2 * Copyright 2005-2020 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
11 * Support for PVK format keys and related structures (such a PUBLICKEYBLOB
12 * and PRIVATEKEYBLOB).
16 * DSA low level APIs are deprecated for public use, but still ok for
19 #include "internal/deprecated.h"
21 #include "internal/cryptlib.h"
22 #include <openssl/pem.h>
23 #include "internal/pem_int.h"
24 #include <openssl/rand.h>
25 #include <openssl/bn.h>
26 #if !defined(OPENSSL_NO_RSA) && !defined(OPENSSL_NO_DSA)
27 # include <openssl/dsa.h>
28 # include <openssl/rsa.h>
31 * Utility function: read a DWORD (4 byte unsigned integer) in little endian
35 static unsigned int read_ledword(const unsigned char **in)
37 const unsigned char *p = *in;
39 ret = (unsigned int)*p++;
40 ret |= (unsigned int)*p++ << 8;
41 ret |= (unsigned int)*p++ << 16;
42 ret |= (unsigned int)*p++ << 24;
48 * Read a BIGNUM in little endian format. The docs say that this should take
52 static int read_lebn(const unsigned char **in, unsigned int nbyte, BIGNUM **r)
54 *r = BN_lebin2bn(*in, nbyte, NULL);
61 /* Convert private key blob to EVP_PKEY: RSA and DSA keys supported */
63 # define MS_PUBLICKEYBLOB 0x6
64 # define MS_PRIVATEKEYBLOB 0x7
65 # define MS_RSA1MAGIC 0x31415352L
66 # define MS_RSA2MAGIC 0x32415352L
67 # define MS_DSS1MAGIC 0x31535344L
68 # define MS_DSS2MAGIC 0x32535344L
70 # define MS_KEYALG_RSA_KEYX 0xa400
71 # define MS_KEYALG_DSS_SIGN 0x2200
73 # define MS_KEYTYPE_KEYX 0x1
74 # define MS_KEYTYPE_SIGN 0x2
76 /* Maximum length of a blob after header */
77 # define BLOB_MAX_LENGTH 102400
79 /* The PVK file magic number: seems to spell out "bobsfile", who is Bob? */
80 # define MS_PVKMAGIC 0xb0b5f11eL
81 /* Salt length for PVK files */
82 # define PVK_SALTLEN 0x10
83 /* Maximum length in PVK header */
84 # define PVK_MAX_KEYLEN 102400
85 /* Maximum salt length */
86 # define PVK_MAX_SALTLEN 10240
88 static EVP_PKEY *b2i_rsa(const unsigned char **in,
89 unsigned int bitlen, int ispub);
90 static EVP_PKEY *b2i_dss(const unsigned char **in,
91 unsigned int bitlen, int ispub);
93 int ossl_do_blob_header(const unsigned char **in, unsigned int length,
94 unsigned int *pmagic, unsigned int *pbitlen,
95 int *pisdss, int *pispub)
97 const unsigned char *p = *in;
101 if (*p == MS_PUBLICKEYBLOB) {
103 PEMerr(PEM_F_OSSL_DO_BLOB_HEADER, PEM_R_EXPECTING_PRIVATE_KEY_BLOB);
107 } else if (*p == MS_PRIVATEKEYBLOB) {
109 PEMerr(PEM_F_OSSL_DO_BLOB_HEADER, PEM_R_EXPECTING_PUBLIC_KEY_BLOB);
118 PEMerr(PEM_F_OSSL_DO_BLOB_HEADER, PEM_R_BAD_VERSION_NUMBER);
121 /* Ignore reserved, aiKeyAlg */
123 *pmagic = read_ledword(&p);
124 *pbitlen = read_ledword(&p);
133 PEMerr(PEM_F_OSSL_DO_BLOB_HEADER, PEM_R_EXPECTING_PRIVATE_KEY_BLOB);
143 PEMerr(PEM_F_OSSL_DO_BLOB_HEADER, PEM_R_EXPECTING_PUBLIC_KEY_BLOB);
149 PEMerr(PEM_F_OSSL_DO_BLOB_HEADER, PEM_R_BAD_MAGIC_NUMBER);
156 static unsigned int blob_length(unsigned bitlen, int isdss, int ispub)
158 unsigned int nbyte, hnbyte;
159 nbyte = (bitlen + 7) >> 3;
160 hnbyte = (bitlen + 15) >> 4;
164 * Expected length: 20 for q + 3 components bitlen each + 24 for seed
168 return 44 + 3 * nbyte;
170 * Expected length: 20 for q, priv, 2 bitlen components + 24 for seed
174 return 64 + 2 * nbyte;
176 /* Expected length: 4 for 'e' + 'n' */
181 * Expected length: 4 for 'e' and 7 other components. 2
182 * components are bitlen size, 5 are bitlen/2
184 return 4 + 2 * nbyte + 5 * hnbyte;
189 static EVP_PKEY *do_b2i(const unsigned char **in, unsigned int length,
192 const unsigned char *p = *in;
193 unsigned int bitlen, magic;
195 if (ossl_do_blob_header(&p, length, &magic, &bitlen, &isdss, &ispub) <= 0) {
196 PEMerr(PEM_F_DO_B2I, PEM_R_KEYBLOB_HEADER_PARSE_ERROR);
200 if (length < blob_length(bitlen, isdss, ispub)) {
201 PEMerr(PEM_F_DO_B2I, PEM_R_KEYBLOB_TOO_SHORT);
205 return b2i_dss(&p, bitlen, ispub);
207 return b2i_rsa(&p, bitlen, ispub);
210 static EVP_PKEY *do_b2i_bio(BIO *in, int ispub)
212 const unsigned char *p;
213 unsigned char hdr_buf[16], *buf = NULL;
214 unsigned int bitlen, magic, length;
216 EVP_PKEY *ret = NULL;
217 if (BIO_read(in, hdr_buf, 16) != 16) {
218 PEMerr(PEM_F_DO_B2I_BIO, PEM_R_KEYBLOB_TOO_SHORT);
222 if (ossl_do_blob_header(&p, 16, &magic, &bitlen, &isdss, &ispub) <= 0)
225 length = blob_length(bitlen, isdss, ispub);
226 if (length > BLOB_MAX_LENGTH) {
227 PEMerr(PEM_F_DO_B2I_BIO, PEM_R_HEADER_TOO_LONG);
230 buf = OPENSSL_malloc(length);
232 PEMerr(PEM_F_DO_B2I_BIO, ERR_R_MALLOC_FAILURE);
236 if (BIO_read(in, buf, length) != (int)length) {
237 PEMerr(PEM_F_DO_B2I_BIO, PEM_R_KEYBLOB_TOO_SHORT);
242 ret = b2i_dss(&p, bitlen, ispub);
244 ret = b2i_rsa(&p, bitlen, ispub);
251 static EVP_PKEY *b2i_dss(const unsigned char **in,
252 unsigned int bitlen, int ispub)
254 const unsigned char *p = *in;
255 EVP_PKEY *ret = NULL;
259 BIGNUM *pbn = NULL, *qbn = NULL, *gbn = NULL, *priv_key = NULL;
260 BIGNUM *pub_key = NULL;
262 nbyte = (bitlen + 7) >> 3;
265 ret = EVP_PKEY_new();
266 if (dsa == NULL || ret == NULL)
268 if (!read_lebn(&p, nbyte, &pbn))
271 if (!read_lebn(&p, 20, &qbn))
274 if (!read_lebn(&p, nbyte, &gbn))
278 if (!read_lebn(&p, nbyte, &pub_key))
281 if (!read_lebn(&p, 20, &priv_key))
284 /* Set constant time flag before public key calculation */
285 BN_set_flags(priv_key, BN_FLG_CONSTTIME);
287 /* Calculate public key */
291 if ((ctx = BN_CTX_new()) == NULL)
294 if (!BN_mod_exp(pub_key, gbn, priv_key, pbn, ctx))
300 if (!DSA_set0_pqg(dsa, pbn, qbn, gbn))
302 pbn = qbn = gbn = NULL;
303 if (!DSA_set0_key(dsa, pub_key, priv_key))
305 pub_key = priv_key = NULL;
307 if (!EVP_PKEY_set1_DSA(ret, dsa))
314 PEMerr(PEM_F_B2I_DSS, ERR_R_MALLOC_FAILURE);
326 static EVP_PKEY *b2i_rsa(const unsigned char **in,
327 unsigned int bitlen, int ispub)
329 const unsigned char *pin = *in;
330 EVP_PKEY *ret = NULL;
331 BIGNUM *e = NULL, *n = NULL, *d = NULL;
332 BIGNUM *p = NULL, *q = NULL, *dmp1 = NULL, *dmq1 = NULL, *iqmp = NULL;
334 unsigned int nbyte, hnbyte;
335 nbyte = (bitlen + 7) >> 3;
336 hnbyte = (bitlen + 15) >> 4;
338 ret = EVP_PKEY_new();
339 if (rsa == NULL || ret == NULL)
344 if (!BN_set_word(e, read_ledword(&pin)))
346 if (!read_lebn(&pin, nbyte, &n))
349 if (!read_lebn(&pin, hnbyte, &p))
351 if (!read_lebn(&pin, hnbyte, &q))
353 if (!read_lebn(&pin, hnbyte, &dmp1))
355 if (!read_lebn(&pin, hnbyte, &dmq1))
357 if (!read_lebn(&pin, hnbyte, &iqmp))
359 if (!read_lebn(&pin, nbyte, &d))
361 if (!RSA_set0_factors(rsa, p, q))
364 if (!RSA_set0_crt_params(rsa, dmp1, dmq1, iqmp))
366 dmp1 = dmq1 = iqmp = NULL;
368 if (!RSA_set0_key(rsa, n, e, d))
372 if (!EVP_PKEY_set1_RSA(ret, rsa))
378 PEMerr(PEM_F_B2I_RSA, ERR_R_MALLOC_FAILURE);
392 EVP_PKEY *b2i_PrivateKey(const unsigned char **in, long length)
394 return do_b2i(in, length, 0);
397 EVP_PKEY *b2i_PublicKey(const unsigned char **in, long length)
399 return do_b2i(in, length, 1);
402 EVP_PKEY *b2i_PrivateKey_bio(BIO *in)
404 return do_b2i_bio(in, 0);
407 EVP_PKEY *b2i_PublicKey_bio(BIO *in)
409 return do_b2i_bio(in, 1);
412 static void write_ledword(unsigned char **out, unsigned int dw)
414 unsigned char *p = *out;
416 *p++ = (dw >> 8) & 0xff;
417 *p++ = (dw >> 16) & 0xff;
418 *p++ = (dw >> 24) & 0xff;
422 static void write_lebn(unsigned char **out, const BIGNUM *bn, int len)
424 BN_bn2lebinpad(bn, *out, len);
428 static int check_bitlen_rsa(RSA *rsa, int ispub, unsigned int *magic);
429 static int check_bitlen_dsa(DSA *dsa, int ispub, unsigned int *magic);
431 static void write_rsa(unsigned char **out, RSA *rsa, int ispub);
432 static void write_dsa(unsigned char **out, DSA *dsa, int ispub);
434 static int do_i2b(unsigned char **out, const EVP_PKEY *pk, int ispub)
437 unsigned int bitlen, magic = 0, keyalg;
438 int outlen, noinc = 0;
439 int pktype = EVP_PKEY_id(pk);
440 if (pktype == EVP_PKEY_DSA) {
441 bitlen = check_bitlen_dsa(EVP_PKEY_get0_DSA(pk), ispub, &magic);
442 keyalg = MS_KEYALG_DSS_SIGN;
443 } else if (pktype == EVP_PKEY_RSA) {
444 bitlen = check_bitlen_rsa(EVP_PKEY_get0_RSA(pk), ispub, &magic);
445 keyalg = MS_KEYALG_RSA_KEYX;
450 outlen = 16 + blob_length(bitlen,
451 keyalg == MS_KEYALG_DSS_SIGN ? 1 : 0, ispub);
457 if ((p = OPENSSL_malloc(outlen)) == NULL) {
458 PEMerr(PEM_F_DO_I2B, ERR_R_MALLOC_FAILURE);
465 *p++ = MS_PUBLICKEYBLOB;
467 *p++ = MS_PRIVATEKEYBLOB;
471 write_ledword(&p, keyalg);
472 write_ledword(&p, magic);
473 write_ledword(&p, bitlen);
474 if (keyalg == MS_KEYALG_DSS_SIGN)
475 write_dsa(&p, EVP_PKEY_get0_DSA(pk), ispub);
477 write_rsa(&p, EVP_PKEY_get0_RSA(pk), ispub);
483 static int do_i2b_bio(BIO *out, const EVP_PKEY *pk, int ispub)
485 unsigned char *tmp = NULL;
487 outlen = do_i2b(&tmp, pk, ispub);
490 wrlen = BIO_write(out, tmp, outlen);
497 static int check_bitlen_dsa(DSA *dsa, int ispub, unsigned int *pmagic)
500 const BIGNUM *p = NULL, *q = NULL, *g = NULL;
501 const BIGNUM *pub_key = NULL, *priv_key = NULL;
503 DSA_get0_pqg(dsa, &p, &q, &g);
504 DSA_get0_key(dsa, &pub_key, &priv_key);
505 bitlen = BN_num_bits(p);
506 if ((bitlen & 7) || (BN_num_bits(q) != 160)
507 || (BN_num_bits(g) > bitlen))
510 if (BN_num_bits(pub_key) > bitlen)
512 *pmagic = MS_DSS1MAGIC;
514 if (BN_num_bits(priv_key) > 160)
516 *pmagic = MS_DSS2MAGIC;
521 PEMerr(PEM_F_CHECK_BITLEN_DSA, PEM_R_UNSUPPORTED_KEY_COMPONENTS);
525 static int check_bitlen_rsa(RSA *rsa, int ispub, unsigned int *pmagic)
527 int nbyte, hnbyte, bitlen;
530 RSA_get0_key(rsa, NULL, &e, NULL);
531 if (BN_num_bits(e) > 32)
533 bitlen = RSA_bits(rsa);
534 nbyte = RSA_size(rsa);
535 hnbyte = (bitlen + 15) >> 4;
537 *pmagic = MS_RSA1MAGIC;
540 const BIGNUM *d, *p, *q, *iqmp, *dmp1, *dmq1;
542 *pmagic = MS_RSA2MAGIC;
545 * For private key each component must fit within nbyte or hnbyte.
547 RSA_get0_key(rsa, NULL, NULL, &d);
548 if (BN_num_bytes(d) > nbyte)
550 RSA_get0_factors(rsa, &p, &q);
551 RSA_get0_crt_params(rsa, &dmp1, &dmq1, &iqmp);
552 if ((BN_num_bytes(iqmp) > hnbyte)
553 || (BN_num_bytes(p) > hnbyte)
554 || (BN_num_bytes(q) > hnbyte)
555 || (BN_num_bytes(dmp1) > hnbyte)
556 || (BN_num_bytes(dmq1) > hnbyte))
561 PEMerr(PEM_F_CHECK_BITLEN_RSA, PEM_R_UNSUPPORTED_KEY_COMPONENTS);
565 static void write_rsa(unsigned char **out, RSA *rsa, int ispub)
568 const BIGNUM *n, *d, *e, *p, *q, *iqmp, *dmp1, *dmq1;
570 nbyte = RSA_size(rsa);
571 hnbyte = (RSA_bits(rsa) + 15) >> 4;
572 RSA_get0_key(rsa, &n, &e, &d);
573 write_lebn(out, e, 4);
574 write_lebn(out, n, nbyte);
577 RSA_get0_factors(rsa, &p, &q);
578 RSA_get0_crt_params(rsa, &dmp1, &dmq1, &iqmp);
579 write_lebn(out, p, hnbyte);
580 write_lebn(out, q, hnbyte);
581 write_lebn(out, dmp1, hnbyte);
582 write_lebn(out, dmq1, hnbyte);
583 write_lebn(out, iqmp, hnbyte);
584 write_lebn(out, d, nbyte);
587 static void write_dsa(unsigned char **out, DSA *dsa, int ispub)
590 const BIGNUM *p = NULL, *q = NULL, *g = NULL;
591 const BIGNUM *pub_key = NULL, *priv_key = NULL;
593 DSA_get0_pqg(dsa, &p, &q, &g);
594 DSA_get0_key(dsa, &pub_key, &priv_key);
595 nbyte = BN_num_bytes(p);
596 write_lebn(out, p, nbyte);
597 write_lebn(out, q, 20);
598 write_lebn(out, g, nbyte);
600 write_lebn(out, pub_key, nbyte);
602 write_lebn(out, priv_key, 20);
603 /* Set "invalid" for seed structure values */
604 memset(*out, 0xff, 24);
609 int i2b_PrivateKey_bio(BIO *out, const EVP_PKEY *pk)
611 return do_i2b_bio(out, pk, 0);
614 int i2b_PublicKey_bio(BIO *out, const EVP_PKEY *pk)
616 return do_i2b_bio(out, pk, 1);
619 # ifndef OPENSSL_NO_RC4
621 int ossl_do_PVK_header(const unsigned char **in, unsigned int length,
623 unsigned int *psaltlen, unsigned int *pkeylen)
625 const unsigned char *p = *in;
626 unsigned int pvk_magic, is_encrypted;
630 PEMerr(PEM_F_OSSL_DO_PVK_HEADER, PEM_R_PVK_TOO_SHORT);
635 PEMerr(PEM_F_OSSL_DO_PVK_HEADER, PEM_R_PVK_TOO_SHORT);
638 pvk_magic = read_ledword(&p);
639 if (pvk_magic != MS_PVKMAGIC) {
640 PEMerr(PEM_F_OSSL_DO_PVK_HEADER, PEM_R_BAD_MAGIC_NUMBER);
649 is_encrypted = read_ledword(&p);
650 *psaltlen = read_ledword(&p);
651 *pkeylen = read_ledword(&p);
653 if (*pkeylen > PVK_MAX_KEYLEN || *psaltlen > PVK_MAX_SALTLEN)
656 if (is_encrypted && *psaltlen == 0) {
657 PEMerr(PEM_F_OSSL_DO_PVK_HEADER, PEM_R_INCONSISTENT_HEADER);
665 static int derive_pvk_key(unsigned char *key,
666 const unsigned char *salt, unsigned int saltlen,
667 const unsigned char *pass, int passlen)
669 EVP_MD_CTX *mctx = EVP_MD_CTX_new();
672 || !EVP_DigestInit_ex(mctx, EVP_sha1(), NULL)
673 || !EVP_DigestUpdate(mctx, salt, saltlen)
674 || !EVP_DigestUpdate(mctx, pass, passlen)
675 || !EVP_DigestFinal_ex(mctx, key, NULL))
678 EVP_MD_CTX_free(mctx);
682 static EVP_PKEY *do_PVK_body(const unsigned char **in,
683 unsigned int saltlen, unsigned int keylen,
684 pem_password_cb *cb, void *u)
686 EVP_PKEY *ret = NULL;
687 const unsigned char *p = *in;
689 unsigned char *enctmp = NULL, *q;
690 unsigned char keybuf[20];
692 EVP_CIPHER_CTX *cctx = EVP_CIPHER_CTX_new();
694 char psbuf[PEM_BUFSIZE];
695 int enctmplen, inlen;
697 inlen = cb(psbuf, PEM_BUFSIZE, 0, u);
699 inlen = PEM_def_callback(psbuf, PEM_BUFSIZE, 0, u);
701 PEMerr(PEM_F_DO_PVK_BODY, PEM_R_BAD_PASSWORD_READ);
704 enctmp = OPENSSL_malloc(keylen + 8);
705 if (enctmp == NULL) {
706 PEMerr(PEM_F_DO_PVK_BODY, ERR_R_MALLOC_FAILURE);
709 if (!derive_pvk_key(keybuf, p, saltlen,
710 (unsigned char *)psbuf, inlen))
713 /* Copy BLOBHEADER across, decrypt rest */
714 memcpy(enctmp, p, 8);
717 PEMerr(PEM_F_DO_PVK_BODY, PEM_R_PVK_TOO_SHORT);
722 if (!EVP_DecryptInit_ex(cctx, EVP_rc4(), NULL, keybuf, NULL))
724 if (!EVP_DecryptUpdate(cctx, q, &enctmplen, p, inlen))
726 if (!EVP_DecryptFinal_ex(cctx, q + enctmplen, &enctmplen))
728 magic = read_ledword((const unsigned char **)&q);
729 if (magic != MS_RSA2MAGIC && magic != MS_DSS2MAGIC) {
731 memset(keybuf + 5, 0, 11);
732 if (!EVP_DecryptInit_ex(cctx, EVP_rc4(), NULL, keybuf, NULL))
734 if (!EVP_DecryptUpdate(cctx, q, &enctmplen, p, inlen))
736 if (!EVP_DecryptFinal_ex(cctx, q + enctmplen, &enctmplen))
738 magic = read_ledword((const unsigned char **)&q);
739 if (magic != MS_RSA2MAGIC && magic != MS_DSS2MAGIC) {
740 PEMerr(PEM_F_DO_PVK_BODY, PEM_R_BAD_DECRYPT);
747 ret = b2i_PrivateKey(&p, keylen);
749 EVP_CIPHER_CTX_free(cctx);
750 if (enctmp != NULL) {
751 OPENSSL_cleanse(keybuf, sizeof(keybuf));
752 OPENSSL_free(enctmp);
757 EVP_PKEY *b2i_PVK_bio(BIO *in, pem_password_cb *cb, void *u)
759 unsigned char pvk_hdr[24], *buf = NULL;
760 const unsigned char *p;
762 EVP_PKEY *ret = NULL;
763 unsigned int saltlen, keylen;
764 if (BIO_read(in, pvk_hdr, 24) != 24) {
765 PEMerr(PEM_F_B2I_PVK_BIO, PEM_R_PVK_DATA_TOO_SHORT);
770 if (!ossl_do_PVK_header(&p, 24, 0, &saltlen, &keylen))
772 buflen = (int)keylen + saltlen;
773 buf = OPENSSL_malloc(buflen);
775 PEMerr(PEM_F_B2I_PVK_BIO, ERR_R_MALLOC_FAILURE);
779 if (BIO_read(in, buf, buflen) != buflen) {
780 PEMerr(PEM_F_B2I_PVK_BIO, PEM_R_PVK_DATA_TOO_SHORT);
783 ret = do_PVK_body(&p, saltlen, keylen, cb, u);
786 OPENSSL_clear_free(buf, buflen);
790 static int i2b_PVK(unsigned char **out, const EVP_PKEY *pk, int enclevel,
791 pem_password_cb *cb, void *u)
793 int outlen = 24, pklen;
794 unsigned char *p = NULL, *start = NULL, *salt = NULL;
795 EVP_CIPHER_CTX *cctx = NULL;
797 outlen += PVK_SALTLEN;
798 pklen = do_i2b(NULL, pk, 0);
807 start = p = OPENSSL_malloc(outlen);
809 PEMerr(PEM_F_I2B_PVK, ERR_R_MALLOC_FAILURE);
814 cctx = EVP_CIPHER_CTX_new();
818 write_ledword(&p, MS_PVKMAGIC);
819 write_ledword(&p, 0);
820 if (EVP_PKEY_id(pk) == EVP_PKEY_DSA)
821 write_ledword(&p, MS_KEYTYPE_SIGN);
823 write_ledword(&p, MS_KEYTYPE_KEYX);
824 write_ledword(&p, enclevel ? 1 : 0);
825 write_ledword(&p, enclevel ? PVK_SALTLEN : 0);
826 write_ledword(&p, pklen);
828 if (RAND_bytes(p, PVK_SALTLEN) <= 0)
835 char psbuf[PEM_BUFSIZE];
836 unsigned char keybuf[20];
837 int enctmplen, inlen;
839 inlen = cb(psbuf, PEM_BUFSIZE, 1, u);
841 inlen = PEM_def_callback(psbuf, PEM_BUFSIZE, 1, u);
843 PEMerr(PEM_F_I2B_PVK, PEM_R_BAD_PASSWORD_READ);
846 if (!derive_pvk_key(keybuf, salt, PVK_SALTLEN,
847 (unsigned char *)psbuf, inlen))
850 memset(keybuf + 5, 0, 11);
851 p = salt + PVK_SALTLEN + 8;
852 if (!EVP_EncryptInit_ex(cctx, EVP_rc4(), NULL, keybuf, NULL))
854 OPENSSL_cleanse(keybuf, 20);
855 if (!EVP_DecryptUpdate(cctx, p, &enctmplen, p, pklen - 8))
857 if (!EVP_DecryptFinal_ex(cctx, p + enctmplen, &enctmplen))
861 EVP_CIPHER_CTX_free(cctx);
869 EVP_CIPHER_CTX_free(cctx);
875 int i2b_PVK_bio(BIO *out, const EVP_PKEY *pk, int enclevel,
876 pem_password_cb *cb, void *u)
878 unsigned char *tmp = NULL;
880 outlen = i2b_PVK(&tmp, pk, enclevel, cb, u);
883 wrlen = BIO_write(out, tmp, outlen);
885 if (wrlen == outlen) {
888 PEMerr(PEM_F_I2B_PVK_BIO, PEM_R_BIO_WRITE_FAILURE);