEM_R_PVK_DATA_TOO_SHORT);
+ goto err;
+ }
+ ret = do_PVK_body(&p, saltlen, keylen, cb, u);
+
+ err:
+ OPENSSL_clear_free(buf, buflen);
+ return ret;
+}
+
+static int i2b_PVK(unsigned char **out, EVP_PKEY *pk, int enclevel,
+ pem_password_cb *cb, void *u)
+{
+ int outlen = 24, pklen;
+ unsigned char *p, *salt = NULL;
+ EVP_CIPHER_CTX *cctx = EVP_CIPHER_CTX_new();
+ if (enclevel)
+ outlen += PVK_SALTLEN;
+ pklen = do_i2b(NULL, pk, 0);
+ if (pklen < 0)
+ return -1;
+ outlen += pklen;
+ if (!out)
+ return outlen;
+ if (*out)
+ p = *out;
+ else {
+ p = OPENSSL_malloc(outlen);
+ if (p == NULL) {
+ PEMerr(PEM_F_I2B_PVK, ERR_R_MALLOC_FAILURE);
+ return -1;
+ }
+ *out = p;
+ }
+
+ write_ledword(&p, MS_PVKMAGIC);
+ write_ledword(&p, 0);
+ if (EVP_PKEY_id(pk) == EVP_PKEY_DSA)
+ write_ledword(&p, MS_KEYTYPE_SIGN);
+ else
+ write_ledword(&p, MS_KEYTYPE_KEYX);
+ write_ledword(&p, enclevel ? 1 : 0);
+ write_ledword(&p, enclevel ? PVK_SALTLEN : 0);
+ write_ledword(&p, pklen);
+ if (enclevel) {
+ if (RAND_bytes(p, PVK_SALTLEN) <= 0)
+ goto error;
+ salt = p;
+ p += PVK_SALTLEN;
+ }
+ do_i2b(&p, pk, 0);
+ if (enclevel == 0)
+ return outlen;
+ else {
+ char psbuf[PEM_BUFSIZE];
+ unsigned char keybuf[20];
+ int enctmplen, inlen;
+ if (cb)
+ inlen = cb(psbuf, PEM_BUFSIZE, 1, u);
+ else
+ inlen = PEM_def_callback(psbuf, PEM_BUFSIZE, 1, u);
+ if (inlen <= 0) {
+ PEMerr(PEM_F_I2B_PVK, PEM_R_BAD_PASSWORD_READ);
+ goto error;
+ }
+ if (!derive_pvk_key(keybuf, salt, PVK_SALTLEN,
+ (unsigned char *)psbuf, inlen))
+ goto error;
+ if (enclevel == 1)
+ memset(keybuf + 5, 0, 11);
+ p = salt + PVK_SALTLEN + 8;
+ 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))
+ goto error;
+ if (!EVP_DecryptFinal_ex(cctx, p + enctmplen, &enctmplen))
+ goto error;
+ }
+ EVP_CIPHER_CTX_free(cctx);
+ return outlen;
+
+ error:
+ EVP_CIPHER_CTX_free(cctx);
+ return -1;
+}
int i2b_PVK_bio(BIO *out, EVP_PKEY *pk, int enclevel,
- pem_password_cb *cb, void *u)
- {
- unsigned char *tmp = NULL;
- int outlen, wrlen;
- outlen = i2b_PVK(&tmp, pk, enclevel, cb, u);
- if (outlen < 0)
- return -1;
- wrlen = BIO_write(out, tmp, outlen);
- OPENSSL_free(tmp);
- if (wrlen == outlen)
- {
- PEMerr(PEM_F_I2B_PVK_BIO, PEM_R_BIO_WRITE_FAILURE);
- return outlen;
- }
- return -1;
- }
+ pem_password_cb *cb, void *u)
+{
+ unsigned char *tmp = NULL;
+ int outlen, wrlen;
+ outlen = i2b_PVK(&tmp, pk, enclevel, cb, u);
+ if (outlen < 0)
+ return -1;
+ wrlen = BIO_write(out, tmp, outlen);
+ OPENSSL_free(tmp);
+ if (wrlen == outlen) {
+ PEMerr(PEM_F_I2B_PVK_BIO, PEM_R_BIO_WRITE_FAILURE);
+ return outlen;
+ }
+ return -1;
+}
+
+# endif
+
+#endif
projects / openssl.git / blobdiff