des_generic.c (e5451c8f8330e03ad3cfa16048b4daf961af434f) des_generic.c (231baecdef7a906579925ccf1bd45aa734f32320)
1/*
2 * Cryptographic API.
3 *
4 * DES & Triple DES EDE Cipher Algorithms.
5 *
6 * Copyright (c) 2005 Dag Arne Osvik <da@osvik.no>
7 *
8 * This program is free software; you can redistribute it and/or modify

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784 struct des_ctx *dctx = crypto_tfm_ctx(tfm);
785 u32 *flags = &tfm->crt_flags;
786 u32 tmp[DES_EXPKEY_WORDS];
787 int ret;
788
789 /* Expand to tmp */
790 ret = des_ekey(tmp, key);
791
1/*
2 * Cryptographic API.
3 *
4 * DES & Triple DES EDE Cipher Algorithms.
5 *
6 * Copyright (c) 2005 Dag Arne Osvik <da@osvik.no>
7 *
8 * This program is free software; you can redistribute it and/or modify

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784 struct des_ctx *dctx = crypto_tfm_ctx(tfm);
785 u32 *flags = &tfm->crt_flags;
786 u32 tmp[DES_EXPKEY_WORDS];
787 int ret;
788
789 /* Expand to tmp */
790 ret = des_ekey(tmp, key);
791
792 if (unlikely(ret == 0) && (*flags & CRYPTO_TFM_REQ_WEAK_KEY)) {
792 if (unlikely(ret == 0) && (*flags & CRYPTO_TFM_REQ_FORBID_WEAK_KEYS)) {
793 *flags |= CRYPTO_TFM_RES_WEAK_KEY;
794 return -EINVAL;
795 }
796
797 /* Copy to output */
798 memcpy(dctx->expkey, tmp, sizeof(dctx->expkey));
799
800 return 0;

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861 */
862int __des3_ede_setkey(u32 *expkey, u32 *flags, const u8 *key,
863 unsigned int keylen)
864{
865 const u32 *K = (const u32 *)key;
866
867 if (unlikely(!((K[0] ^ K[2]) | (K[1] ^ K[3])) ||
868 !((K[2] ^ K[4]) | (K[3] ^ K[5]))) &&
793 *flags |= CRYPTO_TFM_RES_WEAK_KEY;
794 return -EINVAL;
795 }
796
797 /* Copy to output */
798 memcpy(dctx->expkey, tmp, sizeof(dctx->expkey));
799
800 return 0;

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861 */
862int __des3_ede_setkey(u32 *expkey, u32 *flags, const u8 *key,
863 unsigned int keylen)
864{
865 const u32 *K = (const u32 *)key;
866
867 if (unlikely(!((K[0] ^ K[2]) | (K[1] ^ K[3])) ||
868 !((K[2] ^ K[4]) | (K[3] ^ K[5]))) &&
869 (*flags & CRYPTO_TFM_REQ_WEAK_KEY)) {
869 (*flags & CRYPTO_TFM_REQ_FORBID_WEAK_KEYS)) {
870 *flags |= CRYPTO_TFM_RES_WEAK_KEY;
871 return -EINVAL;
872 }
873
874 des_ekey(expkey, key); expkey += DES_EXPKEY_WORDS; key += DES_KEY_SIZE;
875 dkey(expkey, key); expkey += DES_EXPKEY_WORDS; key += DES_KEY_SIZE;
876 des_ekey(expkey, key);
877

--- 128 unchanged lines hidden --- 		870 *flags |= CRYPTO_TFM_RES_WEAK_KEY;
871 return -EINVAL;
872 }
873
874 des_ekey(expkey, key); expkey += DES_EXPKEY_WORDS; key += DES_KEY_SIZE;
875 dkey(expkey, key); expkey += DES_EXPKEY_WORDS; key += DES_KEY_SIZE;
876 des_ekey(expkey, key);
877

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