X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=crypto%2Fcipher.c;h=dfd4bcfc59758332d8ae82fc1d0db2e009c9b26a;hb=a57ebc90f1350296edded12d33d7c278831bc3bf;hp=8da644364cb4225824575ec4813741b9d46d7041;hpb=d6ac1a7910d22626bc77e73db091e00b810715f4;p=linux-2.6

diff --git a/crypto/cipher.c b/crypto/cipher.c
index 8da644364c..dfd4bcfc59 100644
--- a/crypto/cipher.c
+++ b/crypto/cipher.c
@@ -191,6 +191,8 @@ static unsigned int cbc_process_encrypt(const struct cipher_desc *desc,
 	u8 *iv = desc->info;
 	unsigned int done = 0;
 
+	nbytes -= bsize;
+
 	do {
 		xor(iv, src);
 		fn(crypto_tfm_ctx(tfm), dst, iv);
@@ -198,7 +200,7 @@ static unsigned int cbc_process_encrypt(const struct cipher_desc *desc,
 
 		src += bsize;
 		dst += bsize;
-	} while ((done += bsize) < nbytes);
+	} while ((done += bsize) <= nbytes);
 
 	return done;
 }
@@ -219,6 +221,8 @@ static unsigned int cbc_process_decrypt(const struct cipher_desc *desc,
 	u8 *iv = desc->info;
 	unsigned int done = 0;
 
+	nbytes -= bsize;
+
 	do {
 		u8 *tmp_dst = *dst_p;
 
@@ -230,7 +234,7 @@ static unsigned int cbc_process_decrypt(const struct cipher_desc *desc,
 
 		src += bsize;
 		dst += bsize;
-	} while ((done += bsize) < nbytes);
+	} while ((done += bsize) <= nbytes);
 
 	return done;
 }
@@ -243,12 +247,14 @@ static unsigned int ecb_process(const struct cipher_desc *desc, u8 *dst,
 	void (*fn)(void *, u8 *, const u8 *) = desc->crfn;
 	unsigned int done = 0;
 
+	nbytes -= bsize;
+
 	do {
 		fn(crypto_tfm_ctx(tfm), dst, src);
 
 		src += bsize;
 		dst += bsize;
-	} while ((done += bsize) < nbytes);
+	} while ((done += bsize) <= nbytes);
 
 	return done;
 }
@@ -377,11 +383,7 @@ static int nocrypt_iv(struct crypto_tfm *tfm,
 int crypto_init_cipher_flags(struct crypto_tfm *tfm, u32 flags)
 {
 	u32 mode = flags & CRYPTO_TFM_MODE_MASK;
-	
 	tfm->crt_cipher.cit_mode = mode ? mode : CRYPTO_TFM_MODE_ECB;
-	if (flags & CRYPTO_TFM_REQ_WEAK_KEY)
-		tfm->crt_flags = CRYPTO_TFM_REQ_WEAK_KEY;
-	
 	return 0;
 }