/* pk7_smime.c */
-/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
- * project 1999.
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project.
*/
/* ====================================================================
- * Copyright (c) 1999 The OpenSSL Project. All rights reserved.
+ * Copyright (c) 1999-2004 The OpenSSL Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
#include <openssl/x509.h>
#include <openssl/x509v3.h>
+static int pkcs7_copy_existing_digest(PKCS7 *p7, PKCS7_SIGNER_INFO *si);
+
PKCS7 *PKCS7_sign(X509 *signcert, EVP_PKEY *pkey, STACK_OF(X509) *certs,
BIO *data, int flags)
{
PKCS7 *p7;
- PKCS7_SIGNER_INFO *si;
- BIO *p7bio;
- STACK_OF(X509_ALGOR) *smcap;
int i;
- if(!X509_check_private_key(signcert, pkey)) {
- PKCS7err(PKCS7_F_PKCS7_SIGN,PKCS7_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE);
- return NULL;
- }
-
- if(!(p7 = PKCS7_new())) {
+ if(!(p7 = PKCS7_new()))
+ {
PKCS7err(PKCS7_F_PKCS7_SIGN,ERR_R_MALLOC_FAILURE);
return NULL;
- }
+ }
- PKCS7_set_type(p7, NID_pkcs7_signed);
+ if (!PKCS7_set_type(p7, NID_pkcs7_signed))
+ goto err;
- PKCS7_content_new(p7, NID_pkcs7_data);
+ if (!PKCS7_content_new(p7, NID_pkcs7_data))
+ goto err;
+
+ if (pkey && !PKCS7_sign_add_signer(p7, signcert, pkey, NULL, flags))
+ {
+ PKCS7err(PKCS7_F_PKCS7_SIGN,PKCS7_R_PKCS7_ADD_SIGNER_ERROR);
+ goto err;
+ }
+
+ if(!(flags & PKCS7_NOCERTS))
+ {
+ for(i = 0; i < sk_X509_num(certs); i++)
+ {
+ if (!PKCS7_add_certificate(p7, sk_X509_value(certs, i)))
+ goto err;
+ }
+ }
+
+ if(flags & PKCS7_DETACHED)
+ PKCS7_set_detached(p7, 1);
+
+ if (flags & (PKCS7_STREAM|PKCS7_PARTIAL))
+ return p7;
+
+ if (PKCS7_final(p7, data, flags))
+ return p7;
+
+ err:
+ PKCS7_free(p7);
+ return NULL;
+}
+
+int PKCS7_final(PKCS7 *p7, BIO *data, int flags)
+ {
+ BIO *p7bio;
+ int ret = 0;
+ if (!(p7bio = PKCS7_dataInit(p7, NULL)))
+ {
+ PKCS7err(PKCS7_F_PKCS7_FINAL,ERR_R_MALLOC_FAILURE);
+ return 0;
+ }
+
+ SMIME_crlf_copy(data, p7bio, flags);
+
+ (void)BIO_flush(p7bio);
+
+
+ if (!PKCS7_dataFinal(p7,p7bio))
+ {
+ PKCS7err(PKCS7_F_PKCS7_FINAL,PKCS7_R_PKCS7_DATASIGN);
+ goto err;
+ }
+
+ ret = 1;
+
+ err:
+ BIO_free_all(p7bio);
+
+ return ret;
- if (!(si = PKCS7_add_signature(p7,signcert,pkey,EVP_sha1()))) {
- PKCS7err(PKCS7_F_PKCS7_SIGN,PKCS7_R_PKCS7_ADD_SIGNATURE_ERROR);
- return NULL;
}
- if(!(flags & PKCS7_NOCERTS)) {
- PKCS7_add_certificate(p7, signcert);
- if(certs) for(i = 0; i < sk_X509_num(certs); i++)
- PKCS7_add_certificate(p7, sk_X509_value(certs, i));
+/* Check to see if a cipher exists and if so add S/MIME capabilities */
+
+static int add_cipher_smcap(STACK_OF(X509_ALGOR) *sk, int nid, int arg)
+ {
+ if (EVP_get_cipherbynid(nid))
+ return PKCS7_simple_smimecap(sk, nid, arg);
+ return 1;
}
- if(!(p7bio = PKCS7_dataInit(p7, NULL))) {
- PKCS7err(PKCS7_F_PKCS7_SIGN,ERR_R_MALLOC_FAILURE);
- return NULL;
+static int add_digest_smcap(STACK_OF(X509_ALGOR) *sk, int nid, int arg)
+ {
+ if (EVP_get_digestbynid(nid))
+ return PKCS7_simple_smimecap(sk, nid, arg);
+ return 1;
}
+PKCS7_SIGNER_INFO *PKCS7_sign_add_signer(PKCS7 *p7, X509 *signcert,
+ EVP_PKEY *pkey, const EVP_MD *md,
+ int flags)
+ {
+ PKCS7_SIGNER_INFO *si = NULL;
+ STACK_OF(X509_ALGOR) *smcap = NULL;
+ if(!X509_check_private_key(signcert, pkey))
+ {
+ PKCS7err(PKCS7_F_PKCS7_SIGN_ADD_SIGNER,
+ PKCS7_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE);
+ return NULL;
+ }
- SMIME_crlf_copy(data, p7bio, flags);
+ if (!(si = PKCS7_add_signature(p7,signcert,pkey, md)))
+ {
+ PKCS7err(PKCS7_F_PKCS7_SIGN_ADD_SIGNER,
+ PKCS7_R_PKCS7_ADD_SIGNATURE_ERROR);
+ return NULL;
+ }
+
+ if(!(flags & PKCS7_NOCERTS))
+ {
+ if (!PKCS7_add_certificate(p7, signcert))
+ goto err;
+ }
- if(!(flags & PKCS7_NOATTR)) {
- PKCS7_add_signed_attribute(si, NID_pkcs9_contentType,
- V_ASN1_OBJECT, OBJ_nid2obj(NID_pkcs7_data));
+ if(!(flags & PKCS7_NOATTR))
+ {
+ if (!PKCS7_add_attrib_content_type(si, NULL))
+ goto err;
/* Add SMIMECapabilities */
if(!(flags & PKCS7_NOSMIMECAP))
- {
- if(!(smcap = sk_X509_ALGOR_new_null())) {
- PKCS7err(PKCS7_F_PKCS7_SIGN,ERR_R_MALLOC_FAILURE);
- return NULL;
+ {
+ if(!(smcap = sk_X509_ALGOR_new_null()))
+ {
+ PKCS7err(PKCS7_F_PKCS7_SIGN_ADD_SIGNER,
+ ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ if (!add_cipher_smcap(smcap, NID_aes_256_cbc, -1)
+ || !add_digest_smcap(smcap, NID_id_GostR3411_94, -1)
+ || !add_cipher_smcap(smcap, NID_id_Gost28147_89, -1)
+ || !add_cipher_smcap(smcap, NID_aes_192_cbc, -1)
+ || !add_cipher_smcap(smcap, NID_aes_128_cbc, -1)
+ || !add_cipher_smcap(smcap, NID_des_ede3_cbc, -1)
+ || !add_cipher_smcap(smcap, NID_rc2_cbc, 128)
+ || !add_cipher_smcap(smcap, NID_rc2_cbc, 64)
+ || !add_cipher_smcap(smcap, NID_des_cbc, -1)
+ || !add_cipher_smcap(smcap, NID_rc2_cbc, 40)
+ || !PKCS7_add_attrib_smimecap (si, smcap))
+ goto err;
+ sk_X509_ALGOR_pop_free(smcap, X509_ALGOR_free);
+ smcap = NULL;
+ }
+ if (flags & PKCS7_REUSE_DIGEST)
+ {
+ if (!pkcs7_copy_existing_digest(p7, si))
+ goto err;
+ if (!(flags & PKCS7_PARTIAL) &&
+ !PKCS7_SIGNER_INFO_sign(si))
+ goto err;
+ }
}
-#ifndef OPENSSL_NO_DES
- PKCS7_simple_smimecap (smcap, NID_des_ede3_cbc, -1);
-#endif
-#ifndef OPENSSL_NO_RC2
- PKCS7_simple_smimecap (smcap, NID_rc2_cbc, 128);
- PKCS7_simple_smimecap (smcap, NID_rc2_cbc, 64);
-#endif
-#ifndef OPENSSL_NO_DES
- PKCS7_simple_smimecap (smcap, NID_des_cbc, -1);
-#endif
-#ifndef OPENSSL_NO_RC2
- PKCS7_simple_smimecap (smcap, NID_rc2_cbc, 40);
-#endif
- PKCS7_add_attrib_smimecap (si, smcap);
+ return si;
+ err:
+ if (smcap)
sk_X509_ALGOR_pop_free(smcap, X509_ALGOR_free);
- }
+ return NULL;
}
- if(flags & PKCS7_DETACHED)PKCS7_set_detached(p7, 1);
+/* Search for a digest matching SignerInfo digest type and if found
+ * copy across.
+ */
- if (!PKCS7_dataFinal(p7,p7bio)) {
- PKCS7err(PKCS7_F_PKCS7_SIGN,PKCS7_R_PKCS7_DATASIGN);
- return NULL;
- }
+static int pkcs7_copy_existing_digest(PKCS7 *p7, PKCS7_SIGNER_INFO *si)
+ {
+ int i;
+ STACK_OF(PKCS7_SIGNER_INFO) *sinfos;
+ PKCS7_SIGNER_INFO *sitmp;
+ ASN1_OCTET_STRING *osdig = NULL;
+ sinfos = PKCS7_get_signer_info(p7);
+ for (i = 0; i < sk_PKCS7_SIGNER_INFO_num(sinfos); i++)
+ {
+ sitmp = sk_PKCS7_SIGNER_INFO_value(sinfos, i);
+ if (si == sitmp)
+ break;
+ if (sk_X509_ATTRIBUTE_num(sitmp->auth_attr) <= 0)
+ continue;
+ if (!OBJ_cmp(si->digest_alg->algorithm,
+ sitmp->digest_alg->algorithm))
+ {
+ osdig = PKCS7_digest_from_attributes(sitmp->auth_attr);
+ break;
+ }
- BIO_free_all(p7bio);
- return p7;
-}
+ }
+
+ if (osdig)
+ return PKCS7_add1_attrib_digest(si, osdig->data, osdig->length);
+
+ PKCS7err(PKCS7_F_PKCS7_COPY_EXISTING_DIGEST,
+ PKCS7_R_NO_MATCHING_DIGEST_TYPE_FOUND);
+ return 0;
+ }
int PKCS7_verify(PKCS7 *p7, STACK_OF(X509) *certs, X509_STORE *store,
BIO *indata, BIO *out, int flags)
char buf[4096];
int i, j=0, k, ret = 0;
BIO *p7bio;
- BIO *tmpout;
+ BIO *tmpin, *tmpout;
if(!p7) {
PKCS7err(PKCS7_F_PKCS7_VERIFY,PKCS7_R_INVALID_NULL_POINTER);
if (!(flags & PKCS7_NOVERIFY)) for (k = 0; k < sk_X509_num(signers); k++) {
signer = sk_X509_value (signers, k);
if (!(flags & PKCS7_NOCHAIN)) {
- X509_STORE_CTX_init(&cert_ctx, store, signer,
- p7->d.sign->cert);
- X509_STORE_CTX_set_purpose(&cert_ctx,
- X509_PURPOSE_SMIME_SIGN);
- } else X509_STORE_CTX_init (&cert_ctx, store, signer, NULL);
+ if(!X509_STORE_CTX_init(&cert_ctx, store, signer,
+ p7->d.sign->cert))
+ {
+ PKCS7err(PKCS7_F_PKCS7_VERIFY,ERR_R_X509_LIB);
+ sk_X509_free(signers);
+ return 0;
+ }
+ X509_STORE_CTX_set_default(&cert_ctx, "smime_sign");
+ } else if(!X509_STORE_CTX_init (&cert_ctx, store, signer, NULL)) {
+ PKCS7err(PKCS7_F_PKCS7_VERIFY,ERR_R_X509_LIB);
+ sk_X509_free(signers);
+ return 0;
+ }
+ if (!(flags & PKCS7_NOCRL))
+ X509_STORE_CTX_set0_crls(&cert_ctx, p7->d.sign->crl);
i = X509_verify_cert(&cert_ctx);
if (i <= 0) j = X509_STORE_CTX_get_error(&cert_ctx);
X509_STORE_CTX_cleanup(&cert_ctx);
/* Check for revocation status here */
}
- p7bio=PKCS7_dataInit(p7,indata);
+ /* Performance optimization: if the content is a memory BIO then
+ * store its contents in a temporary read only memory BIO. This
+ * avoids potentially large numbers of slow copies of data which will
+ * occur when reading from a read write memory BIO when signatures
+ * are calculated.
+ */
+
+ if (indata && (BIO_method_type(indata) == BIO_TYPE_MEM))
+ {
+ char *ptr;
+ long len;
+ len = BIO_get_mem_data(indata, &ptr);
+ tmpin = BIO_new_mem_buf(ptr, len);
+ if (tmpin == NULL)
+ {
+ PKCS7err(PKCS7_F_PKCS7_VERIFY,ERR_R_MALLOC_FAILURE);
+ return 0;
+ }
+ }
+ else
+ tmpin = indata;
+
+
+ if (!(p7bio=PKCS7_dataInit(p7,tmpin)))
+ goto err;
if(flags & PKCS7_TEXT) {
if(!(tmpout = BIO_new(BIO_s_mem()))) {
PKCS7err(PKCS7_F_PKCS7_VERIFY,ERR_R_MALLOC_FAILURE);
goto err;
}
+ BIO_set_mem_eof_return(tmpout, 0);
} else tmpout = out;
/* We now have to 'read' from p7bio to calculate digests etc. */
ret = 1;
err:
-
- if(indata) BIO_pop(p7bio);
+
+ if (tmpin == indata)
+ {
+ if (indata) BIO_pop(p7bio);
+ }
BIO_free_all(p7bio);
+
sk_X509_free(signers);
return ret;
PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS,PKCS7_R_WRONG_CONTENT_TYPE);
return NULL;
}
- if(!(signers = sk_X509_new_null())) {
- PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS,ERR_R_MALLOC_FAILURE);
- return NULL;
- }
/* Collect all the signers together */
return 0;
}
+ if(!(signers = sk_X509_new_null())) {
+ PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS,ERR_R_MALLOC_FAILURE);
+ return NULL;
+ }
+
for (i = 0; i < sk_PKCS7_SIGNER_INFO_num(sinfos); i++)
{
si = sk_PKCS7_SIGNER_INFO_value(sinfos, i);
return 0;
}
- sk_X509_push(signers, signer);
+ if (!sk_X509_push(signers, signer)) {
+ sk_X509_free(signers);
+ return NULL;
+ }
}
return signers;
}
return NULL;
}
- PKCS7_set_type(p7, NID_pkcs7_enveloped);
- if(!PKCS7_set_cipher(p7, cipher)) {
+ if (!PKCS7_set_type(p7, NID_pkcs7_enveloped))
+ goto err;
+ if (!PKCS7_set_cipher(p7, cipher)) {
PKCS7err(PKCS7_F_PKCS7_ENCRYPT,PKCS7_R_ERROR_SETTING_CIPHER);
goto err;
}
}
}
- if(!(p7bio = PKCS7_dataInit(p7, NULL))) {
- PKCS7err(PKCS7_F_PKCS7_ENCRYPT,ERR_R_MALLOC_FAILURE);
- goto err;
- }
-
- SMIME_crlf_copy(in, p7bio, flags);
+ if (flags & PKCS7_STREAM)
+ return p7;
- BIO_flush(p7bio);
-
- if (!PKCS7_dataFinal(p7,p7bio)) {
- PKCS7err(PKCS7_F_PKCS7_ENCRYPT,PKCS7_R_PKCS7_DATAFINAL_ERROR);
- goto err;
- }
- BIO_free_all(p7bio);
-
- return p7;
+ if (PKCS7_final(p7, in, flags))
+ return p7;
err:
- BIO_free(p7bio);
+ BIO_free_all(p7bio);
PKCS7_free(p7);
return NULL;
return 0;
}
- if(!X509_check_private_key(cert, pkey)) {
+ if(cert && !X509_check_private_key(cert, pkey)) {
PKCS7err(PKCS7_F_PKCS7_DECRYPT,
PKCS7_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE);
return 0;
/* Encrypt BIOs can't do BIO_gets() so add a buffer BIO */
if(!(tmpbuf = BIO_new(BIO_f_buffer()))) {
PKCS7err(PKCS7_F_PKCS7_DECRYPT, ERR_R_MALLOC_FAILURE);
+ BIO_free_all(tmpmem);
return 0;
}
if(!(bread = BIO_push(tmpbuf, tmpmem))) {
PKCS7err(PKCS7_F_PKCS7_DECRYPT, ERR_R_MALLOC_FAILURE);
+ BIO_free_all(tmpbuf);
+ BIO_free_all(tmpmem);
return 0;
}
ret = SMIME_text(bread, data);
projects / openssl.git / blobdiff