diff options
Diffstat (limited to 'openssl/crypto/pem/pvkfmt.c')
| -rw-r--r-- | openssl/crypto/pem/pvkfmt.c | 1566 |
1 files changed, 747 insertions, 819 deletions
diff --git a/openssl/crypto/pem/pvkfmt.c b/openssl/crypto/pem/pvkfmt.c index ae89f8281..ee4b6a824 100644 --- a/openssl/crypto/pem/pvkfmt.c +++ b/openssl/crypto/pem/pvkfmt.c @@ -1,5 +1,6 @@ -/* Written by Dr Stephen N Henson (steve@openssl.org) 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. @@ -9,7 +10,7 @@ * 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 @@ -55,7 +56,8 @@ * */ -/* Support for PVK format keys and related structures (such a PUBLICKEYBLOB +/* + * Support for PVK format keys and related structures (such a PUBLICKEYBLOB * and PRIVATEKEYBLOB). */ @@ -64,892 +66,818 @@ #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> +# 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) + 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) { + 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; +} 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 || !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; +} 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 || !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; +} 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 = 0, 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; + 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; +} 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 +# 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, 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; - 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)) - rv = 0; - - EVP_MD_CTX_cleanup(&mctx); - return rv; - } - + 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; + } + 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; + 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)) + rv = 0; + + EVP_MD_CTX_cleanup(&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; - EVP_CIPHER_CTX cctx; - EVP_CIPHER_CTX_init(&cctx); - 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); - 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; - if (keylen < 8) - { - PEMerr(PEM_F_DO_PVK_BODY, PEM_R_PVK_TOO_SHORT); - return NULL; - } - 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_cleanup(&cctx); - 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_init(&cctx); + 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); + 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; + if (keylen < 8) { + PEMerr(PEM_F_DO_PVK_BODY, PEM_R_PVK_TOO_SHORT); + return NULL; + } + 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_cleanup(&cctx); + if (enctmp && saltlen) + 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, pklen; - unsigned char *p, *salt = NULL; - EVP_CIPHER_CTX cctx; - EVP_CIPHER_CTX_init(&cctx); - 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) - { - PEMerr(PEM_F_I2B_PVK,ERR_R_MALLOC_FAILURE); - return -1; - } - *out = p; - } - - 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]; - 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_cleanup(&cctx); - return outlen; - - error: - EVP_CIPHER_CTX_cleanup(&cctx); - 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) { + 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, pklen; + unsigned char *p, *salt = NULL; + EVP_CIPHER_CTX cctx; + EVP_CIPHER_CTX_init(&cctx); + 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) { + PEMerr(PEM_F_I2B_PVK, ERR_R_MALLOC_FAILURE); + return -1; + } + *out = p; + } + + 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]; + 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_cleanup(&cctx); + return outlen; + + error: + EVP_CIPHER_CTX_cleanup(&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; - } - -#endif + 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 |