diff options
Diffstat (limited to 'openssl-1.1.0h/crypto/pkcs12/p12_kiss.c')
| -rw-r--r-- | openssl-1.1.0h/crypto/pkcs12/p12_kiss.c | 250 |
1 files changed, 250 insertions, 0 deletions
diff --git a/openssl-1.1.0h/crypto/pkcs12/p12_kiss.c b/openssl-1.1.0h/crypto/pkcs12/p12_kiss.c new file mode 100644 index 0000000..7ab9838 --- /dev/null +++ b/openssl-1.1.0h/crypto/pkcs12/p12_kiss.c @@ -0,0 +1,250 @@ +/* + * Copyright 1999-2016 The OpenSSL Project Authors. All Rights Reserved. + * + * Licensed under the OpenSSL license (the "License"). You may not use + * this file except in compliance with the License. You can obtain a copy + * in the file LICENSE in the source distribution or at + * https://www.openssl.org/source/license.html + */ + +#include <stdio.h> +#include "internal/cryptlib.h" +#include <openssl/pkcs12.h> + +/* Simplified PKCS#12 routines */ + +static int parse_pk12(PKCS12 *p12, const char *pass, int passlen, + EVP_PKEY **pkey, STACK_OF(X509) *ocerts); + +static int parse_bags(const STACK_OF(PKCS12_SAFEBAG) *bags, const char *pass, + int passlen, EVP_PKEY **pkey, STACK_OF(X509) *ocerts); + +static int parse_bag(PKCS12_SAFEBAG *bag, const char *pass, int passlen, + EVP_PKEY **pkey, STACK_OF(X509) *ocerts); + +/* + * Parse and decrypt a PKCS#12 structure returning user key, user cert and + * other (CA) certs. Note either ca should be NULL, *ca should be NULL, or it + * should point to a valid STACK structure. pkey and cert can be passed + * uninitialised. + */ + +int PKCS12_parse(PKCS12 *p12, const char *pass, EVP_PKEY **pkey, X509 **cert, + STACK_OF(X509) **ca) +{ + STACK_OF(X509) *ocerts = NULL; + X509 *x = NULL; + + if (pkey) + *pkey = NULL; + if (cert) + *cert = NULL; + + /* Check for NULL PKCS12 structure */ + + if (!p12) { + PKCS12err(PKCS12_F_PKCS12_PARSE, + PKCS12_R_INVALID_NULL_PKCS12_POINTER); + return 0; + } + + /* Check the mac */ + + /* + * If password is zero length or NULL then try verifying both cases to + * determine which password is correct. The reason for this is that under + * PKCS#12 password based encryption no password and a zero length + * password are two different things... + */ + + if (!pass || !*pass) { + if (PKCS12_verify_mac(p12, NULL, 0)) + pass = NULL; + else if (PKCS12_verify_mac(p12, "", 0)) + pass = ""; + else { + PKCS12err(PKCS12_F_PKCS12_PARSE, PKCS12_R_MAC_VERIFY_FAILURE); + goto err; + } + } else if (!PKCS12_verify_mac(p12, pass, -1)) { + PKCS12err(PKCS12_F_PKCS12_PARSE, PKCS12_R_MAC_VERIFY_FAILURE); + goto err; + } + + /* Allocate stack for other certificates */ + ocerts = sk_X509_new_null(); + + if (!ocerts) { + PKCS12err(PKCS12_F_PKCS12_PARSE, ERR_R_MALLOC_FAILURE); + goto err; + } + + if (!parse_pk12(p12, pass, -1, pkey, ocerts)) { + PKCS12err(PKCS12_F_PKCS12_PARSE, PKCS12_R_PARSE_ERROR); + goto err; + } + + while ((x = sk_X509_pop(ocerts))) { + if (pkey && *pkey && cert && !*cert) { + ERR_set_mark(); + if (X509_check_private_key(x, *pkey)) { + *cert = x; + x = NULL; + } + ERR_pop_to_mark(); + } + + if (ca && x) { + if (!*ca) + *ca = sk_X509_new_null(); + if (!*ca) + goto err; + if (!sk_X509_push(*ca, x)) + goto err; + x = NULL; + } + X509_free(x); + } + + sk_X509_pop_free(ocerts, X509_free); + + return 1; + + err: + + if (pkey) { + EVP_PKEY_free(*pkey); + *pkey = NULL; + } + if (cert) { + X509_free(*cert); + *cert = NULL; + } + X509_free(x); + sk_X509_pop_free(ocerts, X509_free); + return 0; + +} + +/* Parse the outer PKCS#12 structure */ + +static int parse_pk12(PKCS12 *p12, const char *pass, int passlen, + EVP_PKEY **pkey, STACK_OF(X509) *ocerts) +{ + STACK_OF(PKCS7) *asafes; + STACK_OF(PKCS12_SAFEBAG) *bags; + int i, bagnid; + PKCS7 *p7; + + if ((asafes = PKCS12_unpack_authsafes(p12)) == NULL) + return 0; + for (i = 0; i < sk_PKCS7_num(asafes); i++) { + p7 = sk_PKCS7_value(asafes, i); + bagnid = OBJ_obj2nid(p7->type); + if (bagnid == NID_pkcs7_data) { + bags = PKCS12_unpack_p7data(p7); + } else if (bagnid == NID_pkcs7_encrypted) { + bags = PKCS12_unpack_p7encdata(p7, pass, passlen); + } else + continue; + if (!bags) { + sk_PKCS7_pop_free(asafes, PKCS7_free); + return 0; + } + if (!parse_bags(bags, pass, passlen, pkey, ocerts)) { + sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free); + sk_PKCS7_pop_free(asafes, PKCS7_free); + return 0; + } + sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free); + } + sk_PKCS7_pop_free(asafes, PKCS7_free); + return 1; +} + +static int parse_bags(const STACK_OF(PKCS12_SAFEBAG) *bags, const char *pass, + int passlen, EVP_PKEY **pkey, STACK_OF(X509) *ocerts) +{ + int i; + for (i = 0; i < sk_PKCS12_SAFEBAG_num(bags); i++) { + if (!parse_bag(sk_PKCS12_SAFEBAG_value(bags, i), + pass, passlen, pkey, ocerts)) + return 0; + } + return 1; +} + +static int parse_bag(PKCS12_SAFEBAG *bag, const char *pass, int passlen, + EVP_PKEY **pkey, STACK_OF(X509) *ocerts) +{ + PKCS8_PRIV_KEY_INFO *p8; + X509 *x509; + const ASN1_TYPE *attrib; + ASN1_BMPSTRING *fname = NULL; + ASN1_OCTET_STRING *lkid = NULL; + + if ((attrib = PKCS12_SAFEBAG_get0_attr(bag, NID_friendlyName))) + fname = attrib->value.bmpstring; + + if ((attrib = PKCS12_SAFEBAG_get0_attr(bag, NID_localKeyID))) + lkid = attrib->value.octet_string; + + switch (PKCS12_SAFEBAG_get_nid(bag)) { + case NID_keyBag: + if (!pkey || *pkey) + return 1; + *pkey = EVP_PKCS82PKEY(PKCS12_SAFEBAG_get0_p8inf(bag)); + if (*pkey == NULL) + return 0; + break; + + case NID_pkcs8ShroudedKeyBag: + if (!pkey || *pkey) + return 1; + if ((p8 = PKCS12_decrypt_skey(bag, pass, passlen)) == NULL) + return 0; + *pkey = EVP_PKCS82PKEY(p8); + PKCS8_PRIV_KEY_INFO_free(p8); + if (!(*pkey)) + return 0; + break; + + case NID_certBag: + if (PKCS12_SAFEBAG_get_bag_nid(bag) != NID_x509Certificate) + return 1; + if ((x509 = PKCS12_SAFEBAG_get1_cert(bag)) == NULL) + return 0; + if (lkid && !X509_keyid_set1(x509, lkid->data, lkid->length)) { + X509_free(x509); + return 0; + } + if (fname) { + int len, r; + unsigned char *data; + len = ASN1_STRING_to_UTF8(&data, fname); + if (len >= 0) { + r = X509_alias_set1(x509, data, len); + OPENSSL_free(data); + if (!r) { + X509_free(x509); + return 0; + } + } + } + + if (!sk_X509_push(ocerts, x509)) { + X509_free(x509); + return 0; + } + + break; + + case NID_safeContentsBag: + return parse_bags(PKCS12_SAFEBAG_get0_safes(bag), pass, passlen, pkey, + ocerts); + + default: + return 1; + } + return 1; +} |