Remove AES-GCM support.

diff --git a/src/cipher.h b/src/cipher.h
index bbba569..47cd1cd 100644 (file)
--- a/src/cipher.h
+++ b/src/cipher.h
@@ -34,16 +34,8 @@ 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) __attribute__ ((__warn_unused_result__));
 extern bool cipher_set_key_from_rsa(cipher_t *, void *, size_t, bool) __attribute__ ((__warn_unused_result__));
-extern bool cipher_set_counter(cipher_t *, const void *, size_t) __attribute__ ((__warn_unused_result__));
-extern bool cipher_set_counter_key(cipher_t *, void *) __attribute__ ((__warn_unused_result__));
 extern bool cipher_encrypt(cipher_t *, const void *indata, size_t inlen, void *outdata, size_t *outlen, bool oneshot) __attribute__ ((__warn_unused_result__));
 extern bool cipher_decrypt(cipher_t *, const void *indata, size_t inlen, void *outdata, size_t *outlen, bool oneshot) __attribute__ ((__warn_unused_result__));
-extern bool cipher_gcm_encrypt(cipher_t *, const void *indata, size_t inlen, void *outdata, size_t *outlen) __attribute__ ((__warn_unused_result__));
-extern bool cipher_gcm_encrypt_start(cipher_t *, const void *indata, size_t inlen, void *outdata, size_t *outlen) __attribute__ ((__warn_unused_result__));
-extern bool cipher_gcm_encrypt_finish(cipher_t *, const void *indata, size_t inlen, void *outdata, size_t *outlen) __attribute__ ((__warn_unused_result__));
-extern bool cipher_gcm_decrypt(cipher_t *, const void *indata, size_t inlen, void *outdata, size_t *outlen) __attribute__ ((__warn_unused_result__));
-extern bool cipher_gcm_decrypt_start(cipher_t *, const void *indata, size_t inlen, void *outdata, size_t *outlen) __attribute__ ((__warn_unused_result__));
-extern bool cipher_gcm_decrypt_finish(cipher_t *, const void *indata, size_t inlen, void *outdata, size_t *outlen) __attribute__ ((__warn_unused_result__));
 extern int cipher_get_nid(const cipher_t *);
 extern bool cipher_active(const cipher_t *);
 

diff --git a/src/openssl/cipher.c b/src/openssl/cipher.c
index 5172d82..9b39a28 100644 (file)
--- a/src/openssl/cipher.c
+++ b/src/openssl/cipher.c
@@ -30,15 +30,8 @@
 struct cipher {
        EVP_CIPHER_CTX ctx;
        const EVP_CIPHER *cipher;
-       struct cipher_counter *counter;
 };
 
-typedef struct cipher_counter {
-       unsigned char counter[CIPHER_MAX_IV_SIZE];
-       unsigned char block[CIPHER_MAX_IV_SIZE];
-       int n;
-} cipher_counter_t;
-
 static cipher_t *cipher_open(const EVP_CIPHER *evp_cipher) {
        cipher_t *cipher = xzalloc(sizeof *cipher);
        cipher->cipher = evp_cipher;
@@ -76,7 +69,6 @@ void cipher_close(cipher_t *cipher) {
                return;
 
        EVP_CIPHER_CTX_cleanup(&cipher->ctx);
-       free(cipher->counter);
        free(cipher);
 }
 
@@ -117,124 +109,6 @@ bool cipher_set_key_from_rsa(cipher_t *cipher, void *key, size_t len, bool encry
        return false;
 }
 
-bool cipher_set_counter(cipher_t *cipher, const void *counter, size_t len) {
-       if(len > cipher->cipher->iv_len - 4) {
-               logger(DEBUG_ALWAYS, LOG_ERR, "Counter too long");
-               return false;
-       }
-
-       memcpy(cipher->counter->counter, counter, len);
-       cipher->counter->n = 0;
-
-       return true;
-}
-
-bool cipher_set_counter_key(cipher_t *cipher, void *key) {
-       int result = EVP_EncryptInit_ex(&cipher->ctx, cipher->cipher, NULL, (unsigned char *)key, NULL);
-       if(!result) {
-               logger(DEBUG_ALWAYS, LOG_ERR, "Error while setting key: %s", ERR_error_string(ERR_get_error(), NULL));
-               return false;
-       }
-
-       if(!cipher->counter)
-               cipher->counter = xzalloc(sizeof *cipher->counter);
-       else
-               cipher->counter->n = 0;
-
-       memcpy(cipher->counter->counter, (unsigned char *)key + cipher->cipher->key_len, cipher->cipher->iv_len);
-
-       return true;
-}
-
-bool cipher_gcm_encrypt_start(cipher_t *cipher, const void *indata, size_t inlen, void *outdata, size_t *outlen) {
-       int len = 0;
-       if(!EVP_EncryptInit_ex(&cipher->ctx, NULL, NULL, NULL, cipher->counter->counter)
-                       || (inlen && !EVP_EncryptUpdate(&cipher->ctx, (unsigned char *)outdata, &len, (unsigned char *)indata, inlen))) {
-               logger(DEBUG_ALWAYS, LOG_ERR, "Error while encrypting: %s", ERR_error_string(ERR_get_error(), NULL));
-               return false;
-       }
-       if(outlen)
-               *outlen = len;
-       return true;
-}
-
-bool cipher_gcm_encrypt_finish(cipher_t *cipher, const void *indata, size_t inlen, void *outdata, size_t *outlen) {
-       int len = 0, pad = 0;
-       if((inlen && !EVP_EncryptUpdate(&cipher->ctx, (unsigned char *)outdata, &len, (unsigned char *)indata, inlen))
-                       || !EVP_EncryptFinal(&cipher->ctx, (unsigned char *)outdata + len, &pad)) {
-               logger(DEBUG_ALWAYS, LOG_ERR, "Error while encrypting: %s", ERR_error_string(ERR_get_error(), NULL));
-               return false;
-       }
-       EVP_CIPHER_CTX_ctrl(&cipher->ctx, EVP_CTRL_GCM_GET_TAG, 16, (unsigned char *)outdata + len + pad);
-       if(outlen)
-               *outlen = len + pad + 16;
-       return true;
-}
-
-bool cipher_gcm_encrypt(cipher_t *cipher, const void *indata, size_t inlen, void *outdata, size_t *outlen) {
-       int len = 0, pad = 0;
-       if(!EVP_EncryptInit_ex(&cipher->ctx, NULL, NULL, NULL, cipher->counter->counter) ||
-                       !EVP_EncryptUpdate(&cipher->ctx, (unsigned char *)outdata, &len, (unsigned char *)indata, inlen) ||
-                       !EVP_EncryptFinal(&cipher->ctx, (unsigned char *)outdata + len, &pad)) {
-               logger(DEBUG_ALWAYS, LOG_ERR, "Error while encrypting: %s", ERR_error_string(ERR_get_error(), NULL));
-               return false;
-       }
-       EVP_CIPHER_CTX_ctrl(&cipher->ctx, EVP_CTRL_GCM_GET_TAG, 16, (unsigned char *)outdata + len + pad);
-       if(outlen)
-               *outlen = len + pad + 16;
-       return true;
-}
-
-bool cipher_gcm_decrypt(cipher_t *cipher, const void *indata, size_t inlen, void *outdata, size_t *outlen) {
-       if(inlen < 16)
-               return false;
-
-       int len = 0, pad = 0;
-       if(!EVP_DecryptInit_ex(&cipher->ctx, NULL, NULL, NULL, cipher->counter->counter)) {
-               logger(DEBUG_ALWAYS, LOG_ERR, "Error while decrypting: %s", ERR_error_string(ERR_get_error(), NULL));
-               return false;
-       }
-
-       EVP_CIPHER_CTX_ctrl(&cipher->ctx, EVP_CTRL_GCM_SET_TAG, 16, (unsigned char *)indata + inlen - 16);
-
-       if(!EVP_DecryptUpdate(&cipher->ctx, (unsigned char *)outdata, &len, (unsigned char *)indata, inlen - 16) ||
-                       !EVP_DecryptFinal(&cipher->ctx, (unsigned char *)outdata + len, &pad)) {
-               logger(DEBUG_ALWAYS, LOG_ERR, "Error while decrypting: %s", ERR_error_string(ERR_get_error(), NULL));
-               return false;
-       }
-       if(outlen)
-               *outlen = len;
-       return true;
-}
-
-bool cipher_gcm_decrypt_start(cipher_t *cipher, const void *indata, size_t inlen, void *outdata, size_t *outlen) {
-       int len = 0;
-       if(!EVP_DecryptInit_ex(&cipher->ctx, NULL, NULL, NULL, cipher->counter->counter)
-                       || (inlen && !EVP_DecryptUpdate(&cipher->ctx, (unsigned char *)outdata, &len, (unsigned char *)indata, inlen))) {
-               logger(DEBUG_ALWAYS, LOG_ERR, "Error while decrypting: %s", ERR_error_string(ERR_get_error(), NULL));
-               return false;
-       }
-       if(outlen)
-               *outlen = len;
-       return true;
-}
-
-bool cipher_gcm_decrypt_finish(cipher_t *cipher, const void *indata, size_t inlen, void *outdata, size_t *outlen) {
-       if(inlen < 16)
-               return false;
-
-       EVP_CIPHER_CTX_ctrl(&cipher->ctx, EVP_CTRL_GCM_SET_TAG, 16, (unsigned char *)indata + inlen - 16);
-
-       int len = 0, pad = 0;
-       if((inlen > 16 && !EVP_DecryptUpdate(&cipher->ctx, (unsigned char *)outdata, &len, (unsigned char *)indata, inlen - 16))
-                       || !EVP_DecryptFinal(&cipher->ctx, (unsigned char *)outdata + len, &pad)) {
-               logger(DEBUG_ALWAYS, LOG_ERR, "Error while decrypting: %s", ERR_error_string(ERR_get_error(), NULL));
-               return false;
-       }
-       return true;
-}
-
-
 bool cipher_encrypt(cipher_t *cipher, const void *indata, size_t inlen, void *outdata, size_t *outlen, bool oneshot) {
        if(oneshot) {
                int len, pad;