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Backport to OpenSSL version 0.9.5

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svn:r91
This commit is contained in:
Nick Mathewson 2002-09-03 19:16:02 +00:00
parent 41ee4e24bb
commit 4c761e4537
1 changed files with 27 additions and 8 deletions
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35
src/common/crypto.c
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@ -9,6 +9,7 @@
#include <openssl/pem.h> #include <openssl/pem.h>
#include <openssl/evp.h> #include <openssl/evp.h>
#include <openssl/rand.h> #include <openssl/rand.h>
#include <openssl/opensslv.h>
#include <stdlib.h> #include <stdlib.h>
#include <assert.h> #include <assert.h>
@ -17,6 +18,24 @@
#include "config.h" #include "config.h"
#include "log.h" #include "log.h"
#if OPENSSL_VERSION_NUMBER < 0x00905000l
#error "We require openssl >= 0.9.5"
#elif OPENSSL_VERSION_NUMBER < 0x00906000l
#define OPENSSL_095
#endif
/*
* Certain functions that return a success code in OpenSSL 0.9.6 return void
* (and don't indicate errors) in OpenSSL version 0.9.5.
*
* [OpenSSL 0.9.5 matters, because it ships with Redhat 6.2.]
*/
#ifdef OPENSSL_095
#define RETURN_SSL_OUTCOME(exp) (exp); return 0
#else
#define RETURN_SSL_OUTCOME(exp) return !(exp)
#endif
int crypto_global_init() int crypto_global_init()
{ {
ERR_load_crypto_strings(); ERR_load_crypto_strings();
@ -478,11 +497,11 @@ int crypto_cipher_encrypt_init_cipher(crypto_cipher_env_t *env)
switch(env->type) { switch(env->type) {
case CRYPTO_CIPHER_IDENTITY: case CRYPTO_CIPHER_IDENTITY:
return !(EVP_EncryptInit((EVP_CIPHER_CTX *)env->aux, EVP_enc_null(), env->key, env->iv)); RETURN_SSL_OUTCOME(EVP_EncryptInit((EVP_CIPHER_CTX *)env->aux, EVP_enc_null(), env->key, env->iv));
case CRYPTO_CIPHER_DES: case CRYPTO_CIPHER_DES:
return !(EVP_EncryptInit((EVP_CIPHER_CTX *)env->aux, EVP_des_ofb(), env->key, env->iv)); RETURN_SSL_OUTCOME(EVP_EncryptInit((EVP_CIPHER_CTX *)env->aux, EVP_des_ofb(), env->key, env->iv));
case CRYPTO_CIPHER_RC4: case CRYPTO_CIPHER_RC4:
return !(EVP_EncryptInit((EVP_CIPHER_CTX *)env->aux, EVP_rc4(), env->key, env->iv)); RETURN_SSL_OUTCOME(EVP_EncryptInit((EVP_CIPHER_CTX *)env->aux, EVP_rc4(), env->key, env->iv));
default: default:
return -1; return -1;
} }
@ -496,11 +515,11 @@ int crypto_cipher_decrypt_init_cipher(crypto_cipher_env_t *env)
switch(env->type) { switch(env->type) {
case CRYPTO_CIPHER_IDENTITY: case CRYPTO_CIPHER_IDENTITY:
return !(EVP_DecryptInit((EVP_CIPHER_CTX *)env->aux, EVP_enc_null(), env->key, env->iv)); RETURN_SSL_OUTCOME(EVP_DecryptInit((EVP_CIPHER_CTX *)env->aux, EVP_enc_null(), env->key, env->iv));
case CRYPTO_CIPHER_DES: case CRYPTO_CIPHER_DES:
return !(EVP_DecryptInit((EVP_CIPHER_CTX *)env->aux, EVP_des_ofb(), env->key, env->iv)); RETURN_SSL_OUTCOME(EVP_DecryptInit((EVP_CIPHER_CTX *)env->aux, EVP_des_ofb(), env->key, env->iv));
case CRYPTO_CIPHER_RC4: case CRYPTO_CIPHER_RC4:
return !(EVP_DecryptInit((EVP_CIPHER_CTX *)env->aux, EVP_rc4(), env->key, env->iv)); RETURN_SSL_OUTCOME(EVP_DecryptInit((EVP_CIPHER_CTX *)env->aux, EVP_rc4(), env->key, env->iv));
default: default:
return -1; return -1;
} }
@ -514,7 +533,7 @@ int crypto_cipher_encrypt(crypto_cipher_env_t *env, unsigned char *from, unsigne
assert(env && from && to); assert(env && from && to);
return !(EVP_EncryptUpdate((EVP_CIPHER_CTX *)env->aux, to, &tolen, from, fromlen)); RETURN_SSL_OUTCOME(EVP_EncryptUpdate((EVP_CIPHER_CTX *)env->aux, to, &tolen, from, fromlen));
} }
int crypto_cipher_decrypt(crypto_cipher_env_t *env, unsigned char *from, unsigned int fromlen, unsigned char *to) int crypto_cipher_decrypt(crypto_cipher_env_t *env, unsigned char *from, unsigned int fromlen, unsigned char *to)
@ -523,7 +542,7 @@ int crypto_cipher_decrypt(crypto_cipher_env_t *env, unsigned char *from, unsigne
assert(env && from && to); assert(env && from && to);
return !(EVP_DecryptUpdate((EVP_CIPHER_CTX *)env->aux, to, &tolen, from, fromlen)); RETURN_SSL_OUTCOME(EVP_DecryptUpdate((EVP_CIPHER_CTX *)env->aux, to, &tolen, from, fromlen));
} }
/* SHA-1 */ /* SHA-1 */