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--- lessfs-1.7.0/lib_crypto.c.org 2011-09-30 20:13:08.000000000 +0200
+++ lessfs-1.7.0/lib_crypto.c 2018-09-26 13:16:08.995599693 +0200
@@ -78,7 +78,7 @@ unsigned char *safepassword()
DAT *lfsencrypt(unsigned char *unenc, unsigned long size)
{
unsigned char *safepasswd;
- EVP_CIPHER_CTX ctx;
+ EVP_CIPHER_CTX *ctx;
DAT *encoded;
int olen, tlen;
@@ -86,19 +86,24 @@ DAT *lfsencrypt(unsigned char *unenc, un
pthread_mutex_lock(&crypto_mutex);
safepasswd = safepassword();
- EVP_CIPHER_CTX_init(&ctx);
- EVP_EncryptInit(&ctx, EVP_bf_cbc(), safepasswd, config->iv);
+ ctx = EVP_CIPHER_CTX_new();
+ if (ctx == NULL) {
+ die_cryptoerr("can't allocate memory for new ctx");
+ }
+ EVP_EncryptInit(ctx, EVP_bf_cbc(), safepasswd, config->iv);
encoded = s_malloc(sizeof(DAT));
encoded->data = s_malloc(8 + size); //Blowfish can grow 64 bits
- if (EVP_EncryptUpdate(&ctx, encoded->data, &olen, unenc, size) != 1) {
+ if (EVP_EncryptUpdate(ctx, encoded->data, &olen, unenc, size) != 1) {
+ EVP_CIPHER_CTX_free(ctx);
die_cryptoerr("error in encrypt update\n");
}
- if (EVP_EncryptFinal(&ctx, encoded->data + olen, &tlen) != 1) {
+ if (EVP_EncryptFinal(ctx, encoded->data + olen, &tlen) != 1) {
+ EVP_CIPHER_CTX_free(ctx);
die_cryptoerr("error in encrypt final\n");
}
- EVP_CIPHER_CTX_cleanup(&ctx);
+ EVP_CIPHER_CTX_free(ctx);
encoded->size = olen + tlen;
if (encoded->size > 8 + size) {
die_cryptoerr
@@ -123,20 +128,24 @@ DAT *lfsdecrypt(DAT * data)
decrypted->data = s_malloc(data->size);
safepasswd = safepassword();
- EVP_CIPHER_CTX ctx;
- EVP_CIPHER_CTX_init(&ctx);
- EVP_DecryptInit(&ctx, EVP_bf_cbc(), safepasswd, config->iv);
+ EVP_CIPHER_CTX *ctx;
+ ctx = EVP_CIPHER_CTX_new();
+ if (ctx == NULL)
+ die_cryptoerr("can't allocate memory for new ctx");
+ EVP_DecryptInit(ctx, EVP_bf_cbc(), safepasswd, config->iv);
if (EVP_DecryptUpdate
- (&ctx, decrypted->data, &olen, data->data, data->size) != 1) {
+ (ctx, decrypted->data, &olen, data->data, data->size) != 1) {
+ EVP_CIPHER_CTX_free(ctx);
die_cryptoerr("Unexpected fatal error while decrypting.\n");
}
- if (EVP_DecryptFinal(&ctx, decrypted->data + olen, &tlen) != 1) {
+ if (EVP_DecryptFinal(ctx, decrypted->data + olen, &tlen) != 1) {
+ EVP_CIPHER_CTX_free(ctx);
die_cryptoerr("Unexpected fatal error in decrypt final.\n");
}
olen += tlen;
- EVP_CIPHER_CTX_cleanup(&ctx);
+ EVP_CIPHER_CTX_free(ctx);
decrypted->size = olen;
s_free(safepasswd);
pthread_mutex_unlock(&crypto_mutex);
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