Remove unnecessary variables and functions.

diff --git a/src/openssl/cipher.c b/src/openssl/cipher.c
index e5fe07d..86a1aca 100644 (file)
--- a/src/openssl/cipher.c
+++ b/src/openssl/cipher.c
@@ -27,11 +27,6 @@
 #include "xalloc.h"
 
 static bool cipher_open(cipher_t *cipher) {
-       cipher->keylen = cipher->cipher->key_len;
-       cipher->blklen = cipher->cipher->iv_len;
-
-       cipher->key = xmalloc(cipher->keylen + cipher->blklen);
-
        EVP_CIPHER_CTX_init(&cipher->ctx);
 
        return true;
@@ -43,7 +38,7 @@ bool cipher_open_by_name(cipher_t *cipher, const char *name) {
        if(cipher->cipher)
                return cipher_open(cipher);
 
-       logger(LOG_DEBUG, "Unknown cipher name '%s'!", name);
+       logger(LOG_ERR, "Unknown cipher name '%s'!", name);
        return false;
 }
 
@@ -53,7 +48,7 @@ bool cipher_open_by_nid(cipher_t *cipher, int nid) {
        if(cipher->cipher)
                return cipher_open(cipher);
 
-       logger(LOG_DEBUG, "Unknown cipher nid %d!", nid);
+       logger(LOG_ERR, "Unknown cipher nid %d!", nid);
        return false;
 }
 
@@ -64,29 +59,19 @@ bool cipher_open_blowfish_ofb(cipher_t *cipher) {
 
 void cipher_close(cipher_t *cipher) {
        EVP_CIPHER_CTX_cleanup(&cipher->ctx);
-
-       if(cipher->key) {
-               free(cipher->key);
-               cipher->key = NULL;
-       }
 }
 
 size_t cipher_keylength(const cipher_t *cipher) {
-       return cipher->keylen + cipher->blklen;
-}
-
-void cipher_get_key(const cipher_t *cipher, void *key) {
-       memcpy(key, cipher->key, cipher->keylen + cipher->blklen);
+       return cipher->cipher->key_len + cipher->cipher->iv_len;
 }
 
 bool cipher_set_key(cipher_t *cipher, void *key, bool encrypt) {
-       memcpy(cipher->key, key, cipher->keylen + cipher->blklen);
        bool result;
 
        if(encrypt)
-               result = EVP_EncryptInit_ex(&cipher->ctx, cipher->cipher, NULL, (unsigned char *)cipher->key, (unsigned char *)cipher->key + cipher->keylen);
+               result = EVP_EncryptInit_ex(&cipher->ctx, cipher->cipher, NULL, (unsigned char *)key, (unsigned char *)key + cipher->cipher->key_len);
        else
-               result = EVP_DecryptInit_ex(&cipher->ctx, cipher->cipher, NULL, (unsigned char *)cipher->key, (unsigned char *)cipher->key + cipher->keylen);
+               result = EVP_DecryptInit_ex(&cipher->ctx, cipher->cipher, NULL, (unsigned char *)key, (unsigned char *)key + cipher->cipher->key_len);
 
        if(result)
                return true;
@@ -96,14 +81,12 @@ bool cipher_set_key(cipher_t *cipher, void *key, bool encrypt) {
 }
 
 bool cipher_set_key_from_rsa(cipher_t *cipher, void *key, size_t len, bool encrypt) {
-       memcpy(cipher->key, key + len - (size_t)cipher->keylen, cipher->keylen);
-       memcpy(cipher->key + cipher->keylen, key + len - (size_t)cipher->keylen - (size_t)cipher->blklen, cipher->blklen);
        bool result;
 
        if(encrypt)
-               result = EVP_EncryptInit_ex(&cipher->ctx, cipher->cipher, NULL, (unsigned char *)cipher->key, (unsigned char *)cipher->key + cipher->keylen);
+               result = EVP_EncryptInit_ex(&cipher->ctx, cipher->cipher, NULL, (unsigned char *)key + len - cipher->cipher->key_len, (unsigned char *)key + len - cipher->cipher->iv_len - cipher->cipher->key_len);
        else
-               result = EVP_DecryptInit_ex(&cipher->ctx, cipher->cipher, NULL, (unsigned char *)cipher->key, (unsigned char *)cipher->key + cipher->keylen);
+               result = EVP_DecryptInit_ex(&cipher->ctx, cipher->cipher, NULL, (unsigned char *)key + len - cipher->cipher->key_len, (unsigned char *)key + len - cipher->cipher->iv_len - cipher->cipher->key_len);
 
        if(result)
                return true;
@@ -112,34 +95,17 @@ bool cipher_set_key_from_rsa(cipher_t *cipher, void *key, size_t len, bool encry
        return false;
 }
 
-bool cipher_regenerate_key(cipher_t *cipher, bool encrypt) {
-       bool result;
-
-       RAND_pseudo_bytes((unsigned char *)cipher->key, cipher->keylen + cipher->blklen);
-
-       if(encrypt)
-               result = EVP_EncryptInit_ex(&cipher->ctx, cipher->cipher, NULL, (unsigned char *)cipher->key, (unsigned char *)cipher->key + cipher->keylen);
-       else
-               result = EVP_DecryptInit_ex(&cipher->ctx, cipher->cipher, NULL, (unsigned char *)cipher->key, (unsigned char *)cipher->key + cipher->keylen);
-
-       if(result)
-               return true;
-       
-       logger(LOG_ERR, "Error while regenerating key: %s", ERR_error_string(ERR_get_error(), NULL));
-       return false;
-}
-
 bool cipher_encrypt(cipher_t *cipher, const void *indata, size_t inlen, void *outdata, size_t *outlen, bool oneshot) {
        if(oneshot) {
-               int len = *outlen, pad;
+               int len, pad;
                if(EVP_EncryptInit_ex(&cipher->ctx, NULL, NULL, NULL, NULL)
-                               &&EVP_EncryptUpdate(&cipher->ctx, outdata, &len, indata, inlen)
-                               && EVP_EncryptFinal(&cipher->ctx, outdata + len, &pad)) {
+                               && EVP_EncryptUpdate(&cipher->ctx, (unsigned char *)outdata, &len, indata, inlen)
+                               && EVP_EncryptFinal(&cipher->ctx, (unsigned char *)outdata + len, &pad)) {
                        *outlen = len + pad;
                        return true;
                }
        } else {
-               int len = *outlen;
+               int len;
                if(EVP_EncryptUpdate(&cipher->ctx, outdata, &len, indata, inlen)) {
                        *outlen = len;
                        return true;
@@ -152,22 +118,22 @@ bool cipher_encrypt(cipher_t *cipher, const void *indata, size_t inlen, void *ou
 
 bool cipher_decrypt(cipher_t *cipher, const void *indata, size_t inlen, void *outdata, size_t *outlen, bool oneshot) {
        if(oneshot) {
-               int len = *outlen, pad;
+               int len, pad;
                if(EVP_DecryptInit_ex(&cipher->ctx, NULL, NULL, NULL, NULL)
-                               && EVP_DecryptUpdate(&cipher->ctx, outdata, &len, indata, inlen)
-                               && EVP_DecryptFinal(&cipher->ctx, outdata + len, &pad)) {
+                               && EVP_DecryptUpdate(&cipher->ctx, (unsigned char *)outdata, &len, indata, inlen)
+                               && EVP_DecryptFinal(&cipher->ctx, (unsigned char *)outdata + len, &pad)) {
                        *outlen = len + pad;
                        return true;
                }
        } else {
-               int len = *outlen;
+               int len;
                if(EVP_EncryptUpdate(&cipher->ctx, outdata, &len, indata, inlen)) {
                        *outlen = len;
                        return true;
                }
        }
 
-       logger(LOG_ERR, "Error while encrypting: %s", ERR_error_string(ERR_get_error(), NULL));
+       logger(LOG_ERR, "Error while decrypting: %s", ERR_error_string(ERR_get_error(), NULL));
        return false;
 }
 

diff --git a/src/openssl/cipher.h b/src/openssl/cipher.h
index 482f1a6..380384a 100644 (file)
--- a/src/openssl/cipher.h
+++ b/src/openssl/cipher.h
@@ -29,9 +29,6 @@
 typedef struct cipher {
        EVP_CIPHER_CTX ctx;
        const EVP_CIPHER *cipher;
-       char *key;
-       uint16_t keylen;
-       uint16_t blklen;
 } cipher_t;
 
 extern bool cipher_open_by_name(cipher_t *, const char *);
@@ -39,10 +36,8 @@ extern bool cipher_open_by_nid(cipher_t *, int);
 extern bool cipher_open_blowfish_ofb(cipher_t *);
 extern void cipher_close(cipher_t *);
 extern size_t cipher_keylength(const cipher_t *);
-extern void cipher_get_key(const cipher_t *, void *);
 extern bool cipher_set_key(cipher_t *, void *, bool);
 extern bool cipher_set_key_from_rsa(cipher_t *, void *, size_t, bool);
-extern bool cipher_regenerate_key(cipher_t *, bool);
 extern bool cipher_encrypt(cipher_t *, const void *indata, size_t inlen, void *outdata, size_t *outlen, bool);
 extern bool cipher_decrypt(cipher_t *, const void *indata, size_t inlen, void *outdata, size_t *outlen, bool);
 extern int cipher_get_nid(const cipher_t *);