| /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
| * All rights reserved. |
| * |
| * This package is an SSL implementation written |
| * by Eric Young (eay@cryptsoft.com). |
| * The implementation was written so as to conform with Netscapes SSL. |
| * |
| * This library is free for commercial and non-commercial use as long as |
| * the following conditions are aheared to. The following conditions |
| * apply to all code found in this distribution, be it the RC4, RSA, |
| * lhash, DES, etc., code; not just the SSL code. The SSL documentation |
| * included with this distribution is covered by the same copyright terms |
| * except that the holder is Tim Hudson (tjh@cryptsoft.com). |
| * |
| * Copyright remains Eric Young's, and as such any Copyright notices in |
| * the code are not to be removed. |
| * If this package is used in a product, Eric Young should be given attribution |
| * as the author of the parts of the library used. |
| * This can be in the form of a textual message at program startup or |
| * in documentation (online or textual) provided with the package. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the copyright |
| * 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 the |
| * documentation and/or other materials provided with the distribution. |
| * 3. All advertising materials mentioning features or use of this software |
| * must display the following acknowledgement: |
| * "This product includes cryptographic software written by |
| * Eric Young (eay@cryptsoft.com)" |
| * The word 'cryptographic' can be left out if the rouines from the library |
| * being used are not cryptographic related :-). |
| * 4. If you include any Windows specific code (or a derivative thereof) from |
| * the apps directory (application code) you must include an acknowledgement: |
| * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" |
| * |
| * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * |
| * The licence and distribution terms for any publically available version or |
| * derivative of this code cannot be changed. i.e. this code cannot simply be |
| * copied and put under another distribution licence |
| * [including the GNU Public Licence.] */ |
| |
| #include <openssl/asn1.h> |
| #include <openssl/asn1t.h> |
| #include <openssl/err.h> |
| #include <openssl/evp.h> |
| #include <openssl/mem.h> |
| #include <openssl/obj.h> |
| #include <openssl/thread.h> |
| #include <openssl/x509.h> |
| |
| #include "../evp/internal.h" |
| #include "../internal.h" |
| |
| |
| /* Minor tweak to operation: free up EVP_PKEY */ |
| static int pubkey_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, |
| void *exarg) |
| { |
| if (operation == ASN1_OP_FREE_POST) |
| { |
| X509_PUBKEY *pubkey = (X509_PUBKEY *)*pval; |
| EVP_PKEY_free(pubkey->pkey); |
| } |
| return 1; |
| } |
| |
| ASN1_SEQUENCE_cb(X509_PUBKEY, pubkey_cb) = { |
| ASN1_SIMPLE(X509_PUBKEY, algor, X509_ALGOR), |
| ASN1_SIMPLE(X509_PUBKEY, public_key, ASN1_BIT_STRING) |
| } ASN1_SEQUENCE_END_cb(X509_PUBKEY, X509_PUBKEY) |
| |
| IMPLEMENT_ASN1_FUNCTIONS(X509_PUBKEY) |
| |
| int X509_PUBKEY_set(X509_PUBKEY **x, EVP_PKEY *pkey) |
| { |
| X509_PUBKEY *pk=NULL; |
| |
| if (x == NULL) return(0); |
| |
| if ((pk=X509_PUBKEY_new()) == NULL) goto error; |
| |
| if (pkey->ameth) |
| { |
| if (pkey->ameth->pub_encode) |
| { |
| if (!pkey->ameth->pub_encode(pk, pkey)) |
| { |
| OPENSSL_PUT_ERROR(X509, X509_R_PUBLIC_KEY_ENCODE_ERROR); |
| goto error; |
| } |
| } |
| else |
| { |
| OPENSSL_PUT_ERROR(X509, X509_R_METHOD_NOT_SUPPORTED); |
| goto error; |
| } |
| } |
| else |
| { |
| OPENSSL_PUT_ERROR(X509, X509_R_UNSUPPORTED_ALGORITHM); |
| goto error; |
| } |
| |
| if (*x != NULL) |
| X509_PUBKEY_free(*x); |
| |
| *x=pk; |
| |
| return 1; |
| error: |
| if (pk != NULL) X509_PUBKEY_free(pk); |
| return 0; |
| } |
| |
| /* g_pubkey_lock is used to protect the initialisation of the |pkey| member of |
| * |X509_PUBKEY| objects. Really |X509_PUBKEY| should have a |CRYPTO_once_t| |
| * inside it for this, but |CRYPTO_once_t| is private and |X509_PUBKEY| is |
| * not. */ |
| static struct CRYPTO_STATIC_MUTEX g_pubkey_lock = CRYPTO_STATIC_MUTEX_INIT; |
| |
| EVP_PKEY *X509_PUBKEY_get(X509_PUBKEY *key) |
| { |
| EVP_PKEY *ret=NULL; |
| |
| if (key == NULL) goto error; |
| |
| CRYPTO_STATIC_MUTEX_lock_read(&g_pubkey_lock); |
| if (key->pkey != NULL) |
| { |
| CRYPTO_STATIC_MUTEX_unlock(&g_pubkey_lock); |
| return EVP_PKEY_up_ref(key->pkey); |
| } |
| CRYPTO_STATIC_MUTEX_unlock(&g_pubkey_lock); |
| |
| if (key->public_key == NULL) goto error; |
| |
| if ((ret = EVP_PKEY_new()) == NULL) |
| { |
| OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE); |
| goto error; |
| } |
| |
| if (!EVP_PKEY_set_type(ret, OBJ_obj2nid(key->algor->algorithm))) |
| { |
| OPENSSL_PUT_ERROR(X509, X509_R_UNSUPPORTED_ALGORITHM); |
| goto error; |
| } |
| |
| if (ret->ameth->pub_decode) |
| { |
| if (!ret->ameth->pub_decode(ret, key)) |
| { |
| OPENSSL_PUT_ERROR(X509, X509_R_PUBLIC_KEY_DECODE_ERROR); |
| goto error; |
| } |
| } |
| else |
| { |
| OPENSSL_PUT_ERROR(X509, X509_R_METHOD_NOT_SUPPORTED); |
| goto error; |
| } |
| |
| /* Check to see if another thread set key->pkey first */ |
| CRYPTO_STATIC_MUTEX_lock_write(&g_pubkey_lock); |
| if (key->pkey) |
| { |
| CRYPTO_STATIC_MUTEX_unlock(&g_pubkey_lock); |
| EVP_PKEY_free(ret); |
| ret = key->pkey; |
| } |
| else |
| { |
| key->pkey = ret; |
| CRYPTO_STATIC_MUTEX_unlock(&g_pubkey_lock); |
| } |
| |
| return EVP_PKEY_up_ref(ret); |
| |
| error: |
| if (ret != NULL) |
| EVP_PKEY_free(ret); |
| return(NULL); |
| } |
| |
| /* Now two pseudo ASN1 routines that take an EVP_PKEY structure |
| * and encode or decode as X509_PUBKEY |
| */ |
| |
| EVP_PKEY *d2i_PUBKEY(EVP_PKEY **a, const unsigned char **pp, |
| long length) |
| { |
| X509_PUBKEY *xpk; |
| EVP_PKEY *pktmp; |
| xpk = d2i_X509_PUBKEY(NULL, pp, length); |
| if(!xpk) return NULL; |
| pktmp = X509_PUBKEY_get(xpk); |
| X509_PUBKEY_free(xpk); |
| if(!pktmp) return NULL; |
| if(a) |
| { |
| EVP_PKEY_free(*a); |
| *a = pktmp; |
| } |
| return pktmp; |
| } |
| |
| int i2d_PUBKEY(const EVP_PKEY *a, unsigned char **pp) |
| { |
| X509_PUBKEY *xpk=NULL; |
| int ret; |
| if(!a) return 0; |
| if(!X509_PUBKEY_set(&xpk, (EVP_PKEY*) a)) return 0; |
| ret = i2d_X509_PUBKEY(xpk, pp); |
| X509_PUBKEY_free(xpk); |
| return ret; |
| } |
| |
| /* The following are equivalents but which return RSA and DSA |
| * keys |
| */ |
| RSA *d2i_RSA_PUBKEY(RSA **a, const unsigned char **pp, |
| long length) |
| { |
| EVP_PKEY *pkey; |
| RSA *key; |
| const unsigned char *q; |
| q = *pp; |
| pkey = d2i_PUBKEY(NULL, &q, length); |
| if (!pkey) return NULL; |
| key = EVP_PKEY_get1_RSA(pkey); |
| EVP_PKEY_free(pkey); |
| if (!key) return NULL; |
| *pp = q; |
| if (a) |
| { |
| RSA_free(*a); |
| *a = key; |
| } |
| return key; |
| } |
| |
| int i2d_RSA_PUBKEY(const RSA *a, unsigned char **pp) |
| { |
| EVP_PKEY *pktmp; |
| int ret; |
| if (!a) return 0; |
| pktmp = EVP_PKEY_new(); |
| if (!pktmp) |
| { |
| OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE); |
| return 0; |
| } |
| EVP_PKEY_set1_RSA(pktmp, (RSA*) a); |
| ret = i2d_PUBKEY(pktmp, pp); |
| EVP_PKEY_free(pktmp); |
| return ret; |
| } |
| |
| #ifndef OPENSSL_NO_DSA |
| DSA *d2i_DSA_PUBKEY(DSA **a, const unsigned char **pp, |
| long length) |
| { |
| EVP_PKEY *pkey; |
| DSA *key; |
| const unsigned char *q; |
| q = *pp; |
| pkey = d2i_PUBKEY(NULL, &q, length); |
| if (!pkey) return NULL; |
| key = EVP_PKEY_get1_DSA(pkey); |
| EVP_PKEY_free(pkey); |
| if (!key) return NULL; |
| *pp = q; |
| if (a) |
| { |
| DSA_free(*a); |
| *a = key; |
| } |
| return key; |
| } |
| |
| int i2d_DSA_PUBKEY(const DSA *a, unsigned char **pp) |
| { |
| EVP_PKEY *pktmp; |
| int ret; |
| if(!a) return 0; |
| pktmp = EVP_PKEY_new(); |
| if(!pktmp) |
| { |
| OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE); |
| return 0; |
| } |
| EVP_PKEY_set1_DSA(pktmp, (DSA*) a); |
| ret = i2d_PUBKEY(pktmp, pp); |
| EVP_PKEY_free(pktmp); |
| return ret; |
| } |
| #endif |
| |
| EC_KEY *d2i_EC_PUBKEY(EC_KEY **a, const unsigned char **pp, long length) |
| { |
| EVP_PKEY *pkey; |
| EC_KEY *key; |
| const unsigned char *q; |
| q = *pp; |
| pkey = d2i_PUBKEY(NULL, &q, length); |
| if (!pkey) return(NULL); |
| key = EVP_PKEY_get1_EC_KEY(pkey); |
| EVP_PKEY_free(pkey); |
| if (!key) return(NULL); |
| *pp = q; |
| if (a) |
| { |
| EC_KEY_free(*a); |
| *a = key; |
| } |
| return(key); |
| } |
| |
| int i2d_EC_PUBKEY(const EC_KEY *a, unsigned char **pp) |
| { |
| EVP_PKEY *pktmp; |
| int ret; |
| if (!a) return(0); |
| if ((pktmp = EVP_PKEY_new()) == NULL) |
| { |
| OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE); |
| return(0); |
| } |
| EVP_PKEY_set1_EC_KEY(pktmp, (EC_KEY*) a); |
| ret = i2d_PUBKEY(pktmp, pp); |
| EVP_PKEY_free(pktmp); |
| return(ret); |
| } |
| |
| int X509_PUBKEY_set0_param(X509_PUBKEY *pub, const ASN1_OBJECT *aobj, |
| int ptype, void *pval, |
| unsigned char *penc, int penclen) |
| { |
| if (!X509_ALGOR_set0(pub->algor, aobj, ptype, pval)) |
| return 0; |
| if (penc) |
| { |
| if (pub->public_key->data) |
| OPENSSL_free(pub->public_key->data); |
| pub->public_key->data = penc; |
| pub->public_key->length = penclen; |
| /* Set number of unused bits to zero */ |
| pub->public_key->flags&= ~(ASN1_STRING_FLAG_BITS_LEFT|0x07); |
| pub->public_key->flags|=ASN1_STRING_FLAG_BITS_LEFT; |
| } |
| return 1; |
| } |
| |
| int X509_PUBKEY_get0_param(ASN1_OBJECT **ppkalg, |
| const unsigned char **pk, int *ppklen, |
| X509_ALGOR **pa, |
| X509_PUBKEY *pub) |
| { |
| if (ppkalg) |
| *ppkalg = pub->algor->algorithm; |
| if (pk) |
| { |
| *pk = pub->public_key->data; |
| *ppklen = pub->public_key->length; |
| } |
| if (pa) |
| *pa = pub->algor; |
| return 1; |
| } |